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1   /*
2    * Copyright (c) 2010.  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.instmt;
22  
23  import org.apache.expreval.client.InternalErrorException;
24  import org.apache.expreval.client.NullColumnValueException;
25  import org.apache.expreval.client.ResultMissingColumnException;
26  import org.apache.expreval.expr.TypeSupport;
27  import org.apache.expreval.expr.node.BooleanValue;
28  import org.apache.expreval.expr.node.DateValue;
29  import org.apache.expreval.expr.node.GenericValue;
30  import org.apache.expreval.expr.node.NumberValue;
31  import org.apache.expreval.expr.node.StringValue;
32  import org.apache.hadoop.hbase.filter.Filter;
33  import org.apache.hadoop.hbase.hbql.client.HBqlException;
34  import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
35  
36  import java.util.List;
37  
38  public class DelegateInStmt extends GenericInStmt {
39  
40      public DelegateInStmt(final GenericValue arg0, final boolean not, final List<GenericValue> inList) {
41          super(arg0, not, inList);
42      }
43  
44      public Class<? extends GenericValue> validateTypes(final GenericValue parentExpr,
45                                                         final boolean allowCollections) throws HBqlException {
46  
47          final Class<? extends GenericValue> type = this.getExprArg(0).validateTypes(this, false);
48  
49          final Class<? extends GenericValue> inType = this.getGenericValueClass(type);
50  
51          // Make sure all the types are matched
52          for (final GenericValue val : this.getInList())
53              this.validateParentClass(inType, val.validateTypes(this, true));
54  
55          if (TypeSupport.isParentClass(StringValue.class, type))
56              this.setTypedExpr(new StringInStmt(this.getExprArg(0), this.isNot(), this.getInList()));
57          else if (TypeSupport.isParentClass(NumberValue.class, type))
58              this.setTypedExpr(new NumberInStmt(this.getExprArg(0), this.isNot(), this.getInList()));
59          else if (TypeSupport.isParentClass(DateValue.class, type))
60              this.setTypedExpr(new DateInStmt(this.getExprArg(0), this.isNot(), this.getInList()));
61          else if (TypeSupport.isParentClass(BooleanValue.class, type))
62              this.setTypedExpr(new BooleanInStmt(this.getExprArg(0), this.isNot(), this.getInList()));
63          else
64              this.throwInvalidTypeException(type);
65  
66          return this.getTypedExpr().validateTypes(parentExpr, false);
67      }
68  
69      protected boolean evaluateInList(final Object object) throws HBqlException {
70          throw new InternalErrorException();
71      }
72  
73      public GenericValue getOptimizedValue() throws HBqlException {
74          this.optimizeAllArgs();
75          return !this.isAConstant() ? this : this.getTypedExpr().getOptimizedValue();
76      }
77  
78      public Boolean getValue(final HConnectionImpl conn, final Object object) throws HBqlException,
79                                                                                      ResultMissingColumnException,
80                                                                                      NullColumnValueException {
81          return this.getTypedExpr().getValue(conn, object);
82      }
83  
84      public Filter getFilter() throws HBqlException {
85          return this.getTypedExpr().getFilter();
86      }
87  }