The <portal-core/> tags are used to provide portal core
functionality such as entering the main render flow as well as URL-related
aspects of the page.
The following table provides a brief description of each tag.
Note: Do not use portal tags in portlet JSPs. The following tags are
only for use in theme and skin JSPs.
Table 1. Descriptions of <portal-core/> tagsTag |
Description |
<portal-core:cacheProxyUrl/> |
Creates a URL to the caching proxy servlet. Note: This tag is deprecated for IBM® WebSphere® Portal 8.0.
|
<portal-core:constants/> |
Makes the <%= wpsBaseURL %> and <%= wpsDocURL %> constants
available to the page. |
<portal-core:defineObjects/> |
Defines a set of objects which can be used later
on (for example, escapeXmlWriter). |
<portal-core:pageRender/> |
Used in the Home screen to render the content of the selected
page. Do not confuse this with the <portal-core:pageRender/> tag
deprecated in V4.2. |
<portal-core:screenRender/> |
Starts the rendering of the screen. This tag should be used
only in theme JSPs. |
<portal-core:stateBase/> |
Stores a base URL which can be used instead of full, newly-coded
URLs on each occurrence of a URL in the markup. This tag should occur
only in the header section of the markup, which is provided by theme
JSPs. |
Detailed descriptions of the <portal-core/>
JSP tags
The following section provides detailed descriptions
of the <portal-core/> JSP tags:
- <portal-core:cacheProxyUrl forwardurl="url_string"/>
- Creates a URL to the caching proxy servlet. The URL created is
fully cacheable and includes information about the requesting client.
The CC/PP client profile is used for gathering information about the
client for the URL. The purpose of this tag is to link .CSS files
into the JSP. The tag has one attribute.
Note: For security reasons,
the cache proxy servlet will only serve URLs pointing to resources
located in the themes, skins, and screens directories. This makes
all resources underneath these directories public. Also, any URLs
containing the ".." characters will not be served.
Attributes
- forwardurl
- Specifies the address to the file you want to be sent to the caching
proxy servlet. This attribute can be set by passing in a String or
a URL object.
The following code example uses this tag to link
a CSS file in a JSP:
<link href="<portal-core:cacheProxyUrl
forwardurl="<portal-logic:urlFindInTheme type="css"
file="styles.jsp"/>"/>">
- <portal-core:constants/>
- Makes the following constants available to the page:
- <portal-core:defineObjects/>
- Defines a set of objects which can be used later (for example, escapeXmlWriter).
Makes the following constants available to the page:
- <%= escapeXmlWriter %>
This writer can be used
to stream out URLs. The writer makes sure that the URL is written
out in XML compliant representation:
<portal-navigation:urlGeneration contentNode="wps.Links" portletMode="view">
<c:set var="title"><portal-fmt:text bundle="nls.bundle" key="link" /></c:set>
<a href="<% wpsURL.write(escapeXmlWriter); %>"><c-rt:out value='${title}' escapeXml='true' /></a>
</portal-navigation:urlGeneration>
- <portal-core:pageRender/>
- Used in the Home screen to render the content of the selected
page. Do not confuse this with the <portal-core:pageRender/>
tag deprecated in V4.2. This tag renders the portal page without the
navigation. When this tag is called, all pages that are available
for the user are determined.
- <portal-core:screenRender/>
- Renders the current screen.
Types of screens include Home (default), Login, and Error. This tag
can only be used once in the portal. This tag should be used only
in theme JSPs.
Example
This part of the
Default.jsp portlets.
<div id="FLYParent">
<%@ include file="./banner.jspf" %>
<portal-logic:if portletSolo="no">
<%@ include file="./topNav.jspf" %>
<%@ include file="./sideNav.jspf" %>
<portal-logic:if/>
<a name="wpsMainContent">
<%-- Call the portal engine command to render the portlets for this page --%>
<div id="mainContent"><portal-core:screenRender/></div>
<portal-logic:if portletSolo="no">
<%@ include file="./footer.jspf" %>
<%@ include file="./flyout.jspf" %>
</portal-logic:if>
<portal-logic:if loggedIn="yes">
</div>
- <portal-core:stateBase/>
- Stores a base URL which can be used instead of
full, newly-coded URLs on each occurrence of a URL in the markup.
This enables shorter URLs and can improve the page serving performance.
This tag should occur only in the header section of the markup - it
is not allowed to occur outside of the header section. Theme JSPs
are responsible for the header section, using Head.jsp by
default.