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1780
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jones
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/**
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* '$RCSfile$'
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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*
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat.client;
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import java.io.InputStream;
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28 |
1783
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jones
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import java.io.InputStreamReader;
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29 |
1784
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jones
|
import java.io.PushbackReader;
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30 |
2981
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jones
|
import java.io.StringReader;
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31 |
1784
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jones
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import java.io.IOException;
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32 |
1783
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jones
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import java.io.StringWriter;
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33 |
1780
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jones
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import java.io.Reader;
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34 |
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import java.net.URL;
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35 |
3481
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barteau
|
import java.util.HashMap;
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36 |
1780
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jones
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import java.util.Properties;
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37 |
3141
|
berkley
|
import java.util.Vector;
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38 |
3300
|
barteau
|
import javax.servlet.http.HttpServletRequest;
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39 |
3285
|
barteau
|
import javax.xml.xpath.XPath;
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40 |
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import javax.xml.xpath.XPathFactory;
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import org.w3c.dom.Document;
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1780
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jones
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2981
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jones
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import org.w3c.dom.Node;
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44 |
3141
|
berkley
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import org.w3c.dom.NodeList;
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2981
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jones
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46 |
1780
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jones
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import edu.ucsb.nceas.utilities.HttpMessage;
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1788
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jones
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import edu.ucsb.nceas.utilities.IOUtil;
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2981
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jones
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import edu.ucsb.nceas.utilities.XMLUtilities;
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2240
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sgarg
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import java.io.File;
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1780
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jones
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/**
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52 |
2240
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sgarg
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* This interface provides methods for initializing and logging in to a
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* Metacat server, and then querying, reading, transforming, inserting,
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54 |
1780
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jones
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* updating and deleting documents from that server.
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*/
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56 |
3285
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barteau
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public class MetacatClient implements Metacat {
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1780
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jones
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/** The URL string for the metacat server */
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58 |
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private String metacatUrl;
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3285
|
barteau
|
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1822
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jones
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/** The session identifier for the session */
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61 |
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private String sessionId;
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3285
|
barteau
|
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63 |
3300
|
barteau
|
/**
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1780
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jones
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* Constructor to create a new instance. Protected because instances
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* should only be created by the factory MetacatFactory.
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*/
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3285
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barteau
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protected MetacatClient() {
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1822
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jones
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this.metacatUrl = null;
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this.sessionId = null;
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1780
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jones
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}
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3285
|
barteau
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1780
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jones
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/**
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* Method used to log in to a metacat server. Implementations will need
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* to cache a cookie value to make the session persistent. Each time a
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* call is made to one of the other methods (e.g., read), the cookie will
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* need to be passed back to the metacat server along with the request.
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*
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* @param username the username of the user, like an LDAP DN
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* @param password the password for that user for authentication
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1822
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jones
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* @return the response string from metacat in XML format
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1780
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jones
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* @throws MetacatAuthException when the username/password could
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* not be authenticated
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*/
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2240
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sgarg
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public String login(String username, String password)
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3285
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barteau
|
throws MetacatAuthException, MetacatInaccessibleException {
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1783
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jones
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Properties prop = new Properties();
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prop.put("action", "login");
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prop.put("qformat", "xml");
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prop.put("username", username);
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prop.put("password", password);
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3285
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barteau
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1783
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jones
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String response = null;
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try {
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2264
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sgarg
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response = sendDataForString(prop, null, null, 0);
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1783
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jones
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} catch (Exception e) {
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throw new MetacatInaccessibleException(e.getMessage());
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}
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3285
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barteau
|
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99 |
1783
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jones
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if (response.indexOf("<login>") == -1) {
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1828
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jones
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setSessionId("");
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1783
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jones
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throw new MetacatAuthException(response);
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102 |
1822
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jones
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} else {
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103 |
1825
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jones
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int start = response.indexOf("<sessionId>") + 11;
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1822
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jones
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int end = response.indexOf("</sessionId>");
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if ((start != -1) && (end != -1)) {
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1828
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jones
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setSessionId(response.substring(start,end));
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107 |
1822
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jones
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}
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108 |
1783
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jones
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}
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109 |
1822
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jones
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return response;
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110 |
1780
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jones
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}
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111 |
2683
|
sgarg
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112 |
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/**
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113 |
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* Method used to log in to a metacat server. Implementations will need
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114 |
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* to cache a cookie value to make the session persistent. Each time a
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115 |
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* call is made to one of the other methods (e.g., read), the cookie will
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116 |
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* need to be passed back to the metacat server along with the request.
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117 |
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*
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118 |
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* @param username the username of the user, like an LDAP DN
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119 |
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* @param password the password for that user for authentication
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120 |
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* @return the response string from metacat in XML format
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121 |
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* @throws MetacatAuthException when the username/password could
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* not be authenticated
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*/
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124 |
3285
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barteau
|
public String getloggedinuserinfo() throws MetacatInaccessibleException {
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125 |
2683
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sgarg
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Properties prop = new Properties();
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prop.put("action", "getloggedinuserinfo");
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prop.put("qformat", "xml");
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128 |
3285
|
barteau
|
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129 |
2683
|
sgarg
|
String response = null;
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130 |
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try {
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131 |
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response = sendDataForString(prop, null, null, 0);
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132 |
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} catch (Exception e) {
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133 |
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throw new MetacatInaccessibleException(e.getMessage());
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134 |
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}
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135 |
3285
|
barteau
|
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136 |
2683
|
sgarg
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return response;
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137 |
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}
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138 |
3285
|
barteau
|
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139 |
1780
|
jones
|
/**
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140 |
1822
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jones
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* Method used to log out a metacat server. The Metacat server will end
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141 |
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* the session when this call is invoked.
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142 |
1798
|
tao
|
*
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143 |
1822
|
jones
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* @return the response string from metacat in XML format
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144 |
1798
|
tao
|
* @throws MetacatInaccessibleException when the metacat server can not be
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145 |
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* reached or does not respond
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146 |
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*/
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147 |
3285
|
barteau
|
public String logout() throws MetacatInaccessibleException, MetacatException {
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148 |
1798
|
tao
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Properties prop = new Properties();
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149 |
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prop.put("action", "logout");
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150 |
2240
|
sgarg
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prop.put("qformat", "xml");
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151 |
3285
|
barteau
|
|
152 |
1798
|
tao
|
String response = null;
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153 |
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try {
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154 |
2264
|
sgarg
|
response = sendDataForString(prop, null, null, 0);
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155 |
1798
|
tao
|
} catch (Exception e) {
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156 |
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throw new MetacatInaccessibleException(e.getMessage());
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157 |
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}
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158 |
3285
|
barteau
|
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159 |
1798
|
tao
|
if (response.indexOf("<logout>") == -1) {
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160 |
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throw new MetacatException(response);
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161 |
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}
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162 |
1828
|
jones
|
setSessionId("");
|
163 |
1822
|
jones
|
return response;
|
164 |
1798
|
tao
|
}
|
165 |
3285
|
barteau
|
|
166 |
1798
|
tao
|
/**
|
167 |
1780
|
jones
|
* Read an XML document from the metacat server session, accessed by docid,
|
168 |
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* and returned as a Reader.
