/**
* 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.endpoint.dynamic;
import java.lang.reflect.Array;
import java.util.Iterator;
import java.util.logging.Logger;
import javax.xml.namespace.QName;
import org.apache.cxf.common.classloader.ClassLoaderUtils;
import org.apache.cxf.common.i18n.Message;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.ASMHelper;
import org.apache.cxf.common.util.PrimitiveUtils;
import org.apache.cxf.jaxb.JAXBUtils.JType;
import org.apache.cxf.jaxb.JAXBUtils.Mapping;
import org.apache.cxf.jaxb.JAXBUtils.S2JJAXBModel;
import org.apache.cxf.jaxb.JAXBUtils.TypeAndAnnotation;
import org.apache.cxf.service.ServiceModelVisitor;
import org.apache.cxf.service.factory.ServiceConstructionException;
import org.apache.cxf.service.model.FaultInfo;
import org.apache.cxf.service.model.MessagePartInfo;
import org.apache.cxf.service.model.OperationInfo;
import org.apache.cxf.service.model.ServiceInfo;
import org.apache.cxf.service.model.UnwrappedOperationInfo;
import org.apache.ws.commons.schema.XmlSchemaElement;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.Label;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
public class TypeClassInitializer extends ServiceModelVisitor {
private static final Logger LOG = LogUtils.getL7dLogger(TypeClassInitializer.class);
S2JJAXBModel model;
boolean allowWrapperOperations;
boolean isFault;
public TypeClassInitializer(ServiceInfo serviceInfo,
S2JJAXBModel model,
boolean allowWr) {
super(serviceInfo);
this.model = model;
this.allowWrapperOperations = allowWr;
}
@Override
public void begin(MessagePartInfo part) {
OperationInfo op = part.getMessageInfo().getOperation();
if (!allowWrapperOperations && op.isUnwrappedCapable() && !op.isUnwrapped()) {
return;
}
QName name;
if (part.isElement()) {
name = part.getElementQName();
} else {
name = part.getTypeQName();
}
Mapping mapping = model.get(name);
//String clsName = null;
JType jType = null;
if (mapping != null) {
jType = mapping.getType().getTypeClass();
}
if (jType == null) {
TypeAndAnnotation typeAndAnnotation = model.getJavaType(part.getTypeQName());
if (typeAndAnnotation != null) {
jType = typeAndAnnotation.getTypeClass();
}
}
if (jType == null
&& part.isElement()
&& part.getXmlSchema() instanceof XmlSchemaElement
&& ((XmlSchemaElement)part.getXmlSchema()).getSchemaTypeName() == null) {
//anonymous inner thing.....
UnwrappedOperationInfo oInfo = (UnwrappedOperationInfo)op;
op = oInfo.getWrappedOperation();
if (part.getMessageInfo() == oInfo.getInput()) {
mapping = model.get(op.getInput().getMessagePart(0).getElementQName());
} else {
mapping = model.get(op.getOutput().getMessagePart(0).getElementQName());
}
if (mapping != null) {
jType = mapping.getType().getTypeClass();
try {
Iterator<JType> i = jType.classes();
while (i.hasNext()) {
JType jt = i.next();
if (jt.name().equalsIgnoreCase(part.getElementQName().getLocalPart())) {
jType = jt;
}
}
} catch (Throwable t) {
//ignore, JType is a type that doesn't have a classes method
}
}
}
if (jType == null) {
throw new ServiceConstructionException(new Message("NO_JAXB_CLASSMapping", LOG, name));
}
Class cls;
try {
int arrayCount = 0;
JType rootType = jType;
while (rootType.isArray()) {
rootType = rootType.elementType();
arrayCount++;
}
if (arrayCount == 0
&& part.isElement()
&& part.getXmlSchema() instanceof XmlSchemaElement
&& ((XmlSchemaElement)part.getXmlSchema()).getMaxOccurs() > 1) {
arrayCount = 1;
}
cls = getClassByName(rootType);
// bmargulies cannot find a way to ask the JVM to do this without creating
// an array object on the way.
if (arrayCount > 0) {
int[] dimensions = new int[arrayCount];
while (arrayCount > 0) {
arrayCount--;
dimensions[arrayCount] = 0;
}
Object emptyArray = Array.newInstance(cls, dimensions);
cls = emptyArray.getClass();
}
} catch (ClassNotFoundException e) {
throw new ServiceConstructionException(e);
}
part.setTypeClass(cls);
if (isFault) {
//need to create an Exception class for this
try {
part.getMessageInfo().setProperty(Class.class.getName(), createFaultClass(cls));
} catch (Throwable t) {
//ignore - probably no asm
}
}
super.begin(part);
}
private Class<?> createFaultClass(Class cls) {
return new ExceptionCreator().createExceptionClass(cls);
}
private Class getClassByName(JType jType) throws ClassNotFoundException {
Class cls;
if (!jType.isPrimitive()) {
cls = ClassLoaderUtils.loadClass(jType.binaryName(), getClass());
} else {
cls = PrimitiveUtils.getClass(jType.fullName());
}
return cls;
}
public void begin(FaultInfo fault) {
isFault = true;
}
public void end(FaultInfo fault) {
isFault = false;
}
private class ExceptionCreator extends ASMHelper {
public Class<?> createExceptionClass(Class<?> bean) {
String newClassName = bean.getName() + "_Exception";
newClassName = newClassName.replaceAll("\\$", ".");
newClassName = periodToSlashes(newClassName);
Class<?> cls = super.findClass(newClassName.replace('/', '.'), bean);
if (cls == null) {
ClassWriter cw = createClassWriter();
cw.visit(Opcodes.V1_5,
Opcodes.ACC_PUBLIC | Opcodes.ACC_SUPER,
newClassName,
null,
"java/lang/Exception",
null);
FieldVisitor fv;
MethodVisitor mv;
String beanClassCode = getClassCode(bean);
fv = cw.visitField(0, "faultInfo", beanClassCode, null, null);
fv.visitEnd();
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>",
"(Ljava/lang/String;" + beanClassCode + ")V", null, null);
mv.visitCode();
mv.visitLabel(new Label());
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Exception",
"<init>", "(Ljava/lang/String;)V");
mv.visitLabel(new Label());
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitVarInsn(Opcodes.ALOAD, 2);
mv.visitFieldInsn(Opcodes.PUTFIELD, newClassName, "faultInfo", beanClassCode);
mv.visitLabel(new Label());
mv.visitInsn(Opcodes.RETURN);
mv.visitLabel(new Label());
mv.visitMaxs(2, 3);
mv.visitEnd();
mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "getFaultInfo",
"()" + beanClassCode, null, null);
mv.visitCode();
mv.visitLabel(new Label());
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitFieldInsn(Opcodes.GETFIELD, newClassName, "faultInfo", beanClassCode);
mv.visitInsn(Opcodes.ARETURN);
mv.visitLabel(new Label());
mv.visitMaxs(1, 1);
mv.visitEnd();
cw.visitEnd();
return super.loadClass(bean.getName() + "_Exception", bean, cw.toByteArray());
}
return cls;
}
}
}