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Java example source code file (AbstractWrapperBeanGenerator.java)
This example Java source code file (AbstractWrapperBeanGenerator.java) is included in the alvinalexander.com
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The AbstractWrapperBeanGenerator.java Java example source code
/*
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.xml.internal.ws.model;
import com.sun.istack.internal.NotNull;
import com.sun.xml.internal.bind.v2.model.annotation.AnnotationReader;
import com.sun.xml.internal.bind.v2.model.nav.Navigator;
import com.sun.xml.internal.ws.spi.db.BindingHelper;
import com.sun.xml.internal.ws.util.StringUtils;
import javax.jws.WebParam;
import javax.jws.WebResult;
import javax.xml.bind.annotation.*;
import javax.xml.bind.annotation.adapters.XmlJavaTypeAdapter;
import javax.xml.ws.WebServiceException;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.*;
import java.util.logging.Logger;
/**
* Finds request/response wrapper and exception bean memebers.
*
* <p>
* It uses JAXB's {@link AnnotationReader}, {@link Navigator} so that
* tools can use this with annotation processing, and the runtime can use this with
* reflection.
*
* @author Jitendra Kotamraju
*/
public abstract class AbstractWrapperBeanGenerator<T,C,M,A extends Comparable> {
private static final Logger LOGGER = Logger.getLogger(AbstractWrapperBeanGenerator.class.getName());
private static final String RETURN = "return";
private static final String EMTPY_NAMESPACE_ID = "";
private static final Class[] jaxbAnns = new Class[] {
XmlAttachmentRef.class, XmlMimeType.class, XmlJavaTypeAdapter.class,
XmlList.class, XmlElement.class
};
private static final Set<String> skipProperties = new HashSet();
static{
skipProperties.add("getCause");
skipProperties.add("getLocalizedMessage");
skipProperties.add("getClass");
skipProperties.add("getStackTrace");
skipProperties.add("getSuppressed"); // JDK 7 adds this
}
private final AnnotationReader<T,C,?,M> annReader;
private final Navigator<T,C,?,M> nav;
private final BeanMemberFactory<T,A> factory;
protected AbstractWrapperBeanGenerator(AnnotationReader<T,C,?,M> annReader,
Navigator<T,C,?,M> nav, BeanMemberFactory factory) {
this.annReader = annReader;
this.nav = nav;
this.factory = factory;
}
public static interface BeanMemberFactory<T,A> {
A createWrapperBeanMember(T paramType, String paramName, List<Annotation> jaxbAnnotations);
}
// Collects the JAXB annotations on a method
private List<Annotation> collectJAXBAnnotations(M method) {
List<Annotation> jaxbAnnotation = new ArrayList();
for(Class jaxbClass : jaxbAnns) {
Annotation ann = annReader.getMethodAnnotation(jaxbClass, method, null);
if (ann != null) {
jaxbAnnotation.add(ann);
}
}
return jaxbAnnotation;
}
// Collects the JAXB annotations on a parameter
private List<Annotation> collectJAXBAnnotations(M method, int paramIndex) {
List<Annotation> jaxbAnnotation = new ArrayList();
for(Class jaxbClass : jaxbAnns) {
Annotation ann = annReader.getMethodParameterAnnotation(jaxbClass, method, paramIndex, null);
if (ann != null) {
jaxbAnnotation.add(ann);
}
}
return jaxbAnnotation;
}
protected abstract T getSafeType(T type);
/**
* Returns Holder's value type.
*
* @return null if it not a Holder, otherwise return Holder's value type
*/
protected abstract T getHolderValueType(T type);
protected abstract boolean isVoidType(T type);
/**
* Computes request bean members for a method. Collects all IN and INOUT
* parameters as request bean fields. In this process, if a parameter
* has any known JAXB annotations they are collected as well.
* Special processing for @XmlElement annotation is done.
