pt.moredata.connection.taglibs
Class AbstractIfTag

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

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:

DoIfLoginErrorTag, DoIfLoginTag, DoIfNotLoginTag

public abstract class AbstractIfTag

extends javax.servlet.jsp.tagext.TagSupport

implements javax.servlet.jsp.tagext.TryCatchFinally

AbstractIfTag.java Implementacao abstracta de uma tag que implementa um IF. A verificacao da condicao do if devera estar implementada numa subclasse. Company MoreData

Version:

$Revision: 1.4 $

Author:

pcarmo

See Also:

Serialized Form

Field Summary

protected DataSource	_dataSource DataSource criado pela tag CreateDataEntryTag.
protected javax.servlet.http.HttpSession	_session Objecto de sessao.

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

AbstractIfTag()

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().
int	doEndTag() Processa o fim da tag.
void	doFinally() Invoked in all cases after doEndTag() for any class implementing Tag, IterationTag or BodyTag.
int	doStartTag() Processa o inicio da tag.
protected abstract boolean	includeBodyTag() Verifica se o conteudo da tag devera ser incluido ou nao

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

doAfterBody, 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

_dataSource

protected DataSource _dataSource

DataSource criado pela tag CreateDataEntryTag.

_session

protected javax.servlet.http.HttpSession _session

Objecto de sessao.

Constructor Detail

AbstractIfTag

public AbstractIfTag()

Method Detail

includeBodyTag

protected abstract boolean includeBodyTag()

Verifica se o conteudo da tag devera ser incluido ou nao

doStartTag

public int doStartTag()
               throws javax.servlet.jsp.JspTagException

Processa o inicio da tag.

Specified by:

doStartTag in interface javax.servlet.jsp.tagext.Tag

Returns:

A accao que deve ser tomada pelo servidor de .jsp apos ler o inicio da tag.

Throws:

javax.servlet.jsp.JspTagException

doEndTag

public int doEndTag()
             throws javax.servlet.jsp.JspTagException

Processa o fim da tag.

Specified by:

doEndTag in interface javax.servlet.jsp.tagext.Tag

Returns:

a accao que deve ser tomada pelo servidor de .jsp apos ler a tag.

Throws:

javax.servlet.jsp.JspTagException

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