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Apache CXF Runtime Core for WSDL Based Technologies
/**
* 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.cxf.wsdl;
import java.lang.reflect.Method;
import java.util.Map;
import javax.xml.namespace.QName;
import org.apache.cxf.Bus;
import org.apache.cxf.common.spi.ClassGeneratorClassLoader;
import org.apache.cxf.common.util.ASMHelper;
import org.apache.cxf.common.util.OpcodesProxy;
import org.apache.cxf.common.util.StringUtils;
public class ExtensionClassGenerator extends ClassGeneratorClassLoader implements ExtensionClassCreator {
public ExtensionClassGenerator(Bus bus) {
super(bus);
}
//CHECKSTYLE:OFF - very complicated ASM code
public Class createExtensionClass(Class cls, QName qname, ClassLoader loader) {
String className = StringUtils.periodToSlashes(cls.getName());
ASMHelper helper = bus.getExtension(ASMHelper.class);
OpcodesProxy Opcodes = helper.getOpCodes();
Class extClass = findClass(className + "Extensibility", loader);
if (extClass != null) {
return extClass;
}
ASMHelper.ClassWriter cw = helper.createClassWriter();
ASMHelper.FieldVisitor fv;
ASMHelper.MethodVisitor mv;
ASMHelper.AnnotationVisitor av0;
cw.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER + Opcodes.ACC_SYNTHETIC,
className + "Extensibility", null,
className,
new String[] {"javax/wsdl/extensions/ExtensibilityElement"});
cw.visitSource(cls.getSimpleName() + "Extensibility.java", null);
fv = cw.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
"WSDL_REQUIRED", "Ljavax/xml/namespace/QName;", null, null);
fv.visitEnd();
fv = cw.visitField(0, "qn", "Ljavax/xml/namespace/QName;", null, null);
fv.visitEnd();
boolean hasAttributes = false;
try {
Method m = cls.getDeclaredMethod("getOtherAttributes");
if (m != null && m.getReturnType() == Map.class){
hasAttributes = true;
}
} catch (Throwable t) {
//ignore
}
if (hasAttributes) {
mv = cw.visitMethod(Opcodes.ACC_STATIC, "", "()V", null, null);
mv.visitCode();
ASMHelper.Label l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(64, l0);
mv.visitTypeInsn(Opcodes.NEW, "javax/xml/namespace/QName");
mv.visitInsn(Opcodes.DUP);
mv.visitLdcInsn("http://schemas.xmlsoap.org/wsdl/");
mv.visitLdcInsn("required");
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "javax/xml/namespace/QName", "",
"(Ljava/lang/String;Ljava/lang/String;)V", false);
mv.visitFieldInsn(Opcodes.PUTSTATIC, className + "Extensibility", "WSDL_REQUIRED",
"Ljavax/xml/namespace/QName;");
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
} else {
fv = cw.visitField(Opcodes.ACC_PRIVATE, "required", "Ljava/lang/Boolean;", null, null);
fv.visitEnd();
}
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "", "()V", null, null);
mv.visitCode();
ASMHelper.Label l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(33, l0);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, className, "", "()V", false);
ASMHelper.Label l1 = helper.createLabel();
mv.visitLabel(l1);
mv.visitLineNumber(31, l1);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitTypeInsn(Opcodes.NEW, "javax/xml/namespace/QName");
mv.visitInsn(Opcodes.DUP);
mv.visitLdcInsn(qname.getNamespaceURI());
mv.visitLdcInsn(qname.getLocalPart());
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "javax/xml/namespace/QName",
"", "(Ljava/lang/String;Ljava/lang/String;)V", false);
mv.visitFieldInsn(Opcodes.PUTFIELD, className + "Extensibility",
"qn", "Ljavax/xml/namespace/QName;");
ASMHelper.Label l2 = helper.createLabel();
mv.visitLabel(l2);
mv.visitLineNumber(34, l2);
mv.visitInsn(Opcodes.RETURN);
ASMHelper.Label l3 = helper.createLabel();
mv.visitLabel(l3);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l3, 0);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "setElementType", "(Ljavax/xml/namespace/QName;)V", null, null);
mv.visitCode();
l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(37, l0);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitFieldInsn(Opcodes.PUTFIELD, className + "Extensibility", "qn", "Ljavax/xml/namespace/QName;");
l1 = helper.createLabel();
mv.visitLabel(l1);
mv.visitLineNumber(38, l1);
mv.visitInsn(Opcodes.RETURN);
l2 = helper.createLabel();
mv.visitLabel(l2);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l2, 0);
mv.visitLocalVariable("elementType", "Ljavax/xml/namespace/QName;", null, l0, l2, 1);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getElementType", "()Ljavax/xml/namespace/QName;", null, null);
av0 = mv.visitAnnotation("Ljavax/xml/bind/annotation/XmlTransient;", true);
av0.visitEnd();
mv.visitCode();
l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(40, l0);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitFieldInsn(Opcodes.GETFIELD, className + "Extensibility", "qn", "Ljavax/xml/namespace/QName;");
