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/**
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* '$RCSfile$'
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* Copyright: 2006 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: daigle $'
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* '$Date: 2008-07-15 09:58:15 -0700 (Tue, 15 Jul 2008) $'
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* '$Revision: 4123 $'
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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;
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import java.io.File;
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import java.util.Hashtable;
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import edu.ucsb.nceas.metacat.service.PropertyService;
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import edu.ucsb.nceas.metacat.service.ServiceException;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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/**
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* Generate a pathquery document representing a metacat query for a list of
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* document IDs.
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*/
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public class DocumentIdQuery
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{
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/**
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* Create an squery parameters table using an already-initialized hashtable
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*
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* @param docidList an array of document identifiers to search for
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* @param params the hashtable to add the query parameters to.
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*
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*/
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public static Hashtable createDocidQueryParams(String[] docidList, Hashtable params)
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{
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params = getDefaultQueryParams();
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if (docidList != null) {
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params.put("/eml/@packageId", docidList);
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}
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return params;
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}
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/**
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* Create an squery using some preset values for the query parameters, only
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* passing in the document ids to be searched.
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*
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* @param docidList an array of document identifiers to search for
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*/
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public static String createDocidQuery(String[] docidList) throws PropertyNotFoundException
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{
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String pathQuery = "";
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Hashtable params = getDefaultQueryParams();
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if (docidList != null) {
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params.put("/eml/@packageId", docidList);
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}
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pathQuery = DBQuery.createSQuery(params);
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return pathQuery;
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}
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/**
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* Create a paramter list containing default parameters for a query
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*
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* @return Hashtable containing the default parameters
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*/
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public static Hashtable getDefaultQueryParams()
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{
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Hashtable params = new Hashtable();
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String[] operator = new String[1];
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operator[0] = "UNION";
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params.put("operator", operator);
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String[] doctypes = new String[5];
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doctypes[0] = "eml://ecoinformatics.org/eml-2.0.1";
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doctypes[1] = "eml://ecoinformatics.org/eml-2.0.0";
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doctypes[2] = "-//ecoinformatics.org//eml-dataset-2.0.0beta6//EN";
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doctypes[3] = "-//ecoinformatics.org//eml-dataset-2.0.0beta4//EN";
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doctypes[4] = "metadata";
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params.put("returndoctype", doctypes);
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String[] fields = new String[11];
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fields[0]="originator/individualName/surName";
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fields[1]="originator/individualName/givenName";
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fields[2]="creator/individualName/surName";
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fields[3]="creator/individualName/givenName";
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fields[4]="originator/organizationName";
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fields[5]="creator/organizationName";
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fields[6]="dataset/title";
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fields[7]="keyword";
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fields[8]="idinfo/citation/citeinfo/title";
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fields[9]="idinfo/citation/citeinfo/origin";
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fields[10]="idinfo/keywords/theme/themekey";
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params.put("returnfield", fields);
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return params;
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}
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/**
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* Main method used for testing the class output
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*
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* @param args no arguments used in this main method
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*/
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public static void main(String[] args)
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{
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String CONFIG_DIR = "lib";
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File dirPath = new File(CONFIG_DIR);
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try {
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PropertyService.getInstance(dirPath.getPath());
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} catch (ServiceException ioe) {
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System.err.println("Error in loading properties: "
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+ ioe.getMessage());
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}
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String[] ids = new String[3];
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ids[0] = "ces_dataset.23.1";
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ids[1] = "knb-lter-vcr.97.1";
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ids[2] = "obfs.400.1";
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String pathquery = null;
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try {
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pathquery = createDocidQuery(ids);
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} catch (PropertyNotFoundException pnfe) {
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System.out.println("Could not create doc id query: " + pnfe.getMessage());
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}
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System.out.println(pathquery);
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}
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}
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