com.mobicage.rogerthat.mfr.dal.Streamable.java Source code

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Here is the source code for com.mobicage.rogerthat.mfr.dal.Streamable.java

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/*
 * Copyright 2016 Mobicage NV
 *
 * 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.
 */
package com.mobicage.rogerthat.mfr.dal;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import org.apache.commons.codec.binary.Base64;

import com.mobicage.rogerthat.mfr.ApiServlet;

public class Streamable {
    static final Logger log = Logger.getLogger(ApiServlet.class.getName());

    protected static Object fromBase64(String base64String) {
        try {
            ByteArrayInputStream bis = new ByteArrayInputStream(Base64.decodeBase64(base64String));

            try {
                ZipInputStream zip = new ZipInputStream(bis);
                try {
                    zip.getNextEntry();
                    ObjectInput in = new ObjectInputStream(zip);
                    try {
                        return in.readObject();
                    } finally {
                        in.close();
                    }
                } finally {
                    zip.close();
                }
            } finally {
                bis.close();
            }
        } catch (ClassNotFoundException e) {
            log.log((Level.SEVERE), "ClassNotFoundException while deserializing member", e);
            return null;
        } catch (IOException e) {
            log.log((Level.SEVERE), "IOException while deserializing member", e);
            return null;
        }
    }

    public String toBase64() {
        try {
            ByteArrayOutputStream bos = new ByteArrayOutputStream();
            try {
                ZipOutputStream zip = new ZipOutputStream(bos);
                try {
                    zip.setLevel(9);
                    zip.putNextEntry(new ZipEntry("entry"));
                    try {
                        ObjectOutput out = new ObjectOutputStream(zip);
                        try {
                            out.writeObject(this);
                        } finally {
                            out.flush();
                        }
                    } finally {
                        zip.closeEntry();
                    }
                    zip.flush();
                    return Base64.encodeBase64URLSafeString(bos.toByteArray());
                } finally {
                    zip.close();
                }
            } finally {
                bos.close();
            }
        } catch (IOException e) {
            log.log((Level.SEVERE), "IO Error while serializing member", e);
            return null;
        }
    }

    public Streamable() {
        super();
    }

}