|
169 |
|
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*
|
170 |
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* @param docid the identifier of the document to be read
|
171 |
|
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* @return a Reader for accessing the document
|
172 |
2240
|
sgarg
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
173 |
1780
|
jones
|
* for the operation
|
174 |
1784
|
jones
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
175 |
|
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* reached or does not respond
|
176 |
|
|
* @throws MetacatException when the metacat server generates another error
|
177 |
1780
|
jones
|
*/
|
178 |
1784
|
jones
|
public Reader read(String docid) throws InsufficientKarmaException,
|
179 |
3285
|
barteau
|
MetacatInaccessibleException, MetacatException, DocumentNotFoundException {
|
180 |
1784
|
jones
|
PushbackReader pbr = null;
|
181 |
3285
|
barteau
|
|
182 |
1784
|
jones
|
Properties prop = new Properties();
|
183 |
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prop.put("action", "read");
|
184 |
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prop.put("qformat", "xml");
|
185 |
|
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prop.put("docid", docid);
|
186 |
|
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InputStream response = null;
|
187 |
|
|
try {
|
188 |
2264
|
sgarg
|
response = sendData(prop, null, null, 0);
|
189 |
1784
|
jones
|
} catch (Exception e) {
|
190 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
191 |
|
|
}
|
192 |
|
|
pbr = new PushbackReader(new InputStreamReader(response), 512);
|
193 |
|
|
try {
|
194 |
|
|
char[] characters = new char[512];
|
195 |
|
|
int len = pbr.read(characters, 0, 512);
|
196 |
|
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StringWriter sw = new StringWriter();
|
197 |
|
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sw.write(characters, 0, len);
|
198 |
|
|
String message = sw.toString();
|
199 |
|
|
sw.close();
|
200 |
|
|
pbr.unread(characters, 0, len);
|
201 |
|
|
if (message.indexOf("<error>") != -1) {
|
202 |
|
|
if (message.indexOf("does not have permission") != -1) {
|
203 |
|
|
throw new InsufficientKarmaException(message);
|
204 |
2989
|
berkley
|
} else if(message.indexOf("does not exist") != -1) {
|
205 |
|
|
throw new DocumentNotFoundException(message);
|
206 |
1784
|
jones
|
} else {
|
207 |
|
|
throw new MetacatException(message);
|
208 |
|
|
}
|
209 |
|
|
}
|
210 |
|
|
} catch (IOException ioe) {
|
211 |
|
|
throw new MetacatException(
|
212 |
2240
|
sgarg
|
"MetacatClient: Error converting Reader to String."
|
213 |
1784
|
jones
|
+ ioe.getMessage());
|
214 |
|
|
}
|
215 |
|
|
return pbr;
|
216 |
1780
|
jones
|
}
|
217 |
3285
|
barteau
|
|
218 |
|
|
|
219 |
1780
|
jones
|
/**
|
220 |
3285
|
barteau
|
* Read inline data from the metacat server session, accessed by
|
221 |
|
|
* inlinedataid and returned as a Reader.
|
222 |
|
|
*
|
223 |
|
|
* @param inlinedataid the identifier of the data to be read
|
224 |
|
|
* @return a Reader for accessing the document
|
225 |
|
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
226 |
|
|
* for the operation
|
227 |
|
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
228 |
|
|
* reached or does not respond
|
229 |
|
|
* @throws MetacatException when the metacat server generates another error
|
230 |
|
|
*/
|
231 |
|
|
public Reader readInlineData(String inlinedataid)
|
232 |
|
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throws InsufficientKarmaException,
|
233 |
|
|
MetacatInaccessibleException, MetacatException {
|
234 |
|
|
PushbackReader pbr = null;
|
235 |
|
|
|
236 |
|
|
Properties prop = new Properties();
|
237 |
|
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prop.put("action", "readinlinedata");
|
238 |
|
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prop.put("inlinedataid", inlinedataid);
|
239 |
|
|
|
240 |
|
|
InputStream response = null;
|
241 |
|
|
try {
|
242 |
|
|
response = sendData(prop, null, null, 0);
|
243 |
|
|
} catch (Exception e) {
|
244 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
245 |
|
|
}
|
246 |
|
|
|
247 |
|
|
pbr = new PushbackReader(new InputStreamReader(response), 512);
|
248 |
|
|
try {
|
249 |
|
|
char[] characters = new char[512];
|
250 |
|
|
int len = pbr.read(characters, 0, 512);
|
251 |
|
|
StringWriter sw = new StringWriter();
|
252 |
|
|
sw.write(characters, 0, len);
|
253 |
|
|
String message = sw.toString();
|
254 |
|
|
sw.close();
|
255 |
|
|
pbr.unread(characters, 0, len);
|
256 |
|
|
|
257 |
|
|
if (message.indexOf("<error>") != -1) {
|
258 |
|
|
if (message.indexOf("does not have permission") != -1) {
|
259 |
|
|
throw new InsufficientKarmaException(message);
|
260 |
|
|
} else {
|
261 |
|
|
throw new MetacatException(message);
|
262 |
|
|
}
|
263 |
|
|
}
|
264 |
|
|
} catch (IOException ioe) {
|
265 |
|
|
throw new MetacatException(
|
266 |
|
|
"MetacatClient: Error converting Reader to String."
|
267 |
|
|
+ ioe.getMessage());
|
268 |
|
|
}
|
269 |
|
|
|
270 |
|
|
return pbr;
|
271 |
|
|
}
|
272 |
|
|
|
273 |
2261
|
sgarg
|
/**
|
274 |
2240
|
sgarg
|
* Query the metacat document store with the given metacat-compatible
|
275 |
3464
|
tao
|
* query document and default qformat xml, and return the result set as a Reader.
|
276 |
1780
|
jones
|
*
|
277 |
|
|
* @param xmlQuery a Reader for accessing the XML version of the query
|
278 |
|
|
* @return a Reader for accessing the result set
|
279 |
|
|
*/
|
280 |
1786
|
tao
|
public Reader query(Reader xmlQuery) throws MetacatInaccessibleException,
|
281 |
3285
|
barteau
|
IOException {
|
282 |
3464
|
tao
|
String qformat = "xml";
|
283 |
|
|
return query(xmlQuery, qformat);
|
284 |
|
|
}
|
285 |
|
|
|
286 |
|
|
/**
|
287 |
|
|
* Query the metacat document store with the given metacat-compatible
|
288 |
|
|
* query document and qformat, and return the result set as a Reader.
|
289 |
|
|
*
|
290 |
|
|
* @param xmlQuery a Reader for accessing the XML version of the query
|
291 |
|
|
* @param qformat the format of return doc. It can be xml, knb, lter and etal.