mv.visitInsn(Opcodes.ARETURN);
l1 = helper.createLabel();
mv.visitLabel(l1);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l1, 0);
mv.visitMaxs(0, 0);
mv.visitEnd();
if (hasAttributes) {
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getRequired", "()Ljava/lang/Boolean;", null, null);
mv.visitCode();
l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(66, l0);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, className + "Extensibility", "getOtherAttributes",
"()Ljava/util/Map;", false);
mv.visitFieldInsn(Opcodes.GETSTATIC, className + "Extensibility", "WSDL_REQUIRED",
"Ljavax/xml/namespace/QName;");
mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "get",
"(Ljava/lang/Object;)Ljava/lang/Object;", true);
mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/String");
mv.visitVarInsn(Opcodes.ASTORE, 1);
l1 = helper.createLabel();
mv.visitLabel(l1);
mv.visitLineNumber(67, l1);
mv.visitVarInsn(Opcodes.ALOAD, 1);
l2 = helper.createLabel();
mv.visitJumpInsn(Opcodes.IFNONNULL, l2);
mv.visitInsn(Opcodes.ACONST_NULL);
l3 = helper.createLabel();
mv.visitJumpInsn(Opcodes.GOTO, l3);
mv.visitLabel(l2);
mv.visitFrame(Opcodes.F_APPEND, 1, new Object[] {"java/lang/String"}, 0, null);
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitMethodInsn(Opcodes.INVOKESTATIC, "java/lang/Boolean", "valueOf",
"(Ljava/lang/String;)Ljava/lang/Boolean;", false);
mv.visitLabel(l3);
mv.visitFrame(Opcodes.F_SAME1, 0, null, 1, new Object[] {"java/lang/Boolean"});
mv.visitInsn(Opcodes.ARETURN);
ASMHelper.Label l4 = helper.createLabel();
mv.visitLabel(l4);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l4, 0);
mv.visitLocalVariable("s", "Ljava/lang/String;", null, l1, l4, 1);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "setRequired", "(Ljava/lang/Boolean;)V", null, null);
mv.visitCode();
l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(76, l0);
mv.visitVarInsn(Opcodes.ALOAD, 1);
l1 = helper.createLabel();
mv.visitJumpInsn(Opcodes.IFNONNULL, l1);
l2 = helper.createLabel();
mv.visitLabel(l2);
mv.visitLineNumber(77, l2);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, className + "Extensibility", "getOtherAttributes",
"()Ljava/util/Map;", false);
mv.visitFieldInsn(Opcodes.GETSTATIC, className + "Extensibility", "WSDL_REQUIRED",
"Ljavax/xml/namespace/QName;");
mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "remove",
"(Ljava/lang/Object;)Ljava/lang/Object;", true);
mv.visitInsn(Opcodes.POP);
l3 = helper.createLabel();
mv.visitLabel(l3);
mv.visitLineNumber(78, l3);
l4 = helper.createLabel();
mv.visitJumpInsn(Opcodes.GOTO, l4);
mv.visitLabel(l1);
mv.visitLineNumber(79, l1);
mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, className + "Extensibility", "getOtherAttributes",
"()Ljava/util/Map;", false);
mv.visitFieldInsn(Opcodes.GETSTATIC, className + "Extensibility", "WSDL_REQUIRED",
"Ljavax/xml/namespace/QName;");
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Boolean", "toString", "()Ljava/lang/String;", false);
mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "put",
"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", true);
mv.visitInsn(Opcodes.POP);
mv.visitLabel(l4);
mv.visitLineNumber(81, l4);
mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
mv.visitInsn(Opcodes.RETURN);
ASMHelper.Label l5 = helper.createLabel();
mv.visitLabel(l5);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l5, 0);
mv.visitLocalVariable("b", "Ljava/lang/Boolean;", null, l0, l5, 1);
mv.visitMaxs(0, 0);
mv.visitEnd();
} else {
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getRequired", "()Ljava/lang/Boolean;", null, null);
mv.visitCode();
l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(68, l0);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitFieldInsn(Opcodes.GETFIELD, className + "Extensibility", "required", "Ljava/lang/Boolean;");
mv.visitInsn(Opcodes.ARETURN);
l1 = helper.createLabel();
mv.visitLabel(l1);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l1, 0);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "setRequired", "(Ljava/lang/Boolean;)V", null, null);
mv.visitCode();
l0 = helper.createLabel();
mv.visitLabel(l0);
mv.visitLineNumber(71, l0);
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitFieldInsn(Opcodes.PUTFIELD, className + "Extensibility", "required", "Ljava/lang/Boolean;");
l1 = helper.createLabel();
mv.visitLabel(l1);
mv.visitLineNumber(72, l1);
mv.visitInsn(Opcodes.RETURN);
l2 = helper.createLabel();
mv.visitLabel(l2);
mv.visitLocalVariable("this", "L" + className + "Extensibility;", null, l0, l2, 0);
mv.visitLocalVariable("b", "Ljava/lang/Boolean;", null, l0, l2, 1);
mv.visitMaxs(0, 0);
mv.visitEnd();
}
cw.visitEnd();
byte[] bytes = cw.toByteArray();
return loadClass(className + "Extensibility", loader, bytes);
}
}