org.apache.sling.scripting.jsp.util
Class TagUtil

java.lang.Object
  org.apache.sling.scripting.jsp.util.TagUtil

public final class TagUtil
extends java.lang.Object

The TagUtil class provides a series of utility methods which may be used by tag library implementations to access Component API specific objects and do other processing.

Method Summary

static org.apache.sling.api.SlingHttpServletRequest	getRequest(javax.servlet.jsp.PageContext pageContext)
static org.apache.sling.api.SlingHttpServletResponse	getResponse(javax.servlet.jsp.PageContext pageContext)
static java.lang.Throwable	getRootCause(javax.servlet.ServletException e) Unwrap a component exception to get the true root cause of an exception
static void	log(org.slf4j.Logger log, javax.servlet.jsp.PageContext pageContext, java.lang.String message, java.lang.Throwable t) Log an INFO message to the given logger with context information from the pageContext.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

log

public static void log(org.slf4j.Logger log,
                       javax.servlet.jsp.PageContext pageContext,
                       java.lang.String message,
                       java.lang.Throwable t)

Log an INFO message to the given logger with context information from the pageContext.

Parameters:

log - The SLF4J Logger to use for writing the message.

pageContext - The JSP page context providing contextual information for the log message.

message - The message to log. If this is null, the message of the exception is taken, unless the expression is alos null, in which case this method just logs nothing.

t - The exception to be logged alongside the message. This may be null. If this is a ServletException it is unwrapped by the getRootCause(ServletException) method before being used.

getRootCause

public static java.lang.Throwable getRootCause(javax.servlet.ServletException e)

Unwrap a component exception to get the true root cause of an exception

getRequest

public static org.apache.sling.api.SlingHttpServletRequest getRequest(javax.servlet.jsp.PageContext pageContext)

getResponse

public static org.apache.sling.api.SlingHttpServletResponse getResponse(javax.servlet.jsp.PageContext pageContext)