|
292 |
|
|
* @return a Reader for accessing the result set
|
293 |
|
|
*/
|
294 |
|
|
public Reader query(Reader xmlQuery, String qformat) throws MetacatInaccessibleException,
|
295 |
|
|
IOException {
|
296 |
1786
|
tao
|
Reader reader = null;
|
297 |
|
|
String query = null;
|
298 |
1788
|
jones
|
try {
|
299 |
3285
|
barteau
|
query = IOUtil.getAsString(xmlQuery, true);
|
300 |
1788
|
jones
|
} catch (IOException ioE) {
|
301 |
3285
|
barteau
|
throw ioE;
|
302 |
1786
|
tao
|
}
|
303 |
3285
|
barteau
|
|
304 |
1786
|
tao
|
//set up properties
|
305 |
|
|
Properties prop = new Properties();
|
306 |
|
|
prop.put("action", "squery");
|
307 |
3464
|
tao
|
prop.put("qformat", qformat);
|
308 |
1786
|
tao
|
prop.put("query", query);
|
309 |
3285
|
barteau
|
|
310 |
1786
|
tao
|
InputStream response = null;
|
311 |
|
|
try {
|
312 |
2264
|
sgarg
|
response = sendData(prop, null, null, 0);
|
313 |
1786
|
tao
|
} catch (Exception e) {
|
314 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
315 |
|
|
}
|
316 |
|
|
reader = new InputStreamReader(response);
|
317 |
|
|
return reader;
|
318 |
1780
|
jones
|
}
|
319 |
3285
|
barteau
|
|
320 |
1780
|
jones
|
/**
|
321 |
|
|
* Insert an XML document into the repository.
|
322 |
|
|
*
|
323 |
|
|
* @param docid the docid to insert the document
|
324 |
|
|
* @param xmlDocument a Reader for accessing the XML document to be inserted
|
325 |
2240
|
sgarg
|
* @param schema a Reader for accessing the DTD or XML Schema for
|
326 |
1780
|
jones
|
* the document
|
327 |
1789
|
jones
|
* @return the metacat response message
|
328 |
2240
|
sgarg
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
329 |
1780
|
jones
|
* for the operation
|
330 |
1789
|
jones
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
331 |
|
|
* reached or does not respond
|
332 |
|
|
* @throws MetacatException when the metacat server generates another error
|
333 |
|
|
* @throws IOException when there is an error reading the xml document
|
334 |
1780
|
jones
|
*/
|
335 |
1789
|
jones
|
public String insert(String docid, Reader xmlDocument, Reader schema)
|
336 |
4296
|
daigle
|
throws InsufficientKarmaException, MetacatException, IOException,
|
337 |
3285
|
barteau
|
MetacatInaccessibleException {
|
338 |
4296
|
daigle
|
|
339 |
1789
|
jones
|
Reader reader = null;
|
340 |
|
|
String doctext = null;
|
341 |
|
|
String schematext = null;
|
342 |
|
|
try {
|
343 |
3285
|
barteau
|
doctext = IOUtil.getAsString(xmlDocument, true);
|
344 |
|
|
if (schema != null) {
|
345 |
|
|
schematext = IOUtil.getAsString(schema, true);
|
346 |
|
|
}
|
347 |
1789
|
jones
|
} catch (IOException ioE) {
|
348 |
3285
|
barteau
|
throw ioE;
|
349 |
1789
|
jones
|
}
|
350 |
3285
|
barteau
|
|
351 |
1789
|
jones
|
//set up properties
|
352 |
|
|
Properties prop = new Properties();
|
353 |
|
|
prop.put("action", "insert");
|
354 |
|
|
prop.put("docid", docid);
|
355 |
|
|
prop.put("doctext", doctext);
|
356 |
|
|
if (schematext != null) {
|
357 |
|
|
prop.put("dtdtext", schematext);
|
358 |
|
|
}
|
359 |
4296
|
daigle
|
|
360 |
|
|
if (sessionId != null) {
|
361 |
|
|
prop.put("sessionid", sessionId);
|
362 |
|
|
}
|
363 |
3285
|
barteau
|
|
364 |
1789
|
jones
|
String response = null;
|
365 |
|
|
try {
|
366 |
2264
|
sgarg
|
response = sendDataForString(prop, null, null, 0);
|
367 |
1789
|
jones
|
} catch (Exception e) {
|
368 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
369 |
|
|
}
|
370 |
3285
|
barteau
|
|
371 |
1789
|
jones
|
// Check for an error condition
|
372 |
|
|
if (response.indexOf("<error>") != -1) {
|
373 |
|
|
if (response.indexOf("does not have permission") != -1) {
|
374 |
|
|
throw new InsufficientKarmaException(response);
|
375 |
|
|
} else {
|
376 |
|
|
throw new MetacatException(response);
|
377 |
|
|
}
|
378 |
|
|
}
|
379 |
3285
|
barteau
|
|
380 |
1789
|
jones
|
return response;
|
381 |
1780
|
jones
|
}
|
382 |
3285
|
barteau
|
|
383 |
1780
|
jones
|
/**
|
384 |
|
|
* Update an XML document in the repository.
|
385 |
|
|
*
|
386 |
|
|
* @param docid the docid to update
|
387 |
|
|
* @param xmlDocument a Reader for accessing the XML text to be updated
|
388 |
2240
|
sgarg
|
* @param schema a Reader for accessing the DTD or XML Schema for
|
389 |
1780
|
jones
|
* the document
|
390 |
1795
|
jones
|
* @return the metacat response message
|
391 |
2240
|
sgarg
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
392 |
1780
|
jones
|
* for the operation
|
393 |
1795
|
jones
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
394 |
|
|
* reached or does not respond
|
395 |
|
|
* @throws MetacatException when the metacat server generates another error
|
396 |
|
|
* @throws IOException when there is an error reading the xml document
|
397 |
1780
|
jones
|
*/
|
398 |
1795
|
jones
|
public String update(String docid, Reader xmlDocument, Reader schema)
|
399 |
3285
|
barteau
|
throws InsufficientKarmaException, MetacatException, IOException,
|
400 |
|
|
MetacatInaccessibleException {
|
401 |
1795
|
jones
|
Reader reader = null;
|
402 |
|
|
String doctext = null;
|
403 |
|
|
String schematext = null;
|
404 |
|
|
try {
|
405 |
3285
|
barteau
|
doctext = IOUtil.getAsString(xmlDocument, true);
|
406 |
|
|
if (schema != null) {
|
407 |
|
|
schematext = IOUtil.getAsString(schema, true);
|
408 |
|
|
}
|
409 |
1795
|
jones
|
} catch (IOException ioE) {
|
410 |
3285
|
barteau
|
throw ioE;
|
411 |
1795
|
jones
|
}
|
412 |
3285
|
barteau
|
|
413 |
1795
|
jones
|
//set up properties
|
414 |
|
|
Properties prop = new Properties();
|
415 |
|
|
prop.put("action", "update");
|
416 |
|
|
prop.put("docid", docid);
|
417 |
|
|
prop.put("doctext", doctext);
|
418 |
|
|
if (schematext != null) {
|
419 |
|
|
prop.put("dtdtext", schematext);
|
420 |
|
|
}
|
421 |
3285
|
barteau
|
|
422 |
1795
|
jones
|
String response = null;
|
423 |
|
|
try {
|
424 |
2264
|
sgarg
|
response = sendDataForString(prop, null, null, 0);
|
425 |
1795
|
jones
|
} catch (Exception e) {
|
426 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
427 |
|
|
}
|
428 |
3285
|
barteau
|
|
429 |
1795
|
jones
|
// Check for an error condition
|
430 |
|
|
if (response.indexOf("<error>") != -1) {
|
431 |
|
|
if (response.indexOf("does not have permission") != -1) {
|
432 |
|
|
throw new InsufficientKarmaException(response);
|
433 |
|
|
} else {
|
434 |
|
|
throw new MetacatException(response);
|
435 |
|
|
}
|
436 |
|
|
}
|
437 |
3285
|
barteau
|
|
438 |
1795
|
jones
|
return response;
|
439 |
1780
|
jones
|
}
|
440 |
3285
|
barteau
|
|
441 |
1780
|
jones
|
/**
|
442 |
3721
|
jones
|
* Upload a data document into the repository. Data files are stored on
|
443 |
|
|
* metacat and may be in any format (binary or text), but they are all
|
444 |
|
|
* treated as if they were binary. Data files are not searched by the
|
445 |
|
|
* query() methods because they are not loaded into the XML store because
|
446 |
|
|
* they are not XML documents. The File parameter is used to determine a
|
447 |
|
|
* name for the uploaded document.
