Initial checkin.
This commit is contained in:
parent
7e5f191232
commit
d5b0a2f3b7
32 changed files with 4320 additions and 0 deletions
84
simplepool-examples/jndi/index.jsp
Normal file
84
simplepool-examples/jndi/index.jsp
Normal file
|
|
@ -0,0 +1,84 @@
|
|||
<!DOCTYPE html PUBLIC "-//Tigris//DTD XHTML 1.0 Transitional//EN"
|
||||
"http://style.tigris.org/tigris_transitional.dtd">
|
||||
<%@page import="javax.naming.*" %>
|
||||
<html>
|
||||
<head>
|
||||
<style type="text/css">
|
||||
/* <![CDATA[ */
|
||||
@import "../includes/tigris.css";
|
||||
@import "../includes/inst.css";
|
||||
/* ]]> */
|
||||
</style>
|
||||
<title>simplepool: JNDI DataSource Examples</title>
|
||||
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
|
||||
<meta http-equiv="Content-Style-Type" content="text/css" />
|
||||
<script language="javascript" type="text/javascript">
|
||||
<%
|
||||
boolean enabled = false;
|
||||
|
||||
try {
|
||||
enabled = (new InitialContext().lookup("java:comp/env/jdbc/JNDIPoolDS") != null);
|
||||
} catch (Exception ignore) { }
|
||||
%>
|
||||
function RTFM()
|
||||
{
|
||||
alert("Please read the instructions to enable this example.");
|
||||
}
|
||||
</script>
|
||||
</head>
|
||||
<body marginwidth="0" marginheight="0" class="composite">
|
||||
<table border="0" cellspacing="0" cellpadding="4" width="100%" id="main">
|
||||
<tr valign="top">
|
||||
<td>
|
||||
<div id="bodycol">
|
||||
<div id="apphead">
|
||||
<h2><small>simplepool</small><br />
|
||||
JNDI DataSource Examples</h2>
|
||||
</div>
|
||||
<p class="tasknav"><a href="../index.html">Examples Home</a></p>
|
||||
<p><strong>Please read the instructions before trying to run the examples.</strong></p>
|
||||
<div id="examples" class="app">
|
||||
<div class="axial">
|
||||
<table border="0" cellspacing="2" cellpadding="3">
|
||||
<tr>
|
||||
<th>Summary</th>
|
||||
<td>A simple database connection pool example using JDNI.</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<th>Example 1</th>
|
||||
<td><a href="<% if (enabled) { %>scriptlet.jsp<% } else { %>javascript:RTFM()<% } %>">Scriptlet Example</a> [<a href="../source.jsp?file=jndi/scriptlet.jsp">source</a>]</td>
|
||||
</tr>
|
||||
<tr>
|
||||
<th>Example 2</th>
|
||||
<td><a href="<% if (enabled) { %>jstl.jsp<% } else { %>javascript:RTFM()<% } %>">JSTL Example</a> [<a href="../source.jsp?file=jndi/jstl.jsp">source</a>]</td>
|
||||
</tr>
|
||||
</table>
|
||||
</div>
|
||||
<div class="h3" id="instructions">
|
||||
<h3>Instructions</h3>
|
||||
<p>JNDI is used to create, access and manage the connection pool.</p>
|
||||
<p class="alert">First, make sure that your JDBC driver is available, by placing its components in this webapp's WEB-INF/lib/ directory.</p>
|
||||
<p class="alert">The JNDI DataSource is defined as naming resource in the current webapp context, as shown in this minimal <a href="../source.jsp?file=conf/server.xml">server configuration file</a>. </p>
|
||||
<p>The JNDI DataSource is configured using the following parameters:</p>
|
||||
<ul>
|
||||
<li>The <span class="info">varName</span> parameter is used to specify the name of the variable which will hold a reference to the DataSource object created by the Servlet.</li>
|
||||
<li>The <span class="info">driver</span> parameter is used to specify the name of the JDBC driver class to be registered. For <code>example: com.mysql.jdbc.Driver</code>.</li>
|
||||
<li>The <span class="info">user</span> parameter is used to specify the database username, if any.</li>
|
||||
<li>The <span class="info">password</span> parameter is used to specify the database password, if any.</li>
|
||||
