/*
* 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.optimizer;
import org.teiid.query.optimizer.TestOptimizer.ComparisonMode;
import org.teiid.query.processor.ProcessorPlan;
import org.teiid.query.unittest.FakeMetadataFactory;
import junit.framework.TestCase;
public class TestRuleRemoveSorts extends TestCase {
/** Tests an order by in a query transformation */
public void testRemovedOrderByFromQueryTransform() {
ProcessorPlan plan = TestOptimizer.helpPlan("SELECT e1, e2 FROM vm1.g14", FakeMetadataFactory.example1Cached(), //$NON-NLS-1$
new String[] { "SELECT pm3.g1.e1, pm3.g1.e2 FROM pm3.g1"}); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
/**
* Tests an order by in a query transformation, where the
* physical model does not support pushing order bys
*/
public void testRemovedOrderByFromQueryTransform2() {
ProcessorPlan plan = TestOptimizer.helpPlan("SELECT e, e2 FROM vm1.g8", FakeMetadataFactory.example1Cached(), //$NON-NLS-1$
new String[] { "SELECT e1, e2 FROM pm1.g1"}); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, new int[] {
1, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // NestedLoopJoinStrategy
0, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/**
* Tests an order by in a query transformation, where the
* query transformation contains a function
*/
public void testRemovedOrderByFromQueryTransform3() {
ProcessorPlan plan = TestOptimizer.helpPlan("SELECT e, e2 FROM vm1.g16", FakeMetadataFactory.example1Cached(), //$NON-NLS-1$
new String[] { "SELECT e1, e2 FROM pm3.g1"}); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, new int[] {
1, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // NestedLoopJoinStrategy
0, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/** Tests an order by in a query transformation */
public void testRemovedOrderByFromQueryTransform4() {
ProcessorPlan plan = TestOptimizer.helpPlan("SELECT e1, e2 FROM vm1.g13", FakeMetadataFactory.example1Cached(), //$NON-NLS-1$
new String[] { "SELECT DISTINCT pm3.g1.e1, pm3.g1.e2, pm3.g1.e3, pm3.g1.e4 FROM pm3.g1"}); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, new int[] {
1, // Access
0, // DependentAccess
0, // DependentSelect
0, // DependentProject
0, // DupRemove
0, // Grouping
0, // NestedLoopJoinStrategy
0, // MergeJoinStrategy
0, // Null
0, // PlanExecution
1, // Project
0, // Select
0, // Sort
0 // UnionAll
});
}
/** Order by is not removed */
public void testOrderByWithLimit() throws Exception {
ProcessorPlan plan = TestOptimizer.helpPlan("select * from (SELECT e1, e2 FROM pm1.g1 order by e1 limit 10) x", FakeMetadataFactory.example1Cached(), //$NON-NLS-1$
new String[] { "SELECT g_0.e1 AS c_0, g_0.e2 AS c_1 FROM pm1.g1 AS g_0 ORDER BY c_0"}, ComparisonMode.EXACT_COMMAND_STRING); //$NON-NLS-1$
TestOptimizer.checkNodeTypes(plan, TestOptimizer.FULL_PUSHDOWN);
}
}