com.devsphere.xml.taglib.output.tag
Class Attribute

java.lang.Object
  |
  +--javax.servlet.jsp.tagext.TagSupport
        |
        +--javax.servlet.jsp.tagext.BodyTagSupport
              |
              +--com.devsphere.xml.taglib.support.tag.CommonSupport
                    |
                    +--com.devsphere.xml.taglib.output.tag.OutputSupport
                          |
                          +--com.devsphere.xml.taglib.output.tag.Attribute

All Implemented Interfaces:

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

public class Attribute

extends OutputSupport

Handler for the <o:attribute> tag that adds an attribute to a variable exported by <o:attributes>.

See Also:

Serialized Form

Field Summary

Fields inherited from class com.devsphere.xml.taglib.output.tag.OutputSupport

ancestor, previousOut, serializer

Fields inherited from class com.devsphere.xml.taglib.support.tag.CommonSupport

cachedDebug, cachedLogger, DEBUG_ATTR, DEFAULT_DEBUG, DEFAULT_RESTORE_VALUE, DEFAULT_SCOPE, LOGGER_ATTR, originalValues

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

bodyContent

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

id, pageContext

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

EVAL_BODY_BUFFERED, EVAL_BODY_TAG

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

Attribute()

Method Summary

protected void	endOutput() Adds an attribute to the variable exported by the enclosing <o:attributes> tag.
protected java.util.List	getAllowedAncestors() Returns the list of names of the tags that may contain the tag that is handled by this class.
java.lang.String	getTagName() Returns the name of the handled tag
protected void	init() Initializes the fields of this tag handler.
void	setName(java.lang.String nameExpr) Sets the attribute name.
void	setValue(java.lang.String valueExpr) Sets the attribute value.
protected boolean	shouldBufferContent() Returns false if the value attribute is present.
protected boolean	shouldIgnoreContent() Returns true if the value attribute is present.
protected void	startOutput() Does nothing.

Methods inherited from class com.devsphere.xml.taglib.output.tag.OutputSupport

doEndTag, doStartTag, emptyComment, initOutput

Methods inherited from class com.devsphere.xml.taglib.support.tag.CommonSupport

checkVarName, checkVarScope, doCatch, doFinally, eval, evalBoolean, evalDouble, evalInt, evalString, export, export, getDebug, getLogger, log, log, log, restore, validate

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

doAfterBody, doInitBody, getBodyContent, getPreviousOut, release, setBodyContent

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

findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue

Methods inherited from class java.lang.Object

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

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

getParent, setPageContext, setParent

Constructor Detail

Attribute

public Attribute()

Method Detail

init

protected void init()

Initializes the fields of this tag handler.

Overrides:

init in class OutputSupport

getTagName

public java.lang.String getTagName()

Returns the name of the handled tag

Specified by:

getTagName in class CommonSupport

Returns:

the name of the handled tag

getAllowedAncestors

protected java.util.List getAllowedAncestors()

Returns the list of names of the tags that may contain the tag that is handled by this class.

Specified by:

getAllowedAncestors in class CommonSupport

Returns:

the list of names of the allowed ancestor tags or null if the tag context doesn't matter.

setName

public void setName(java.lang.String nameExpr)
             throws javax.servlet.jsp.JspException

Sets the attribute name.

Parameters:

nameExpr - the expression that will be evaluated

Throws:

javax.servlet.jsp.JspException - to signal any error that might occur

setValue

public void setValue(java.lang.String valueExpr)
              throws javax.servlet.jsp.JspException

Sets the attribute value.

Parameters:

valueExpr - the expression that will be evaluated

Throws:

javax.servlet.jsp.JspException - to signal any error that might occur

shouldIgnoreContent

protected boolean shouldIgnoreContent()

Returns true if the value attribute is present.

Overrides:

shouldIgnoreContent in class OutputSupport

Returns:

a flag indicating whether the body content of this tag should be ignored or evaluated

shouldBufferContent

protected boolean shouldBufferContent()

Returns false if the value attribute is present.

Overrides:

shouldBufferContent in class OutputSupport

Returns:

a flag indicating whether the body content of this tag should be ignored or evaluated

startOutput

protected void startOutput()
                    throws javax.servlet.jsp.JspException,
                           org.xml.sax.SAXException

Does nothing.

Specified by:

startOutput in class OutputSupport

Throws:

javax.servlet.jsp.JspException - to signal an error

org.xml.sax.SAXException - to signal an error

endOutput

protected void endOutput()
                  throws javax.servlet.jsp.JspException,
                         org.xml.sax.SAXException

Adds an attribute to the variable exported by the enclosing <o:attributes> tag.

Specified by:

endOutput in class OutputSupport

Throws:

javax.servlet.jsp.JspException - to signal an error

org.xml.sax.SAXException - to signal an error