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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
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package org.teiid.query.function;
import org.teiid.api.exception.query.ExpressionEvaluationException;
import org.teiid.api.exception.query.QueryParserException;
import org.teiid.api.exception.query.QueryResolverException;
import org.teiid.common.buffer.BlockedException;
import org.teiid.core.TeiidComponentException;
import org.teiid.core.types.DataTypeManager;
import org.teiid.query.eval.Evaluator;
import org.teiid.query.parser.QueryParser;
import org.teiid.query.resolver.util.ResolverVisitor;
import org.teiid.query.sql.symbol.Expression;
import org.teiid.query.unittest.RealMetadataFactory;
import junit.framework.TestCase;
public class TestResolvedFunctions extends TestCase {
public void testPowerIntegers() throws Exception {
String sql = "power(10, 10)"; //$NON-NLS-1$
//BigInteger is a closer match here since the second argument matches
assertEquals(DataTypeManager.DefaultDataClasses.BIG_INTEGER, getFunctionResult(sql).getClass());
}
public void testPowerDoubles() throws Exception {
String sql = "power(10.01, 10.01)"; //$NON-NLS-1$
assertEquals(DataTypeManager.DefaultDataClasses.DOUBLE, getFunctionResult(sql).getClass());
}
public void testPowerFloats() throws Exception {
String sql = "power(convert(10.01, float), convert(10.01, float))"; //$NON-NLS-1$
//since the second argument cannot be converted to an integer, the result is a double
assertEquals(DataTypeManager.DefaultDataClasses.DOUBLE, getFunctionResult(sql).getClass());
}
public void testPowerBigInteger() throws Exception {
String sql = "power(convert(10.01, BigInteger), 10)"; //$NON-NLS-1$
assertEquals(DataTypeManager.DefaultDataClasses.BIG_INTEGER, getFunctionResult(sql).getClass());
}
//there should only be one signature for ceiling. The float argument will be converted to a double
public void testCeilingFloat() throws Exception {
String sql = "ceiling(convert(10.01, float))"; //$NON-NLS-1$
assertEquals(DataTypeManager.DefaultDataClasses.DOUBLE, getFunctionResult(sql).getClass());
}
//same as above
public void testFloorFloat() throws Exception {
String sql = "floor(convert(10.01, float))"; //$NON-NLS-1$
assertEquals(DataTypeManager.DefaultDataClasses.DOUBLE, getFunctionResult(sql).getClass());
}
private Object getFunctionResult(String sql) throws QueryParserException,
ExpressionEvaluationException,
BlockedException,
TeiidComponentException, QueryResolverException {
Expression expr = QueryParser.getQueryParser().parseExpression(sql);
ResolverVisitor.resolveLanguageObject(expr, RealMetadataFactory.example1Cached());
return Evaluator.evaluate(expr);
}
}