|
448 |
3285
|
barteau
|
*
|
449 |
3721
|
jones
|
* @param docid the identifier to be used for the document
|
450 |
|
|
* @param file the File to be uploaded
|
451 |
|
|
* @param document a InputStream containing the data to be uploaded
|
452 |
3285
|
barteau
|
* @return the metacat response message
|
453 |
|
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
454 |
|
|
* for the operation
|
455 |
|
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
456 |
|
|
* reached or does not respond
|
457 |
|
|
* @throws MetacatException when the metacat server generates another error
|
458 |
|
|
* @throws IOException when there is an error reading the xml document
|
459 |
|
|
*/
|
460 |
|
|
public String upload(String docid, File file)
|
461 |
|
|
throws InsufficientKarmaException, MetacatException, IOException,
|
462 |
|
|
MetacatInaccessibleException {
|
463 |
|
|
|
464 |
|
|
URL url = new URL(metacatUrl.trim());
|
465 |
|
|
HttpMessage msg = new HttpMessage(url);
|
466 |
|
|
//set up properties
|
467 |
|
|
Properties arg = new Properties();
|
468 |
|
|
arg.put("action", "upload");
|
469 |
|
|
arg.put("docid", docid);
|
470 |
|
|
|
471 |
|
|
Properties filenames = new Properties();
|
472 |
|
|
String filename = file.getAbsolutePath();
|
473 |
|
|
filenames.put("datafile", filename);
|
474 |
|
|
|
475 |
|
|
String response = null;
|
476 |
|
|
try {
|
477 |
2264
|
sgarg
|
response = sendDataForString(arg, filenames, null, 0);
|
478 |
3285
|
barteau
|
} catch (Exception e) {
|
479 |
2240
|
sgarg
|
throw new MetacatInaccessibleException(e.getMessage());
|
480 |
3285
|
barteau
|
}
|
481 |
|
|
|
482 |
|
|
// Check for an error condition
|
483 |
|
|
if (response.indexOf("<error>") != -1) {
|
484 |
2240
|
sgarg
|
if (response.indexOf("does not have permission") != -1) {
|
485 |
3285
|
barteau
|
throw new InsufficientKarmaException(response);
|
486 |
2240
|
sgarg
|
} else {
|
487 |
3285
|
barteau
|
throw new MetacatException(response);
|
488 |
2240
|
sgarg
|
}
|
489 |
3285
|
barteau
|
}
|
490 |
|
|
|
491 |
|
|
return response;
|
492 |
|
|
}
|
493 |
|
|
|
494 |
|
|
/**
|
495 |
3721
|
jones
|
* Upload a data document into the repository. Data files are stored on
|
496 |
|
|
* metacat and may be in any format (binary or text), but they are all
|
497 |
|
|
* treated as if they were binary. Data files are not searched by the
|
498 |
|
|
* query() methods because they are not loaded into the XML store because
|
499 |
|
|
* they are not XML documents. The name for the document is set explicitly
|
500 |
|
|
* using the filename parameter.
|
501 |
3285
|
barteau
|
*
|
502 |
3721
|
jones
|
* @param docid the identifier to be used for the document
|
503 |
|
|
* @param filename the name to be used in the MIME description of the uploaded file
|
504 |
|
|
* @param document a InputStream containing the data to be uploaded
|
505 |
3285
|
barteau
|
* @return the metacat response message
|
506 |
|
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
507 |
|
|
* for the operation
|
508 |
|
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
509 |
|
|
* reached or does not respond
|
510 |
|
|
* @throws MetacatException when the metacat server generates another error
|
511 |
|
|
* @throws IOException when there is an error reading the xml document
|
512 |
|
|
*/
|
513 |
|
|
public String upload(String docid, String filename, InputStream fileData,
|
514 |
|
|
int size)
|
515 |
|
|
throws InsufficientKarmaException, MetacatException, IOException,
|
516 |
|
|
MetacatInaccessibleException {
|
517 |
|
|
|
518 |
|
|
URL url = new URL(metacatUrl.trim());
|
519 |
|
|
HttpMessage msg = new HttpMessage(url);
|
520 |
|
|
//set up properties
|
521 |
|
|
Properties arg = new Properties();
|
522 |
|
|
arg.put("action", "upload");
|
523 |
|
|
arg.put("docid", docid);
|
524 |
|
|
|
525 |
|
|
Properties filenames = new Properties();
|
526 |
|
|
filenames.put("datafile", filename);
|
527 |
|
|
|
528 |
|
|
String response = null;
|
529 |
|
|
try {
|
530 |
2264
|
sgarg
|
response = sendDataForString(arg, filenames, fileData, size);
|
531 |
3285
|
barteau
|
} catch (Exception e) {
|
532 |
2264
|
sgarg
|
throw new MetacatInaccessibleException(e.getMessage());
|
533 |
3285
|
barteau
|
}
|
534 |
|
|
|
535 |
|
|
// Check for an error condition
|
536 |
|
|
if (response.indexOf("<error>") != -1) {
|
537 |
2264
|
sgarg
|
if (response.indexOf("does not have permission") != -1) {
|
538 |
3285
|
barteau
|
throw new InsufficientKarmaException(response);
|
539 |
2264
|
sgarg
|
} else {
|
540 |
3285
|
barteau
|
throw new MetacatException(response);
|
541 |
2264
|
sgarg
|
}
|
542 |
3285
|
barteau
|
}
|
543 |
|
|
|
544 |
|
|
return response;
|
545 |
|
|
}
|
546 |
|
|
|
547 |
2240
|
sgarg
|
/**
|
548 |
1780
|
jones
|
* Delete an XML document in the repository.
