com.hazelcast.org.apache.calcite.adapter.enumerable.AggImpState 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.adapter.enumerable;
import com.hazelcast.org.apache.calcite.linq4j.tree.Expression;
import com.hazelcast.org.apache.calcite.rel.core.AggregateCall;
import java.util.List;
/**
* Represents internal state when implementing aggregate functions.
*/
public class AggImpState {
public final int aggIdx;
public final AggregateCall call;
public final AggImplementor implementor;
public AggContext context;
public Expression result;
public List state;
public Expression accumulatorAdder;
public AggImpState(int aggIdx, AggregateCall call, boolean windowContext) {
this.aggIdx = aggIdx;
this.call = call;
this.implementor =
RexImpTable.INSTANCE.get(call.getAggregation(), windowContext);
if (implementor == null) {
throw new IllegalArgumentException(
"Unable to get aggregate implementation for aggregate "
+ call.getAggregation()
+ (windowContext ? " in window context" : ""));
}
}
}