/*
* 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.specloader;
import java.lang.reflect.Method;
import java.util.Map;
import com.google.common.collect.Maps;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.isis.core.metamodel.spec.InjectorMethodEvaluator;
public final class InjectorMethodEvaluatorDefault implements InjectorMethodEvaluator {
private final static Logger LOG = LoggerFactory.getLogger(InjectorMethodEvaluatorDefault.class);
private final Map<Method, Map<Class<?>, Boolean>> isInjectorMethod = Maps.newConcurrentMap();
public boolean isInjectorMethodFor(
final Method method,
final Class<?> serviceClass) {
// there's no need to synchronize this access.
// if there were a race condition, then at worst a result of the determineXxx method might be discard
// (but it would end up being calculated next time around)
Map<Class<?>, Boolean> classBooleanMap = isInjectorMethod.get(method);
if(classBooleanMap == null) {
classBooleanMap = Maps.newConcurrentMap();
isInjectorMethod.put(method, classBooleanMap);
}
Boolean result = classBooleanMap.get(serviceClass);
if(result == null) {
result = determineIsInjectorMethodFor(method, serviceClass);
classBooleanMap.put(serviceClass, result);
}
return result;
}
private static boolean determineIsInjectorMethodFor(
final Method method,
final Class<?> serviceClass) {
final String methodName = method.getName();
if (methodName.startsWith("set") || methodName.startsWith("inject")) {
final Class<?>[] parameterTypes = method.getParameterTypes();
if (parameterTypes.length == 1 && parameterTypes[0] != Object.class && parameterTypes[0].isAssignableFrom(serviceClass)) {
return true;
}
}
return false;
}
}