/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program 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; version 2 of the License.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Aug 15, 2007
*/
package com.bigdata.sparse;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* Utility class validates column and schema name constraints.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class NameChecker {
/**
* The constraint on schema and column names.
*/
public final static Pattern pattern_name = Pattern.compile("[\\w._\\-/]+");
/**
* Assert that the string is valid as the name of a schema. Names must be
* alphanumeric and may also include any of {<code>.</code>,
* <code>_</code>, <code>-</code>, or <code>/</code>}.
*
* @param s
* The string.
*
* @throws IllegalArgumentException
* if the string is not valid as the name of a schema.
*/
static public void assertSchemaName(String s)
throws IllegalArgumentException {
if (s == null)
throw new IllegalArgumentException();
if (s.length() == 0)
throw new IllegalArgumentException();
if (s.indexOf('\0') != -1)
throw new IllegalArgumentException();
final Matcher m = pattern_name.matcher(s);
if(!m.matches()) throw new IllegalArgumentException();
}
/**
* Assert that the string is valid as the name of a column. Names must be
* alphanumeric and may also include any of {<code>.</code>,
* <code>_</code>, or <code>/</code>}.
*
* @param s
* The string.
*
* @throws IllegalArgumentException
* if the string is not valid as the name of a column.
*/
static public void assertColumnName(final String s)
throws IllegalArgumentException {
if (s == null)
throw new IllegalArgumentException();
if (s.length() == 0)
throw new IllegalArgumentException();
if (s.indexOf('\0') != -1)
throw new IllegalArgumentException();
final Matcher m = pattern_name.matcher(s);
if (!m.matches())
throw new IllegalArgumentException(s);
}
}