/**
* Copyright (C) 2010-2017 Structr GmbH
*
* This file is part of Structr <http://structr.org>.
*
* Structr is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* Structr is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Structr. If not, see <http://www.gnu.org/licenses/>.
*/
package org.structr.common;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
//~--- classes ----------------------------------------------------------------
/**
* A ThreadLocal implementation that provides a reusable Matcher for better performance.
* The matcher obtained from the <code>get</code> method if this class must be initialized
* with the input string like this:
*
* <pre>
* Matcher matcher = threadLocalMatcher.get();
* matcher.reset(input);
* </pre>
*
*
*/
public class ThreadLocalMatcher extends ThreadLocal<Matcher> {
private Pattern pattern = null;
//~--- constructors ---------------------------------------------------
public ThreadLocalMatcher(String pattern) {
this.pattern = Pattern.compile(pattern, Pattern.DOTALL);
}
//~--- methods --------------------------------------------------------
@Override
protected Matcher initialValue() {
return pattern.matcher("");
}
}