|
549 |
|
|
*
|
550 |
|
|
* @param docid the docid to delete
|
551 |
1795
|
jones
|
* @return the metacat response message
|
552 |
2240
|
sgarg
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
553 |
1780
|
jones
|
* for the operation
|
554 |
1795
|
jones
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
555 |
|
|
* reached or does not respond
|
556 |
|
|
* @throws MetacatException when the metacat server generates another error
|
557 |
1780
|
jones
|
*/
|
558 |
1795
|
jones
|
public String delete(String docid)
|
559 |
3285
|
barteau
|
throws InsufficientKarmaException, MetacatException,
|
560 |
|
|
MetacatInaccessibleException {
|
561 |
1795
|
jones
|
//set up properties
|
562 |
|
|
Properties prop = new Properties();
|
563 |
|
|
prop.put("action", "delete");
|
564 |
|
|
prop.put("docid", docid);
|
565 |
3285
|
barteau
|
|
566 |
1795
|
jones
|
String response = null;
|
567 |
|
|
try {
|
568 |
2264
|
sgarg
|
response = sendDataForString(prop, null, null, 0);
|
569 |
1795
|
jones
|
} catch (Exception e) {
|
570 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
571 |
|
|
}
|
572 |
3285
|
barteau
|
|
573 |
1795
|
jones
|
// Check for an error condition
|
574 |
|
|
if (response.indexOf("<error>") != -1) {
|
575 |
|
|
if (response.indexOf("does not have permission") != -1) {
|
576 |
|
|
throw new InsufficientKarmaException(response);
|
577 |
|
|
} else {
|
578 |
|
|
throw new MetacatException(response);
|
579 |
|
|
}
|
580 |
|
|
}
|
581 |
2326
|
harris
|
return response;
|
582 |
|
|
}
|
583 |
3285
|
barteau
|
|
584 |
|
|
|
585 |
2326
|
harris
|
/**
|
586 |
|
|
* set the access on an XML document in the repository.
|
587 |
|
|
*
|
588 |
2327
|
harris
|
* @param _docid the docid of the document for which the access should be applied.
|
589 |
2326
|
harris
|
*
|
590 |
|
|
* @param _principal the document's principal
|
591 |
|
|
*
|
592 |
|
|
* @param _permission the access permission to be applied to the docid
|
593 |
|
|
* {e.g. read,write,all}
|
594 |
|
|
*
|
595 |
|
|
* @param _permType the permission type to be applied to the document
|
596 |
|
|
* {e.g. allow or deny}
|
597 |
|
|
*
|
598 |
|
|
* @param _permOrder the order that the document's permissions should be
|
599 |
|
|
* processed {e.g. denyFirst or allowFirst}
|
600 |
|
|
*
|
601 |
|
|
*
|
602 |
|
|
* @return the metacat response message
|
603 |
|
|
*
|
604 |
|
|
* @throws InsufficientKarmaException when the user has insufficent rights
|
605 |
|
|
* for the operation
|
606 |
|
|
* @throws MetacatInaccessibleException when the metacat server can not be
|
607 |
|
|
* reached or does not respond
|
608 |
|
|
* @throws MetacatException when the metacat server generates another error
|
609 |
|
|
*/
|
610 |
|
|
public String setAccess(String _docid, String _principal, String
|
611 |
3285
|
barteau
|
_permission, String _permType,
|
612 |
|
|
String _permOrder )
|
613 |
|
|
throws InsufficientKarmaException, MetacatException,
|
614 |
|
|
MetacatInaccessibleException {
|
615 |
2326
|
harris
|
//set up properties
|
616 |
|
|
Properties prop = new Properties();
|
617 |
|
|
prop.put("action", "setaccess");
|
618 |
|
|
prop.put("docid", _docid);
|
619 |
|
|
prop.put("principal", _principal);
|
620 |
|
|
prop.put("permission", _permission);
|
621 |
|
|
prop.put("permType", _permType);
|
622 |
|
|
prop.put("permOrder", _permOrder);
|
623 |
3285
|
barteau
|
|
624 |
2326
|
harris
|
String response = null;
|
625 |
|
|
try {
|
626 |
|
|
response = sendDataForString(prop, null, null, 0);
|
627 |
|
|
} catch (Exception e) {
|
628 |
|
|
throw new MetacatInaccessibleException(e.getMessage());
|
629 |
|
|
}
|
630 |
3285
|
barteau
|
|
631 |
2326
|
harris
|
// Check for an error condition
|
632 |
|
|
if (response.indexOf("<error>") != -1) {
|
633 |
|
|
if (response.indexOf("does not have permission") != -1) {
|
634 |
|
|
throw new InsufficientKarmaException(response);
|
635 |
|
|
} else {
|
636 |
|
|
throw new MetacatException(response);
|
637 |
|
|
}
|
638 |
|
|
}
|
639 |
1795
|
jones
|
return response;
|
640 |
1780
|
jones
|
}
|
641 |
3285
|
barteau
|
|
642 |
1780
|
jones
|
/**
|
643 |
|
|
* When the MetacatFactory creates an instance it needs to set the
|
644 |
|
|
* MetacatUrl to which connections should be made.
|
645 |
|
|
*
|
646 |
|
|
* @param metacatUrl the URL for the metacat server
|
647 |
|
|
*/
|
648 |
3285
|
barteau
|
public void setMetacatUrl(String metacatUrl) {
|
649 |
1783
|
jones
|
this.metacatUrl = metacatUrl;
|
650 |
1780
|
jones
|
}
|
651 |
3285
|
barteau
|
|
652 |
1822
|
jones
|
/**
|
653 |
|
|
* Get the session identifier for this session. This is only valid if
|
654 |
|
|
* the login methods has been called successfully for this Metacat object
|
655 |
|
|
* beforehand.
|
656 |
|
|
*
|
657 |
|
|
* @returns the sessionId as a String, or null if the session is invalid
|
658 |
|
|
*/
|
659 |
3285
|
barteau
|
public String getSessionId() {
|
660 |
1822
|
jones
|
return this.sessionId;
|
661 |
|
|
}
|
662 |
3285
|
barteau
|
|
663 |
1826
|
jones
|
/**
|
664 |
2240
|
sgarg
|
* Set the session identifier for this session. This identifier was
|
665 |
|
|
* previously established with a call to login. To continue to use the
|
666 |
1826
|
jones
|
* same session, set the session id before making a call to one of the
|
667 |
|
|
* metacat access methods (e.g., read, query, insert, etc.).
