pt.moredata.taglibs
Class AbstractTag

java.lang.Object
  javax.servlet.jsp.tagext.TagSupport
      pt.moredata.taglibs.AbstractTag

All Implemented Interfaces:

javax.servlet.jsp.tagext.IterationTag, javax.servlet.jsp.tagext.JspTag, java.io.Serializable, javax.servlet.jsp.tagext.Tag, javax.servlet.jsp.tagext.TryCatchFinally

Direct Known Subclasses:

AbstractProtectTag, ContentTag, DAOAbstractTag, FormTag

public class AbstractTag

extends javax.servlet.jsp.tagext.TagSupport

implements javax.servlet.jsp.tagext.TryCatchFinally

AbstractTag.java Company MoreData

Version:

$Revision: 1.2 $

Author:

pcarmo

See Also:

Serialized Form

Field Summary

protected java.lang.String

uri URI da pagina que fez o pedido.

Fields inherited from class javax.servlet.jsp.tagext.TagSupport

id, pageContext

Fields inherited from interface javax.servlet.jsp.tagext.IterationTag

EVAL_BODY_AGAIN

Fields inherited from interface javax.servlet.jsp.tagext.Tag

EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE

Constructor Summary

AbstractTag()
Creates a new instance of AbstractTag

Method Summary

void	doCatch(java.lang.Throwable t) Invoked if a Throwable occurs while evaluating the BODY inside a tag or in any of the following methods: Tag.doStartTag(), Tag.doEndTag(), IterationTag.doAfterBody() and BodyTag.doInitBody().
void	doFinally() Invoked in all cases after doEndTag() for any class implementing Tag, IterationTag or BodyTag.
protected javax.servlet.jsp.tagext.TagSupport	getAncestor(java.lang.String className) Convenience method for finding ancestor names with a specific class name.
protected static javax.servlet.jsp.tagext.TagSupport	getAncestor(javax.servlet.jsp.tagext.Tag childTag, java.lang.String parentTagClassName) Convenience method for finding ancestor names with a specific class name.
protected java.lang.String	getUri() Le e devolve o uri da pagina.
protected java.lang.Object	getVarFromJspPage(java.lang.String varName) Devolve um objecto de uma pagina dado o nome do objecto.
protected void	readUri() Le o uri da pagina.
protected void	setVarInJspPage(java.lang.String varName, java.lang.Object var)

Methods inherited from class javax.servlet.jsp.tagext.TagSupport

doAfterBody, doEndTag, doStartTag, findAncestorWithClass, getId, getParent, getValue, getValues, release, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

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

Field Detail

uri

protected java.lang.String uri

URI da pagina que fez o pedido.

Constructor Detail

AbstractTag

public AbstractTag()

Creates a new instance of AbstractTag

Method Detail

getVarFromJspPage

protected java.lang.Object getVarFromJspPage(java.lang.String varName)
                                      throws javax.servlet.jsp.JspTagException

Devolve um objecto de uma pagina dado o nome do objecto. Este metodo assume que existe um objecto guardado ao nivel do pageContext.

Parameters:

varName - O nome da variavel.

Throws:

javax.servlet.jsp.JspTagException - Se o objecto nao for encontrado.

setVarInJspPage

protected void setVarInJspPage(java.lang.String varName,
                               java.lang.Object var)

getAncestor

protected javax.servlet.jsp.tagext.TagSupport getAncestor(java.lang.String className)
                                                   throws javax.servlet.jsp.JspTagException

Convenience method for finding ancestor names with a specific class name.

Throws:

javax.servlet.jsp.JspTagException

getAncestor

protected static javax.servlet.jsp.tagext.TagSupport getAncestor(javax.servlet.jsp.tagext.Tag childTag,
                                                                 java.lang.String parentTagClassName)
                                                          throws javax.servlet.jsp.JspTagException

Convenience method for finding ancestor names with a specific class name.

Parameters:

parentTagClassName - Nome da classe antecessora.

Throws:

javax.servlet.jsp.JspTagException

readUri

protected void readUri()

Le o uri da pagina.

getUri

protected java.lang.String getUri()

Le e devolve o uri da pagina.

doCatch

public void doCatch(java.lang.Throwable t)
             throws java.lang.Throwable

Invoked if a Throwable occurs while evaluating the BODY inside a tag or in any of the following methods: Tag.doStartTag(), Tag.doEndTag(), IterationTag.doAfterBody() and BodyTag.doInitBody(). This method is not invoked if the Throwable occurs during one of the setter methods. This method may throw an exception (the same or a new one) that will be propagated further up the nest chain. If an exception is thrown, doFinally() will be invoked. This method is intended to be used to respond to an exceptional condition.

Specified by:

doCatch in interface javax.servlet.jsp.tagext.TryCatchFinally

Parameters:

t - - The throwable exception navigating through this tag.

Throws:

java.lang.Throwable - - if the exception is to be rethrown further up the nest chain.

doFinally

public void doFinally()

Invoked in all cases after doEndTag() for any class implementing Tag, IterationTag or BodyTag. This method is invoked even if an exception has occurred in the BODY of the tag, or in any of the following methods: Tag.doStartTag(), Tag.doEndTag(), IterationTag.doAfterBody() and BodyTag.doInitBody(). This method is not invoked if the Throwable occurs during one of the setter methods. This method should not throw an Exception. This method is intended to maintain per-invocation data integrity and resource management actions.

Specified by:

doFinally in interface javax.servlet.jsp.tagext.TryCatchFinally