/*
 * 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 org.apache.phoenix.expression.visitor;

import java.util.List;
import java.util.Map;
import org.apache.phoenix.expression.Expression;
import org.apache.phoenix.expression.function.ScalarFunction;

public class ReplaceArrayFunctionExpressionVisitor extends CloneExpressionVisitor {
  private Map<Expression, Expression> replacementMap;

  public ReplaceArrayFunctionExpressionVisitor(Map<Expression, Expression> replacementMap) {
    this.replacementMap = replacementMap;
  }

  @Override
  public boolean isCloneNode(Expression node, List<Expression> children) {
    return !children.equals(node.getChildren());
  }

  @Override
  public Expression visitLeave(ScalarFunction node, List<Expression> l) {
    Expression replacement = replacementMap.get(node);
    if (replacement != null) {
      return replacement;
    }
    return super.visitLeave(node, l);
  }
}