*
* @param method SEI method for which request bean members are computed
* @return List of request bean members
*/
public List<A> collectRequestBeanMembers(M method) {
List<A> requestMembers = new ArrayList();
int paramIndex = -1;
for (T param : nav.getMethodParameters(method)) {
paramIndex++;
WebParam webParam = annReader.getMethodParameterAnnotation(WebParam.class, method, paramIndex, null);
if (webParam != null && (webParam.header() || webParam.mode().equals(WebParam.Mode.OUT))) {
continue;
}
T holderType = getHolderValueType(param);
// if (holderType != null && webParam != null && webParam.mode().equals(WebParam.Mode.IN)) {
// // Should we flag an error - holder cannot be IN part ??
// continue;
// }
T paramType = (holderType != null) ? holderType : getSafeType(param);
String paramName = (webParam != null && webParam.name().length() > 0)
? webParam.name() : "arg"+paramIndex;
String paramNamespace = (webParam != null && webParam.targetNamespace().length() > 0)
? webParam.targetNamespace() : EMTPY_NAMESPACE_ID;
// Collect JAXB annotations on a parameter
List<Annotation> jaxbAnnotation = collectJAXBAnnotations(method, paramIndex);
// If a parameter contains @XmlElement, process it.
processXmlElement(jaxbAnnotation, paramName, paramNamespace, paramType);
A member = factory.createWrapperBeanMember(paramType,
getPropertyName(paramName), jaxbAnnotation);
requestMembers.add(member);
}
return requestMembers;
}
/**
* Computes response bean members for a method. Collects all OUT and INOUT
* parameters as response bean fields. In this process, if a parameter
* has any known JAXB annotations they are collected as well.
* Special processing for @XmlElement annotation is done.
*
* @param method SEI method for which response bean members are computed
* @return List of response bean members
*/
public List<A> collectResponseBeanMembers(M method) {
List<A> responseMembers = new ArrayList();
// return that need to be part response wrapper bean
String responseElementName = RETURN;
String responseNamespace = EMTPY_NAMESPACE_ID;
boolean isResultHeader = false;
WebResult webResult = annReader.getMethodAnnotation(WebResult.class, method ,null);
if (webResult != null) {
if (webResult.name().length() > 0) {
responseElementName = webResult.name();
}
if (webResult.targetNamespace().length() > 0) {
responseNamespace = webResult.targetNamespace();
}
isResultHeader = webResult.header();
}
T returnType = getSafeType(nav.getReturnType(method));
if (!isVoidType(returnType) && !isResultHeader) {
List<Annotation> jaxbRespAnnotations = collectJAXBAnnotations(method);
processXmlElement(jaxbRespAnnotations, responseElementName, responseNamespace, returnType);
responseMembers.add(factory.createWrapperBeanMember(returnType, getPropertyName(responseElementName), jaxbRespAnnotations));
}
// Now parameters that need to be part response wrapper bean
int paramIndex = -1;
for (T param : nav.getMethodParameters(method)) {
paramIndex++;
T paramType = getHolderValueType(param);
WebParam webParam = annReader.getMethodParameterAnnotation(WebParam.class, method, paramIndex, null);
if (paramType == null || (webParam != null && webParam.header())) {
continue; // not a holder or a header - so don't add it
}
String paramName = (webParam != null && webParam.name().length() > 0)
? webParam.name() : "arg"+paramIndex;
String paramNamespace = (webParam != null && webParam.targetNamespace().length() > 0)
? webParam.targetNamespace() : EMTPY_NAMESPACE_ID;
List<Annotation> jaxbAnnotation = collectJAXBAnnotations(method, paramIndex);
processXmlElement(jaxbAnnotation, paramName, paramNamespace, paramType);
A member = factory.createWrapperBeanMember(paramType,
getPropertyName(paramName), jaxbAnnotation);
responseMembers.add(member);
}
return responseMembers;
}
private void processXmlElement(List<Annotation> jaxb, String elemName, String elemNS, T type) {
XmlElement elemAnn = null;
for (Annotation a : jaxb) {
if (a.annotationType() == XmlElement.class) {
elemAnn = (XmlElement) a;
jaxb.remove(a);
break;
}
}
String name = (elemAnn != null && !elemAnn.name().equals("##default"))
? elemAnn.name() : elemName;
String ns = (elemAnn != null && !elemAnn.namespace().equals("##default"))