<li>The <span class="info">jdbcUrl</span> parameter is used to specify the JDBC URL associated with the database. For example: <code>jdbc:mysql://localhost:3306/dbname</code>.</li>
|
||||
<li>The <span class="info">minConns</span> parameter is used to specify the minimum number of connections to start the pool with.</li>
|
||||
<li>The <span class="info">maxConns</span> parameter is used to specify the maximum number of connections to be dynamically created in the pool.</li>
|
||||
<li>The <span class="info">maxConnTime</span> parameter is used to specify the time (in days) between connection resets. The pool manager will perform a basic cleanup at the specified interval.</li>
|
||||
<li>The <span class="info">maxCheckoutSeconds</span> parameter is used to specify the maximum time a connection can be checked out before being recycled. A zero value turns this option off.</li>
|
||||
</ul>
|
||||
<p>Please note that <em>all parameters are required</em>.</p>
|
||||
<p class="alert">Please take a minute to incorporate the <a href="../source.jsp?file=conf/server.xml">JDNI DataSource example</a> in your <code>$CATALINE_HOME/conf/server.xml</code>. Once done, please restart Tomcat. The examples will be functional upon restart.</p>
|
||||
<p>Please look at the [source] of the provided examples to understand how to access the connection pool from a scriptlet or using the JSTL SQL tags. The examples demonstrates how to list all of the tables contained in the specified database.</p>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
</td>
|
||||
</tr>
|
||||
</table>
|
||||
</body>
|
||||
</html>
|
||||
27
simplepool-examples/jndi/jstl.jsp
Normal file
27
simplepool-examples/jndi/jstl.jsp
Normal file
|
|
@ -0,0 +1,27 @@
|
|||
<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>
|
||||
<%@ taglib prefix="sql" uri="http://java.sun.com/jstl/sql" %>
|
||||
<html>
|
||||
<head>
|
||||
<title>SimplePool JNDI/JSTL Example</title>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<%-- Execute the query using our JNDI DataSource --%>
|
||||
<sql:query var="rs" dataSource="jdbc/JNDIPoolDS">
|
||||
SHOW TABLES
|
||||
</sql:query>
|
||||
|
||||
<h3>Tables</h3>
|
||||
<ul>
|
||||
|
||||
<%--
|
||||
Loop through the result set and
|
||||
display the current column value
|
||||
--%>
|
||||
<c:forEach var="row" items="${rs.rowsByIndex}">
|
||||
<li><c:out value="${row[0]}"/></li>
|
||||
</c:forEach>
|
||||
|
||||
<ul>
|
||||
</body>
|
||||
</html>
|
||||
45
simplepool-examples/jndi/scriptlet.jsp
Normal file
45
simplepool-examples/jndi/scriptlet.jsp
Normal file
|
|
@ -0,0 +1,45 @@
|
|||
<%@page import="javax.naming.*, javax.sql.*, java.sql.*;" %>
|
||||
<html>
|
||||
<head>
|
||||
<title>SimplePool JNDI Example</title>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<%
|
||||
// Get a new initial JNDI context
|
||||
Context ctx = new InitialContext();
|
||||
|
||||
// Get a reference to our JNDI DataSource
|
||||
DataSource ds = (DataSource)ctx.lookup("java:comp/env/jdbc/JNDIPoolDS");
|
||||
|
||||
// Get a connection from the pool
|
||||
Connection conn = ds.getConnection();
|
||||
|
||||
// Create a new statement
|
||||
Statement stmt = conn.createStatement();
|
||||
|
||||
// Execute the query
|
||||
ResultSet rst = stmt.executeQuery("SHOW TABLES");
|
||||
%>
|
||||
|
||||
<h3>Tables</h3>
|
||||
<ul>
|
||||
<%
|
||||
// Loop through the result set and
|
||||
// display the current column value
|
||||
while (rst.next()) {
|
||||
%>
|
||||
<li><%= rst.getString(1) %></li>
|
||||
<%
|
||||
}
|
||||
%>
|
||||
<ul>
|
||||
|
||||
<%
|
||||
// Close the result set, statement and connection
|
||||
rst.close();
|
||||
stmt.close();
|
||||
conn.close();
|
||||
%>
|
||||
</body>
|
||||
</html>
|
||||
Loading…
Add table
Add a link
Reference in a new issue