Metacat

import edu.ucsb.nceas.utilities.IOUtil;

import java.io.FileReader;

import java.io.InputStreamReader;

import java.io.IOException;

import java.io.Reader;

import java.io.StringWriter;

    private String docid = "jones.204.22";

    private String testfile = "test/jones.204.22.xml";

    //private String docid = "Gramling.61.26";

    private String testdocument = "";

            FileReader fr = new FileReader(testfile);

            StringBuffer buf = IOUtil.getAsStringBuffer(fr, true);

            testdocument = buf.toString();

        } catch (IOException ioe) {

            fail("Can't read test data to run the test: " + testfile);

        }

        try {

        suite.addTest(new MetacatClientTest("read"));

    /**

     * Test the read() function with a known document

     */

    public void read()

    {

        try {

            m.login(username, password);

            Reader r = m.read(docid);

            String doc = readerToString(r);

            System.err.println(doc);

            assertTrue(doc.equals(testdocument));

        } catch (MetacatAuthException mae) {

            fail("Authorization failed:\n" + mae.getMessage());

        } catch (MetacatInaccessibleException mie) {

            fail("Metacat Inaccessible:\n" + mie.getMessage());

        } catch (Exception e) {

            fail("General exception:\n" + e.getMessage());

        }

    }

/*

 * PRIVATE METHODS

 */

    /**

     * Utility method to convert a reader to a String.

     *

     * @param reader the Reader to be converted

     * @return a String representation fo the data read

     */

    private String readerToString(Reader reader) throws Exception

    {

        String response = null;

        try {

            StringWriter sw = new StringWriter();

            int len;

            char[] characters = new char[512];

            while ((len = reader.read(characters, 0, 512)) != -1) {

                sw.write(characters, 0, len);

            }

            response = sw.toString();

            sw.close();

            reader.close();

        } catch (Exception e) {

            throw e;

        }

        return response;

    }

import java.io.PushbackReader;

import java.io.IOException;

     * @throws MetacatInaccessibleException when the metacat server can not be

     *                                    reached or does not respond

     * @throws MetacatException when the metacat server generates another error

    public Reader read(String docid) throws InsufficientKarmaException,

        MetacatInaccessibleException, MetacatException

        PushbackReader pbr = null;

        Properties prop = new Properties();

        prop.put("action", "read");

        prop.put("qformat", "xml");

        prop.put("docid", docid);

        InputStream response = null;

        try {

            response = sendData(prop);

        } catch (Exception e) {

            throw new MetacatInaccessibleException(e.getMessage());

        }

        pbr = new PushbackReader(new InputStreamReader(response), 512);

        try {

            char[] characters = new char[512];

            int len = pbr.read(characters, 0, 512);

            StringWriter sw = new StringWriter();

            sw.write(characters, 0, len);

            String message = sw.toString();

            sw.close();

            pbr.unread(characters, 0, len);

            if (message.indexOf("<error>") != -1) {

                if (message.indexOf("does not have permission") != -1) {

                    throw new InsufficientKarmaException(message);

                } else {

                    throw new MetacatException(message);

                }

            }

        } catch (IOException ioe) {

            throw new MetacatException(

                    "MetacatClient: Error converting Reader to String." 

                    + ioe.getMessage());

        }

        return pbr;

/**

 *  '$RCSfile$'

 *  Copyright: 2000 Regents of the University of California and the

 *             National Center for Ecological Analysis and Synthesis

 *

 *   '$Author$'

 *     '$Date$'

 * '$Revision$'

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 */

package edu.ucsb.nceas.metacat.client;

/**

 * Exception thrown when an error occurs during a metacat operation.

 */

public class MetacatException extends Exception {

    /**

     * Create a new MetacatException.

     *

     * @param message The error or warning message.

     */

    public MetacatException(String message) {

        super(message);

    }

}

     * @throws MetacatInaccessibleException when the metacat server can not be

     *                                    reached or does not respond

     * @throws MetacatException when the metacat server generates another error

    public Reader read(String docid) throws InsufficientKarmaException,

        MetacatInaccessibleException, MetacatException;