? elemAnn.namespace() : elemNS;
boolean nillable = nav.isArray(type)
|| (elemAnn != null && elemAnn.nillable());
boolean required = elemAnn != null && elemAnn.required();
XmlElementHandler handler = new XmlElementHandler(name, ns, nillable, required);
XmlElement elem = (XmlElement) Proxy.newProxyInstance(this.getClass().getClassLoader(), new Class<?>[]{XmlElement.class}, handler);
jaxb.add(elem);
}
private static class XmlElementHandler implements InvocationHandler {
private String name;
private String namespace;
private boolean nillable;
private boolean required;
XmlElementHandler(String name, String namespace, boolean nillable,
boolean required) {
this.name = name;
this.namespace = namespace;
this.nillable = nillable;
this.required = required;
}
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
String methodName = method.getName();
if (methodName.equals("name")) {
return name;
} else if (methodName.equals("namespace")) {
return namespace;
} else if (methodName.equals("nillable")) {
return nillable;
} else if (methodName.equals("required")) {
return required;
} else {
throw new WebServiceException("Not handling "+methodName);
}
}
}
/**
* Computes and sorts exception bean members for a given exception as per
* the 3.7 section of the spec. It takes all getter properties in the
* exception and its superclasses(except getCause, getLocalizedMessage,
* getStackTrace, getClass). The returned collection is sorted based
* on the property names.
*
* <p>
* But if the exception has @XmlType its values are honored. Only the
* propOrder properties are considered. The returned collection is sorted
* as per the given propOrder.
*
* @param exception
* @return list of properties in the correct order for an exception bean
*/
public Collection<A> collectExceptionBeanMembers(C exception) {
return collectExceptionBeanMembers(exception, true);
}
/**
* Computes and sorts exception bean members for a given exception as per
* the 3.7 section of the spec. It takes all getter properties in the
* exception and its superclasses(except getCause, getLocalizedMessage,
* getStackTrace, getClass). The returned collection is sorted based
* on the property names.
*
* <p>
* But if the exception has @XmlType its values are honored. Only the
* propOrder properties are considered. The returned collection is sorted
* as per the given propOrder.
*
* @param exception
* @param decapitalize if true, all the property names are decapitalized
*
* @return list of properties in the correct order for an exception bean
*/
public Collection<A> collectExceptionBeanMembers(C exception, boolean decapitalize ) {
TreeMap<String, A> fields = new TreeMap();
getExceptionProperties(exception, fields, decapitalize);
// Consider only the @XmlType(propOrder) properties
XmlType xmlType = annReader.getClassAnnotation(XmlType.class, exception, null);
if (xmlType != null) {
String[] propOrder = xmlType.propOrder();
// If not the default order of properties, use that propOrder
if (propOrder.length > 0 && propOrder[0].length() != 0) {
List<A> list = new ArrayList();
for(String prop : propOrder) {
A a = fields.get(prop);
if (a != null) {
list.add(a);
} else {
throw new WebServiceException("Exception "+exception+
" has @XmlType and its propOrder contains unknown property "+prop);
}
}
return list;
}
}
return fields.values();
}
private void getExceptionProperties(C exception, TreeMap<String, A> fields, boolean decapitalize) {
C sc = nav.getSuperClass(exception);
if (sc != null) {
getExceptionProperties(sc, fields, decapitalize);
}
Collection<? extends M> methods = nav.getDeclaredMethods(exception);
for (M method : methods) {
// 2.1.x is doing the following: no final static, transient, non-public
// transient cannot used as modifier for method, so not doing it now
if (!nav.isPublicMethod(method)
|| (nav.isStaticMethod(method) && nav.isFinalMethod(method))) {
continue;
}
if (!nav.isPublicMethod(method)) {
continue;
}
String name = nav.getMethodName(method);
if (!(name.startsWith("get") || name.startsWith("is")) || skipProperties.contains(name) ||
name.equals("get") || name.equals("is")) {
// Don't bother with invalid propertyNames.
