insert.java

联合国农粮署牵头开发的geonetwork源代码最新版

//=============================================================================
//===	Copyright (C) 2001-2007 Food and Agriculture Organization of the
//===	United Nations (FAO-UN), United Nations World Food Programme (WFP)
//===	and United Nations Environment Programme (UNEP)
//===
//===	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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//===
//===	Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//===	Rome - Italy. email: [e-mail]
//==============================================================================

package org.fao.geonet.services.metadata;

import java.util.UUID;
import jeeves.constants.Jeeves;
import jeeves.exceptions.MissingParameterEx;
import jeeves.interfaces.Service;
import jeeves.resources.dbms.Dbms;
import jeeves.server.ServiceConfig;
import jeeves.server.context.ServiceContext;
import jeeves.utils.Util;
import jeeves.utils.Xml;
import org.fao.geonet.GeonetContext;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.constants.Params;
import org.fao.geonet.kernel.DataManager;
import org.jdom.Element;
import org.jdom.Namespace;

//=============================================================================

/** Inserts a new metadata to the system (data is validated)
  */

public class Insert implements Service
{
	//--------------------------------------------------------------------------
	//---
	//--- Init
	//---
	//--------------------------------------------------------------------------

    private String stylePath;

	public void init(String appPath, ServiceConfig params) throws Exception
    {
        this.stylePath = appPath + Geonet.Path.IMPORT_STYLESHEETS;
    }

	//--------------------------------------------------------------------------
	//---
	//--- Service
	//---
	//--------------------------------------------------------------------------

	public Element exec(Element params, ServiceContext context) throws Exception
	{
		GeonetContext gc = (GeonetContext) context.getHandlerContext(Geonet.CONTEXT_NAME);

		DataManager dataMan = gc.getDataManager();

		String data       = Util.getParam(params, Params.DATA);
		String group      = Util.getParam(params, Params.GROUP);
		String schema     = Util.getParam(params, Params.SCHEMA);
		String isTemplate = Util.getParam(params, Params.TEMPLATE, "n");
		String title      = Util.getParam(params, Params.TITLE, "");
		String category   = Util.getParam(params, Params.CATEGORY);
		String style      = Util.getParam(params, Params.STYLESHEET);

		boolean validate = Util.getParam(params, Params.VALIDATE, "off").equals("on");

		 if (isTemplate.equals("s") && title.length() == 0)
			 throw new MissingParameterEx("title");

		//-----------------------------------------------------------------------
		//--- add the DTD to the input xml to perform validation

		Element xml = Xml.loadString(data, false);

        // Apply a stylesheet transformation if requested
        if (!style.equals("_none_"))
            xml = Xml.transform(xml, stylePath +"/"+ style);

		if (validate)
			dataMan.validate(schema, xml);

		//-----------------------------------------------------------------------
		//--- if the uuid does not exist and is not a template we generate it

		String uuid;
		if (isTemplate.equals("n"))
		{
			uuid = dataMan.extractUUID(schema, xml);
			if (uuid.length() == 0) uuid = UUID.randomUUID().toString();
		}
		else uuid = UUID.randomUUID().toString();

		//-----------------------------------------------------------------------
		//--- insert metadata into the system

		Dbms dbms = (Dbms) context.getResourceManager().open(Geonet.Res.MAIN_DB);

		String id = dataMan.insertMetadata(dbms, schema, group, xml,
													  context.getSerialFactory(), gc.getSiteId(),
													  uuid, isTemplate, title,
													  context.getUserSession().getUserIdAsInt());

        //--- Insert category if requested
        if (!"_none_".equals(category))
            dataMan.setCategory(dbms, id, category);

		Element response = new Element(Jeeves.Elem.RESPONSE);
		response.addContent(new Element(Params.ID).setText(id));

		return response;
	};

	//---------------------------------------------------------------------------

	private void fixNamespace(Element md, Namespace ns)
	{
		if (md.getNamespaceURI().equals(ns.getURI()))
			md.setNamespace(ns);

		for (Object o : md.getChildren())
			fixNamespace((Element) o, ns);
	}
}

//=============================================================================