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1   /*
2    * Copyright (c) 2011.  The Apache Software Foundation
3    *
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  
21  package org.apache.expreval.expr;
22  
23  import org.apache.expreval.expr.node.GenericValue;
24  import org.apache.hadoop.hbase.hbql.client.HBqlException;
25  
26  import java.util.List;
27  
28  public abstract class DelegateStmt<T extends GenericExpression> extends GenericExpression {
29  
30      private T typedExpr = null;
31  
32      protected DelegateStmt(final ExpressionType type, GenericValue... args) {
33          super(type, args);
34      }
35  
36      protected DelegateStmt(final ExpressionType type, final List<GenericValue> args) {
37          super(type, args);
38      }
39  
40      protected DelegateStmt(final ExpressionType type, final GenericValue arg, final List<GenericValue> argList) {
41          super(type, arg, argList);
42      }
43  
44      protected T getTypedExpr() {
45          return this.typedExpr;
46      }
47  
48      protected void setTypedExpr(final T typedExpr) throws HBqlException {
49          this.typedExpr = typedExpr;
50  
51          this.getTypedExpr().setExpressionContext(this.getExpressionContext());
52      }
53  }