org.primefaces.util.SharedStringBuilder Maven / Gradle / Ivy
/*
* Copyright 2009-2014 PrimeTek.
*
* 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.primefaces.util;
import javax.faces.context.FacesContext;
public class SharedStringBuilder {
/**
* Get a shared {@link StringBuilder} instance.
* This is required as e.g. 100 e.g. {@link org.primefaces.expression.SearchExpressionFacade#resolveClientId} calls would create
* 300 {@link StringBuilder} instances!
*
* @param context The {@link FacesContext}
* @param key The key for the {@link FacesContext} attributes.
* @return The shared {@link StringBuilder} instance
*/
public static StringBuilder get(FacesContext context, String key) {
StringBuilder builder = (StringBuilder) context.getAttributes().get(key);
if (builder == null) {
builder = new StringBuilder();
context.getAttributes().put(key, builder);
}
else {
builder.setLength(0);
}
return builder;
}
/**
* Get a shared {@link StringBuilder} instance.
* This is required as e.g. 100 e.g. {@link org.primefaces.expression.SearchExpressionFacade#resolveClientId} calls would create
* 300 {@link StringBuilder} instances!
*
* @param key The key for the {@link FacesContext} attributes.
* @return The shared {@link StringBuilder} instance
*/
public static StringBuilder get(String key) {
return get(FacesContext.getCurrentInstance(), key);
}
}