|
668 |
|
|
*
|
669 |
|
|
* @param String the sessionId from a previously established session
|
670 |
|
|
*/
|
671 |
3285
|
barteau
|
public void setSessionId(String sessionId) {
|
672 |
1826
|
jones
|
this.sessionId = sessionId;
|
673 |
|
|
}
|
674 |
2337
|
tao
|
|
675 |
|
|
/**
|
676 |
3285
|
barteau
|
* The method will return the latest revision in metacat server
|
677 |
2981
|
jones
|
* for a given document id. If some error happens, this method will throw
|
678 |
3285
|
barteau
|
* an exception.
|
679 |
2337
|
tao
|
* @param docId String the given docid you want to use. the docid it self
|
680 |
|
|
* can have or haven't revision number
|
681 |
|
|
* @throws MetacatException
|
682 |
|
|
*/
|
683 |
3285
|
barteau
|
public int getNewestDocRevision(String docId) throws MetacatException {
|
684 |
|
|
int rev = 0;
|
685 |
|
|
//set up properties
|
686 |
|
|
Properties prop = new Properties();
|
687 |
|
|
prop.put("action", "getrevisionanddoctype");
|
688 |
|
|
prop.put("docid", docId);
|
689 |
|
|
|
690 |
|
|
String response = null;
|
691 |
|
|
try {
|
692 |
|
|
response = sendDataForString(prop, null, null, 0);
|
693 |
|
|
//parseRevisionResponse will return null if there is an
|
694 |
|
|
//error that it can't handle
|
695 |
|
|
String revStr = parserRevisionResponse(response);
|
696 |
|
|
Integer revObj = new Integer(revStr);
|
697 |
|
|
rev = revObj.intValue();
|
698 |
|
|
// Check for an error condition
|
699 |
|
|
if (response.indexOf("<error>") != -1 && revStr == null) {
|
700 |
|
|
throw new MetacatException(response);
|
701 |
|
|
}
|
702 |
|
|
} catch (Exception e) {
|
703 |
|
|
throw new MetacatException(e.getMessage());
|
704 |
|
|
}
|
705 |
|
|
return rev;
|
706 |
|
|
}
|
707 |
|
|
|
708 |
2981
|
jones
|
/**
|
709 |
|
|
* Return the highest document id for a given scope. This is used by
|
710 |
|
|
* clients to make it easier to determine the next free identifier in a
|
711 |
3285
|
barteau
|
* sequence for a given scope.
|
712 |
2981
|
jones
|
* @param scope String the scope to use for looking up the latest id
|
713 |
|
|
* @throws MetacatException when an error occurs
|
714 |
|
|
*/
|
715 |
|
|
public String getLastDocid(String scope) throws MetacatException {
|
716 |
|
|
String lastIdentifier = "";
|
717 |
|
|
//set up properties
|
718 |
|
|
Properties prop = new Properties();
|
719 |
|
|
prop.put("action", "getlastdocid");
|
720 |
|
|
prop.put("scope", scope);
|
721 |
3285
|
barteau
|
|
722 |
2981
|
jones
|
String response = null;
|
723 |
|
|
try {
|
724 |
2337
|
tao
|
response = sendDataForString(prop, null, null, 0);
|
725 |
|
|
// Check for an error condition
|
726 |
2981
|
jones
|
if (response.indexOf("<error>") != -1) {
|
727 |
3285
|
barteau
|
throw new MetacatException(response);
|
728 |
2981
|
jones
|
} else {
|
729 |
|
|
Reader responseReader = new StringReader(response);
|
730 |
3285
|
barteau
|
Node root =
|
731 |
|
|
XMLUtilities.getXMLReaderAsDOMTreeRootNode(responseReader);
|
732 |
|
|
Node docidNode =
|
733 |
|
|
XMLUtilities.getNodeWithXPath(root, "/lastDocid/docid");
|
734 |
2986
|
jones
|
lastIdentifier = docidNode.getFirstChild().getNodeValue();
|
735 |
2981
|
jones
|
}
|
736 |
|
|
} catch (Exception e) {
|
737 |
2337
|
tao
|
throw new MetacatException(e.getMessage());
|
738 |
|
|
}
|
739 |
2981
|
jones
|
return lastIdentifier;
|
740 |
|
|
}
|
741 |
3141
|
berkley
|
|
742 |
|
|
/**
|
743 |
|
|
* return a list of all docids that match a given scope. if scope is null
|
744 |
|
|
* return all docids registered in the system
|
745 |
|
|
* @param scope String the scope to use to limit the docid query
|
746 |
|
|
* @throws MetacatException when an error occurs
|
747 |
|
|
*/
|
748 |
|
|
public Vector getAllDocids(String scope) throws MetacatException {
|
749 |
|
|
Vector resultVec = new Vector();
|
750 |
|
|
//set up properties
|
751 |
|
|
Properties prop = new Properties();
|
752 |
|
|
prop.put("action", "getalldocids");
|
753 |
3285
|
barteau
|
if(scope != null) {
|
754 |
|
|
prop.put("scope", scope);
|
755 |
3141
|
berkley
|
}
|
756 |
3285
|
barteau
|
|
757 |
3141
|
berkley
|
String response = null;
|
758 |
|
|
try {
|
759 |
|
|
response = sendDataForString(prop, null, null, 0);
|
760 |
|
|
// Check for an error condition
|
761 |
|
|
if (response.indexOf("<error>") != -1) {
|
762 |
3285
|
barteau
|
throw new MetacatException(response);
|
763 |
3141
|
berkley
|
} else {
|
764 |
|
|
Reader responseReader = new StringReader(response);
|
765 |
3285
|
barteau
|
Node root =
|
766 |
|
|
XMLUtilities.getXMLReaderAsDOMTreeRootNode(responseReader);
|
767 |
3141
|
berkley
|
NodeList nlist = root.getChildNodes();
|
768 |
3285
|
barteau
|
for(int i=0; i<nlist.getLength(); i++) {
|
769 |
|
|
Node n = nlist.item(i);
|
770 |
|
|
if(n.getNodeName().equals("docid")) {
|
771 |
|
|
//add the content to the return vector
|
772 |
|
|
String nodeVal = n.getFirstChild().getNodeValue();
|
773 |
|
|
resultVec.addElement(nodeVal);
|
774 |
|
|
}
|
775 |
3141
|
berkley
|
}
|
776 |
|
|
|
777 |
|
|
}
|
778 |
|
|
} catch (Exception e) {
|
779 |
|
|
throw new MetacatException(e.getMessage());
|
780 |
|
|
}
|
781 |
|
|
return resultVec;
|
782 |
|
|
}
|
783 |
3143
|
berkley
|
|
784 |
|
|
/**
|
785 |
|
|
* return true of the given docid is registered, false if not
|
786 |
|
|
* @param scope String the scope to use to limit the docid query
|
787 |
|
|
* @throws MetacatException when an error occurs
|
788 |
|
|
*/
|
789 |
|
|
public boolean isRegistered(String docid) throws MetacatException {
|
790 |
|
|
Vector resultVec = new Vector();
|
791 |
|
|
//set up properties
|
792 |
|
|
Properties prop = new Properties();
|
793 |
|
|
