/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.persistence.query.sql;
/**
* INTERNAL: SQL condition: is null<p>
*
* A NULL condition tests for nulls.<p>
*/
public class SQLIsNull implements SQLExpressionIF {
protected SQLValueIF value;
public SQLIsNull(SQLValueIF value) {
this.value = value;
}
public int getType() {
return IS_NULL;
}
public SQLValueIF getValue() {
return value;
}
public void setValue(SQLValueIF value) {
this.value = value;
}
public String toString() {
return getValue() + " is null";
}
}