/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  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.jackrabbit.command.core;

import javax.jcr.Item;
import javax.jcr.Session;

import org.apache.commons.chain.Command;
import org.apache.commons.chain.Context;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.jackrabbit.command.CommandHelper;

/**
 * Refresh the <code>Item</code> if specified or the <code>Session</code> to
 * reflect the current saved state.
 */
public class Refresh implements Command {
    /** logger */
    private static Log log = LogFactory.getLog(Refresh.class);

    // ---------------------------- < keys >
    /** keep changes key */
    private String keepChangesKey = "keepChanges";

    /** path to the node to refresh key */
    private String pathKey = "path";

    /**
     * @return the keep changes key
     */
    public String getKeepChangesKey() {
        return keepChangesKey;
    }

    /**
     * @param keepChangesKey
     *        the keep changes key to set
     */
    public void setKeepChangesKey(String keepChangesKey) {
        this.keepChangesKey = keepChangesKey;
    }

    /**
     * {@inheritDoc}
     */
    public boolean execute(Context ctx) throws Exception {
        boolean keepChanges = Boolean.valueOf(
            (String) ctx.get(this.keepChangesKey)).booleanValue();

        String path = (String) ctx.get(this.pathKey);

        if (log.isDebugEnabled()) {
            log.debug("refreshing. from node " + path);
        }

        if (path == null) {
            Session s = CommandHelper.getSession(ctx);
            s.refresh(keepChanges);
        } else {
            Item i = CommandHelper.getItem(ctx, path);
            i.refresh(keepChanges);
        }

        return false;
    }

    /**
     * @return the path key
     */
    public String getPathKey() {
        return pathKey;
    }

    /**
     * @param pathKey
     *        the path key to set
     */
    public void setPathKey(String pathKey) {
        this.pathKey = pathKey;
    }
}