java: adds type-conversion mechanisms

java/src/main/java/org/msgpack/AbstractTemplate.java

@@ -0,0 +1,27 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack;
+
+import java.io.IOException;
+
+public abstract class AbstractTemplate implements Template {
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		return convert(pac.unpackObject());
+	}
+}
+

java/src/main/java/org/msgpack/MessageConverter.java

@@ -0,0 +1,25 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack;
+
+import java.io.IOException;
+
+public interface MessageConverter {
+	public Object convert(MessagePackObject obj) throws MessageTypeException;
+}
+

java/src/main/java/org/msgpack/MessagePackObject.java

@@ -132,5 +132,9 @@ public abstract class MessagePackObject implements Cloneable, MessagePackable {
 	}
 
 	abstract public Object clone();
+
+	public Object convert(Template tmpl) throws MessageTypeException {
+		return tmpl.convert(this);
+	}
 }
 

java/src/main/java/org/msgpack/MessagePacker.java

@@ -0,0 +1,25 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack;
+
+import java.io.IOException;
+
+public interface MessagePacker {
+	public void pack(Packer pk, Object target) throws IOException;
+}
+

java/src/main/java/org/msgpack/MessageUnpacker.java

@@ -0,0 +1,25 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack;
+
+import java.io.IOException;
+
+public interface MessageUnpacker {
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException;
+}
+

java/src/main/java/org/msgpack/Packer.java

@@ -474,6 +474,8 @@ public class Packer {
 		} else if(o instanceof BigInteger) {
 			return packBigInteger((BigInteger)o);
 		} else {
+			// FIXME check CustomPacker.get(o.getClass());
+			// FIXME check annotations
 			throw new MessageTypeException("unknown object "+o+" ("+o.getClass()+")");
 		}
 	}

java/src/main/java/org/msgpack/Template.java

@@ -0,0 +1,22 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack;
+
+public interface Template extends MessageUnpacker, MessageConverter {
+}
+

java/src/main/java/org/msgpack/Templates.java

@@ -0,0 +1,45 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack;
+
+import org.msgpack.template.*;
+
+public class Templates {
+	public static Template tList(Template elementTemplate) {
+		return new ListTemplate(elementTemplate);
+	}
+
+	public static Template tMap(Template keyTemplate, Template valueTemplate) {
+		return new MapTemplate(keyTemplate, valueTemplate);
+	}
+
+
+	public static final Template TString = StringTemplate.getInstance();
+
+	public static Template tString() {
+		return TString;
+	}
+
+
+	public static final Template TByteArray = ByteArrayTemplate.getInstance();
+
+	public static Template tByteArray() {
+		return TByteArray;
+	}
+}
+

java/src/main/java/org/msgpack/Unpacker.java

@@ -561,12 +561,23 @@ public class Unpacker implements Iterable<MessagePackObject> {
 		return impl.unpackObject();
 	}
 
+	final public boolean tryUnpackNull() throws IOException {
+		return impl.tryUnpackNull();
+	}
+
+	final public Object unpack(MessageUnpacker unpacker) throws IOException, MessageTypeException {
+		return unpacker.unpack(this);
+	}
+
 	final public void unpack(MessageUnpackable obj) throws IOException, MessageTypeException {
 		obj.messageUnpack(this);
 	}
 
-	final public boolean tryUnpackNull() throws IOException {
-		return impl.tryUnpackNull();
+	final public Object unpack(Class klass) throws MessageTypeException {
+		// FIXME check MessageUnpackable
+		// FIXME check CustomPacker
+		// FIXME check annotations
+		throw new MessageTypeException();
 	}
 }
 

java/src/main/java/org/msgpack/template/ByteArrayTemplate.java

@@ -0,0 +1,44 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack.template;
+
+import java.io.IOException;
+import org.msgpack.*;
+
+public class ByteArrayTemplate implements Template {
+	private ByteArrayTemplate() { }
+
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		return pac.unpackByteArray();
+	}
+
+	public Object convert(MessagePackObject from) throws MessageTypeException {
+		return from.asByteArray();
+	}
+
+	static public ByteArrayTemplate getInstance() {
+		return instance;
+	}
+
+	static final ByteArrayTemplate instance = new ByteArrayTemplate();
+
+	static {
+		CustomMessage.registerTemplate(byte[].class, instance);
+	}
+}
+

