com.hazelcast.org.apache.calcite.rel.stream.LogicalDelta 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.rel.stream;
import com.hazelcast.org.apache.calcite.plan.Convention;
import com.hazelcast.org.apache.calcite.plan.RelOptCluster;
import com.hazelcast.org.apache.calcite.plan.RelTraitSet;
import com.hazelcast.org.apache.calcite.rel.RelInput;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import java.util.List;
/**
* Sub-class of {@link com.hazelcast.org.apache.calcite.rel.stream.Delta}
* not targeted at any particular engine or calling convention.
*/
public final class LogicalDelta extends Delta {
/**
* Creates a LogicalDelta.
*
* Use {@link #create} unless you know what you're doing.
*
* @param cluster Cluster that this relational expression belongs to
* @param input Input relational expression
*/
public LogicalDelta(RelOptCluster cluster, RelTraitSet traits,
RelNode input) {
super(cluster, traits, input);
}
/** Creates a LogicalDelta by parsing serialized output. */
public LogicalDelta(RelInput input) {
super(input);
}
/** Creates a LogicalDelta. */
public static LogicalDelta create(RelNode input) {
final RelTraitSet traitSet = input.getTraitSet().replace(Convention.NONE);
return new LogicalDelta(input.getCluster(), traitSet, input);
}
@Override public RelNode copy(RelTraitSet traitSet, List inputs) {
return new LogicalDelta(getCluster(), traitSet, sole(inputs));
}
}