com.hazelcast.org.apache.calcite.rex.RexUnaryBiVisitor 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.rex;
import com.hazelcast.org.checkerframework.checker.nullness.qual.Nullable;
/**
* Default implementation of a {@link RexBiVisitor} whose payload and return
* type are the same.
*
* @param Return type from each {@code visitXxx} method
*/
public class RexUnaryBiVisitor<@Nullable R> extends RexBiVisitorImpl {
/** Creates a RexUnaryBiVisitor. */
protected RexUnaryBiVisitor(boolean deep) {
super(deep);
}
/** Called as the last action of, and providing the result for,
* each {@code visitXxx} method; derived classes may override. */
protected R end(RexNode e, R arg) {
return arg;
}
@Override public R visitInputRef(RexInputRef inputRef, R arg) {
return end(inputRef, arg);
}
@Override public R visitLocalRef(RexLocalRef localRef, R arg) {
return end(localRef, arg);
}
@Override public R visitTableInputRef(RexTableInputRef ref, R arg) {
return end(ref, arg);
}
@Override public R visitPatternFieldRef(RexPatternFieldRef fieldRef, R arg) {
return end(fieldRef, arg);
}
@Override public R visitLiteral(RexLiteral literal, R arg) {
return end(literal, arg);
}
@Override public R visitDynamicParam(RexDynamicParam dynamicParam, R arg) {
return end(dynamicParam, arg);
}
@Override public R visitRangeRef(RexRangeRef rangeRef, R arg) {
return end(rangeRef, arg);
}
@Override public R visitCorrelVariable(RexCorrelVariable correlVariable, R arg) {
return end(correlVariable, arg);
}
@Override public R visitOver(RexOver over, R arg) {
super.visitOver(over, arg);
return end(over, arg);
}
@Override public R visitCall(RexCall call, R arg) {
super.visitCall(call, arg);
return end(call, arg);
}
@Override public R visitFieldAccess(RexFieldAccess fieldAccess, R arg) {
super.visitFieldAccess(fieldAccess, arg);
return end(fieldAccess, arg);
}
@Override public R visitSubQuery(RexSubQuery subQuery, R arg) {
super.visitSubQuery(subQuery, arg);
return end(subQuery, arg);
}
}
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