dirkv 2004/06/16 11:29:20
Added: dbcp/xdocs/guide jndi-howto.xml
Log:
instructions howto setup DBCP datasource inside a custom JNDI tree
Revision Changes Path
1.1 jakarta-commons/dbcp/xdocs/guide/jndi-howto.xml
Index: jndi-howto.xml
===================================================================
<?xml version="1.0" encoding="ISO-8859-1"?>
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<document>
<properties>
<title>Developers Guide</title>
<author email="[EMAIL PROTECTED]">Commons Documentation Team</author>
</properties>
<body>
<section name="JNDI Howto">
<p>
The <a href="http://java.sun.com/products/jndi/";>Java Naming and Directory
Interface</a>
(JNDI) is part of the Java platform,
providing applications based on Java technology with a unified interface to
multiple naming and directory services. You can build powerful and portable
directory-enabled applications using this industry standard.
</p>
<p>
When you deploy your application inside an application server, the container will
setup
the JNDI tree for you. But if you are writing a framework or just a standalone
application,
then the following examples will show you how to construct and bind references to
DBCP
datasources.
</p>
<p>
Another source of information is
<a
href="http://incubator.apache.org/directory/subprojects/naming/index.html";>Naming</a>.
Naming includes an in-memory JNDI service provider that was extracted from the
<a href="http://jakarta.apache.org/tomcat/";>Jakarta Tomcat</a> JNDI implementation.
It also contains a easy way to construct a JNDI tree from an XML file and some
ResourceFactories.
</p>
<p>
The following examples are using the sun filesystem JNDI service provider.
You can download it from the
<a href="http://java.sun.com/products/jndi/downloads/index.html";>JNDI software
download</a> page.
</p>
<p>
You can of course use the apache JNDI service provider by downloading the Naming
core jar.
The initial context factory property should be changed to:
org.apache.naming.java.javaURLContextFactory
</p>
</section>
<section name="BasicDataSource">
<source><![CDATA[
System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.fscontext.RefFSContextFactory");
System.setProperty(Context.PROVIDER_URL, "file:///tmp");
InitialContext ic = new InitialContext();
// Construct BasicDataSource reference
Reference ref = new Reference("javax.sql.DataSource",
"org.apache.commons.dbcp.BasicDataSourceFactory", null);
ref.add(new StringRefAddr("driverClassName",
"org.apache.commons.dbcp.TesterDriver"));
ref.add(new StringRefAddr("url", "jdbc:apache:commons:testdriver"));
ref.add(new StringRefAddr("username", "username"));
ref.add(new StringRefAddr("password", "password"));
ic.rebind("jdbc/basic", ref);
// Use
InitialContext ic2 = new InitialContext();
DataSource ds = (DataSource) ic2.lookup("jdbc/basic");
assertNotNull(ds);
Connection conn = ds.getConnection();
assertNotNull(conn);
conn.close();
]]></source>
</section>
<section name="PerUserPoolDataSource">
<source><![CDATA[
System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
"com.sun.jndi.fscontext.RefFSContextFactory");
System.setProperty(Context.PROVIDER_URL, "file:///tmp");
InitialContext ic = new InitialContext();
// Construct DriverAdapterCPDS reference
Reference cpdsRef = new
Reference("org.apache.commons.dbcp.cpdsadapter.DriverAdapterCPDS",
"org.apache.commons.dbcp.cpdsadapter.DriverAdapterCPDS", null);
cpdsRef.add(new StringRefAddr("driver", "org.apache.commons.dbcp.TesterDriver"));
cpdsRef.add(new StringRefAddr("url", "jdbc:apache:commons:testdriver"));
cpdsRef.add(new StringRefAddr("user", "foo"));
cpdsRef.add(new StringRefAddr("password", "bar"));
ic.rebind("jdbc/cpds", cpdsRef);
// Construct PerUserPoolDataSource reference
Reference ref = new
Reference("org.apache.commons.dbcp.datasources.PerUserPoolDataSource",
"org.apache.commons.dbcp.datasources.PerUserPoolDataSourceFactory", null);
ref.add(new StringRefAddr("dataSourceName", "jdbc/cpds"));
ref.add(new StringRefAddr("defaultMaxActive", "100"));
ref.add(new StringRefAddr("defaultMaxIdle", "30"));
ref.add(new StringRefAddr("defaultMaxWait", "10000"));
ic.rebind("jdbc/peruser", ref);
// Use
InitialContext ic2 = new InitialContext();
DataSource ds = (DataSource) ic2.lookup("jdbc/peruser");
assertNotNull(ds);
Connection conn = ds.getConnection("foo","bar");
assertNotNull(conn);
conn.close();
]]></source>
</section>
</body>
</document>
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