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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.
*/
package org.apache.tuscany.sca.databinding.protobuf;
import java.io.InputStream;
import java.lang.reflect.Method;
import org.apache.tuscany.sca.databinding.PullTransformer;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.TransformationException;
import com.google.protobuf.Message;
/**
*
*/
public class InputStream2Protobuf implements PullTransformer<InputStream, Message> {
@Override
public String getSourceDataBinding() {
return "application/x-protobuf" + "#" + InputStream.class.getName();
}
@Override
public String getTargetDataBinding() {
// TODO Auto-generated method stub
return ProtobufDatabinding.NAME;
}
@Override
public int getWeight() {
// TODO Auto-generated method stub
return 10;
}
@Override
public Message transform(InputStream source, TransformationContext context) {
try {
Class<?> type = context.getTargetDataType().getPhysical();
Method method = type.getMethod("parseFrom", InputStream.class);
Object result = method.invoke(null, source);
return (Message)result;
} catch (Throwable e) {
throw new TransformationException(e);
}
}
}
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