michael@0: /*
michael@0:  * ====================================================================
michael@0:  * Licensed to the Apache Software Foundation (ASF) under one
michael@0:  * or more contributor license agreements.  See the NOTICE file
michael@0:  * distributed with this work for additional information
michael@0:  * regarding copyright ownership.  The ASF licenses this file
michael@0:  * to you under the Apache License, Version 2.0 (the
michael@0:  * "License"); you may not use this file except in compliance
michael@0:  * with the License.  You may obtain a copy of the License at
michael@0:  *
michael@0:  *   http://www.apache.org/licenses/LICENSE-2.0
michael@0:  *
michael@0:  * Unless required by applicable law or agreed to in writing,
michael@0:  * software distributed under the License is distributed on an
michael@0:  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
michael@0:  * KIND, either express or implied.  See the License for the
michael@0:  * specific language governing permissions and limitations
michael@0:  * under the License.
michael@0:  * ====================================================================
michael@0:  *
michael@0:  * This software consists of voluntary contributions made by many
michael@0:  * individuals on behalf of the Apache Software Foundation.  For more
michael@0:  * information on the Apache Software Foundation, please see
michael@0:  * <http://www.apache.org/>.
michael@0:  *
michael@0:  */
michael@0: 
michael@0: package ch.boye.httpclientandroidlib.entity;
michael@0: 
michael@0: import java.io.ByteArrayInputStream;
michael@0: import java.io.ByteArrayOutputStream;
michael@0: import java.io.IOException;
michael@0: import java.io.InputStream;
michael@0: import java.io.ObjectOutputStream;
michael@0: import java.io.OutputStream;
michael@0: import java.io.Serializable;
michael@0: 
michael@0: /**
michael@0:  * A streamed entity that obtains its content from a {@link Serializable}.
michael@0:  * The content obtained from the {@link Serializable} instance can
michael@0:  * optionally be buffered in a byte array in order to make the
michael@0:  * entity self-contained and repeatable.
michael@0:  *
michael@0:  * @since 4.0
michael@0:  */
michael@0: public class SerializableEntity extends AbstractHttpEntity {
michael@0: 
michael@0:     private byte[] objSer;
michael@0: 
michael@0:     private Serializable objRef;
michael@0: 
michael@0:     /**
michael@0:      * Creates new instance of this class.
michael@0:      *
michael@0:      * @param ser input
michael@0:      * @param bufferize tells whether the content should be
michael@0:      *        stored in an internal buffer
michael@0:      * @throws IOException in case of an I/O error
michael@0:      */
michael@0:     public SerializableEntity(Serializable ser, boolean bufferize) throws IOException {
michael@0:         super();
michael@0:         if (ser == null) {
michael@0:             throw new IllegalArgumentException("Source object may not be null");
michael@0:         }
michael@0: 
michael@0:         if (bufferize) {
michael@0:             createBytes(ser);
michael@0:         } else {
michael@0:             this.objRef = ser;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     private void createBytes(Serializable ser) throws IOException {
michael@0:         ByteArrayOutputStream baos = new ByteArrayOutputStream();
michael@0:         ObjectOutputStream out = new ObjectOutputStream(baos);
michael@0:         out.writeObject(ser);
michael@0:         out.flush();
michael@0:         this.objSer = baos.toByteArray();
michael@0:     }
michael@0: 
michael@0:     public InputStream getContent() throws IOException, IllegalStateException {
michael@0:         if (this.objSer == null) {
michael@0:             createBytes(this.objRef);
michael@0:         }
michael@0:         return new ByteArrayInputStream(this.objSer);
michael@0:     }
michael@0: 
michael@0:     public long getContentLength() {
michael@0:         if (this.objSer ==  null) {
michael@0:             return -1;
michael@0:         } else {
michael@0:             return this.objSer.length;
michael@0:         }
michael@0:     }
michael@0: 
michael@0:     public boolean isRepeatable() {
michael@0:         return true;
michael@0:     }
michael@0: 
michael@0:     public boolean isStreaming() {
michael@0:         return this.objSer == null;
michael@0:     }
michael@0: 
michael@0:     public void writeTo(OutputStream outstream) throws IOException {
michael@0:         if (outstream == null) {
michael@0:             throw new IllegalArgumentException("Output stream may not be null");
michael@0:         }
michael@0: 
michael@0:         if (this.objSer == null) {
michael@0:             ObjectOutputStream out = new ObjectOutputStream(outstream);
michael@0:             out.writeObject(this.objRef);
michael@0:             out.flush();
michael@0:         } else {
michael@0:             outstream.write(this.objSer);
michael@0:             outstream.flush();
michael@0:         }
michael@0:     }
michael@0: 
michael@0: }