1 files changed, 98 insertions, 0 deletions
diff --git a/sdo-java/trunk/impl/src/main/java/org/apache/tuscany/sdo/codegen/BytecodeInterfaceGenerator.java b/sdo-java/trunk/impl/src/main/java/org/apache/tuscany/sdo/codegen/BytecodeInterfaceGenerator.java
new file mode 100644
index 0000000000..3fe2cd952e
--- /dev/null
+++ b/sdo-java/trunk/impl/src/main/java/org/apache/tuscany/sdo/codegen/BytecodeInterfaceGenerator.java
@@ -0,0 +1,98 @@
+/**
+ *
+ *  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.sdo.codegen;
+
+import java.util.List;
+
+import commonj.sdo.Property;
+import commonj.sdo.Type;
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.Opcodes;
+
+import org.apache.tuscany.sdo.SDOTypeVisitor;
+
+/**
+ * Implementation of a generator that will directly emit bytecode for an interface that
+ * corresponds to the static properties of a SDO type.
+ *
+ * @version $Rev$ $Date$
+ */
+public class BytecodeInterfaceGenerator implements SDOTypeVisitor {
+    private final ClassWriter cw;
+
+    public BytecodeInterfaceGenerator() {
+        cw = new ClassWriter(false);
+    }
+
+    public void visitType(Type type) {
+        String name = type.getName();
+        int lastDot = name.lastIndexOf('.');
+        if (lastDot != -1) {
+            name = name.replace('.', '/');
+        } else {
+            name = Character.toUpperCase(name.charAt(0)) + name.substring(1);
+        }
+
+        List baseTypes = type.getBaseTypes();
+        String[] interfaces = new String[baseTypes.size()];
+        for (int i = 0; i < baseTypes.size(); i++) {
+            Type baseType = (Type) baseTypes.get(i);
+            interfaces[i] = baseType.getInstanceClass().getName().replace('.', '/');
+        }
+
+        cw.visit(Opcodes.V1_4,
+                 Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT + Opcodes.ACC_INTERFACE,
+                 name, null, "java/lang/Object", interfaces);
+    }
+
+    public void visitProperty(Property property) {
+        String name = property.getName();
+        String propertyName = Character.toUpperCase(name.charAt(0)) + name.substring(1);
+        Class javaType = property.getType().getInstanceClass();
+        String desc = org.objectweb.asm.Type.getDescriptor(javaType);
+
+        if (property.isMany()) {
+            cw.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT, "get" + propertyName, "()Ljava/util/List;", null, null).visitEnd();
+        } else {
+            if (boolean.class.equals(javaType)) {
+                cw.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT, "is" + propertyName, "()Z", null, null).visitEnd();
+            } else {
+                cw.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT, "get" + propertyName, "()" + desc, null, null).visitEnd();
+            }
+            if (!property.isReadOnly()) {
+                cw.visitMethod(Opcodes.ACC_PUBLIC + Opcodes.ACC_ABSTRACT, "set" + propertyName, '(' + desc + ")V", null, null).visitEnd();
+            }
+        }
+    }
+
+    public void visitEnd() {
+        cw.visitEnd();
+    }
+
+    /**
+     * Return the bytecode for the interface class in a form that can be written
+     * to disk, added to a JAR file, or passed to a ClassLoader.
+     *
+     * @return the bytecode for the SDO Type's interface class
+     */
+    public byte[] getClassData() {
+        return cw.toByteArray();
+    }
+}