content: /**
   * 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
   * <p>
   * http://www.apache.org/licenses/LICENSE-2.0
   * <p>
   * 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.atlas.groovy;
  
  /**
   * Base class for all expression that can have a caller.
   */
  public abstract class AbstractFunctionExpression extends AbstractGroovyExpression {
      // null for global functions
      private GroovyExpression  caller;
      private TraversalStepType type = TraversalStepType.NONE;
  
      public AbstractFunctionExpression(GroovyExpression target) {
          this.caller = target;
      }
  
      public AbstractFunctionExpression(TraversalStepType type, GroovyExpression target) {
          this.caller = target;
          this.type   = type;
      }
  
      public GroovyExpression getCaller() {
          return caller;
      }
  
      public void setCaller(GroovyExpression expr) {
          caller = expr;
      }
  
      @Override
      public TraversalStepType getType() {
          return type;
      }
  
      public void setType(TraversalStepType type) {
          this.type = type;
      }
  }
  