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org.apache.cxf.configuration.spring.AbstractBeanDefinitionParser Maven / Gradle / Ivy
/**
* 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.configuration.spring;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.logging.Logger;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBElement;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Unmarshaller;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import org.w3c.dom.Attr;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.apache.cxf.common.jaxb.JAXBContextCache;
import org.apache.cxf.common.jaxb.JAXBContextCache.CachedContextAndSchemas;
import org.apache.cxf.common.logging.LogUtils;
import org.apache.cxf.common.util.StringUtils;
import org.apache.cxf.helpers.DOMUtils;
import org.apache.cxf.staxutils.StaxUtils;
import org.springframework.beans.factory.BeanDefinitionStoreException;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanDefinitionHolder;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.BeanDefinitionParserDelegate;
import org.springframework.beans.factory.xml.ParserContext;
public abstract class AbstractBeanDefinitionParser
extends org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser {
public static final String WIRE_BUS_ATTRIBUTE = AbstractBeanDefinitionParser.class.getName() + ".wireBus";
public static final String WIRE_BUS_NAME = AbstractBeanDefinitionParser.class.getName() + ".wireBusName";
public static final String WIRE_BUS_CREATE
= AbstractBeanDefinitionParser.class.getName() + ".wireBusCreate";
public static final String WIRE_BUS_HANDLER
= "org.apache.cxf.bus.spring.BusWiringBeanFactoryPostProcessor";
private static final Logger LOG = LogUtils.getL7dLogger(AbstractBeanDefinitionParser.class);
private Class beanClass;
private JAXBContext context;
private Set> classes;
public AbstractBeanDefinitionParser() {
}
@Override
protected void doParse(Element element, ParserContext ctx, BeanDefinitionBuilder bean) {
boolean setBus = parseAttributes(element, ctx, bean);
if (!setBus && hasBusProperty()) {
addBusWiringAttribute(bean, BusWiringType.PROPERTY);
}
parseChildElements(element, ctx, bean);
}
protected boolean parseAttributes(Element element, ParserContext ctx, BeanDefinitionBuilder bean) {
NamedNodeMap atts = element.getAttributes();
boolean setBus = false;
for (int i = 0; i < atts.getLength(); i++) {
Attr node = (Attr) atts.item(i);
String val = node.getValue();
String pre = node.getPrefix();
String name = node.getLocalName();
String prefix = node.getPrefix();
// Don't process namespaces
if (isNamespace(name, prefix)) {
continue;
}
if ("createdFromAPI".equals(name)) {
bean.setAbstract(true);
} else if ("abstract".equals(name)) {
bean.setAbstract(true);
} else if ("depends-on".equals(name)) {
bean.addDependsOn(val);
} else if ("name".equals(name)) {
processNameAttribute(element, ctx, bean, val);
} else if ("bus".equals(name)) {
setBus = processBusAttribute(element, ctx, bean, val);
} else if (!"id".equals(name) && isAttribute(pre, name)) {
mapAttribute(bean, element, name, val);
}
}
return setBus;
}
protected boolean processBusAttribute(Element element, ParserContext ctx,
BeanDefinitionBuilder bean,
String val) {
if (val != null && val.trim().length() > 0) {
if (ctx.getRegistry().containsBeanDefinition(val)) {
bean.addPropertyReference("bus", val);
} else {
addBusWiringAttribute(bean, BusWiringType.PROPERTY,
val, ctx);
}
return true;
}
return false;
}
protected void processNameAttribute(Element element,
ParserContext ctx,
BeanDefinitionBuilder bean,
String val) {
//nothing
}
private boolean isNamespace(String name, String prefix) {
return "xmlns".equals(prefix) || prefix == null && "xmlns".equals(name);
}
protected void parseChildElements(Element element, ParserContext ctx, BeanDefinitionBuilder bean) {
Element el = DOMUtils.getFirstElement(element);
while (el != null) {
String name = el.getLocalName();
mapElement(ctx, bean, el, name);
el = DOMUtils.getNextElement(el);
}
}
public Class getBeanClass() {
return beanClass;
}
public void setBeanClass(Class beanClass) {
this.beanClass = beanClass;
}
@Override
protected Class getBeanClass(Element e) {
return beanClass;
}
protected void mapAttribute(BeanDefinitionBuilder bean, Element e, String name, String val) {
mapAttribute(bean, name, val);
}
protected void mapAttribute(BeanDefinitionBuilder bean, String name, String val) {
mapToProperty(bean, name, val);
}
