/*
* =============================================================================
*
* Copyright (c) 2011-2014, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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 org.thymeleaf.standard.expression;
import org.thymeleaf.Configuration;
import org.thymeleaf.cache.ICache;
import org.thymeleaf.cache.ICacheManager;
/**
*
* @author Daniel Fernández
*
* @since 1.1
*
*/
final class ExpressionCache {
private static final String EXPRESSION_CACHE_PREFIX = "{expression}";
private static final String ASSIGNATION_SEQUENCE_CACHE_PREFIX = "{assignation_sequence}";
private static final String EXPRESSION_SEQUENCE_CACHE_PREFIX = "{expression_sequence}";
private static final String EACH_CACHE_PREFIX = "{each}";
private static final String FRAGMENT_SELECTION_CACHE_PREFIX = "{fragment_selection}";
private static final String FRAGMENT_SIGNATURE_CACHE_PREFIX = "{fragment_signature}";
private ExpressionCache() {
super();
}
private static Object getFromCache(final Configuration configuration, final String input, final String prefix) {
final ICacheManager cacheManager = configuration.getCacheManager();
if (cacheManager != null) {
final ICache<String,Object> cache = cacheManager.getExpressionCache();
if (cache != null) {
return cache.get(prefix + input);
}
}
return null;
}
private static <V> void putIntoCache(final Configuration configuration, final String input, final V value, final String prefix) {
final ICacheManager cacheManager = configuration.getCacheManager();
if (cacheManager != null) {
final ICache<String,Object> cache = cacheManager.getExpressionCache();
if (cache != null) {
cache.put(prefix + input, value);
}
}
}
static IStandardExpression getExpressionFromCache(final Configuration configuration, final String input) {
return (IStandardExpression) getFromCache(configuration, input, EXPRESSION_CACHE_PREFIX);
}
static void putExpressionIntoCache(final Configuration configuration, final String input, final IStandardExpression value) {
putIntoCache(configuration, input, value, EXPRESSION_CACHE_PREFIX);
}
static AssignationSequence getAssignationSequenceFromCache(final Configuration configuration, final String input) {
return (AssignationSequence) getFromCache(configuration, input, ASSIGNATION_SEQUENCE_CACHE_PREFIX);
}
static void putAssignationSequenceIntoCache(final Configuration configuration, final String input, final AssignationSequence value) {
putIntoCache(configuration, input, value, ASSIGNATION_SEQUENCE_CACHE_PREFIX);
}
static ExpressionSequence getExpressionSequenceFromCache(final Configuration configuration, final String input) {
return (ExpressionSequence) getFromCache(configuration, input, EXPRESSION_SEQUENCE_CACHE_PREFIX);
}
static void putExpressionSequenceIntoCache(final Configuration configuration, final String input, final ExpressionSequence value) {
putIntoCache(configuration, input, value, EXPRESSION_SEQUENCE_CACHE_PREFIX);
}
static Each getEachFromCache(final Configuration configuration, final String input) {
return (Each) getFromCache(configuration, input, EACH_CACHE_PREFIX);
}
static void putEachIntoCache(final Configuration configuration, final String input, final Each value) {
putIntoCache(configuration, input, value, EACH_CACHE_PREFIX);
}
static FragmentSelection getFragmentSelectionFromCache(final Configuration configuration, final String input) {
return (FragmentSelection) getFromCache(configuration, input, FRAGMENT_SELECTION_CACHE_PREFIX);
}
static void putFragmentSelectionIntoCache(final Configuration configuration, final String input, final FragmentSelection value) {
putIntoCache(configuration, input, value, FRAGMENT_SELECTION_CACHE_PREFIX);
}
static FragmentSignature getFragmentSignatureFromCache(final Configuration configuration, final String input) {
return (FragmentSignature) getFromCache(configuration, input, FRAGMENT_SIGNATURE_CACHE_PREFIX);
}
static void putFragmentSignatureIntoCache(final Configuration configuration, final String input, final FragmentSignature value) {
putIntoCache(configuration, input, value, FRAGMENT_SIGNATURE_CACHE_PREFIX);
}
}