com.hazelcast.org.apache.calcite.rex.RexVisitor 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;
/**
* Visitor pattern for traversing a tree of {@link RexNode} objects.
*
* @see com.hazelcast.org.apache.calcite.util.Glossary#VISITOR_PATTERN
* @see RexShuttle
* @see RexVisitorImpl
*
* @param Return type
*/
public interface RexVisitor {
//~ Methods ----------------------------------------------------------------
R visitInputRef(RexInputRef inputRef);
R visitLocalRef(RexLocalRef localRef);
R visitLiteral(RexLiteral literal);
R visitCall(RexCall call);
R visitOver(RexOver over);
R visitCorrelVariable(RexCorrelVariable correlVariable);
R visitDynamicParam(RexDynamicParam dynamicParam);
R visitRangeRef(RexRangeRef rangeRef);
R visitFieldAccess(RexFieldAccess fieldAccess);
R visitSubQuery(RexSubQuery subQuery);
R visitTableInputRef(RexTableInputRef fieldRef);
R visitPatternFieldRef(RexPatternFieldRef fieldRef);
}