java/src/main/java/org/msgpack/template/ClassTemplate.java

@@ -0,0 +1,45 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack.template;
+
+import java.io.IOException;
+import org.msgpack.*;
+
+public class ClassTemplate implements Template {
+	private Class klass;
+
+	public ClassTemplate(Class klass) {
+		this.klass = klass;
+	}
+
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		return pac.unpack(klass);
+	}
+
+	public Object convert(MessagePackObject from) throws MessageTypeException {
+		MessageConverter converter = CustomConverter.get(klass);
+		if(converter != null) {
+			return converter.convert(from);
+		}
+
+		// FIXME check annotations
+
+		throw new MessageTypeException();
+	}
+}
+

java/src/main/java/org/msgpack/template/ListTemplate.java

@@ -0,0 +1,50 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack.template;
+
+import java.util.List;
+import java.util.ArrayList;
+import java.io.IOException;
+import org.msgpack.*;
+
+public class ListTemplate implements Template {
+	private Template elementTemplate;
+
+	public ListTemplate(Template elementTemplate) {
+		this.elementTemplate = elementTemplate;
+	}
+
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		int length = pac.unpackArray();
+		List<Object> list = new ArrayList<Object>(length);
+		for(; length > 0; length--) {
+			list.add( elementTemplate.unpack(pac) );
+		}
+		return list;
+	}
+
+	public Object convert(MessagePackObject from) throws MessageTypeException {
+		MessagePackObject[] array = from.asArray();
+		List<Object> list = new ArrayList<Object>(array.length);
+		for(MessagePackObject element : array) {
+			list.add( elementTemplate.convert(element) );
+		}
+		return list;
+	}
+}
+

java/src/main/java/org/msgpack/template/MapTemplate.java

@@ -0,0 +1,56 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack.template;
+
+import java.util.Map;
+import java.util.HashMap;
+import java.io.IOException;
+import org.msgpack.*;
+
+public class MapTemplate implements Template {
+	private Template keyTemplate;
+	private Template valueTemplate;
+
+	public MapTemplate(Template keyTemplate, Template valueTemplate) {
+		this.keyTemplate = keyTemplate;
+		this.valueTemplate = valueTemplate;
+	}
+
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		int length = pac.unpackMap();
+		Map<Object,Object> map = new HashMap<Object,Object>(length);
+		for(; length > 0; length--) {
+			Object key = keyTemplate.unpack(pac);
+			Object value = valueTemplate.unpack(pac);
+			map.put(key, value);
+		}
+		return map;
+	}
+
+	public Object convert(MessagePackObject from) throws MessageTypeException {
+		Map<MessagePackObject,MessagePackObject> src = from.asMap();
+		Map<Object,Object> map = new HashMap();
+		for(Map.Entry<MessagePackObject,MessagePackObject> pair : src.entrySet()) {
+			Object key = keyTemplate.convert(pair.getKey());
+			Object value = valueTemplate.convert(pair.getValue());
+			map.put(key, value);
+		}
+		return map;
+	}
+}
+

java/src/main/java/org/msgpack/template/StringTemplate.java

@@ -0,0 +1,44 @@
+//
+// MessagePack for Java
+//
+// Copyright (C) 2009-2010 FURUHASHI Sadayuki
+//
+//    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.msgpack.template;
+
+import java.io.IOException;
+import org.msgpack.*;
+
+public class StringTemplate implements Template {
+	private StringTemplate() { }
+
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		return pac.unpackString();
+	}
+
+	public Object convert(MessagePackObject from) throws MessageTypeException {
+		return from.asString();
+	}
+
+	static public StringTemplate getInstance() {
+		return instance;
+	}
+
+	static final StringTemplate instance = new StringTemplate();
+
+	static {
+		CustomMessage.registerTemplate(String.class, instance);
+	}
+}
+