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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. 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.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.entity;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.Serializable;
/**
* A streamed entity that obtains its content from a {@link Serializable}.
* The content obtained from the {@link Serializable} instance can
* optionally be buffered in a byte array in order to make the
* entity self-contained and repeatable.
*
* @since 4.0
*/
public class SerializableEntity extends AbstractHttpEntity {
private byte[] objSer;
private Serializable objRef;
/**
* Creates new instance of this class.
*
* @param ser input
* @param bufferize tells whether the content should be
* stored in an internal buffer
* @throws IOException in case of an I/O error
*/
public SerializableEntity(Serializable ser, boolean bufferize) throws IOException {
super();
if (ser == null) {
throw new IllegalArgumentException("Source object may not be null");
}
if (bufferize) {
createBytes(ser);
} else {
this.objRef = ser;
}
}
private void createBytes(Serializable ser) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream out = new ObjectOutputStream(baos);
out.writeObject(ser);
out.flush();
this.objSer = baos.toByteArray();
}
public InputStream getContent() throws IOException, IllegalStateException {
if (this.objSer == null) {
createBytes(this.objRef);
}
return new ByteArrayInputStream(this.objSer);
}
public long getContentLength() {
if (this.objSer == null) {
return -1;
} else {
return this.objSer.length;
}
}
public boolean isRepeatable() {
return true;
}
public boolean isStreaming() {
return this.objSer == null;
}
public void writeTo(OutputStream outstream) throws IOException {
if (outstream == null) {
throw new IllegalArgumentException("Output stream may not be null");
}
if (this.objSer == null) {
ObjectOutputStream out = new ObjectOutputStream(outstream);
out.writeObject(this.objRef);
out.flush();
} else {
outstream.write(this.objSer);
outstream.flush();
}
}
}
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