/*
* Copyright (C) 2009 JavaRosa
*
* 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 org.openrosa.client.jr.core.services.transport.payload;
import java.io.IOException;
import org.openrosa.client.java.io.DataInputStream;
import org.openrosa.client.java.io.DataOutputStream;
import org.openrosa.client.jr.core.util.externalizable.DeserializationException;
import org.openrosa.client.jr.core.util.externalizable.ExtUtil;
import org.openrosa.client.jr.core.util.externalizable.PrototypeFactory;
/**
* A ByteArrayPayload is a simple payload consisting of a
* byte array.
*
* @author Clayton Sims
* @date Dec 18, 2008
*
*/
public class ByteArrayPayload implements IDataPayload {
byte[] payload;
String id;
int type;
/**
* Note: Only useful for serialization.
*/
public ByteArrayPayload() {
}
/**
*
* @param payload The byte array for this payload.
* @param id An optional id identifying the payload
* @param type The type of data for this byte array
*/
public ByteArrayPayload(byte[] payload, String id, int type) {
this.payload = payload;
this.id = id;
this.type = type;
}
/* (non-Javadoc)
* @see org.javarosa.core.util.externalizable.Externalizable#readExternal(java.io.DataInputStream, org.javarosa.core.util.externalizable.PrototypeFactory)
*/
public void readExternal(DataInputStream in, PrototypeFactory pf)
throws IOException, DeserializationException {
int length = in.readInt();
if(length > 0) {
this.payload = new byte[length];
in.read(this.payload);
}
id = ExtUtil.nullIfEmpty(ExtUtil.readString(in));
}
/* (non-Javadoc)
* @see org.javarosa.core.util.externalizable.Externalizable#writeExternal(java.io.DataOutputStream)
*/
public void writeExternal(DataOutputStream out) throws IOException {
out.writeInt(payload.length);
if(payload.length > 0) {
out.write(payload);
}
ExtUtil.writeString(out, ExtUtil.emptyIfNull(id));
}
/*
* (non-Javadoc)
* @see org.javarosa.core.services.transport.IDataPayload#accept(org.javarosa.core.services.transport.IDataPayloadVisitor)
*/
public Object accept(IDataPayloadVisitor visitor) {
return visitor.visit(this);
}
/*
* (non-Javadoc)
* @see org.javarosa.core.services.transport.IDataPayload#getPayloadId()
*/
public String getPayloadId() {
return id;
}
/*
* (non-Javadoc)
* @see org.javarosa.core.services.transport.IDataPayload#getPayloadType()
*/
public int getPayloadType() {
return type;
}
public long getLength() {
return payload.length;
}
public int getTransportId() {
//TODO: Most messages can include this data
return -1;
}
}