/*
* 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 com.facebook.presto.sql.planner;
import com.facebook.presto.block.BlockAssertions;
import com.facebook.presto.block.BlockUtils;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.metadata.MetadataManager;
import com.facebook.presto.spi.block.BlockBuilder;
import com.facebook.presto.spi.block.BlockBuilderStatus;
import com.facebook.presto.spi.block.BlockCursor;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.sql.tree.ArithmeticExpression;
import com.facebook.presto.sql.tree.Input;
import com.google.common.collect.ImmutableMap;
import org.testng.annotations.Test;
import javax.annotation.Nullable;
import java.util.Locale;
import java.util.Map;
import java.util.Map.Entry;
import static com.facebook.presto.operator.scalar.FunctionAssertions.createExpression;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.BooleanType.BOOLEAN;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static com.facebook.presto.spi.type.TimeZoneKey.UTC_KEY;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
public class TestInterpretedProjectionFunction
{
@Test
public void testBooleanExpression()
{
assertProjection("true", true);
assertProjection("false", false);
assertProjection("1 = 1", true);
assertProjection("1 = 0", false);
assertProjection("true and false", false);
}
@Test
public void testArithmeticExpression()
{
assertProjection("42 + 87", 42L + 87L);
assertProjection("42 + 22.2", 42L + 22.2);
assertProjection("11.1 + 22.2", 11.1 + 22.2);
assertProjection("42 - 87", 42L - 87L);
assertProjection("42 - 22.2", 42L - 22.2);
assertProjection("11.1 - 22.2", 11.1 - 22.2);
assertProjection("42 * 87", 42L * 87L);
assertProjection("42 * 22.2", 42L * 22.2);
assertProjection("11.1 * 22.2", 11.1 * 22.2);
assertProjection("42 / 87", 42L / 87L);
assertProjection("42 / 22.2", 42L / 22.2);
assertProjection("11.1 / 22.2", 11.1 / 22.2);
assertProjection("42 % 87", 42L % 87L);
assertProjection("42 % 22.2", 42L % 22.2);
assertProjection("11.1 % 22.2", 11.1 % 22.2);
}
@Test
public void testArithmeticExpressionWithNulls()
{
for (ArithmeticExpression.Type type : ArithmeticExpression.Type.values()) {
assertProjection("NULL " + type.getValue() + " NULL", null);
assertProjection("42 " + type.getValue() + " NULL", null);
assertProjection("NULL " + type.getValue() + " 42", null);
assertProjection("11.1 " + type.getValue() + " NULL", null);
assertProjection("NULL " + type.getValue() + " 11.1", null);
}
}
@Test
public void testCoalesceExpression()
{
assertProjection("COALESCE(42, 87, 100)", 42L);
assertProjection("COALESCE(NULL, 87, 100)", 87L);
assertProjection("COALESCE(42, NULL, 100)", 42L);
assertProjection("COALESCE(NULL, NULL, 100)", 100L);
assertProjection("COALESCE(42.2, 87.2, 100.2)", 42.2);
assertProjection("COALESCE(NULL, 87.2, 100.2)", 87.2);
assertProjection("COALESCE(42.2, NULL, 100.2)", 42.2);
assertProjection("COALESCE(NULL, NULL, 100.2)", 100.2);
assertProjection("COALESCE('foo', 'bar', 'zah')", "foo");
assertProjection("COALESCE(NULL, 'bar', 'zah')", "bar");
assertProjection("COALESCE('foo', NULL, 'zah')", "foo");
assertProjection("COALESCE(NULL, NULL, 'zah')", "zah");
assertProjection("COALESCE(NULL, NULL, NULL)", null);
}
@Test
public void testNullIf()
{
assertProjection("NULLIF(42, 42)", null);
assertProjection("NULLIF(42, 42.0)", null);
assertProjection("NULLIF(42.42, 42.42)", null);
assertProjection("NULLIF('foo', 'foo')", null);
assertProjection("NULLIF(42, 87)", 42L);
assertProjection("NULLIF(42, 22.2)", 42.0);
assertProjection("NULLIF(42.42, 22.2)", 42.42);
assertProjection("NULLIF('foo', 'bar')", "foo");
assertProjection("NULLIF(NULL, NULL)", null);
assertProjection("NULLIF(42, NULL)", 42L);
assertProjection("NULLIF(NULL, 42)", null);
assertProjection("NULLIF(11.1, NULL)", 11.1);
assertProjection("NULLIF(NULL, 11.1)", null);
}
@Test
public void testSymbolReference()
{
assertProjection("symbol", true, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(BOOLEAN, true));
assertProjection("symbol", null, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(BOOLEAN, null));
assertProjection("symbol", 42L, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(BIGINT, 42));
assertProjection("symbol", null, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(BIGINT, null));
assertProjection("symbol", 11.1, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(DOUBLE, 11.1));
assertProjection("symbol", null, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(DOUBLE, null));
assertProjection("symbol", "foo", ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(VARCHAR, "foo"));
assertProjection("symbol", null, ImmutableMap.of(new Symbol("symbol"), new Input(0)), createCursor(VARCHAR, null));
}
public static void assertProjection(String expression, @Nullable Object expectedValue)
{
assertProjection(expression, expectedValue, ImmutableMap.<Symbol, Input>of());
}
private static void assertProjection(
String expression,
@Nullable Object expectedValue,
Map<Symbol, Input> symbolToInputMappings,
BlockCursor... channels)
{
ImmutableMap.Builder<Symbol, Type> symbolTypes = ImmutableMap.builder();
for (Entry<Symbol, Input> entry : symbolToInputMappings.entrySet()) {
symbolTypes.put(entry.getKey(), channels[entry.getValue().getChannel()].getType());
}
MetadataManager metadata = new MetadataManager();
InterpretedProjectionFunction projectionFunction = new InterpretedProjectionFunction(
createExpression(expression, metadata, symbolTypes.build()),
symbolTypes.build(),
symbolToInputMappings,
metadata,
new ConnectorSession("user", "test", "catalog", "schema", UTC_KEY, Locale.ENGLISH, null, null)
);
// create output
BlockBuilder builder = projectionFunction.getType().createBlockBuilder(new BlockBuilderStatus());
// project
projectionFunction.project(channels, builder);
// extract single value
Object actualValue = BlockAssertions.getOnlyValue(builder.build());
assertEquals(actualValue, expectedValue);
}
private static BlockCursor createCursor(Type type, Object value)
{
BlockBuilder blockBuilder = type.createBlockBuilder(new BlockBuilderStatus());
BlockUtils.appendObject(blockBuilder, value);
BlockCursor cursor = blockBuilder.build().cursor();
assertTrue(cursor.advanceNextPosition());
return cursor;
}
}