com.hazelcast.org.apache.calcite.rel.mutable.MutableLeafRel 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.mutable;
import com.hazelcast.org.apache.calcite.rel.RelNode;
import com.hazelcast.com.google.common.collect.ImmutableList;
import java.util.List;
/** Abstract base class for implementations of {@link MutableRel} that have
* no inputs. */
abstract class MutableLeafRel extends MutableRel {
protected final RelNode rel;
protected MutableLeafRel(MutableRelType type, RelNode rel) {
super(rel.getCluster(), rel.getRowType(), type);
this.rel = rel;
}
@Override public void setInput(int ordinalInParent, MutableRel input) {
throw new IllegalArgumentException();
}
@Override public List getInputs() {
return ImmutableList.of();
}
@Override public void childrenAccept(MutableRelVisitor visitor) {
// no children - nothing to do
}
}
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