com.hazelcast.org.apache.calcite.sql.fun.SqlBitOpAggFunction Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to you under the Apache License, Version 2.0
* (the "License"); you may not use this file except in com.hazelcast.com.liance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.com.hazelcast.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.hazelcast.org.apache.calcite.sql.fun;
import com.hazelcast.org.apache.calcite.sql.SqlAggFunction;
import com.hazelcast.org.apache.calcite.sql.SqlFunctionCategory;
import com.hazelcast.org.apache.calcite.sql.SqlKind;
import com.hazelcast.org.apache.calcite.sql.SqlSplittableAggFunction;
import com.hazelcast.org.apache.calcite.sql.type.OperandTypes;
import com.hazelcast.org.apache.calcite.sql.type.ReturnTypes;
import com.hazelcast.org.apache.calcite.util.Optionality;
import com.hazelcast.com.google.com.hazelcast.com.on.base.Preconditions;
/**
* Definition of the BIT_AND and BIT_OR aggregate functions,
* returning the bitwise AND/OR of all non-null input values, or null if none.
*
* Only INTEGER types are supported:
* tinyint, smallint, int, bigint
*/
public class SqlBitOpAggFunction extends SqlAggFunction {
//~ Constructors -----------------------------------------------------------
/** Creates a SqlBitOpAggFunction. */
public SqlBitOpAggFunction(SqlKind kind) {
super(kind.name(),
null,
kind,
ReturnTypes.ARG0_NULLABLE_IF_EMPTY,
null,
OperandTypes.INTEGER,
SqlFunctionCategory.NUMERIC,
false,
false,
Optionality.FORBIDDEN);
Preconditions.checkArgument(kind == SqlKind.BIT_AND
|| kind == SqlKind.BIT_OR
|| kind == SqlKind.BIT_XOR);
}
@Override public T unwrap(Class clazz) {
if (clazz == SqlSplittableAggFunction.class) {
return clazz.cast(SqlSplittableAggFunction.SelfSplitter.INSTANCE);
}
return super.unwrap(clazz);
}
@Override public Optionality getDistinctOptionality() {
return Optionality.IGNORED;
}
}