Package org.apache.tiles.definition.util

Source Code of org.apache.tiles.definition.util.DefinitionsFactoryUtil

/*
* $Id: DefinitionsFactoryUtil.java 527536 2007-04-11 15:44:51Z apetrelli $
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/

package org.apache.tiles.definition.util;

import org.apache.tiles.TilesContainer;
import org.apache.tiles.access.TilesAccess;
import org.apache.tiles.definition.DefinitionsFactory;
import org.apache.tiles.definition.DefinitionsFactoryException;
import org.apache.tiles.definition.ReloadableDefinitionsFactory;
import org.apache.tiles.impl.BasicTilesContainer;

/**
* Various {@link DefinitionsFactory} utilities.
*
* @version $Rev: 527536 $ $Date: 2007-04-11 17:44:51 +0200 (mer, 11 apr 2007) $
*/
public final class DefinitionsFactoryUtil {

    /**
     * Private constructor to avoid instatiation.
     */
    private DefinitionsFactoryUtil() {
    }

    /**
     * Reloads the definitions factory content, if necessary.
     *
     * @param context The context object to use
     * @throws DefinitionsFactoryException If something goes wrong during
     * reload.
     */
    public static void reloadDefinitionsFactory(Object context)
            throws DefinitionsFactoryException {
        TilesContainer container = TilesAccess.getContainer(context);
        if (container instanceof BasicTilesContainer) {
            BasicTilesContainer basic = (BasicTilesContainer) container;
            DefinitionsFactory factory = basic.getDefinitionsFactory();
            if (factory instanceof ReloadableDefinitionsFactory) {
                ReloadableDefinitionsFactory rFactory = (ReloadableDefinitionsFactory) factory;
                if (rFactory.refreshRequired()) {
                    rFactory.refresh();
                }
            }
        }
    }
}
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