/*
* 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.members.hidden.staticmethod;
import java.lang.reflect.Method;
import org.apache.isis.core.commons.lang.MethodExtensions;
import org.apache.isis.core.commons.lang.StringExtensions;
import org.apache.isis.core.metamodel.exceptions.MetaModelException;
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.facets.members.hidden.HiddenFacetAlwaysEverywhere;
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 HiddenFacetStaticMethodFactory extends MethodPrefixBasedFacetFactoryAbstract {
private static final String[] PREFIXES = { MethodPrefixConstants.HIDE_PREFIX };
/**
* Note that the {@link Facet}s registered are the generic ones from
* noa-architecture (where they exist)
*/
public HiddenFacetStaticMethodFactory() {
super(FeatureType.MEMBERS, OrphanValidation.VALIDATE, PREFIXES);
}
// ///////////////////////////////////////////////////////
// Actions
// ///////////////////////////////////////////////////////
@Override
public void process(final ProcessMethodContext processMethodContext) {
// alwaysHideXxx()
attachHiddenFacetIfAlwaysHideMethodIsFound(processMethodContext);
}
public static void attachHiddenFacetIfAlwaysHideMethodIsFound(final ProcessMethodContext processMethodContext) {
final Class<?> type = processMethodContext.getCls();
final Method method = processMethodContext.getMethod();
final String capitalizedName = StringExtensions.asJavaBaseNameStripAccessorPrefixIfRequired(method.getName());
final Method alwaysHideMethod = MethodFinderUtils.findMethod(type, MethodScope.CLASS, MethodPrefixConstants.ALWAYS_HIDE_PREFIX + capitalizedName, boolean.class, new Class[] {});
if (alwaysHideMethod == null) {
return;
}
processMethodContext.removeMethod(alwaysHideMethod);
final Boolean alwaysHideMethodReturnValue = invokeAlwaysHideMethod(alwaysHideMethod);
if (!alwaysHideMethodReturnValue.booleanValue()) {
return;
}
final FacetHolder facetedMethod = processMethodContext.getFacetHolder();
FacetUtil.addFacet(new HiddenFacetAlwaysEverywhere(facetedMethod));
}
private static Boolean invokeAlwaysHideMethod(final Method alwaysHideMethod) {
Boolean alwaysHideMethodReturnValue = null;
try {
alwaysHideMethodReturnValue = (Boolean) MethodExtensions.invokeStatic(alwaysHideMethod);
} catch (final ClassCastException ex) {
// ignore
}
if (alwaysHideMethodReturnValue == null) {
throw new MetaModelException("method " + alwaysHideMethod + "must return a boolean");
}
return alwaysHideMethodReturnValue;
}
}