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/**
 * Copyright (c) 2012-2016, www.tinygroup.org ([email protected]).
 *
 *  Licensed under the GPL, Version 3.0 (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.gnu.org/licenses/gpl.html
 *
 *  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.tinygroup.database.fileresolver;

import com.thoughtworks.xstream.XStream;
import org.tinygroup.database.config.sequence.Sequences;
import org.tinygroup.database.sequence.SequenceProcessor;
import org.tinygroup.database.util.DataBaseUtil;
import org.tinygroup.fileresolver.impl.AbstractFileProcessor;
import org.tinygroup.logger.LogLevel;
import org.tinygroup.vfs.FileObject;
import org.tinygroup.xstream.XStreamFactory;

/**
 * 触发器文件处理
 *
 * @author renhui
 */
public class SequenceFileProcessor extends AbstractFileProcessor {

    private static final String TRIGGER_EXTFILENAME = ".sequence.xml";
    SequenceProcessor processor;

    public SequenceProcessor getProcessor() {
        return processor;
    }

    public void setProcessor(SequenceProcessor processor) {
        this.processor = processor;
    }

    public void process() {
        XStream stream = XStreamFactory
                .getXStream(DataBaseUtil.DATABASE_XSTREAM);
        for (FileObject fileObject : deleteList) {
            LOGGER.logMessage(LogLevel.INFO, "正在移除sequence文件[{0}]",
                    fileObject.getAbsolutePath());
            Sequences sequences = (Sequences) caches
                    .get(fileObject.getAbsolutePath());
            if (sequences != null) {
                processor.removeSequences(sequences);
                caches.remove(fileObject.getAbsolutePath());
            }
            LOGGER.logMessage(LogLevel.INFO, "移除sequence文件[{0}]结束",
                    fileObject.getAbsolutePath());
        }
        for (FileObject fileObject : changeList) {
            LOGGER.logMessage(LogLevel.INFO, "正在加载sequence文件[{0}]",
                    fileObject.getAbsolutePath());
            Sequences oldSequences = (Sequences) caches
                    .get(fileObject.getAbsolutePath());
            if (oldSequences != null) {
                processor.removeSequences(oldSequences);
            }
            Sequences sequences = (Sequences) stream
                    .fromXML(fileObject.getInputStream());
            processor.addSequences(sequences);
            caches.put(fileObject.getAbsolutePath(), sequences);
            LOGGER.logMessage(LogLevel.INFO, "加载sequence文件[{0}]结束",
                    fileObject.getAbsolutePath());
        }

    }

    @Override
    protected boolean checkMatch(FileObject fileObject) {
        return fileObject.getFileName().endsWith(TRIGGER_EXTFILENAME);
    }

}