/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.query.sql;
import java.lang.reflect.Field;
import java.util.HashSet;
import java.util.Set;
import org.teiid.language.SQLConstants;
/**
* Special variable names in stored procedure language.
*/
public class ProcedureReservedWords {
public static final String ROWCOUNT = "ROWCOUNT"; //$NON-NLS-1$
public static final String CHANGING = "CHANGING"; //$NON-NLS-1$
public static final String VARIABLES = "VARIABLES"; //$NON-NLS-1$
public static final String DVARS = "DVARS"; //$NON-NLS-1$
/**
* Set of CAPITALIZED reserved words for checking whether a string is a reserved word.
*/
private static final Set<String> RESERVED_WORDS = new HashSet<String>();
// Initialize RESERVED_WORDS set - This is a poor man's enum. To much legacy code expects the constants to be Strings.
static {
Field[] fields = SQLConstants.class.getDeclaredFields();
for (Field field : fields) {
if (field.getType() == String.class) {
try {
RESERVED_WORDS.add((String)field.get(null));
} catch (Exception e) {
}
}
}
}
/** Can't construct */
private ProcedureReservedWords() {}
/**
* Check whether a string is a procedure reserved word.
* @param str String to check
* @return True if procedure reserved word, false if not or null
*/
public static final boolean isProcedureReservedWord(String str) {
if (str == null) {
return false;
}
return RESERVED_WORDS.contains(str.toUpperCase());
}
}