com.hazelcast.org.apache.calcite.schema.TranslatableTable 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 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.
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package com.hazelcast.org.apache.calcite.schema;
import com.hazelcast.org.apache.calcite.plan.RelOptTable;
import com.hazelcast.org.apache.calcite.rel.RelNode;
/**
* Extension to {@link Table} that specifies how it is to be translated to
* a {@link com.hazelcast.org.apache.calcite.rel.RelNode relational expression}.
*
* It is optional for a Table to implement this interface. If Table does
* not implement this interface, it will be converted to an
* {@link com.hazelcast.org.apache.calcite.adapter.enumerable.EnumerableTableScan}.
* Generally a Table will implement this interface to
* create a particular subclass of RelNode, and also register rules that act
* on that particular subclass of RelNode.
*/
public interface TranslatableTable extends Table {
/** Converts this table into a {@link RelNode relational expression}. */
RelNode toRel(
RelOptTable.ToRelContext context,
RelOptTable relOptTable);
}