/*
* 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.EXPIRY;
import static com.github.benmanes.caffeine.cache.Specifications.TIMER_WHEEL;
import com.github.benmanes.caffeine.cache.Feature;
import com.squareup.javapoet.FieldSpec;
import com.squareup.javapoet.MethodSpec;
/**
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class AddExpireAfterAccess extends LocalCacheRule {
@Override
protected boolean applies() {
return context.generateFeatures.contains(Feature.EXPIRE_ACCESS);
}
@Override
protected void execute() {
variableExpiration();
fixedExpiration();
}
private void fixedExpiration() {
context.constructor.addStatement(
"this.expiresAfterAccessNanos = builder.getExpiresAfterAccessNanos()");
context.cache.addField(FieldSpec.builder(long.class, "expiresAfterAccessNanos",
privateVolatileModifiers).build());
context.cache.addMethod(MethodSpec.methodBuilder("expiresAfterAccess")
.addModifiers(protectedFinalModifiers)
.addStatement("return (timerWheel == null)")
.returns(boolean.class)
.build());
context.cache.addMethod(MethodSpec.methodBuilder("expiresAfterAccessNanos")
.addModifiers(protectedFinalModifiers)
.addStatement("return expiresAfterAccessNanos")
.returns(long.class)
.build());
context.cache.addMethod(MethodSpec.methodBuilder("setExpiresAfterAccessNanos")
.addStatement("this.expiresAfterAccessNanos = expiresAfterAccessNanos")
.addParameter(long.class, "expiresAfterAccessNanos")
.addModifiers(protectedFinalModifiers)
.build());
}
private void variableExpiration() {
context.cache.addMethod(MethodSpec.methodBuilder("expiresVariable")
.addModifiers(protectedFinalModifiers)
.addStatement("return (timerWheel != null)")
.returns(boolean.class)
.build());
context.constructor.addStatement("this.expiry = builder.getExpiry(isAsync)");
context.cache.addField(FieldSpec.builder(EXPIRY, "expiry", privateFinalModifiers).build());
context.cache.addMethod(MethodSpec.methodBuilder("expiry")
.addModifiers(protectedFinalModifiers)
.addStatement("return expiry")
.returns(EXPIRY)
.build());
context.constructor.addStatement(
"this.timerWheel = builder.expiresVariable() ? new $T(this) : null", TIMER_WHEEL);
context.cache.addField(FieldSpec.builder(TIMER_WHEEL,
"timerWheel", privateFinalModifiers).build());
context.cache.addMethod(MethodSpec.methodBuilder("timerWheel")
.addModifiers(protectedFinalModifiers)
.addStatement("return timerWheel")
.returns(TIMER_WHEEL)
.build());
}
}