/*
* Copyright 2015 Ben Manes. All Rights Reserved.
*
* 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 com.github.benmanes.caffeine.cache.local;
import static com.github.benmanes.caffeine.cache.Specifications.kRefQueueType;
import static com.github.benmanes.caffeine.cache.Specifications.vRefQueueType;
import com.github.benmanes.caffeine.cache.Feature;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.MethodSpec;
import com.squareup.javapoet.TypeName;
/**
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class AddKeyValueStrength extends LocalCacheRule {
@Override
protected boolean applies() {
return true;
}
@Override
protected void execute() {
addKeyStrength();
addValueStrength();
}
private void addKeyStrength() {
if (context.generateFeatures.contains(Feature.WEAK_KEYS)) {
addStrength("collectKeys", "keyReferenceQueue", kRefQueueType);
}
}
private void addValueStrength() {
if (context.generateFeatures.contains(Feature.INFIRM_VALUES)) {
addStrength("collectValues", "valueReferenceQueue", vRefQueueType);
}
}
/** Adds the reference strength methods for the key or value. */
private void addStrength(String collectName, String queueName, TypeName type) {
context.cache.addMethod(MethodSpec.methodBuilder(queueName)
.addModifiers(protectedFinalModifiers)
.returns(type)
.addStatement("return $N", queueName)
.build());
context.cache.addField(FieldSpec.builder(type, queueName, privateFinalModifiers)
.initializer("new $T()", type)
.build());
context.cache.addMethod(MethodSpec.methodBuilder(collectName)
.addModifiers(protectedFinalModifiers)
.addStatement("return true")
.returns(boolean.class)
.build());
}
}