/*
* 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.isis.core.metamodel.facets.param.choices.method;
import java.lang.reflect.Method;
import java.util.Collection;
import org.apache.isis.core.commons.lang.StringExtensions;
import org.apache.isis.core.metamodel.adapter.mgr.AdapterManager;
import org.apache.isis.core.metamodel.adapter.mgr.AdapterManagerAware;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facetapi.FacetUtil;
import org.apache.isis.core.metamodel.facetapi.FeatureType;
import org.apache.isis.core.metamodel.methodutils.MethodScope;
import org.apache.isis.core.metamodel.facets.MethodFinderUtils;
import org.apache.isis.core.metamodel.facets.MethodPrefixBasedFacetFactoryAbstract;
import org.apache.isis.core.metamodel.facets.MethodPrefixConstants;
public class ActionChoicesFacetViaMethodFactory extends MethodPrefixBasedFacetFactoryAbstract implements AdapterManagerAware {
private static final String[] PREFIXES = { MethodPrefixConstants.CHOICES_PREFIX };
private AdapterManager adapterManager;
/**
* Note that the {@link Facet}s registered are the generic ones from
* noa-architecture (where they exist)
*/
public ActionChoicesFacetViaMethodFactory() {
super(FeatureType.ACTIONS_ONLY, OrphanValidation.VALIDATE, PREFIXES);
}
// ///////////////////////////////////////////////////////
// Actions
// ///////////////////////////////////////////////////////
@Override
public void process(final ProcessMethodContext processMethodContext) {
attachActionChoicesFacetIfParameterChoicesMethodIsFound(processMethodContext);
}
private void attachActionChoicesFacetIfParameterChoicesMethodIsFound(final ProcessMethodContext processMethodContext) {
final Method actionMethod = processMethodContext.getMethod();
final Class<?>[] actionParamTypes = actionMethod.getParameterTypes();
if (actionParamTypes.length <= 0) {
return;
}
Method choicesMethod = null;
if (choicesMethod == null) {
choicesMethod = findChoicesMethodReturning(processMethodContext, Object[][].class);
}
if (choicesMethod == null) {
choicesMethod = findChoicesMethodReturning(processMethodContext, Object[].class);
}
if (choicesMethod == null) {
choicesMethod = findChoicesMethodReturning(processMethodContext, Collection.class);
}
if (choicesMethod == null) {
return;
}
processMethodContext.removeMethod(choicesMethod);
final Class<?> returnType = actionMethod.getReturnType();
final FacetHolder action = processMethodContext.getFacetHolder();
final ActionChoicesFacetViaMethod facet = new ActionChoicesFacetViaMethod(choicesMethod, returnType, action, getSpecificationLoader(), getAdapterManager());
FacetUtil.addFacet(facet);
}
protected Method findChoicesMethodReturning(final ProcessMethodContext processMethodContext, final Class<?> returnType2) {
Method choicesMethod;
final Class<?> cls = processMethodContext.getCls();
final Method actionMethod = processMethodContext.getMethod();
final MethodScope methodScope = MethodScope.scopeFor(actionMethod);
final String capitalizedName = StringExtensions.asCapitalizedName(actionMethod.getName());
final String name = MethodPrefixConstants.CHOICES_PREFIX + capitalizedName;
choicesMethod = MethodFinderUtils.findMethod(cls, methodScope, name, returnType2, new Class[0]);
return choicesMethod;
}
// ///////////////////////////////////////////////////////////////
// Dependencies
// ///////////////////////////////////////////////////////////////
@Override
public void setAdapterManager(final AdapterManager adapterMap) {
this.adapterManager = adapterMap;
}
protected AdapterManager getAdapterManager() {
return adapterManager;
}
}