protected void mapElement(ParserContext ctx, BeanDefinitionBuilder bean, Element e, String name) {
}
@Override
protected String resolveId(Element elem, AbstractBeanDefinition definition,
ParserContext ctx) throws BeanDefinitionStoreException {
// REVISIT: use getAttributeNS instead
String id = getIdOrName(elem);
String createdFromAPI = elem.getAttribute(BeanConstants.CREATED_FROM_API_ATTR);
if (null == id || "".equals(id)) {
return super.resolveId(elem, definition, ctx);
}
if (createdFromAPI != null && "true".equals(createdFromAPI.toLowerCase())) {
return id + getSuffix();
}
return id;
}
protected boolean hasBusProperty() {
return false;
}
protected String getSuffix() {
return "";
}
protected void setFirstChildAsProperty(Element element, ParserContext ctx,
BeanDefinitionBuilder bean, String propertyName) {
Element first = getFirstChild(element);
if (first == null) {
throw new IllegalStateException(propertyName + " property must have child elements!");
}
String id;
BeanDefinition child;
if (first.getNamespaceURI().equals(BeanDefinitionParserDelegate.BEANS_NAMESPACE_URI)) {
String name = first.getLocalName();
if ("ref".equals(name)) {
id = first.getAttribute("bean");
if (id == null) {
throw new IllegalStateException("[ elements must have a \"bean\" attribute!");
}
bean.addPropertyReference(propertyName, id);
return;
} else if ("bean".equals(name)) {
BeanDefinitionHolder bdh = ctx.getDelegate().parseBeanDefinitionElement(first);
child = bdh.getBeanDefinition();
bean.addPropertyValue(propertyName, child);
return;
} else {
throw new UnsupportedOperationException("Elements with the name " + name
+ " are not currently "
+ "supported as sub elements of "
+ element.getLocalName());
}
}
child = ctx.getDelegate().parseCustomElement(first, bean.getBeanDefinition());
bean.addPropertyValue(propertyName, child);
}
protected Element getFirstChild(Element element) {
return DOMUtils.getFirstElement(element);
}
protected void addBusWiringAttribute(BeanDefinitionBuilder bean,
BusWiringType type) {
addBusWiringAttribute(bean, type, null, null);
}
protected void addBusWiringAttribute(BeanDefinitionBuilder bean,
BusWiringType type,
String busName,
ParserContext ctx) {
LOG.fine("Adding " + WIRE_BUS_ATTRIBUTE + " attribute " + type + " to bean " + bean);
bean.getRawBeanDefinition().setAttribute(WIRE_BUS_ATTRIBUTE, type);
if (!StringUtils.isEmpty(busName)) {
if (busName.charAt(0) == '#') {
busName = busName.substring(1);
}
bean.getRawBeanDefinition().setAttribute(WIRE_BUS_NAME, busName);
}
if (ctx != null
&& !ctx.getRegistry().containsBeanDefinition(WIRE_BUS_HANDLER)) {
BeanDefinitionBuilder b
= BeanDefinitionBuilder.rootBeanDefinition(WIRE_BUS_HANDLER);
ctx.getRegistry().registerBeanDefinition(WIRE_BUS_HANDLER, b.getBeanDefinition());
}
}
protected void mapElementToJaxbProperty(Element parent,
BeanDefinitionBuilder bean,
QName name,
String propertyName) {
mapElementToJaxbProperty(parent, bean, name, propertyName, null);
}
protected void mapElementToJaxbProperty(Element parent,
BeanDefinitionBuilder bean,
QName name,
String propertyName,
Class c) {
Element data = null;
Node node = parent.getFirstChild();
while (node != null) {
if (node.getNodeType() == Node.ELEMENT_NODE && name.getLocalPart().equals(node.getLocalName())
&& name.getNamespaceURI().equals(node.getNamespaceURI())) {
data = (Element)node;
break;
}
node = node.getNextSibling();
}
if (data == null) {
return;
}
mapElementToJaxbProperty(data, bean, propertyName, c);
}
private synchronized JAXBContext getContext(Class cls) {
if (context == null || classes == null || !classes.contains(cls)) {
try {
Set]> tmp = new HashSet>();
if (classes != null) {
tmp.addAll(classes);
}
JAXBContextCache.addPackage(tmp, getJaxbPackage(),
cls == null
? getClass().getClassLoader()
: cls.getClassLoader());
if (cls != null) {
boolean hasOf = false;
for (Class c : tmp) {
if (c.getPackage() == cls.getPackage()
&& "ObjectFactory".equals(c.getSimpleName())) {
hasOf = true;
}
}
if (!hasOf) {
tmp.add(cls);
}
}
JAXBContextCache.scanPackages(tmp);
CachedContextAndSchemas ccs
= JAXBContextCache.getCachedContextAndSchemas(tmp, null, null, null, false);
classes = ccs.getClasses();
context = ccs.getContext();
} catch (JAXBException e) {
throw new RuntimeException(e);
}
}
return context;
}
@SuppressWarnings("deprecation")
protected void mapElementToJaxbProperty(Element data,
BeanDefinitionBuilder bean,
String propertyName,
Class c) {
try {
XMLStreamWriter xmlWriter = null;
try {
StringWriter writer = new StringWriter();
