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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.stringpattern;
22  
23  import org.apache.expreval.client.NullColumnValueException;
24  import org.apache.expreval.client.ResultMissingColumnException;
25  import org.apache.expreval.expr.node.GenericValue;
26  import org.apache.hadoop.hbase.hbql.client.HBqlException;
27  import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
28  
29  public class ContainsStmt extends GenericStringPatternStmt {
30  
31      public ContainsStmt(final GenericValue valueExpr, final boolean not, final GenericValue patternExpr) {
32          super(valueExpr, not, patternExpr);
33      }
34  
35      protected String getFunctionName() {
36          return "CONTAINS";
37      }
38  
39      public Boolean getValue(final HConnectionImpl conn, final Object object) throws HBqlException,
40                                                                                      ResultMissingColumnException,
41                                                                                      NullColumnValueException {
42  
43          final String val0 = (String)this.getExprArg(0).getValue(conn, object);
44          final String val1 = (String)this.getExprArg(1).getValue(conn, object);
45  
46          if (val0 == null)
47              throw new HBqlException("Null string for value in " + this.asString());
48  
49          if (val1 == null)
50              throw new HBqlException("Null string for pattern in " + this.asString());
51  
52          final boolean retval = val0.contains(val1);
53  
54          return (this.isNot()) ? !retval : retval;
55      }
56  }