fromsubquery


1   package com.daffodilwoods.daffodildb.server.sql99.dml;
2   
3   import com.daffodilwoods.daffodildb.server.serversystem.*;
4   import com.daffodilwoods.daffodildb.server.sql99.*;
5   import com.daffodilwoods.daffodildb.server.sql99.common.*;
6   import com.daffodilwoods.daffodildb.server.sql99.dql.queryexpression.*;
7   import com.daffodilwoods.daffodildb.server.sql99.utils.*;
8   import com.daffodilwoods.database.resource.*;
9   import java.util.*;
10  
11  public class fromsubquery implements com.daffodilwoods.daffodildb.utils.parser.StatementExecuter, insertcolumnsandsource {
12  
13     public queryexpression _queryexpression0;
14     public dummyrule _Optdummyrule1;
15     public pareninsertcolumnlist _Optpareninsertcolumnlist2;
16     private _Reference[] references;
17     private ColumnDetails[] columnDetails;
18  
19     /**
20      * This method returns the _Executer returned by the calling the run of Query Expression recieved
21      * It is for inserting multiple records through a select statement.
22      * @param obj
23      * @return _Executer
24      * @throws com.daffodilwoods.database.resource.DException
25      */
26  
27     public Object   run(Object   obj) throws com.daffodilwoods.database.resource.DException {
28        _ServerSession ss = (_ServerSession) obj;
29        references = _queryexpression0.checkSemantic(ss, true);
30        _Executer executer = (_Executer) _queryexpression0.run(ss);
31        checkSemantic(ss);
32        return executer;
33     }
34  
35     /**
36      * This method returns the parameters involved in the Query Specified.
37      * @param object
38      * @return Object[]
39      * @throws DException
40      */
41  
42     public Object  [] getParameters(Object   object) throws DException {
43        return _queryexpression0.getParameters(object);
44     }
45  
46     /**
47      * This method is for checking the validity of the columns, ie the cardinality
48      * @param length
49      * @throws DException
50      */
51  
52     public void checkcolumnsValidity(int length) throws DException {
53        if (_queryexpression0.getSelectedColumns().length != length) {
54           throw new DException("DSE1256", null);
55        }
56     }
57  
58     /**
59      * This method is for performing the syntax checking for the query Expression
60      * @param object
61      * @throws DException
62      */
63  
64     public _Reference[] checkSemantic(_ServerSession object) throws DException {
65        return _queryexpression0.checkSemantic(object, true);
66     }
67  
68     public ColumnDetails[] getColumnDetails() throws DException {
69        if (_Optpareninsertcolumnlist2 != null) {
70           if (columnDetails != null) {
71              return columnDetails;
72           }
73           columnDetails = _Optpareninsertcolumnlist2.getColumnDetails();
74           return columnDetails;
75        }
76        return null;
77     }
78  
79     /**
80      * This method return the Parameter info of the Query Expression
81      * @return ParameterInfo[]
82      * @throws DException
83      */
84  
85     public ParameterInfo[] getParameterInfo() throws DException {
86        return _queryexpression0.getParameterInfo();
87     }
88  
89     /**
90      * This method returns the clone of it's own instance
91      * @return Object ( fromSubQuery )
92      * @throws CloneNotSupportedException
93      */
94  
95     private int[] getCoulmnIntArray(_Reference[] ref) throws DException {
96        int[] toReturn = new int[ref.length];
97        for (int i = 0; i < ref.length; i++) {
98           toReturn[i] = ref[i].getIndex();
99        }
100       return toReturn;
101    }
102 
103    public _Reference[] getReferences(TableDetails[] td) throws DException {
104       return references;
105    }
106 
107    public Object   clone() throws CloneNotSupportedException   {
108       return this;
109    }
110 
111    public String   toString() {
112       StringBuffer   sb = new StringBuffer  ();
113       sb.append(" ");
114       if (_Optpareninsertcolumnlist2 != null) {
115          sb.append(_Optpareninsertcolumnlist2);
116       }
117       sb.append(" ");
118       if (_Optdummyrule1 != null) {
119          sb.append(_Optdummyrule1);
120       }
121       sb.append(" ");
122       sb.append(_queryexpression0);
123       return sb.toString();
124    }
125 
126    public void getTablesIncluded(ArrayList arrayList) throws DException{
127         _queryexpression0.getTablesIncluded(arrayList);
128       }
129 
130 
131 
132 }
133
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags