01: package net.sourceforge.squirrel_sql.plugins.db2.tab;
02:
03: /*
04: * Copyright (C) 2007 Rob Manning
05: * manningr@users.sourceforge.net
06: *
07: * This library is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU Lesser General Public
09: * License as published by the Free Software Foundation; either
10: * version 2.1 of the License, or (at your option) any later version.
11: *
12: * This library is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15: * Lesser General Public License for more details.
16: *
17: * You should have received a copy of the GNU Lesser General Public
18: * License along with this library; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20: */
21: import java.sql.PreparedStatement;
22: import java.sql.SQLException;
23:
24: import net.sourceforge.squirrel_sql.fw.sql.IDatabaseObjectInfo;
25: import net.sourceforge.squirrel_sql.fw.sql.ISQLConnection;
26: import net.sourceforge.squirrel_sql.fw.util.log.ILogger;
27: import net.sourceforge.squirrel_sql.fw.util.log.LoggerController;
28:
29: import net.sourceforge.squirrel_sql.client.session.ISession;
30: import net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree.tabs.FormattedSourceTab;
31:
32: /**
33: * This class will display the source for an DB2 User-Defined function.
34: *
35: * @author manningr
36: */
37: public class UDFSourceTab extends FormattedSourceTab {
38: /** SQL that retrieves the source of a user-defined function. */
39: private static String SQL = "SELECT " + "case "
40: + " when body is null then 'No source available' "
41: + " else body " + "end " + "FROM SYSIBM.SYSFUNCTIONS "
42: + "WHERE schema = ? " + "AND name = ? "
43: + "AND implementation is null ";
44:
45: /** SQL that retrieves the source of a user-defined function on OS/400 */
46: private static final String OS_400_SQL = "select "
47: + "case "
48: + " when body = 'SQL' and routine_definition is not null then routine_definition "
49: + " when body = 'SQL' and routine_definition is null then 'no source available' "
50: + " when body = 'EXTERNAL' and external_name is not null then external_name "
51: + " when body = 'EXTERNAL' and external_name is null then 'system-generated function' "
52: + "end as definition " + "from QSYS2.SYSFUNCS "
53: + "where routine_schema = ? " + "and routine_name = ? ";
54:
55: /** Logger for this class. */
56: private final static ILogger s_log = LoggerController
57: .createLogger(UDFSourceTab.class);
58:
59: /** whether or not we are connected to OS/400 */
60: private boolean isOS400 = false;
61:
62: /**
63: * Constructor
64: *
65: * @param hint
66: * @param stmtSep
67: * @param isOS400 whether or not we are connected to OS/400
68: */
69: public UDFSourceTab(String hint, String stmtSep, boolean isOS400) {
70: super (hint);
71: super .setCompressWhitespace(true);
72: super .setupFormatter(stmtSep, null);
73: this .isOS400 = isOS400;
74: }
75:
76: /**
77: * @see net.sourceforge.squirrel_sql.client.session.mainpanel.objecttree.tabs.BaseSourceTab#createStatement()
78: */
79: @Override
80: protected PreparedStatement createStatement() throws SQLException {
81: final ISession session = getSession();
82: final IDatabaseObjectInfo doi = getDatabaseObjectInfo();
83:
84: String sql = SQL;
85: if (isOS400) {
86: sql = OS_400_SQL;
87: }
88: if (s_log.isDebugEnabled()) {
89: s_log.debug("Running SQL: " + sql);
90: s_log.debug("schema=" + doi.getSchemaName());
91: s_log.debug("udf name=" + doi.getSimpleName());
92: }
93: ISQLConnection conn = session.getSQLConnection();
94: PreparedStatement pstmt = conn.prepareStatement(sql);
95: pstmt.setString(1, doi.getSchemaName());
96: pstmt.setString(2, doi.getSimpleName());
97: return pstmt;
98: }
99: }
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