com.google.gwt.i18n.rebind.LocaleInfoContext Maven / Gradle / Ivy
/*
* Copyright 2010 Google Inc.
*
* 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.google.gwt.i18n.rebind;
import com.google.gwt.core.ext.ConfigurationProperty;
import com.google.gwt.core.ext.SelectionProperty;
import java.util.HashMap;
import java.util.Map;
/**
* A LocaleUtils specific context for caching.
*/
public class LocaleInfoContext {
/**
* A key for lookup of computed values in a cache.
*/
private static class CacheKey {
private final SelectionProperty localeProperty;
private final ConfigurationProperty runtimeLocaleProperty;
private ConfigurationProperty queryParamProperty;
private ConfigurationProperty cookieProperty;
/**
* Create a key for cache lookup.
*
* @param localeProperty "locale" property, must not be null
* @param runtimeLocaleProperty "runtime.locales" property, must not be null
* @param cookieProperty "locale.queryparam" property, must not be null
* @param queryParamProperty "locale.cookie" property, must not be null
*/
public CacheKey(SelectionProperty localeProperty,
ConfigurationProperty runtimeLocaleProperty,
ConfigurationProperty queryParamProperty,
ConfigurationProperty cookieProperty) {
this.localeProperty = localeProperty;
this.runtimeLocaleProperty = runtimeLocaleProperty;
this.queryParamProperty = queryParamProperty;
this.cookieProperty = cookieProperty;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
CacheKey other = (CacheKey) obj;
return localeProperty.equals(other.localeProperty)
&& runtimeLocaleProperty.equals(other.runtimeLocaleProperty)
&& queryParamProperty.equals(other.queryParamProperty)
&& cookieProperty.equals(other.cookieProperty);
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + localeProperty.hashCode();
result = prime * result + runtimeLocaleProperty.hashCode();
result = prime * result + queryParamProperty.hashCode();
result = prime * result + cookieProperty.hashCode();
return result;
}
}
private final Map localeUtilsCache = new HashMap<
CacheKey, LocaleUtils>();
public LocaleUtils getLocaleUtils(SelectionProperty localeProperty,
ConfigurationProperty runtimeLocaleProperty,
ConfigurationProperty queryParamProp, ConfigurationProperty cookieProp) {
CacheKey key = new CacheKey(localeProperty, runtimeLocaleProperty,
queryParamProp, cookieProp);
return localeUtilsCache.get(key);
}
public void putLocaleUtils(SelectionProperty localeProperty,
ConfigurationProperty runtimeLocaleProperty, ConfigurationProperty queryParamProp,
ConfigurationProperty cookieProp, LocaleUtils localeUtils) {
CacheKey key = new CacheKey(localeProperty, runtimeLocaleProperty,
queryParamProp, cookieProp);
localeUtilsCache.put(key, localeUtils);
}
}