/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* Licensed 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.jboss.solder.config.xml.model;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.enterprise.inject.spi.BeanManager;
import org.jboss.solder.config.xml.util.TypeOccuranceInformation;
import org.jboss.solder.config.xml.util.XmlConfigurationException;
public class MethodXmlItem extends AbstractXmlItem {
private String methodName;
Method method;
HashSet<TypeOccuranceInformation> allowed = new HashSet<TypeOccuranceInformation>();
public MethodXmlItem(XmlItem parent, String methodName, String document, int lineno) {
super(XmlItemType.METHOD, parent, parent.getJavaClass(), null, null, document, lineno);
allowed.add(TypeOccuranceInformation.of(XmlItemType.ANNOTATION, null, null));
allowed.add(TypeOccuranceInformation.of(XmlItemType.PARAMETERS, null, 1));
// methods are lazily resolved once we know the parameter types
this.methodName = methodName;
Method found = null;
for (Method m : javaClass.getMethods()) {
if (m.getName().equals(methodName)) {
if (found == null) {
found = m;
} else {
// we have to methods with the same name so resolution
// will have to wait
return;
}
}
}
method = found;
}
/**
* attempts to resolve a lazy method declaration. Returns true if it succeeds
* or is unessesary, false otherwise
*
* @param childeren
* @return
*/
public boolean resolveChildren(BeanManager manager) {
// return true if this is not a method or there was only
// only method to choose from
if (method != null) {
return true;
}
List<Class<?>> rtList = new ArrayList<Class<?>>();
List<ParametersXmlItem> parameters = getChildrenOfType(ParametersXmlItem.class);
if (parameters.size() > 1) {
throw new XmlConfigurationException("A method may only have a single <parameters> element", document, lineno);
} else if (!parameters.isEmpty()) {
for (ParameterXmlItem c : parameters.get(0).getChildrenOfType(ParameterXmlItem.class)) {
Class<?> cl = c.getJavaClass();
rtList.add(cl);
}
}
Class<?>[] alAr = new Class[rtList.size()];
for (int i = 0; i < rtList.size(); ++i) {
alAr[i] = rtList.get(i);
}
try {
method = javaClass.getMethod(methodName, alAr);
return true;
} catch (SecurityException e) {
throw new XmlConfigurationException("Security Exception resolving method " + methodName + " on class " + javaClass.getName(), getDocument(), getLineno());
} catch (NoSuchMethodException e) {
throw new XmlConfigurationException("NoSuchMethodException resolving method " + methodName + " on class " + javaClass.getName(), getDocument(), getLineno());
}
}
public Method getMethod() {
return method;
}
public Set<TypeOccuranceInformation> getAllowedItem() {
return allowed;
}
}