org.structr.common.ThreadLocalMatcher Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of structr-core Show documentation

Structr is an open source framework based on the popular Neo4j graph database.

The newest version!

/**
 * Copyright (C) 2010-2016 Structr GmbH
 *
 * This file is part of Structr .
 *
 * 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 .
 */
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 get method if this class must be initialized
 * with the input string like this:
 *
 *  * Matcher matcher = threadLocalMatcher.get();
 * matcher.reset(input);
 * 
 *
 *
 */
public class ThreadLocalMatcher extends ThreadLocal {

	private Pattern pattern = null;

	//~--- constructors ---------------------------------------------------

	public ThreadLocalMatcher(String pattern) {

		this.pattern = Pattern.compile(pattern, Pattern.DOTALL);

	}

	//~--- methods --------------------------------------------------------

	@Override
	protected Matcher initialValue() {

		return pattern.matcher("");

	}

}