/*
* 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.progmodel.facets.properties.modify;
import java.lang.reflect.Method;
import org.apache.isis.core.commons.lang.NameUtils;
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.progmodel.facets.MethodFinderUtils;
import org.apache.isis.core.progmodel.facets.MethodPrefixBasedFacetFactoryAbstract;
import org.apache.isis.core.progmodel.facets.MethodPrefixConstants;
import org.apache.isis.core.progmodel.facets.members.disable.DisabledFacet;
import org.apache.isis.core.progmodel.facets.members.disable.staticmethod.DisabledFacetAlways;
import org.apache.isis.core.progmodel.facets.properties.derived.inferred.DerivedFacetInferred;
public class PropertySetAndClearFacetFactory extends MethodPrefixBasedFacetFactoryAbstract {
private static final String[] PREFIXES = { MethodPrefixConstants.SET_PREFIX, MethodPrefixConstants.CLEAR_PREFIX };
public PropertySetAndClearFacetFactory() {
super(FeatureType.PROPERTIES_ONLY, PREFIXES);
}
@Override
public void process(final ProcessMethodContext processMethodContext) {
final Method setMethod = attachPropertyModifyFacetIfSetterIsFound(processMethodContext);
final Method clearMethod = attachPropertyClearFacetIfClearMethodIsFound(processMethodContext);
attachPropertyClearFacetUsingSetterIfRequired(processMethodContext, setMethod, clearMethod);
}
/**
* Sets up the {@link PropertySetterFacetViaSetterMethod} to invoke the property's setter if available, but if none
* then marks the property as {@link DerivedFacet derived} and {@link DisabledFacet disabled} otherwise.
*/
private static Method attachPropertyModifyFacetIfSetterIsFound(final ProcessMethodContext processMethodContext) {
final Method getMethod = processMethodContext.getMethod();
final String capitalizedName = NameUtils.javaBaseName(getMethod.getName());
final Class<?> cls = processMethodContext.getCls();
final Class<?> returnType = getMethod.getReturnType();
final Class<?>[] paramTypes = new Class[] { returnType };
final Method setMethod =
MethodFinderUtils.findMethod(cls, MethodScope.OBJECT, MethodPrefixConstants.SET_PREFIX + capitalizedName,
void.class, paramTypes);
processMethodContext.removeMethod(setMethod);
final FacetHolder property = processMethodContext.getFacetHolder();
if (setMethod != null) {
FacetUtil.addFacet(new PropertySetterFacetViaSetterMethod(setMethod, property));
FacetUtil.addFacet(new PropertyInitializationFacetViaSetterMethod(setMethod, property));
} else {
FacetUtil.addFacet(new DerivedFacetInferred(property));
FacetUtil.addFacet(new DisabledFacetAlways(property));
}
return setMethod;
}
private Method attachPropertyClearFacetIfClearMethodIsFound(final ProcessMethodContext processMethodContext) {
final Class<?> cls = processMethodContext.getCls();
final Method getMethod = processMethodContext.getMethod();
final FacetHolder property = processMethodContext.getFacetHolder();
final String capitalizedName = NameUtils.javaBaseName(getMethod.getName());
final Method clearMethod =
MethodFinderUtils.findMethod(cls, MethodScope.OBJECT, MethodPrefixConstants.CLEAR_PREFIX + capitalizedName,
void.class, NO_PARAMETERS_TYPES);
if (clearMethod == null) {
return null;
}
processMethodContext.removeMethod(clearMethod);
FacetUtil.addFacet(new PropertyClearFacetViaClearMethod(clearMethod, property));
return clearMethod;
}
private static void attachPropertyClearFacetUsingSetterIfRequired(final ProcessMethodContext processMethodContext,
final Method setMethod, final Method clearMethod) {
if (clearMethod != null) {
return;
}
if (setMethod == null) {
return;
}
final FacetHolder property = processMethodContext.getFacetHolder();
FacetUtil.addFacet(new PropertyClearFacetViaSetterMethod(setMethod, property));
}
}