java: adds ReflectionPacker and ReflectionTemplate

5 files changed, 196 insertions, 1 deletions

diff --git a/java/src/main/java/org/msgpack/MessageConverter.java b/java/src/main/java/org/msgpack/MessageConverter.java
index 8388ddc..8ad60ae 100644
--- a/java/src/main/java/org/msgpack/MessageConverter.java
+++ b/java/src/main/java/org/msgpack/MessageConverter.java
@@ -20,6 +20,6 @@ package org.msgpack;
 import java.io.IOException;
 
 public interface MessageConverter {
-	public Object convert(MessagePackObject obj) throws MessageTypeException;
+	public Object convert(MessagePackObject from) throws MessageTypeException;
 }
 
diff --git a/java/src/main/java/org/msgpack/ReflectionBase.java b/java/src/main/java/org/msgpack/ReflectionBase.java
new file mode 100644
index 0000000..66ec12a
--- /dev/null
+++ b/java/src/main/java/org/msgpack/ReflectionBase.java
@@ -0,0 +1,26 @@
+//
+// 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;
+import java.lang.reflect.*;
+
+// FIXME mock-up
+abstract class ReflectionBase {
+}
+
diff --git a/java/src/main/java/org/msgpack/ReflectionPacker.java b/java/src/main/java/org/msgpack/ReflectionPacker.java
new file mode 100644
index 0000000..72406aa
--- /dev/null
+++ b/java/src/main/java/org/msgpack/ReflectionPacker.java
@@ -0,0 +1,49 @@
+//
+// 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;
+import java.lang.reflect.*;
+
+// FIXME mock-up
+public class ReflectionPacker extends ReflectionBase implements MessagePacker {
+	private Class<?> klass;
+
+	private ReflectionPacker(Class<?> klass) {
+		this.klass = klass;
+	}
+
+	static public ReflectionPacker create(Class klass) {
+		// FIXME code generation: generates subclass of ReflectionPacker
+		//       returned instance will be cached by Packer into CustomPacker
+		return new ReflectionPacker(klass);
+	}
+
+	public void pack(Packer pk, Object target) throws IOException {
+		Field[] fields = klass.getDeclaredFields();
+		pk.packArray(fields.length);
+		try {
+			for(int i=0; i < fields.length; i++) {
+				pk.pack(fields[i].get(target));
+			}
+		} catch(IllegalAccessException e) {
+			throw new MessageTypeException(e.getMessage());  // FIXME
+		}
+	}
+}
+
diff --git a/java/src/main/java/org/msgpack/ReflectionTemplate.java b/java/src/main/java/org/msgpack/ReflectionTemplate.java
new file mode 100644
index 0000000..5b49078
--- /dev/null
+++ b/java/src/main/java/org/msgpack/ReflectionTemplate.java
@@ -0,0 +1,74 @@
+//
+// 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;
+import java.lang.reflect.*;
+import org.msgpack.template.ClassTemplate;
+
+// FIXME mock-up
+public class ReflectionTemplate extends ReflectionBase implements Template {
+	private Class klass;
+
+	private ReflectionTemplate(Class klass) {
+		this.klass = klass;
+	}
+
+	static public ReflectionTemplate create(Class klass) {
+		// FIXME code generation: generates subclass of ReflectionPacker
+		//       returned instance will be cached by ClassTemplate into CustomUnpacker/CustomConverter
+		return new ReflectionTemplate(klass);
+	}
+
+	public Object unpack(Unpacker pac) throws IOException, MessageTypeException {
+		// FIXME optimize it
+		return convert(pac.unpackObject());
+	}
+
+	public Object convert(MessagePackObject from) throws MessageTypeException {
+		Object obj;
+		try {
+			obj = klass.newInstance();
+		} catch (IllegalAccessException e) {
+			throw new MessageTypeException(e.getMessage());  // FIXME
+		} catch (InstantiationException e) {
+			throw new MessageTypeException(e.getMessage());  // FIXME
+		}
+
+		// FIXME check Requred/Optional
+
+		Field[] fields = klass.getDeclaredFields();
+		MessagePackObject[] array = from.asArray();
+		if(fields.length < array.length) {
+			throw new MessageTypeException();
+		}
+
+		try {
+			for(int i=0; i < fields.length; i++) {
+				// FIXME generics getDeclaringClass
+				Object value = new ClassTemplate(fields[i].getType()).convert(array[i]);
+				fields[i].set(obj, value);
+			}
+		} catch(IllegalAccessException e) {
+			throw new MessageTypeException(e.getMessage());  // FIXME
+		}
+
+		return obj;
+	}
+}
+
diff --git a/java/src/test/java/org/msgpack/TestReflectionPackerTemplate.java b/java/src/test/java/org/msgpack/TestReflectionPackerTemplate.java
new file mode 100644
index 0000000..ddf88a0
--- /dev/null
+++ b/java/src/test/java/org/msgpack/TestReflectionPackerTemplate.java
@@ -0,0 +1,46 @@
+package org.msgpack;
+
+import static org.msgpack.Templates.*;
+
+import java.util.*;
+import java.io.*;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+public class TestReflectionPackerTemplate {
+
+	public static class StringFieldClass {
+		public String s1;
+		public String s2;
+		public StringFieldClass() { }
+	}
+
+	@Test
+	public void testPackConvert() throws Exception {
+		tString();
+
+		ByteArrayOutputStream out = new ByteArrayOutputStream();
+
+		MessagePacker packer = ReflectionPacker.create(StringFieldClass.class);
+
+		StringFieldClass src = new StringFieldClass();
+
+		src.s1 = "kumofs";
+		src.s2 = "frsyuki";
+
+		packer.pack(new Packer(out), src);
+
+		Template tmpl = ReflectionTemplate.create(StringFieldClass.class);
+
+		ByteArrayInputStream in = new ByteArrayInputStream(out.toByteArray());
+
+		Object obj = tmpl.unpack(new Unpacker(in));
+		assertEquals(obj.getClass(), StringFieldClass.class);
+
+		StringFieldClass dst = (StringFieldClass)obj;
+		assertEquals(src.s1, dst.s1);
+		assertEquals(src.s2, dst.s2);
+	}
+}
+