/*
* eXist Open Source Native XML Database
* Copyright (C) 2010 The eXist Project
* http://exist-db.org
*
* This program 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
* 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 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*
* $Id$
*/
package org.exist.ant;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.PropertyHelper;
import org.xmldb.api.DatabaseManager;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.ResourceSet;
import org.xmldb.api.base.XMLDBException;
import org.xmldb.api.modules.XPathQueryService;
/**
* Ant task to execute an XQuery.
*
* <p>The query is either passed as nested text in the element, or via an attribute "query".</p>
*
* <p>Please note that the task doesn't output the query results.</p>
*
* @author wolf
*/
public class XMLDBQueryTask extends AbstractXMLDBTask
{
private String query = null;
private String text = null;
/* (non-Javadoc)
* @see org.apache.tools.ant.Task#execute()
*/
public void execute() throws BuildException
{
if( uri == null ) {
throw( new BuildException( "you have to specify an XMLDB collection URI" ) );
}
if( text != null ) {
final PropertyHelper helper = PropertyHelper.getPropertyHelper( getProject() );
query = helper.replaceProperties( null, text, null );
}
if( query == null ) {
throw( new BuildException( "you have to specify a query" ) );
}
log( "XQuery is:\n" + query, org.apache.tools.ant.Project.MSG_DEBUG );
registerDatabase();
try {
final Collection collection = DatabaseManager.getCollection( uri, user, password );
if( collection == null ) {
final String msg = "Collection " + uri + " could not be found.";
if( failonerror ) {
throw( new BuildException( msg ) );
} else {
log( msg, Project.MSG_ERR );
}
} else {
final XPathQueryService service = (XPathQueryService)collection.getService( "XPathQueryService", "1.0" );
final ResourceSet results = service.query( query );
log( "Found " + results.getSize() );
}
}
catch( final XMLDBException e ) {
final String msg = "XMLDB exception caught while executing query: " + e.getMessage();
if( failonerror ) {
throw( new BuildException( msg, e ) );
} else {
log( msg, e, Project.MSG_ERR );
}
}
}
/**
* DOCUMENT ME!
*
* @param query
*/
public void setQuery( String query )
{
this.query = query;
}
public void addText( String text )
{
this.text = text;
}
}