tablesubquery


1   package com.daffodilwoods.daffodildb.server.sql99.dql.tableexpression.fromclause;
2   
3   import java.util.*;
4   
5   import com.daffodilwoods.daffodildb.server.datadictionarysystem.*;
6   import com.daffodilwoods.daffodildb.server.sql99.common.*;
7   import com.daffodilwoods.daffodildb.server.sql99.expression.booleanvalueexpression.predicates.*;
8   import com.daffodilwoods.daffodildb.server.sql99.expression.expressionprimary.*;
9   import com.daffodilwoods.daffodildb.server.sql99.expression.rowvalueexpression.*;
10  import com.daffodilwoods.daffodildb.server.sql99.utils.*;
11  import com.daffodilwoods.database.resource.*;
12  
13  /**
14   * It represents subquery that is given in from clause.
15   * e.g select * from (select * from A) as A
16   * <p>Title: </p>
17   * <p>Description: </p>
18   * <p>Copyright: Copyright (c) 2004</p>
19   * <p>Company: </p>
20   * @author not attributable
21   * @version 1.0
22   */
23  public class tablesubquery extends AbstractRowValueExpression implements inpredicatevalue {
24    /**
25     * It represents subquery
26     */
27    public subquery _tablesubquery0;
28    /**
29     * Note:- For documentation of following method please refers to documentation
30     * in queryexpressionbody.
31     * @param object
32     * @return
33     * @throws DException
34     */
35     public _ColumnCharacteristics getColumnCharacteristics(Object   object) throws DException {
36        return _tablesubquery0.getColumnCharacteristics(object);
37     }
38  
39     public void setDefaultValues(_VariableValueOperations variableValueOperation) throws DException {
40     }
41  
42     public _Reference[] getReferences(TableDetails[] tableDetails) throws DException {
43        return _tablesubquery0.getReferences(tableDetails);
44     }
45     public Object   run(Object   object) throws com.daffodilwoods.database.resource.DException {
46        return _tablesubquery0.run(object);
47     }
48  
49     public ColumnDetails[] getColumnDetails() throws DException {
50        return new ColumnDetails[0];
51     }
52     public ParameterInfo[] getParameterInfo() throws DException {
53        return _tablesubquery0.getParameterInfo();
54     }
55  
56     public Object  [] getParameters(Object   object) throws DException {
57        return _tablesubquery0.getParameters(object);
58     }
59  
60     public void getColumnsIncluded(ArrayList aList) throws DException {
61        _tablesubquery0.getColumnsIncluded(aList);
62     }
63  
64     public void getTablesIncluded(ArrayList aList) throws DException {
65        _tablesubquery0.getTablesIncluded(aList);
66     }
67  
68     public com.daffodilwoods.daffodildb.server.sql99.utils._Reference[] checkSemantic(com.daffodilwoods.daffodildb.server.serversystem._ServerSession parent) throws DException {
69        return _tablesubquery0.checkSemantic(parent);
70     }
71  
72     public com.daffodilwoods.daffodildb.server.sql99.utils._Reference[] checkSemantic(com.daffodilwoods.daffodildb.server.serversystem._ServerSession parent, boolean checkUserRight) throws DException {
73        return _tablesubquery0.checkSemantic(parent, checkUserRight);
74     }
75  
76     /**
77      * This method is required to get cardinality of tablesubquery.which is required
78      * during semantic checking of predicate.cardinality of tableubquery is number of
79      * all selected column in subquery.
80      * @return
81      * @throws DException
82      */
83     public int getCardinality() throws DException {
84        return _tablesubquery0._queryexpression0.getSelectedColumns().length;
85     }
86  
87     /**
88      * This method is required to get underlying childs.
89      * @return
90      */
91     public AbstractRowValueExpression[] getChilds() {
92        AbstractRowValueExpression[] childs = new AbstractRowValueExpression[] { (AbstractRowValueExpression) _tablesubquery0};
93        return childs;
94     }
95  
96     public String   toString() {
97        StringBuffer   sb = new StringBuffer  ();
98        sb.append(" ");
99        sb.append(_tablesubquery0);
100       return sb.toString();
101    }
102 
103    public Object   clone() throws CloneNotSupportedException   {
104       tablesubquery tempClass = new tablesubquery();
105       tempClass._tablesubquery0 = (subquery) _tablesubquery0.clone();
106       return tempClass;
107    }
108 }
109
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