prop.put("action", "isregistered");
|
794 |
3285
|
barteau
|
if(docid == null) {
|
795 |
|
|
throw new MetacatException("<error>Cannot check if a null docid " +
|
796 |
|
|
"is registered.</error>");
|
797 |
3143
|
berkley
|
}
|
798 |
|
|
prop.put("docid", docid);
|
799 |
3285
|
barteau
|
|
800 |
3143
|
berkley
|
String response = null;
|
801 |
|
|
try {
|
802 |
|
|
response = sendDataForString(prop, null, null, 0);
|
803 |
|
|
// Check for an error condition
|
804 |
|
|
if (response.indexOf("<error>") != -1) {
|
805 |
3285
|
barteau
|
throw new MetacatException(response);
|
806 |
3143
|
berkley
|
} else {
|
807 |
|
|
Reader responseReader = new StringReader(response);
|
808 |
|
|
StringBuffer sb = new StringBuffer();
|
809 |
|
|
char[] c = new char[1024];
|
810 |
|
|
int numread = responseReader.read(c, 0, 1024);
|
811 |
3285
|
barteau
|
while(numread != -1) {
|
812 |
|
|
sb.append(new String(c, 0, numread));
|
813 |
|
|
numread = responseReader.read(c, 0, 1024);
|
814 |
3143
|
berkley
|
}
|
815 |
|
|
|
816 |
|
|
String responseStr = sb.toString();
|
817 |
3285
|
barteau
|
if(responseStr.indexOf("true") != -1) {
|
818 |
|
|
return true;
|
819 |
3143
|
berkley
|
}
|
820 |
|
|
return false;
|
821 |
|
|
}
|
822 |
|
|
} catch (Exception e) {
|
823 |
|
|
throw new MetacatException(e.getMessage());
|
824 |
|
|
}
|
825 |
|
|
}
|
826 |
3285
|
barteau
|
|
827 |
3481
|
barteau
|
/**
|
828 |
|
|
* Send a request to Metacat. An alternative to the sentData method.
|
829 |
|
|
* Allows for sending multiple parameters with the same name,
|
830 |
|
|
* different names, or any combo. Send properties where the entry
|
831 |
|
|
* key contains the "param value",
|
832 |
|
|
* and the entry value contains the "param name".
|
833 |
|
|
* Constraint: param values must be unique.
|
834 |
|
|
*
|
835 |
|
|
* @return InputStream as returned by Metacat
|
836 |
|
|
* @param args Properties of the parameters to be sent to Metacat, where,
|
837 |
|
|
* key = param value
|
838 |
|
|
* value = param name
|
839 |
|
|
* @throws java.lang.Exception thrown
|
840 |
|
|
*/
|
841 |
|
|
synchronized public InputStream sendParameters(Properties args) throws Exception {
|
842 |
|
|
InputStream result = null;
|
843 |
|
|
URL url;
|
844 |
|
|
HttpMessage httpMsg;
|
845 |
|
|
|
846 |
|
|
url = new URL(metacatUrl);
|
847 |
|
|
httpMsg = new HttpMessage(url);
|
848 |
|
|
httpMsg.setCookie("JSESSIONID="+this.sessionId);
|
849 |
|
|
result = httpMsg.sendPostParameters(args);
|
850 |
|
|
return(result);
|
851 |
|
|
}
|
852 |
|
|
|
853 |
1780
|
jones
|
/************************************************************************
|
854 |
|
|
* PRIVATE METHODS
|
855 |
|
|
************************************************************************/
|
856 |
3285
|
barteau
|
|
857 |
1783
|
jones
|
/**
|
858 |
|
|
* Send a request to metacat.
|
859 |
|
|
*
|
860 |
|
|
* @param prop the properties to be URL encoded and sent
|
861 |
2264
|
sgarg
|
* @param filename the properties to be sent to Metacat
|
862 |
|
|
* in case of upload, otherwise null
|
863 |
|
|
* @param fileData the inputStream for the file data to be sent to Metacat
|
864 |
|
|
* in case of upload, otherwise null
|
865 |
|
|
* @param size the size of the data being sent to Metacat
|
866 |
|
|
* in case of upload, otherwise 0
|
867 |
1783
|
jones
|
*/
|
868 |
2240
|
sgarg
|
synchronized private InputStream sendDataOnce(Properties args,
|
869 |
3285
|
barteau
|
Properties filename,
|
870 |
|
|
InputStream fileData,
|
871 |
|
|
int size)
|
872 |
|
|
throws Exception {
|
873 |
1780
|
jones
|
InputStream returnStream = null;
|
874 |
|
|
URL url = new URL(metacatUrl);
|
875 |
|
|
HttpMessage msg = new HttpMessage(url);
|
876 |
1828
|
jones
|
msg.setCookie("JSESSIONID="+this.sessionId);
|
877 |
2264
|
sgarg
|
if (filename == null){
|
878 |
|
|
returnStream = msg.sendPostData(args);
|
879 |
|
|
} else if (fileData == null){
|
880 |
|
|
returnStream = msg.sendPostData(args, filename);
|
881 |
|
|
} else if (size > 0) {
|
882 |
|
|
returnStream = msg.sendPostData(args, filename, fileData, size);
|
883 |
2240
|
sgarg
|
} else {
|
884 |
2264
|
sgarg
|
throw new MetacatException("Invalid size specified for " +
|
885 |
3285
|
barteau
|
"the input stream being passed");
|
886 |
2240
|
sgarg
|
}
|
887 |
1780
|
jones
|
return returnStream;
|
888 |
|
|
}
|
889 |
3285
|
barteau
|
|
890 |
1780
|
jones
|
/**
|
891 |
|
|
* Send a request to Metacat
|
892 |
|
|
*
|
893 |
2264
|
sgarg
|
* @param args the properties to be sent to Metacat
|
894 |
|
|
* @param filename the properties to be sent to Metacat
|
895 |
|
|
* in case of upload, otherwise null
|
896 |
|
|
* @param fileData the inputStream for the file data to be sent to Metacat
|
897 |
|
|
* in case of upload, otherwise null
|
898 |
|
|
* @param size the size of the data being sent to Metacat
|
899 |
|
|
* in case of upload, otherwise 0
|
900 |
1780
|
jones
|
* @return InputStream as returned by Metacat
|
901 |
|
|
*/
|
902 |
3316
|
barteau
|
synchronized public InputStream sendData(Properties args,
|
903 |
3285
|
barteau
|
Properties filename,
|
904 |
|
|
InputStream fileData,
|
905 |
|
|
int size)
|
906 |
|
|
throws Exception {
|
907 |
1780
|
jones
|
InputStream returnStream = null;
|
908 |
|
|
/*
|
909 |
|
|
Note: The reason that there are three try statements all executing
|
910 |
|
|
the same code is that there is a problem with the initial connection
|
911 |
2240
|
sgarg
|
using the HTTPClient protocol handler. These try statements make
|
912 |
|
|
sure that a connection is made because it gives each connection a
|
913 |
1780
|
jones
|
2nd and 3rd chance to work before throwing an error.
