Package org.exist.xquery.functions.xmldb

Source Code of org.exist.xquery.functions.xmldb.XMLDBReindex

/*
* eXist Open Source Native XML Database
* Copyright (C) 2008-2010 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 program; if not, write to the Free Software Foundation
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*  $Id$
*/
package org.exist.xquery.functions.xmldb;

import org.apache.log4j.Logger;
import org.exist.dom.QName;
import org.exist.xmldb.IndexQueryService;
import org.exist.xquery.Cardinality;
import org.exist.xquery.FunctionSignature;
import org.exist.xquery.XPathException;
import org.exist.xquery.XQueryContext;
import org.exist.xquery.value.BooleanValue;
import org.exist.xquery.value.FunctionParameterSequenceType;
import org.exist.xquery.value.FunctionReturnSequenceType;
import org.exist.xquery.value.Sequence;
import org.exist.xquery.value.SequenceType;
import org.exist.xquery.value.Type;
import org.xmldb.api.base.Collection;
import org.xmldb.api.base.XMLDBException;

/**
*  Reindex a collection in the database.
*
* @author dizzzz
* @author ljo
*
*/
public class XMLDBReindex extends XMLDBAbstractCollectionManipulator {
  protected static final Logger logger = Logger.getLogger(XMLDBReindex.class);
    public final static FunctionSignature signature = new FunctionSignature(
            new QName("reindex", XMLDBModule.NAMESPACE_URI,
                      XMLDBModule.PREFIX),
            "Reindex collection $collection-uri. " +
            XMLDBModule.COLLECTION_URI + " " +
            XMLDBModule.NEED_PRIV_USER,
            new SequenceType[]{
                new FunctionParameterSequenceType("collection-uri", Type.STRING, Cardinality.EXACTLY_ONE, "The collection URI")
    },
            new FunctionReturnSequenceType(Type.BOOLEAN, Cardinality.EXACTLY_ONE, "true() if successfully reindexed, false() otherwise"));

    /**
     * @param context
     */
    public XMLDBReindex(XQueryContext context) {
        super(context, signature, false);
    }

    public Sequence evalWithCollection(Collection collection, Sequence[] args, Sequence contextSequence)
        throws XPathException {
        // Check for DBA user
        if (!context.getSubject().hasDbaRole()) {
            logger.error("Permission denied, user '" + context.getSubject().getName() + "' must be a DBA to reindex the database");
            return BooleanValue.FALSE;
        }

        // Check if collection does exist
       
        if (collection == null) {
            logger.error("Collection " + args[0].getStringValue() + " does not exist.");
            return BooleanValue.FALSE;
        }

        // Reindex
        try {
            final IndexQueryService iqs = (IndexQueryService) collection.getService("IndexQueryService", "1.0");
            iqs.reindexCollection();
        } catch (final XMLDBException xe) {
            logger.error("Unable to reindex collection", xe);
            return BooleanValue.FALSE;
        }

        return BooleanValue.TRUE;
    }
}
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