net.sf.jasperreports.engine.query.JRClauseTokens Maven / Gradle / Ivy
/*
* ============================================================================
* GNU Lesser General Public License
* ============================================================================
*
* JasperReports - Free Java report-generating library.
* Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
* JasperSoft Corporation
* 303 Second Street, Suite 450 North
* San Francisco, CA 94107
* http://www.jaspersoft.com
*/
package net.sf.jasperreports.engine.query;
import net.sf.jasperreports.engine.JRQueryChunk;
/**
* Query clause chunk wrapper.
*
* @author Lucian Chirita ([email protected])
* @version $Id: JRClauseTokens.java 1683 2007-03-29 16:04:15Z lucianc $
* @see JRQueryChunk#getTokens()
* @see JRQueryChunk#TYPE_CLAUSE_TOKENS
*/
public class JRClauseTokens
{
private final String[] tokens;
/**
* Wraps an array of tokens.
*
* @param tokens the tokens
*/
public JRClauseTokens(final String[] tokens)
{
this.tokens = tokens;
}
/**
* Returns a token at a specified position.
*
* If the specified position is greater than the number of tokens or
* the token is empty, the method returns null
.
*
*
* @param position the position
* @return the token at the specified position
*/
public String getToken(int position)
{
String token;
if (tokens == null || tokens.length <= position)
{
token = null;
}
else
{
token = tokens[position];
}
if (token != null)
{
token = token.trim();
if (token.length() == 0)
{
token = null;
}
}
return token;
}
}