com.hazelcast.org.apache.calcite.rel.logical.LogicalTableSpool 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package com.hazelcast.org.apache.calcite.rel.logical;
import com.hazelcast.org.apache.calcite.linq4j.function.Experimental;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.RelOptCluster;
import com.hazelcast.org.apache.calcite.plan.RelOptTable;
import com.hazelcast.org.apache.calcite.plan.RelTraitSet;
import com.hazelcast.org.apache.calcite.rel.RelCollationTraitDef;
import com.hazelcast.org.apache.calcite.rel.RelDistributionTraitDef;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.org.apache.calcite.rel.core.Spool;
import com.hazelcast.org.apache.calcite.rel.core.TableSpool;
import com.hazelcast.org.apache.calcite.rel.metadata.RelMetadataQuery;
/**
* Sub-class of {@link TableSpool} not targeted at any particular engine or
* calling convention.
*
* NOTE: The current API is experimental and subject to change without
* notice.
*/
@Experimental
public class LogicalTableSpool extends TableSpool {
//~ Constructors -----------------------------------------------------------
public LogicalTableSpool(RelOptCluster cluster, RelTraitSet traitSet, RelNode input,
Type readType, Type writeType, RelOptTable table) {
super(cluster, traitSet, input, readType, writeType, table);
}
/** Creates a LogicalTableSpool. */
public static LogicalTableSpool create(RelNode input, Type readType,
Type writeType, RelOptTable table) {
RelOptCluster cluster = input.getCluster();
RelMetadataQuery mq = cluster.getMetadataQuery();
RelTraitSet traitSet = cluster.traitSetOf(Convention.NONE)
.replaceIfs(RelCollationTraitDef.INSTANCE,
() -> mq.collations(input))
.replaceIf(RelDistributionTraitDef.INSTANCE,
() -> mq.distribution(input));
return new LogicalTableSpool(cluster, traitSet, input, readType, writeType, table);
}
//~ Methods ----------------------------------------------------------------
@Override protected Spool copy(RelTraitSet traitSet, RelNode input,
Type readType, Type writeType) {
return new LogicalTableSpool(input.getCluster(), traitSet, input,
readType, writeType, table);
}
}