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java.lang.Objectjavax.servlet.jsp.tagext.TagSupport
org.apache.myfaces.trinidadinternal.taglib.AttributeTag
public class AttributeTag
Tag implementation that adds an attribute with a specified name and value to the component whose tag it is nested inside, if the component does not already contain an attribute with the same name. This tag creates no output to the page currently being created.
This tag differs from the JSF f:attribute tag in that when the value attribute is bound to an EL expression, the EL expression is attached to the component as a value binding for later evaluation (unlike the JSF f:attribute tag which evaluates the expression immediately as discussed in this JSR127 bug). One other minor modification is that the name attribute cannot be EL-bound.
Field Summary |
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Fields inherited from class javax.servlet.jsp.tagext.TagSupport |
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id, pageContext |
Fields inherited from interface javax.servlet.jsp.tagext.IterationTag |
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EVAL_BODY_AGAIN |
Fields inherited from interface javax.servlet.jsp.tagext.Tag |
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EVAL_BODY_INCLUDE, EVAL_PAGE, SKIP_BODY, SKIP_PAGE |
Constructor Summary | |
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AttributeTag()
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Method Summary | |
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int |
doStartTag()
Register the specified attribute name and value with the UIComponent instance associated with our most immediately
surrounding UIComponentTag instance, if this UIComponent
does not already have a value for the specified attribute name. |
void |
release()
Release references to any acquired resources. |
void |
setName(java.lang.String name)
Set the attribute name. |
void |
setValue(java.lang.String value)
Set the attribute value. |
Methods inherited from class javax.servlet.jsp.tagext.TagSupport |
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doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AttributeTag()
Method Detail |
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public void setName(java.lang.String name)
Set the attribute name.
name
- The new attribute namepublic void setValue(java.lang.String value)
Set the attribute value.
value
- The new attribute valuepublic int doStartTag() throws javax.servlet.jsp.JspException
Register the specified attribute name and value with the
UIComponent
instance associated with our most immediately
surrounding UIComponentTag
instance, if this UIComponent
does not already have a value for the specified attribute name.
Note: When the value attribute is bound to an EL expression, the EL expression is attached to the component as a value binding for later evaluation (unlike the JSF f:attribute tag which evaluates the expression immediately).
doStartTag
in interface javax.servlet.jsp.tagext.Tag
doStartTag
in class javax.servlet.jsp.tagext.TagSupport
javax.servlet.jsp.JspException
- if a JSP error occurspublic void release()
Release references to any acquired resources.
release
in interface javax.servlet.jsp.tagext.Tag
release
in class javax.servlet.jsp.tagext.TagSupport
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