Mercurial > dive4elements > framework

annotate artifact-database/src/main/java/de/intevation/artifactdatabase/SQL.java @ 106:ece0fdb07975

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Implementations to initialize and retrieve states. artifacts/trunk@1291 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Fri, 04 Feb 2011 10:50:53 +0000
parents 933bbc9fc11f
children b2115f484edb
rev   line source
100
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
1 /*
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
2 * Copyright (c) 2010 by Intevation GmbH
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
3 *
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
4 * This program is free software under the LGPL (>=v2.1)
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
5 * Read the file LGPL.txt coming with the software for details
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
6 * or visit http://www.gnu.org/licenses/ if it does not exist.
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
7 */
933bbc9fc11f Added license file and license headers.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 94
diff changeset
8
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
9 package de.intevation.artifactdatabase;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
10
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
11 import java.io.IOException;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
12 import java.io.InputStream;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
13
93
e27cf9c84eb8 Unified imports.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 87
diff changeset
14 import java.util.Properties;
e27cf9c84eb8 Unified imports.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 87
diff changeset
15
17
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
16 import org.apache.log4j.Logger;
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
17
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
18 /**
87
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
19 * Singleton to provide SQL statement strings as key/value pairs.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
20 * This mechanism is used to encapsulate database specific SQL
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
21 * dialects.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
22 *
80
8447467cef86 Implementation to import artifacts from incoming xml documents (applied patch from issue208 by SLT).
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 47
diff changeset
23 * @author <a href="mailto:sascha.teichmann@intevation.de">Sascha L. Teichmann</a>
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
24 */
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
25 public final class SQL
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
26 {
17
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
27 private static Logger logger = Logger.getLogger(SQL.class);
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
28
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
29 private SQL() {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
30 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
31
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
32 private static Properties statements;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
33
87
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
34 /**
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
35 * Returns key/value pairs of SQL statements for the used database
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
36 * backend.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
37 * The concrete set of SQL statements is determined by the
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
38 * used JDBC database driver which is configured in conf.xml.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
39 * The class name of the driver is transformed by replacing
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
40 * all '.' with '_' and lower case the resulting string.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
41 * The transformed string is used to load a properties file
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
42 * in '/sql/' which should contain the statements.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
43 * Example:<br>
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
44 * <code>org.postgresql.Driver</code> results in loading of
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
45 * <code>/sql/org-postgresql-driver.properties</code>.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
46 * @return The key/value pairs of SQL statements.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
47 */
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
48 public static final synchronized Properties getStatements() {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
49 if (statements == null) {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
50 statements = loadStatements();
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
51 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
52 return statements;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
53 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
54
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
55 private static final Properties loadStatements() {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
56 String driver = Config.getStringXPath(
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
57 DBConnection.DB_DRIVER, DBConnection.DEFAULT_DRIVER);
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
58
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
59 Properties properties = new Properties();
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
60
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
61 InputStream in = null;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
62 try {
47
4ae4dc99127d Removed trailing whitespace.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 17
diff changeset
63 String res = "/sql/" + driver.replace('.', '-').toLowerCase()
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
64 + ".properties";
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
65 in = SQL.class.getResourceAsStream(res);
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
66
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
67 if (in == null) {
17
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
68 logger.warn("No SQL file for driver '" + driver + "' found.");
94
5332d956729c Brought all line lengths of non Javadoc lines below 80.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 93
diff changeset
69 res = "/sql/"
5332d956729c Brought all line lengths of non Javadoc lines below 80.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 93
diff changeset
70 + DBConnection.DEFAULT_DRIVER.replace('.', '-')
5332d956729c Brought all line lengths of non Javadoc lines below 80.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 93
diff changeset
71 .toLowerCase()
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
72 + ".properties";
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
73 if ((in = SQL.class.getResourceAsStream(res)) == null) {
17
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
74 logger.error("No SQL file found");
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
75 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
76 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
77
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
78 properties.load(in);
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
79 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
80 catch (IOException ioe) {
17
5a6b6a3debc7 Integrated logging into artifact database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 14
diff changeset
81 logger.error(ioe.getLocalizedMessage(), ioe);
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
82 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
83 finally {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
84 if (in != null) {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
85 try { in.close(); } catch (IOException ioe) {}
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
86 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
87 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
88
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
89 return properties;
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
90 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
91
87
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
92 /**
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
93 * Returns a particular SQL statement for a given key.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
94 * @param key The key of the statement.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
95 * @return The corresponing SQL statement or null if none
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
96 * is found.
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
97 */
14
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
98 public static final String get(String key) {
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
99 return getStatements().getProperty(key);
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
100 }
0d16d1bb2df0 Initial checkin of artigact persistents back by database.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents:
diff changeset
101 }
87
0f48188a6e02 Added some javadoc to the artifactdatabase module. Not done yet.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
parents: 80
diff changeset
102 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org