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/*
 * Fabric3
 * Copyright (c) 2009-2015 Metaform Systems
 *
 * Licensed 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.
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 */
package org.fabric3.binding.file.runtime.receiver;

import java.io.File;

/**
 * Implements the ability to set a modification checkpoint for detecting if a file has been changed.
 */
public class FileEntry {
    private File file;
    private long checkPoint = -1;

    public FileEntry(File file) {
        this.file = file;
    }

    public boolean isChanged() {
        long current = file.lastModified();
        if (checkPoint == -1) {
            checkPoint = current;
        }
        boolean val = checkPoint != current;
        checkPoint = current;
        return val;
    }

}