com.hazelcast.org.apache.calcite.adapter.enumerable.AggContext Maven / Gradle / Ivy
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* 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.adapter.enumerable;
import com.hazelcast.org.apache.calcite.rel.type.RelDataType;
import com.hazelcast.org.apache.calcite.sql.SqlAggFunction;
import com.hazelcast.org.apache.calcite.util.ImmutableBitSet;
import java.lang.reflect.Type;
import java.util.List;
/**
* Information on the aggregate calculation context.
* {@link AggAddContext} provides basic static information on types of arguments
* and the return value of the aggregate being implemented.
*/
public interface AggContext {
/**
* Returns the aggregation being implemented.
* @return aggregation being implemented.
*/
SqlAggFunction aggregation();
/**
* Returns the return type of the aggregate as
* {@link com.hazelcast.org.apache.calcite.rel.type.RelDataType}.
* This can be helpful to test
* {@link com.hazelcast.org.apache.calcite.rel.type.RelDataType#isNullable()}.
*
* @return return type of the aggregate
*/
RelDataType returnRelType();
/**
* Returns the return type of the aggregate as {@link java.lang.reflect.Type}.
* @return return type of the aggregate as {@link java.lang.reflect.Type}
*/
Type returnType();
/**
* Returns the parameter types of the aggregate as
* {@link com.hazelcast.org.apache.calcite.rel.type.RelDataType}.
* This can be helpful to test
* {@link com.hazelcast.org.apache.calcite.rel.type.RelDataType#isNullable()}.
*
* @return Parameter types of the aggregate
*/
List parameterRelTypes();
/**
* Returns the parameter types of the aggregate as
* {@link java.lang.reflect.Type}.
*
* @return Parameter types of the aggregate
*/
List parameterTypes();
/** Returns the ordinals of the input fields that make up the key. */
List keyOrdinals();
/**
* Returns the types of the group key as
* {@link com.hazelcast.org.apache.calcite.rel.type.RelDataType}.
*/
List keyRelTypes();
/**
* Returns the types of the group key as
* {@link java.lang.reflect.Type}.
*/
List keyTypes();
/** Returns the grouping sets we are aggregating on. */
List groupSets();
}