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* regarding copyright ownership. Some portions may be licensed
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*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
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* 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
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package org.teiid.translator.hive;
import static org.junit.Assert.*;
import java.util.Arrays;
import org.junit.BeforeClass;
import org.junit.Test;
import org.teiid.cdk.CommandBuilder;
import org.teiid.language.Command;
import org.teiid.language.Expression;
import org.teiid.language.Function;
import org.teiid.language.LanguageFactory;
import org.teiid.language.Select;
import org.teiid.query.metadata.TransformationMetadata;
import org.teiid.query.unittest.RealMetadataFactory;
import org.teiid.translator.TranslatorException;
import org.teiid.translator.TypeFacility;
import org.teiid.translator.jdbc.FunctionModifier;
import org.teiid.translator.jdbc.SQLConversionVisitor;
@SuppressWarnings("nls")
public class TestImpalaExecutionFactory {
private static ImpalaExecutionFactory impalaTranslator;
private static final LanguageFactory LANG_FACTORY = new LanguageFactory();
private static TransformationMetadata bqt;
@BeforeClass
public static void setUp() throws TranslatorException {
impalaTranslator = new ImpalaExecutionFactory();
impalaTranslator.setUseBindVariables(false);
impalaTranslator.start();
bqt = TestHiveExecutionFactory.exampleBQT();
}
private void helpTest(Expression srcExpression, String tgtType, String expectedExpression) throws Exception {
Function func = LANG_FACTORY.createFunction("convert", Arrays.asList( srcExpression,LANG_FACTORY.createLiteral(tgtType, String.class)),TypeFacility.getDataTypeClass(tgtType));
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(func);
assertEquals("Error converting from " + srcExpression.getType() + " to " + tgtType, expectedExpression,sqlVisitor.toString());
}
@Test public void testConvertions() throws Exception {
helpTest(LANG_FACTORY.createLiteral(new Integer(12345), Integer.class), TypeFacility.RUNTIME_NAMES.DOUBLE, "cast(12345 AS double)");
}
@Test public void testConversionSupport() {
assertFalse(impalaTranslator.supportsConvert(FunctionModifier.TIMESTAMP, FunctionModifier.TIME));
assertTrue(impalaTranslator.supportsConvert(FunctionModifier.STRING, FunctionModifier.TIMESTAMP));
}
@Test public void testJoin() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.example1Cached());
Command obj = commandBuilder.getCommand("select pm1.g1.e1 from pm1.g1 inner join pm1.g2 inner join pm1.g3 on pm1.g2.e2 = pm1.g3.e2 on pm1.g1.e1 = pm1.g2.e1");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT g1.e1 FROM g2 JOIN g3 ON g2.e2 = g3.e2 JOIN g1 ON g1.e1 = g2.e1", sqlVisitor.toString());
}
@Test public void testStringLiteral() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.example1Cached());
Command obj = commandBuilder.getCommand("select pm1.g1.e2 from pm1.g1 where pm1.g1.e1 = 'a''b\\c'");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT g1.e2 FROM g1 WHERE g1.e1 = 'a\\'b\\\\c'", sqlVisitor.toString());
}
@Test public void testMultipleDistinctAggregates() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.example1Cached());
Command obj = commandBuilder.getCommand("select count(distinct pm1.g1.e1), 1, count(distinct pm1.g1.e2), avg(distinct pm1.g1.e4) from pm1.g1");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT v0.c0, v0.c1, v1.c2, v2.c3 FROM (SELECT COUNT(DISTINCT g1.e1) AS c0, 1 AS c1 FROM g1) v0 CROSS JOIN (SELECT COUNT(DISTINCT g1.e2) AS c2 FROM g1) v1 CROSS JOIN (SELECT AVG(DISTINCT g1.e4) AS c3 FROM g1) v2", sqlVisitor.toString());
obj = commandBuilder.getCommand("select count(distinct pm1.g1.e1), 1, count(distinct pm1.g1.e2), avg(distinct pm1.g1.e4) from pm1.g1 where pm1.g1.e3 = true");
sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT v0.c0, v0.c1, v1.c2, v2.c3 FROM (SELECT COUNT(DISTINCT g1.e1) AS c0, 1 AS c1 FROM g1 WHERE g1.e3 = true) v0 CROSS JOIN (SELECT COUNT(DISTINCT g1.e2) AS c2 FROM g1 WHERE g1.e3 = true) v1 CROSS JOIN (SELECT AVG(DISTINCT g1.e4) AS c3 FROM g1 WHERE g1.e3 = true) v2", sqlVisitor.toString());
}
@Test public void testOffset() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.example1Cached());
Command obj = commandBuilder.getCommand("select pm1.g1.e2 from pm1.g1 limit 1, 2");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT g1.e2 FROM g1 ORDER BY 1 LIMIT 2 OFFSET 1", sqlVisitor.toString());
obj = commandBuilder.getCommand("select pm1.g1.e2, pm1.g1.e1 from pm1.g1 order by e1 limit 1, 100");
sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT g1.e2, g1.e1 FROM g1 ORDER BY e1 LIMIT 100 OFFSET 1", sqlVisitor.toString());
}
@Test public void testOrderedUnion() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.exampleBQTCached());
Command obj = commandBuilder.getCommand("SELECT g_1.StringNum AS c_0 FROM bqt1.SmallA AS g_1 WHERE g_1.IntKey <= 50 UNION ALL SELECT g_0.StringNum AS c_0 FROM bqt1.SmallB AS g_0 WHERE g_0.IntKey > 50 ORDER BY c_0 limit 10");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT c_0 FROM (SELECT g_1.StringNum AS c_0 FROM SmallA g_1 WHERE g_1.IntKey <= 50 UNION ALL SELECT g_0.StringNum AS c_0 FROM SmallB g_0 WHERE g_0.IntKey > 50) X__ ORDER BY c_0 LIMIT 10", sqlVisitor.toString());
}
@Test public void testDistinctAggregate() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.exampleBQTCached());
Command obj = commandBuilder.getCommand("SELECT distinct max(StringNum) FROM bqt1.SmallA group by stringkey");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("SELECT DISTINCT c_0 FROM (SELECT MAX(SmallA.StringNum) AS c_0 FROM SmallA GROUP BY SmallA.StringKey) X__", sqlVisitor.toString());
}
@Test public void testWith() {
CommandBuilder commandBuilder = new CommandBuilder(RealMetadataFactory.exampleBQTCached());
Select obj = (Select) commandBuilder.getCommand("with x as /*+ no_inline */ (SELECT max(StringNum) as a FROM bqt1.SmallA group by stringkey) select * from x");
SQLConversionVisitor sqlVisitor = impalaTranslator.getSQLConversionVisitor();
sqlVisitor.append(obj);
assertEquals("WITH x AS (SELECT MAX(SmallA.StringNum) AS a FROM SmallA GROUP BY SmallA.StringKey) SELECT x.a FROM x", sqlVisitor.toString());
}
}