¾Õ¿¡¼ InvokeEJBTag¿¡ ´ëÇÑ ±¸ÇöÄڵ带 »ìÆì º¸¾Ò°í, ´ÙÀ½Àº Tag
Library Descriptor¸¦ º¸°Ú´Ù. TLD¸¦ Á¤ÀÇÇÒ¶§´Â °³¹ßÇÑ Custom TagÀÇ
attributeµéÀÌ ¹Ýµå½Ã ÇÊ¿äÇÑ°¡¸¦ »ý°¢ÇØ º¸¸éµÈ´Ù. InvokeEJBTagÀÇ url,
context´Â °³¹ßµÈ ¼Ò½ºÀÇ defualt °ªÀ» ÀÌ¿ëÇصµ µÇ±â¶§¹®¿¡ ¹Ýµå½Ã ÇÊ¿äÇÑ
attribute´Â ¾Æ´Ï´Ù. ±×¸®°í, id, typeÀº return object¿¡ ´ëÇÑ »çÇ× ÀÓÀ¸·Î
À̰͵µ ¹Ýµå½Ã ÇÊ¿äÇÑ °ÍÀº ¾Æ´Ï´Ù. °á±¹, TLD´Â ´ÙÀ½°ú °°´Ù.
#
javapattern-taglib_1_0.tld file
<?xml version="1.0" encoding="euc-kr" ?>
<!DOCTYPE taglib
PUBLIC "-//Sun Microsystemes, Inc.//DTD JSP Tag Library 1.1//EN"
"http://java.sun.com/j2ee/dtds/web-jsptaglibrary_1_1.dtd">
<taglib>
<tlibversion>1.0</tlibversion>
<jspversion>1.1</jspversion>
<shortname>javapattern</shortname>
<uri></uri>
<info>Jeon HongSeong tag library</info>
<tag>
<name>invokeEjb</name>
<tagclass>com.javapattern.servlet.jsp.InvokeEJBTag</tagclass>
<teiclass>com.javapattern.servlet.jsp.InvokeEJBTEI</teiclass>
<bodycontent>JSP</bodycontent>
<info>invokeEjb Tag Handler</info>
<attribute>
<name>id</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>type</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>jndiName</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>context</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>context</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>url</name>
<required>false</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>method</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
<tag>
<name>param</name>
<tagclass>com.javapattern.servlet.jsp.InvokeParamTag</tagclass>
<teiclass>com.javapattern.servlet.jsp.InvokeParamTEI</teiclass>
<bodycontent>empty</bodycontent>
<info>invokeEjb ParamTag Handler</info>
<attribute>
<name>name</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
<attribute>
<name>value</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
</taglib> |
´ÙÀ½Àº InvokeEJBTag¿¡ ´ëÇÑ °£´ÜÇÑ JSP ¿¹Á¦ ¼Ò½ºÀÔ´Ï´Ù.
<%@ taglib uri="/WEB-INF/tld/javapattern-taglib_1_0.tld" prefix="javapattern" %>
<% String name="HongSeong"; %>
<javapattern:invokeEjb jndiName="MyEcho"
url="t3://127.0.0.1:7001/"
method="sayEcho"
id="result"
type="java.lang.String">
<javapattern:param name="java.lang.String" value="<%= name %>"/>
</javapattern:invokeEjb>
<b>
<%= result %>
</b>
|
Áö±Ý±îÁö EJB Statless Session BeanÀÇ Business
methodÀÇ È£Ãâ¿¡ ´ëÇÑ ÄÚµå ·ÎÁ÷À» EncapsulationÇÔÀ¸·Î½á, EJB È£Ãâ¹æ¹ýÀÇ ÀÏ°ü¼ºÀ»
Á¦°øÇÏ°í, EJB system°úÀÇ depedency¸¦ ÁÙÀÓÀ¸·Î½á, °³¹ßÀÚÀÇ roleÀ» ¸íÈ®ÀÌ ³ª´¼ö
ÀÖ´Ù´Â ÀåÁ¡À» Á¦°øÇÏ´Â Custom Tag Library¿¡ ´ëÇØ »ìÆì ºÃ´Ù. ÀÌ
InvokeEJBTag¸¦ Á» °³¼± ÇÑ´Ù¸é, EJBObject¿¡ ´ëÇÑ Handle °´Ã¼¸¦
CachingÇÏ´Â ±â´ÉÀ» Ãß°¡ÇÒ¼ö ÀÖ°Ú´Ù. EJB Business method¸¦ ¸Å¹ø È£ÃâÇÒ¶§¸¶´Ù
JNDI Naming service¿¡ access ÇÏ´Â ÀÛ¾÷À» ÁÙÀÓÀ¸·Î½á, performance¸¦
°³¼±ÇÒ¼ö ÀÖ°ÚÁÒ.
2001.08.03 written by
Jeon HongSeong |