|
914 |
|
|
THIS IS A TOTAL HACK. THIS NEEDS TO BE LOOKED INTO AFTER THE BETA1
|
915 |
|
|
RELEASE OF MORPHO!!! cwb (7/24/01)
|
916 |
3285
|
barteau
|
*/
|
917 |
1780
|
jones
|
try {
|
918 |
3285
|
barteau
|
return sendDataOnce(args, filename, fileData, size);
|
919 |
1780
|
jones
|
} catch (Exception e) {
|
920 |
|
|
try {
|
921 |
2264
|
sgarg
|
return sendDataOnce(args, filename, fileData, size);
|
922 |
1780
|
jones
|
} catch (Exception e2) {
|
923 |
|
|
try {
|
924 |
2264
|
sgarg
|
return sendDataOnce(args, filename, fileData, size);
|
925 |
1780
|
jones
|
} catch (Exception e3) {
|
926 |
|
|
System.err.println(
|
927 |
3196
|
berkley
|
"Failed to send data to metacat 3 times: " + e3.getMessage());
|
928 |
|
|
System.err.println("metacaturl: " + metacatUrl);
|
929 |
1780
|
jones
|
throw e3;
|
930 |
|
|
}
|
931 |
|
|
}
|
932 |
|
|
}
|
933 |
|
|
}
|
934 |
3285
|
barteau
|
|
935 |
1783
|
jones
|
/**
|
936 |
|
|
* Send a request to Metacat
|
937 |
|
|
*
|
938 |
2264
|
sgarg
|
* @param args the properties to be sent to Metacat
|
939 |
|
|
* @param filename the properties to be sent to Metacat
|
940 |
|
|
* in case of upload, otherwise null
|
941 |
|
|
* @param fileData the inputStream for the file data to be sent to Metacat
|
942 |
|
|
* in case of upload, otherwise null
|
943 |
|
|
* @param size the size of the data being sent to Metacat
|
944 |
|
|
* in case of upload, otherwise 0
|
945 |
|
|
* @return a string as returned by Metacat
|
946 |
1783
|
jones
|
*/
|
947 |
2240
|
sgarg
|
synchronized private String sendDataForString(Properties args,
|
948 |
3285
|
barteau
|
Properties filename,
|
949 |
|
|
InputStream fileData,
|
950 |
|
|
int size)
|
951 |
|
|
throws Exception {
|
952 |
1783
|
jones
|
String response = null;
|
953 |
3285
|
barteau
|
|
954 |
1783
|
jones
|
try {
|
955 |
|
|
InputStreamReader returnStream =
|
956 |
2264
|
sgarg
|
new InputStreamReader(sendData(args, filename,
|
957 |
3285
|
barteau
|
fileData, size));
|
958 |
1783
|
jones
|
StringWriter sw = new StringWriter();
|
959 |
|
|
int len;
|
960 |
|
|
char[] characters = new char[512];
|
961 |
|
|
while ((len = returnStream.read(characters, 0, 512)) != -1) {
|
962 |
|
|
sw.write(characters, 0, len);
|
963 |
|
|
}
|
964 |
|
|
returnStream.close();
|
965 |
|
|
response = sw.toString();
|
966 |
|
|
sw.close();
|
967 |
|
|
} catch (Exception e) {
|
968 |
|
|
throw e;
|
969 |
|
|
}
|
970 |
|
|
return response;
|
971 |
|
|
}
|
972 |
2337
|
tao
|
|
973 |
|
|
/*
|
974 |
|
|
* "getversionanddoctype" action will return a string from metacat server.
|
975 |
|
|
* The string format is "revision;doctype"(This is bad idea, we should use xml)
|
976 |
|
|
* This method will get revision string from the response string
|
977 |
|
|
*/
|
978 |
3285
|
barteau
|
private String parserRevisionResponse(String response) throws Exception {
|
979 |
|
|
String revision = null;
|
980 |
|
|
if (response != null) {
|
981 |
|
|
if(response.indexOf("<error>") != -1) {
|
982 |
|
|
if(response.indexOf("There is not record") != -1) {
|
983 |
|
|
return "0";
|
984 |
|
|
} else {
|
985 |
|
|
return null;
|
986 |
|
|
}
|
987 |
|
|
} else {
|
988 |
|
|
int firstSemiCol = response.indexOf(";");
|
989 |
|
|
revision = response.substring(0, firstSemiCol);
|
990 |
|
|
}
|
991 |
2992
|
berkley
|
}
|
992 |
3285
|
barteau
|
return revision;
|
993 |
|
|
}
|
994 |
|
|
|
995 |
|
|
/**
|
996 |
|
|
* JSP API: This is a convenience method to reduce the amount of code in a Metacat Client
|
997 |
|
|
* JSP. It handles creating/reusing an instance of a MetacatClient.
|
998 |
|
|
* @param request Since this is intended to be used by a JSP, it is passed the
|
999 |
|
|
* available "request" variable (the HttpServletRequest).
|
1000 |
|
|
* @throws edu.ucsb.nceas.metacat.client.MetacatInaccessibleException Received by MetacatFactory.
|
1001 |
|
|
* @return MetacatClient instance.
|
1002 |
|
|
*/
|
1003 |
3316
|
barteau
|
public static MetacatClient getMetacatClient(HttpServletRequest request) throws MetacatInaccessibleException {
|
1004 |
3285
|
barteau
|
MetacatClient result;
|
1005 |
|
|
String metacatPath = "http://%1$s%2$s/metacat";
|
1006 |
|
|
String host, context;
|
1007 |
|
|
javax.servlet.http.HttpSession session;
|
1008 |
|
|
|
1009 |
|
|
session = request.getSession();
|
1010 |
|
|
result = (MetacatClient) session.getAttribute("MetacatClient");
|
1011 |
|
|
if (result == null) {
|
1012 |
|
|
host = request.getHeader("host");
|
1013 |
|
|
context = request.getContextPath();
|
1014 |
3362
|
barteau
|
metacatPath = metacatPath.replaceFirst("%1$s", host);
|
1015 |
|
|
metacatPath = metacatPath.replaceFirst("%2$s", context);
|
1016 |
3285
|
barteau
|
result = (MetacatClient) MetacatFactory.createMetacatConnection(metacatPath);
|
1017 |
|
|
session.setAttribute("MetacatClient", result);
|
1018 |
|
|
}
|
1019 |
|
|
return(result);
|
1020 |
|
|
}
|
1021 |
|
|
|
1022 |
1780
|
jones
|
}
|