/*
* 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.type;
import com.facebook.presto.spi.function.IsNull;
import com.facebook.presto.spi.function.ScalarOperator;
import com.facebook.presto.spi.function.SqlType;
import com.facebook.presto.spi.type.StandardTypes;
import io.airlift.slice.Slice;
import io.airlift.slice.XxHash64;
import static com.facebook.presto.spi.function.OperatorType.BETWEEN;
import static com.facebook.presto.spi.function.OperatorType.EQUAL;
import static com.facebook.presto.spi.function.OperatorType.GREATER_THAN;
import static com.facebook.presto.spi.function.OperatorType.GREATER_THAN_OR_EQUAL;
import static com.facebook.presto.spi.function.OperatorType.HASH_CODE;
import static com.facebook.presto.spi.function.OperatorType.IS_DISTINCT_FROM;
import static com.facebook.presto.spi.function.OperatorType.LESS_THAN;
import static com.facebook.presto.spi.function.OperatorType.LESS_THAN_OR_EQUAL;
import static com.facebook.presto.spi.function.OperatorType.NOT_EQUAL;
public final class VarbinaryOperators
{
private VarbinaryOperators()
{
}
@ScalarOperator(EQUAL)
@SqlType(StandardTypes.BOOLEAN)
public static boolean equal(@SqlType(StandardTypes.VARBINARY) Slice left, @SqlType(StandardTypes.VARBINARY) Slice right)
{
return left.equals(right);
}
@ScalarOperator(NOT_EQUAL)
@SqlType(StandardTypes.BOOLEAN)
public static boolean notEqual(@SqlType(StandardTypes.VARBINARY) Slice left, @SqlType(StandardTypes.VARBINARY) Slice right)
{
return !left.equals(right);
}
@ScalarOperator(LESS_THAN)
@SqlType(StandardTypes.BOOLEAN)
public static boolean lessThan(@SqlType(StandardTypes.VARBINARY) Slice left, @SqlType(StandardTypes.VARBINARY) Slice right)
{
return left.compareTo(right) < 0;
}
@ScalarOperator(LESS_THAN_OR_EQUAL)
@SqlType(StandardTypes.BOOLEAN)
public static boolean lessThanOrEqual(@SqlType(StandardTypes.VARBINARY) Slice left, @SqlType(StandardTypes.VARBINARY) Slice right)
{
return left.compareTo(right) <= 0;
}
@ScalarOperator(GREATER_THAN)
@SqlType(StandardTypes.BOOLEAN)
public static boolean greaterThan(@SqlType(StandardTypes.VARBINARY) Slice left, @SqlType(StandardTypes.VARBINARY) Slice right)
{
return left.compareTo(right) > 0;
}
@ScalarOperator(GREATER_THAN_OR_EQUAL)
@SqlType(StandardTypes.BOOLEAN)
public static boolean greaterThanOrEqual(@SqlType(StandardTypes.VARBINARY) Slice left, @SqlType(StandardTypes.VARBINARY) Slice right)
{
return left.compareTo(right) >= 0;
}
@ScalarOperator(BETWEEN)
@SqlType(StandardTypes.BOOLEAN)
public static boolean between(@SqlType(StandardTypes.VARBINARY) Slice value, @SqlType(StandardTypes.VARBINARY) Slice min, @SqlType(StandardTypes.VARBINARY) Slice max)
{
return min.compareTo(value) <= 0 && value.compareTo(max) <= 0;
}
@ScalarOperator(HASH_CODE)
@SqlType(StandardTypes.BIGINT)
public static long hashCode(@SqlType(StandardTypes.VARBINARY) Slice value)
{
// This needs to match the hash function for VARBINARY blocks
// (i.e. AstractVariableWidthBlock.hash(...))
// TODO: we need to get rid of hash from Block and rely on HASH_CODE operators only
return XxHash64.hash(value);
}
@ScalarOperator(IS_DISTINCT_FROM)
@SqlType(StandardTypes.BOOLEAN)
public static boolean isDistinctFrom(
@SqlType(StandardTypes.VARBINARY) Slice left,
@IsNull boolean leftNull,
@SqlType(StandardTypes.VARBINARY) Slice right,
@IsNull boolean rightNull)
{
if (leftNull != rightNull) {
return true;
}
if (leftNull) {
return false;
}
return notEqual(left, right);
}
}