/*
* 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.lang;
import junit.framework.TestCase;
import org.teiid.query.sql.symbol.Constant;
import org.teiid.query.sql.symbol.Reference;
/**
* @since 4.3
*/
public class TestLimit extends TestCase {
public void testGetOffset() {
Limit limit = new Limit(new Constant(new Integer(50)), new Constant(new Integer(100)));
assertEquals(new Constant(new Integer(50)), limit.getOffset());
assertEquals(new Constant(new Integer(50)), limit.getOffset()); // Idempotent
}
public void testGetRowLimit() {
Limit limit = new Limit(new Constant(new Integer(10)), new Constant(new Integer(30)));
assertEquals(new Constant(new Integer(30)), limit.getRowLimit());
assertEquals(new Constant(new Integer(30)), limit.getRowLimit());
}
public void testEquals() {
Limit limit1 = new Limit(new Constant(new Integer(100)), new Constant(new Integer(50)));
Limit limit2 = new Limit(new Constant(new Integer(100)), new Constant(new Integer(50)));
Limit limit3 = new Limit(new Constant(new Integer(99)), new Constant(new Integer(50)));
Limit limit4 = new Limit(new Constant(new Integer(100)), new Constant(new Integer(49)));
Limit limit5 = new Limit(null, new Constant(new Integer(50)));
Limit limit6 = new Limit(new Constant(new Integer(0)), new Constant(new Integer(50)));
Limit limit7 = new Limit(new Reference(0), new Constant(new Integer(50)));
Limit limit8 = new Limit(new Reference(0), new Reference(1));
Limit limit9 = new Limit(null, new Reference(1));
assertTrue(limit1.equals(limit2));
assertTrue(limit2.equals(limit1));
assertTrue(limit1.equals(limit1));
assertFalse(limit1.equals(null));
assertFalse(limit1.equals(limit3));
assertFalse(limit1.equals(limit4));
assertFalse(limit6.equals(limit7));
assertFalse(limit7.equals(limit6));
assertFalse(limit5.equals(limit7));
assertFalse(limit7.equals(limit5));
assertFalse(limit7.equals(limit8));
assertFalse(limit8.equals(limit9));
assertFalse(limit5.equals(limit9));
}
public void testHashcode() {
// Ensure that the hashcode for offset = null and offset = 0 are the same.
Limit limit1 = new Limit(null, new Constant(new Integer(50)));
Limit limit2 = new Limit(new Constant(new Integer(0)), new Constant(new Integer(50)));
assertEquals(limit1.hashCode(), limit2.hashCode());
}
public void testClone() {
Limit limit = new Limit(new Constant(new Integer(100)), new Constant(new Integer(50)));
Limit clone = (Limit)limit.clone();
assertTrue(limit != clone);
assertTrue(limit.equals(clone));
assertEquals(new Constant(new Integer(100)), clone.getOffset());
assertEquals(new Constant(new Integer(50)), clone.getRowLimit());
}
public void testToString() {
assertEquals("LIMIT 50", new Limit(null, new Constant(new Integer(50))).toString()); //$NON-NLS-1$
assertEquals("LIMIT 100, 50", new Limit(new Constant(new Integer(100)), new Constant(new Integer(50))).toString()); //$NON-NLS-1$
assertEquals("LIMIT ?, ?", new Limit(new Reference(0), new Reference(1)).toString()); //$NON-NLS-1$
assertEquals("LIMIT -1, ?", new Limit(new Constant(new Integer(-1)), new Reference(1)).toString()); //$NON-NLS-1$
}
}