xmlWriter = StaxUtils.createXMLStreamWriter(writer);
StaxUtils.copy(data, xmlWriter);
xmlWriter.flush();
BeanDefinitionBuilder jaxbbean
= BeanDefinitionBuilder.rootBeanDefinition(JAXBBeanFactory.class);
jaxbbean.getRawBeanDefinition().setFactoryMethodName("createJAXBBean");
jaxbbean.addConstructorArg(getContext(c));
jaxbbean.addConstructorArg(writer.toString());
jaxbbean.addConstructorArg(c);
bean.addPropertyValue(propertyName, jaxbbean.getBeanDefinition());
} catch (Exception ex) {
Unmarshaller u = getContext(c).createUnmarshaller();
Object obj;
if (c != null) {
obj = u.unmarshal(data, c);
} else {
obj = u.unmarshal(data);
}
if (obj instanceof JAXBElement) {
JAXBElement el = (JAXBElement)obj;
obj = el.getValue();
}
if (obj != null) {
bean.addPropertyValue(propertyName, obj);
}
} finally {
StaxUtils.close(xmlWriter);
}
} catch (JAXBException e) {
throw new RuntimeException("Could not parse configuration.", e);
}
}
public void mapElementToJaxbPropertyFactory(Element data,
BeanDefinitionBuilder bean,
String propertyName,
Class type,
Class factory,
String method,
Object ... args) {
bean.addPropertyValue(propertyName, mapElementToJaxbBean(data,
factory,
null, type, method, args));
}
public AbstractBeanDefinition mapElementToJaxbBean(Element data,
Class cls,
Class factory,
String method,
Object ... args) {
return mapElementToJaxbBean(data, cls, factory, cls, method, args);
}
@SuppressWarnings("deprecation")
public AbstractBeanDefinition mapElementToJaxbBean(Element data,
Class cls,
Class factory,
Class jaxbClass,
String method,
Object ... args) {
StringWriter writer = new StringWriter();
XMLStreamWriter xmlWriter = StaxUtils.createXMLStreamWriter(writer);
try {
StaxUtils.copy(data, xmlWriter);
xmlWriter.flush();
} catch (XMLStreamException e) {
throw new RuntimeException(e);
} finally {
StaxUtils.close(xmlWriter);
}
BeanDefinitionBuilder jaxbbean
= BeanDefinitionBuilder.rootBeanDefinition(cls);
if (factory != null) {
jaxbbean.getRawBeanDefinition().setFactoryBeanName(factory.getName());
}
jaxbbean.getRawBeanDefinition().setFactoryMethodName(method);
jaxbbean.addConstructorArg(writer.toString());
jaxbbean.addConstructorArg(getContext(jaxbClass));
if (args != null) {
for (Object o : args) {
jaxbbean.addConstructorArg(o);
}
}
return jaxbbean.getBeanDefinition();
}
protected static T unmarshalFactoryString(String s, JAXBContext ctx, Class cls) {
StringReader reader = new StringReader(s);
XMLStreamReader data = StaxUtils.createXMLStreamReader(reader);
try {
Unmarshaller u = ctx.createUnmarshaller();
JAXBElement obj = u.unmarshal(data, cls);
return cls.cast(obj.getValue());
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
StaxUtils.close(data);
}
}
protected String getJaxbPackage() {
return "";
}
protected void mapToProperty(BeanDefinitionBuilder bean, String propertyName, String val) {
if (ID_ATTRIBUTE.equals(propertyName)) {
return;
}
if (!StringUtils.isEmpty(val)) {
if (val.startsWith("#") && !val.startsWith("#{")) {
bean.addPropertyReference(propertyName, val.substring(1));
} else {
bean.addPropertyValue(propertyName, val);
}
}
}
protected boolean isAttribute(String pre, String name) {
return !"xmlns".equals(name) && (pre == null || !pre.equals("xmlns"))
&& !"abstract".equals(name) && !"lazy-init".equals(name) && !"id".equals(name);
}
protected QName parseQName(Element element, String t) {
String ns = null;
String pre = null;
String local = null;
if (t.startsWith("{")) {
int i = t.indexOf('}');
if (i == -1) {
throw new RuntimeException("Namespace bracket '{' must having a closing bracket '}'.");
}
ns = t.substring(1, i);
t = t.substring(i + 1);
}
int colIdx = t.indexOf(':');
if (colIdx == -1) {
local = t;
pre = "";
ns = DOMUtils.getNamespace(element, "");
} else {
pre = t.substring(0, colIdx);
local = t.substring(colIdx + 1);
ns = DOMUtils.getNamespace(element, pre);
}
return new QName(ns, local, pre);
}
/* This id-or-name resolution logic follows that in Spring's
* org.springframework.beans.factory.xml.BeanDefinitionParserDelegate object
* Intent is to have resolution of CXF custom beans follow that of Spring beans
*/
protected String getIdOrName(Element elem) {
String id = elem.getAttribute(BeanDefinitionParserDelegate.ID_ATTRIBUTE);
if (null == id || "".equals(id)) {
String names = elem.getAttribute(BeanConstants.NAME_ATTR);
if (null != names) {
StringTokenizer st =
new StringTokenizer(names, BeanDefinitionParserDelegate.BEAN_NAME_DELIMITERS);
if (st.countTokens() > 0) {
id = st.nextToken();
}
}
}
return id;
}
}
