/*
* Copyright 2006-2008 Web Cohesion
*
* 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.codehaus.enunciate.template.freemarker;
import freemarker.ext.beans.BeansWrapper;
import freemarker.template.TemplateMethodModelEx;
import freemarker.template.TemplateModel;
import freemarker.template.TemplateModelException;
import net.sf.jelly.apt.freemarker.FreemarkerModel;
import org.codehaus.enunciate.apt.EnunciateFreemarkerModel;
import org.codehaus.enunciate.config.SchemaInfo;
import org.codehaus.enunciate.contract.jaxb.ImplicitSchemaElement;
import org.codehaus.enunciate.contract.jaxb.LocalElementDeclaration;
import org.codehaus.enunciate.contract.jaxb.RootElementDeclaration;
import java.util.List;
import java.util.Map;
/**
* A method used in templates to output the prefix for a given namespace.
*
* @author Ryan Heaton
*/
public class IsDefinedGloballyMethod implements TemplateMethodModelEx {
/**
* Returns the qname of the element that has the first parameter as the namespace, the second as the element.
*
* @param list The arguments.
* @return The qname.
*/
public Object exec(List list) throws TemplateModelException {
if (list.size() < 1) {
throw new TemplateModelException("The isDefinedGlobally method must have a local element declaration as a parameter.");
}
TemplateModel from = (TemplateModel) list.get(0);
Object unwrapped = BeansWrapper.getDefaultInstance().unwrap(from);
String namespace;
String name;
if (LocalElementDeclaration.class.isInstance(unwrapped)) {
LocalElementDeclaration decl = (LocalElementDeclaration) unwrapped;
namespace = decl.getNamespace();
name = decl.getName();
}
else if (ImplicitSchemaElement.class.isInstance(unwrapped)) {
ImplicitSchemaElement ise = (ImplicitSchemaElement) unwrapped;
namespace = ise.getTargetNamespace();
name = ise.getElementName();
}
else {
throw new TemplateModelException("The isDefinedGlobally method must have a local element declaration or an implicit schema element as a parameter.");
}
SchemaInfo schemaInfo = getModel().getNamespacesToSchemas().get(namespace);
if (schemaInfo != null) {
for (RootElementDeclaration rootElementDeclaration : schemaInfo.getGlobalElements()) {
if (rootElementDeclaration.getName().equals(name)) {
return true;
}
}
if (LocalElementDeclaration.class.isInstance(unwrapped)) {
//local element declarations have to check implicit schema elements, too.
for (ImplicitSchemaElement implicitSchemaElement : schemaInfo.getImplicitSchemaElements()) {
if (implicitSchemaElement.getElementName().equals(name)) {
return true;
}
}
}
}
return false;
}
/**
* Convenience method to lookup a namespace prefix given a namespace.
*
* @param namespace The namespace for which to lookup the prefix.
* @return The namespace prefix.
*/
protected String lookupPrefix(String namespace) {
return getNamespacesToPrefixes().get(namespace);
}
/**
* The namespace to prefix map.
*
* @return The namespace to prefix map.
*/
protected static Map<String, String> getNamespacesToPrefixes() {
return getModel().getNamespacesToPrefixes();
}
/**
* Get the current root model.
*
* @return The current root model.
*/
protected static EnunciateFreemarkerModel getModel() {
return ((EnunciateFreemarkerModel) FreemarkerModel.get());
}
}