Sample Applications

Custom Tag Samples

This section includes the following:

a sample using some of the Oracle JSP Markup Language (JML) custom tags
referrals to additional custom tag samples elsewhere in this document

JML Tag Sample--hellouser_jml.jsp

This section provides a basic sample using some of the Oracle JML custom tags.

This is a modified version of the hellouser.jsp sample provided earlier in this chapter. For contrast, both the JML code and the original code are provided here.

Note that the runtime implementation of the JML tag library is portable to other JSP environments. For an overview of the runtime implementation, see "Overview of the JSP Markup Language (JML) Sample Tag Library". For information about the compile-time (non-portable) implementation, see Appendix C, "Compile-Time JML Tag Support".

Code for hellouser_jml.jsp (using JML tags)

<%-----------------------------------------------------------
   Copyright (c) 1999, Oracle Corporation. All rights reserved.
------------------------------------------------------------%>

<%@page session="false" %>
<%@ taglib uri="WEB-INF/jml.tld" prefix="jml" %>

<jml:useForm id="name" param="newName" scope="request" />

<HTML>
<HEAD>
<TITLE>
Hello User
</TITLE>
</HEAD>

<BODY>

<jml:if condition="!name.isEmpty()" >
<H3>Welcome <jml:print eval="name.getValue()" /></H3>
</jml:if>

<P>
Enter your Name:
<FORM METHOD=get>
<INPUT TYPE=TEXT name=newName size = 20><br>
<INPUT TYPE=SUBMIT VALUE="Submit name">
</FORM>

</BODY>
</HTML>

Code for hellouser.jsp (not using JML tags)

<%-----------------------------------------------------------
   Copyright (c) 1999, Oracle Corporation. All rights reserved.
------------------------------------------------------------%>

<%@page session="false" %>

<jsp:useBean id="name" class="oracle.jsp.jml.JmlString" scope="request" >
      <jsp:setProperty name="name" property="value" param="newName" />
</jsp:useBean>

<HTML>
<HEAD>
<TITLE>
Hello User
</TITLE>
</HEAD>

<BODY>

<% if (!name.isEmpty()) { %>
<H3>Welcome <%= name.getValue() %></H3>
<% } %>

<P>
Enter your Name:
<FORM METHOD=get>
<INPUT TYPE=TEXT name=newName size = 20><br>
<INPUT TYPE=SUBMIT VALUE="Submit name">
</FORM>

</BODY>
</HTML>

Pointers to Additional Custom Tag Samples

Additional custom tag samples are provided elsewhere in this document:

For a complete example of defining and using a standard JSP 1.1-compliant custom tag, see "End-to-End Example: Defining and Using a Custom Tag".
For samples using the Oracle custom tag library for SQL functionality, see "SQL Tag Examples".