com.hazelcast.org.apache.calcite.interpreter.InterpretableRel 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 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.hazelcast.org.apache.calcite.interpreter;
import com.hazelcast.org.apache.calcite.DataContext;
import com.hazelcast.org.apache.calcite.jdbc.CalcitePrepare;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
/**
* Relational expression that can implement itself using an interpreter.
*/
public interface InterpretableRel extends RelNode {
/** Creates an interpreter node to implement this relational expression. */
Node implement(InterpreterImplementor implementor);
/** Context when a {@link RelNode} is being converted to an interpreter
* {@link Node}. */
class InterpreterImplementor {
public final Compiler compiler;
public final Map internalParameters =
new LinkedHashMap<>();
public final CalcitePrepare.@Nullable SparkHandler spark;
public final DataContext dataContext;
public final Map> relSinks = new HashMap<>();
public InterpreterImplementor(Compiler compiler,
CalcitePrepare.@Nullable SparkHandler spark,
DataContext dataContext) {
this.compiler = compiler;
this.spark = spark;
this.dataContext = dataContext;
}
}
}