KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > daffodilwoods > daffodildb > server > sql99 > dml > openstatement


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.dml.declarecursor.*;
7 import com.daffodilwoods.daffodildb.server.sql99.token.*;
8 import com.daffodilwoods.daffodildb.server.sql99.utils.*;
9 import com.daffodilwoods.database.resource.*;
10
11 /**
12  * This Class is responsible to open a cursor.
13  * <p>Title: </p>
14  * <p>Description: </p>
15  * <p>Copyright: Copyright (c) 2003</p>
16  * <p>Company: </p>
17  * @author unascribed
18  * @version 1.0
19  */
20 public class openstatement implements com.daffodilwoods.daffodildb.utils.parser.StatementExecuter,
21     SQLdatastatement, _Executer {
22
23    public cursorname _cursorname0;
24    public SRESERVEDWORD1206543922 _SRESERVEDWORD12065439221;
25
26    private _Cursor cursor = null;
27    private _ServerSession currentSession;
28
29    /**
30     * Checks the validity of cursor name and returns the references.
31     * @param serverSession
32     * @return
33     * @throws DException
34     */
35    public _Reference[] checkSemantic(_ServerSession serverSession) throws
36        DException {
37       return _cursorname0.getReferences(new TableDetails[0]);
38    }
39
40    /**
41     * Determines the name of the cursor & sets the cursor state.
42     * @param object
43     * @return
44     * @throws DException
45     */
46    public Object JavaDoc run(Object JavaDoc object) throws DException {
47       _StatementExecutionContext sec = (_StatementExecutionContext) object;
48       currentSession = sec.getServerSession();
49       String JavaDoc Cname = (String JavaDoc) _cursorname0.run(null);
50       cursor = (_Cursor) currentSession.getCursor(Cname);
51       if (cursor.getCursorState()) {
52          throw new DException("DSE1261", new Object JavaDoc[] {Cname});
53       }
54       cursor.setCursorState(true);
55       return this;
56    }
57
58    public Object JavaDoc execute(_VariableValues vv1) throws DException {
59       cursor.setCursorState(true);
60       return "Cursor opened successfully";
61    }
62
63    public Object JavaDoc execute(Object JavaDoc[] obj) throws DException {
64       throw new RuntimeException JavaDoc(
65           " Method execute with Object Array not Valid in Cursor open statement ");
66    }
67
68    public String JavaDoc toString() {
69       StringBuffer JavaDoc clause = new StringBuffer JavaDoc();
70       clause.append(" ");
71       if(_SRESERVEDWORD12065439221!=null)
72       clause.append(_SRESERVEDWORD12065439221.toString());
73       clause.append(" ");
74       clause.append(_cursorname0.toString());
75       return clause.toString().trim();
76    }
77
78    public Object JavaDoc[] getParameters(Object JavaDoc parm1) throws DException {
79       return null;
80    }
81
82    public Object JavaDoc executeForFresh(Object JavaDoc[] obj) throws DException {
83       throw new java.lang.UnsupportedOperationException JavaDoc(
84           "Method executeForFresh not yet implemented.");
85    }
86
87    public _Reference[] getReferences() throws DException {
88       return null;
89    }
90
91    public Object JavaDoc clone() throws CloneNotSupportedException JavaDoc {
92       return this;
93    }
94 }
95
Popular Tags