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Add a databinding for Google Protocol Buffers

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git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@964881 13f79535-47bb-0310-9956-ffa450edef68
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rfeng 2010-07-16 17:49:35 +00:00
parent 1725e763b9
commit d1b031a8bf
11 changed files with 1860 additions and 0 deletions
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21
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/META-INF/MANIFEST.MF Normal file
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Manifest-Version: 1.0
SCA-Version: 1.1
Bundle-Name: Apache Tuscany SCA Data Binding for Google ProtocolBuffers
Bundle-Vendor: The Apache Software Foundation
Bundle-Version: 2.0.0
Bundle-ManifestVersion: 2
Bundle-License: http://www.apache.org/licenses/LICENSE-2.0.txt
Bundle-Description: Apache Tuscany SCA Data Binding for JSON
Import-Package: javax.xml.namespace,
javax.xml.stream,
org.apache.tuscany.sca.common.xml.stax;version="2.0.0",
org.apache.tuscany.sca.core;version="2.0.0",
org.apache.tuscany.sca.databinding;version="2.0.0",
org.apache.tuscany.sca.databinding.impl;version="2.0.0",
org.apache.tuscany.sca.interfacedef;version="2.0.0",
org.apache.tuscany.sca.interfacedef.impl;version="2.0.0";resolution:=optional,
org.apache.tuscany.sca.interfacedef.util;version="2.0.0",
org.oasisopen.sca.annotation;version="2.0.0"
Bundle-SymbolicName: org.apache.tuscany.sca.databinding.protobuf
Bundle-DocURL: http://www.apache.org/

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sca-java-2.x/trunk/contrib/modules/databinding-protobuf/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<!--
* 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.
-->
<project>
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.apache.tuscany.sca</groupId>
<artifactId>tuscany-modules</artifactId>
<version>2.0-SNAPSHOT</version>
<relativePath>../pom.xml</relativePath>
</parent>
<artifactId>tuscany-databinding-protobuf</artifactId>
<name>Apache Tuscany SCA Data Binding for Google ProtocolBuffers</name>
<dependencies>
<dependency>
<groupId>org.apache.tuscany.sca</groupId>
<artifactId>tuscany-core-spi</artifactId>
<version>2.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.tuscany.sca</groupId>
<artifactId>tuscany-common-xml</artifactId>
<version>2.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.apache.tuscany.sca</groupId>
<artifactId>tuscany-databinding</artifactId>
<version>2.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
</project>

65
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/main/java/org/apache/tuscany/sca/databinding/protobuf/InputStream2Protobuf.java Normal file
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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);
}
}
}

60
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/main/java/org/apache/tuscany/sca/databinding/protobuf/Protobuf2OutputStream.java Normal file
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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.IOException;
import java.io.OutputStream;
import org.apache.tuscany.sca.databinding.PushTransformer;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.TransformationException;
import com.google.protobuf.Message;
/**
*
*/
public class Protobuf2OutputStream implements PushTransformer<Message, OutputStream> {
@Override
public String getSourceDataBinding() {
return ProtobufDatabinding.NAME;
}
@Override
public String getTargetDataBinding() {
return "application/x-protobuf" + "#" + OutputStream.class.getName();
}
@Override
public int getWeight() {
return 10;
}
@Override
public void transform(Message source, OutputStream sink, TransformationContext context) {
try {
if (source != null) {
source.writeTo(sink);
}
} catch (IOException e) {
throw new TransformationException(e);
}
}
}

107
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/main/java/org/apache/tuscany/sca/databinding/protobuf/ProtobufDatabinding.java Normal file
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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 org.apache.tuscany.sca.databinding.DataBinding;
import org.apache.tuscany.sca.databinding.WrapperHandler;
import org.apache.tuscany.sca.databinding.XMLTypeHelper;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.Operation;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
import com.google.protobuf.Message;
/**
* Google ProtocolBuffers databinding
*/
public class ProtobufDatabinding implements DataBinding {
public static final String NAME = "ProtocolBuffers";
/**
*
*/
public ProtobufDatabinding() {
}
/* (non-Javadoc)
* @see org.apache.tuscany.sca.databinding.DataBinding#getName()
*/
@Override
public String getName() {
return NAME;
}
/* (non-Javadoc)
* @see org.apache.tuscany.sca.databinding.DataBinding#introspect(org.apache.tuscany.sca.interfacedef.DataType, org.apache.tuscany.sca.interfacedef.Operation)
*/
@Override
public boolean introspect(DataType dataType, Operation operation) {
if (Message.class.isAssignableFrom(dataType.getPhysical())) {
dataType.setDataBinding(NAME);
return true;
}
return false;
}
/* (non-Javadoc)
* @see org.apache.tuscany.sca.databinding.DataBinding#introspect(java.lang.Object, org.apache.tuscany.sca.interfacedef.Operation)
*/
@Override
public DataType introspect(Object value, Operation operation) {
if (value instanceof Message) {
DataType dt = new DataTypeImpl(value.getClass(), null);
dt.setDataBinding(NAME);
return dt;
} else {
return null;
}
}
/* (non-Javadoc)
* @see org.apache.tuscany.sca.databinding.DataBinding#getWrapperHandler()
*/
@Override
public WrapperHandler getWrapperHandler() {
return null;
}
/* (non-Javadoc)
* @see org.apache.tuscany.sca.databinding.DataBinding#copy(java.lang.Object, org.apache.tuscany.sca.interfacedef.DataType, org.apache.tuscany.sca.interfacedef.DataType, org.apache.tuscany.sca.interfacedef.Operation, org.apache.tuscany.sca.interfacedef.Operation)
*/
@Override
public Object copy(Object object,
DataType sourceDataType,
DataType targetDataType,
Operation sourceOperation,
Operation targetOperation) {
Message msg = (Message)object;
return ((Message.Builder)msg.toBuilder().clone()).build();
}
/* (non-Javadoc)
* @see org.apache.tuscany.sca.databinding.DataBinding#getXMLTypeHelper()
*/
@Override
public XMLTypeHelper getXMLTypeHelper() {
return null;
}
}

20
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.DataBinding Normal file
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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.
# implementation classes for the databindings
org.apache.tuscany.sca.databinding.protobuf.ProtobufDatabinding;name=ProtocolBuffers

20
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PullTransformer Normal file
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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.
# Implementation classes for the transformers
org.apache.tuscany.sca.databinding.protobuf.InputStream2Protobuf;source=application/x-protobuf#java.io.InputStream;target=ProtocolBuffers,weight=10,public=true

17
sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/main/resources/META-INF/services/org.apache.tuscany.sca.databinding.PushTransformer Normal file
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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.
org.apache.tuscany.sca.databinding.protobuf.Protobuf2OutputStream;source=ProtocolBuffers;target=application/x-protobuf#java.io.OutputStream,weight=10,public=true

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sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/test/java/com/example/tutorial/AddressBookProtos.java Normal file
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sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/test/java/org/apache/tuscany/sca/databinding/protobuf/ProtobufTransformationTestCase.java Normal file
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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.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import junit.framework.Assert;
import org.apache.tuscany.sca.databinding.TransformationContext;
import org.apache.tuscany.sca.databinding.impl.TransformationContextImpl;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
import org.junit.Test;
import com.example.tutorial.AddressBookProtos.AddressBook;
import com.example.tutorial.AddressBookProtos.Person;
/**
*
*/
public class ProtobufTransformationTestCase {
@Test
public void testTransform() throws Exception {
Protobuf2OutputStream t1 = new Protobuf2OutputStream();
TransformationContext context = new TransformationContextImpl();
DataType dt1 = new DataTypeImpl(AddressBook.class, null);
context.setSourceDataType(dt1);
AddressBook addressBook =
AddressBook.newBuilder()
.addPerson(Person.newBuilder().setId(1).setEmail("abc@example.com").setName("John Smith").build())
.build();
ByteArrayOutputStream bos = new ByteArrayOutputStream();
t1.transform(addressBook, bos, context);
InputStream2Protobuf t2 = new InputStream2Protobuf();
context.setSourceDataType(null);
context.setTargetDataType(dt1);
ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
AddressBook addressBook2 = (AddressBook)t2.transform(bis, context);
Assert.assertEquals(addressBook, addressBook2);
}
}

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sca-java-2.x/trunk/contrib/modules/databinding-protobuf/src/test/resources/addressbook.proto Normal file
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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.
//
// See README.txt for information and build instructions.
package tutorial;
option java_package = "com.example.tutorial";
option java_outer_classname = "AddressBookProtos";
message Person {
required string name = 1;
required int32 id = 2; // Unique ID number for this person.
optional string email = 3;
enum PhoneType {
MOBILE = 0;
HOME = 1;
WORK = 2;
}
message PhoneNumber {
required string number = 1;
optional PhoneType type = 2 [default = HOME];
}
repeated PhoneNumber phone = 4;
}
// Our address book file is just one of these.
message AddressBook {
repeated Person person = 1;
}