Android Object Serialization deserialize(final File file, final long serialTtl)

Description

deserialize

License

Apache License

Declaration

public static Map<String, Long> deserialize(final File file,
            final long serialTtl) 

Method Source Code

/**/*from www.  j ava  2s .  c o  m*/
 * Copyright 2010 ATG DUST Project
 * 
 * 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.
 */

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.nio.channels.FileChannel;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.log4j.Logger;
import atg.applauncher.core.util.JarUtils;

public class Main{
    private static Logger log = Logger.getLogger(FileUtil.class);
    public static Map<String, Long> deserialize(final File file,
            final long serialTtl) {

        if (file.exists()
                && file.lastModified() < System.currentTimeMillis()
                        - serialTtl) {
            if (log.isDebugEnabled()) {
                log.debug(String.format("Deleting previous serial %s "
                        + "because it's older then %s m/s", file.getPath(),
                        serialTtl));
            }
            file.delete();
        }

        Map<String, Long> o = null;
        try {
            if (file.exists()) {
                final ObjectInputStream in = new ObjectInputStream(
                        new FileInputStream(file));
                try {
                    o = (Map<String, Long>) in.readObject();
                } finally {
                    if (in != null) {
                        in.close();
                    }
                }
            }
        } catch (Exception e) {
            log.error("Error: ", e);
        }
        if (o == null) {
            o = new HashMap<String, Long>();
        }
        return o;
    }
}

Related

1. writeObjectToFile(File fileLocation, Object obj)
2. writeObjectToFile(Serializable obj, String filename)
3. objectToString(Object o)
4. stringToObject(String s)
5. getBytes(Serializable obj)
6. serialize(final File file, final Object o)
7. saveObject(Context context, String fileName, Object obj)
8. writeObjectToFile(Object obj, String filePath)
9. writeObjectToFile(Object obj, String filePath, boolean append)