net.sf.sail.webapp.dao.sds.impl.SdsOfferingGetCommandHttpRestImpl.java Source code

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Here is the source code for net.sf.sail.webapp.dao.sds.impl.SdsOfferingGetCommandHttpRestImpl.java

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/**
 * Copyright (c) 2007 Encore Research Group, University of Toronto
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
package net.sf.sail.webapp.dao.sds.impl;

import net.sf.sail.webapp.dao.sds.CurnitMapNotFoundException;
import net.sf.sail.webapp.dao.sds.SdsOfferingGetCommand;
import net.sf.sail.webapp.domain.sds.SdsCurnit;
import net.sf.sail.webapp.domain.sds.SdsJnlp;
import net.sf.sail.webapp.domain.sds.SdsOffering;
import net.sf.sail.webapp.domain.webservice.http.HttpGetRequest;

import org.apache.commons.httpclient.HttpStatus;
import org.jdom.Document;
import org.jdom.Element;

/**
 * Implementation of <code>SdsOfferingGetCommand</code> which gets a single
 * offering from the Sail Data Service (uses Http REST) based on offering id.
 * This class is thread-safe.
 * 
 * @author Laurel Williams
 * 
 * @version $Id: SdsOfferingGetCommandHttpRestImpl.java 1143 2007-09-17
 *          15:25:53Z laurel $
 * 
 */
public class SdsOfferingGetCommandHttpRestImpl extends AbstractHttpRestCommand implements SdsOfferingGetCommand {

    private static final ThreadLocal<SdsOffering> SDS_OFFERING = new ThreadLocal<SdsOffering>();

    public void setSdsOffering(SdsOffering sdsOffering) {
        SDS_OFFERING.set(sdsOffering);
    }

    private SdsOffering getSdsOffering() {
        return SDS_OFFERING.get();
    }

    private SdsCurnitMapGetter curnitMapGetter = new SdsCurnitMapGetter(this);

    // TODO LAW check on thread safety of these method

    /**
     * @see net.sf.sail.webapp.dao.sds.SdsCommand#execute()
     */
    @SuppressWarnings("unchecked")
    public SdsOffering execute(HttpGetRequest httpRequest) throws CurnitMapNotFoundException {
        // TODO LAW check on thread safety of these method
        final SdsOffering sdsOffering = this.getSdsOffering();
        SDS_OFFERING.set(null);
        Document doc = convertXmlInputStreamToXmlDocument(this.transport.get(httpRequest));
        if (doc == null) {
            return sdsOffering;
        }

        Element sdsOfferingElement = doc.getRootElement();
        sdsOffering.setName(sdsOfferingElement.getChild("name").getValue());
        sdsOffering.setSdsObjectId(new Long(sdsOfferingElement.getChild("id").getValue()));

        SdsCurnit sdsCurnit = new SdsCurnit();
        sdsCurnit.setSdsObjectId(new Long(sdsOfferingElement.getChild("curnit-id").getValue()));
        sdsOffering.setSdsCurnit(sdsCurnit);

        SdsJnlp sdsJnlp = new SdsJnlp();
        sdsJnlp.setSdsObjectId(new Long(sdsOfferingElement.getChild("jnlp-id").getValue()));
        sdsOffering.setSdsJnlp(sdsJnlp);

        curnitMapGetter.setSdsOfferingCurnitMap(sdsOffering);
        return sdsOffering;

    }

    /**
     * @see net.sf.sail.webapp.dao.sds.SdsCommand#generateRequest()
     */
    public HttpGetRequest generateRequest() {
        final SdsOffering sdsOffering = this.getSdsOffering();
        final String url = "/offering/" + sdsOffering.getSdsObjectId();
        return new HttpGetRequest(REQUEST_HEADERS_ACCEPT, EMPTY_STRING_MAP, url, HttpStatus.SC_OK);
    }

    /**
     * @see net.sf.sail.webapp.dao.sds.SdsOfferingGetCommand#getSdsCurnitMap(java.lang.Long)
     */
    public void getSdsCurnitMap(SdsOffering sdsOffering) throws CurnitMapNotFoundException {
        curnitMapGetter.setSdsOfferingCurnitMap(sdsOffering);
    }

}