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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.betweenstmt;
22  
23  import org.apache.expreval.client.NullColumnValueException;
24  import org.apache.expreval.client.ResultMissingColumnException;
25  import org.apache.expreval.expr.TypeSupport;
26  import org.apache.expreval.expr.node.ByteValue;
27  import org.apache.expreval.expr.node.DateValue;
28  import org.apache.expreval.expr.node.GenericValue;
29  import org.apache.expreval.expr.node.NumberValue;
30  import org.apache.expreval.expr.node.StringValue;
31  import org.apache.hadoop.hbase.filter.Filter;
32  import org.apache.hadoop.hbase.hbql.client.HBqlException;
33  import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
34  import org.apache.hadoop.hbase.hbql.impl.InvalidTypeException;
35  
36  public class DelegateBetweenStmt extends GenericBetweenStmt {
37  
38      public DelegateBetweenStmt(final GenericValue arg0,
39                                 final boolean not,
40                                 final GenericValue arg1,
41                                 final GenericValue arg2) {
42          super(null, not, arg0, arg1, arg2);
43      }
44  
45      public Class<? extends GenericValue> validateTypes(final GenericValue parentExpr,
46                                                         final boolean allowCollections) throws HBqlException {
47  
48          final Class<? extends GenericValue> type0 = this.getExprArg(0).validateTypes(this, false);
49          final Class<? extends GenericValue> type1 = this.getExprArg(1).validateTypes(this, false);
50          final Class<? extends GenericValue> type2 = this.getExprArg(2).validateTypes(this, false);
51  
52          if (TypeSupport.isParentClass(StringValue.class, type0, type1, type2))
53              this.setTypedExpr(new StringBetweenStmt(this.getExprArg(0), this.isNot(), this.getExprArg(1), this.getExprArg(2)));
54          else if (TypeSupport.isParentClass(NumberValue.class, type0, type1, type2))
55              this.setTypedExpr(new NumberBetweenStmt(this.getExprArg(0), this.isNot(), this.getExprArg(1), this.getExprArg(2)));
56          else if (TypeSupport.isParentClass(DateValue.class, type0, type1, type2))
57              this.setTypedExpr(new DateBetweenStmt(this.getExprArg(0), this.isNot(), this.getExprArg(1), this.getExprArg(2)));
58          else if (TypeSupport.isParentClass(ByteValue.class, type0, type1, type2))
59              this.setTypedExpr(new ByteBetweenStmt(this.getExprArg(0), this.isNot(), this.getExprArg(1), this.getExprArg(2)));
60          else
61              throw new InvalidTypeException(this.getInvalidTypeMsg(type0, type1, type2));
62  
63          return this.getTypedExpr().validateTypes(parentExpr, false);
64      }
65  
66      public GenericValue getOptimizedValue() throws HBqlException {
67          this.optimizeAllArgs();
68          return !this.isAConstant() ? this : this.getTypedExpr().getOptimizedValue();
69      }
70  
71      public Boolean getValue(final HConnectionImpl conn, final Object object) throws HBqlException,
72                                                                                      ResultMissingColumnException,
73                                                                                      NullColumnValueException {
74          return this.getTypedExpr().getValue(conn, object);
75      }
76  
77      public Filter getFilter() throws HBqlException {
78          return this.getTypedExpr().getFilter();
79      }
80  }