Source Code Cross Referenced for AccessDataSource.java in  » GIS » GeoTools-2.4.1 » org » geotools » referencing » factory » epsg » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » GeoTools 2.4.1 » org.geotools.referencing.factory.epsg 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         *    GeoTools - OpenSource mapping toolkit
03:         *    http://geotools.org
04:         *    (C) 2005-2006, GeoTools Project Managment Committee (PMC)
05:         *    (C) 2005, Institut de Recherche pour le Développement
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;
10:         *    version 2.1 of the License.
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:        package org.geotools.referencing.factory.epsg;
18:
19:        // J2SE dependencies
20:        import java.sql.Connection;
21:        import java.sql.SQLException;
22:        import java.util.logging.Level;
23:        import java.util.logging.LogRecord;
24:
25:        // Geotools dependencies
26:        import org.geotools.factory.Hints;
27:        import org.geotools.referencing.factory.AbstractAuthorityFactory;
28:
29:        /**
30:         * Connection to the EPSG database in MS-Access format using JDBC-ODBC bridge. The EPSG
31:         * database can be downloaded from <A HREF="http://www.epsg.org">http://www.epsg.org</A>.
32:         * The JDBC-ODBC bridge is a documented feature of Sun's J2SE distribution. See
33:         * <A HREF="http://java.sun.com/j2se/1.5/docs/guide/jdbc/bridge.html">New data source
34:         * implementations in the JDBC-ODBC bridge</A>.
35:         * <P>
36:         * Just having this class accessible in the classpath, together with the registration in
37:         * the {@code META-INF/services/} directory, is suffisient to get a working EPSG authority
38:         * factory backed by this database. Vendors can create a copy of this class, modify it and
39:         * bundle it with their own distribution if they want to connect their users to an other
40:         * database (for example a PostgreSQL database reachable on internet).
41:         *
42:         * @since 2.1
43:         * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/plugin/epsg-access/src/main/java/org/geotools/referencing/factory/epsg/AccessDataSource.java $
44:         * @version $Id: AccessDataSource.java 26328 2007-07-24 16:57:19Z desruisseaux $
45:         * @author Martin Desruisseaux
46:         *
47:         * @deprecated Replaced by {@link FactoryOnAccess}.
48:         */
49:        public class AccessDataSource extends sun.jdbc.odbc.ee.DataSource
50:                implements  DataSource {
51:            /**
52:             * Creates a new instance of this data source
53:             */
54:            public AccessDataSource() {
55:                setDatabaseName("EPSG");
56:            }
57:
58:            /**
59:             * Returns the priority for this data source. The default implementation returns
60:             * <code>{@linkplain #NORMAL_PRIORITY NORMAL_PRIORITY} - 10</code>.
61:             */
62:            public int getPriority() {
63:                return NORMAL_PRIORITY;
64:            }
65:
66:            /**
67:             * Open a connection and creates an {@linkplain FactoryUsingSQL EPSG factory} for it.
68:             *
69:             * @param  hints A map of hints, including the low-level factories to use for CRS creation.
70:             * @return The EPSG factory using MS-Access SQL syntax.
71:             * @throws SQLException if connection to the database failed.
72:             */
73:            public AbstractAuthorityFactory createFactory(final Hints hints)
74:                    throws SQLException {
75:                final Connection connection;
76:                try {
77:                    connection = getConnection();
78:                } catch (NullPointerException exception) {
79:                    /*
80:                     * This try...catch block should NOT be needed. We added it as a workaround because
81:                     * the JDBC-ODBC bridge on Linux throws a NullPointerException when trying to log a
82:                     * warning to the tracer.
83:                     */
84:                    SQLException e = new SQLException(
85:                            "Unexpected exception in JDBC data source.");
86:                    e.initCause(exception);
87:                    throw e;
88:                }
89:                return new FactoryUsingSQL(hints, connection);
90:            }
91:        }
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