continue;
}
T returnType = getSafeType(nav.getReturnType(method));
if (nav.getMethodParameters(method).length == 0) {
String fieldName = name.startsWith("get") ? name.substring(3) : name.substring(2);
if (decapitalize) fieldName = StringUtils.decapitalize(fieldName);
fields.put(fieldName, factory.createWrapperBeanMember(returnType, fieldName, Collections.<Annotation>emptyList()));
}
}
}
/**
* Gets the property name by mangling using JAX-WS rules
* @param name to be mangled
* @return property name
*/
private static String getPropertyName(String name) {
String propertyName = BindingHelper.mangleNameToVariableName(name);
//We wont have to do this if JAXBRIContext.mangleNameToVariableName() takes
//care of mangling java identifiers
return getJavaReservedVarialbeName(propertyName);
}
//TODO MOVE Names.java to runtime (instead of doing the following)
/*
* See if its a java keyword name, if so then mangle the name
*/
private static @NotNull String getJavaReservedVarialbeName(@NotNull String name) {
String reservedName = reservedWords.get(name);
return reservedName == null ? name : reservedName;
}
private static final Map<String, String> reservedWords;
static {
reservedWords = new HashMap<String, String>();
reservedWords.put("abstract", "_abstract");
reservedWords.put("assert", "_assert");
reservedWords.put("boolean", "_boolean");
reservedWords.put("break", "_break");
reservedWords.put("byte", "_byte");
reservedWords.put("case", "_case");
reservedWords.put("catch", "_catch");
reservedWords.put("char", "_char");
reservedWords.put("class", "_class");
reservedWords.put("const", "_const");
reservedWords.put("continue", "_continue");
reservedWords.put("default", "_default");
reservedWords.put("do", "_do");
reservedWords.put("double", "_double");
reservedWords.put("else", "_else");
reservedWords.put("extends", "_extends");
reservedWords.put("false", "_false");
reservedWords.put("final", "_final");
reservedWords.put("finally", "_finally");
reservedWords.put("float", "_float");
reservedWords.put("for", "_for");
reservedWords.put("goto", "_goto");
reservedWords.put("if", "_if");
reservedWords.put("implements", "_implements");
reservedWords.put("import", "_import");
reservedWords.put("instanceof", "_instanceof");
reservedWords.put("int", "_int");
reservedWords.put("interface", "_interface");
reservedWords.put("long", "_long");
reservedWords.put("native", "_native");
reservedWords.put("new", "_new");
reservedWords.put("null", "_null");
reservedWords.put("package", "_package");
reservedWords.put("private", "_private");
reservedWords.put("protected", "_protected");
reservedWords.put("public", "_public");
reservedWords.put("return", "_return");
reservedWords.put("short", "_short");
reservedWords.put("static", "_static");
reservedWords.put("strictfp", "_strictfp");
reservedWords.put("super", "_super");
reservedWords.put("switch", "_switch");
reservedWords.put("synchronized", "_synchronized");
reservedWords.put("this", "_this");
reservedWords.put("throw", "_throw");
reservedWords.put("throws", "_throws");
reservedWords.put("transient", "_transient");
reservedWords.put("true", "_true");
reservedWords.put("try", "_try");
reservedWords.put("void", "_void");
reservedWords.put("volatile", "_volatile");
reservedWords.put("while", "_while");
reservedWords.put("enum", "_enum");
}
}
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