conditionaltagsupport.html

此文件是关于流的应用

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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../javax/servlet/jsp/jstl/core/ConditionalTagSupport.html#setScope(java.lang.String)">setScope</A></B>(java.lang.String&nbsp;scope)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the 'scope' attribute.</TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../javax/servlet/jsp/jstl/core/ConditionalTagSupport.html#setVar(java.lang.String)">setVar</A></B>(java.lang.String&nbsp;var)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the 'var' attribute.</TD>
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<TD><B>Methods inherited from class javax.servlet.jsp.tagext.TagSupport</B></TD>
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<TD><CODE>doAfterBody, doEndTag, findAncestorWithClass, getId, getParent, getValue, getValues, removeValue, setId, setPageContext, setParent, setValue</CODE></TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<B>Constructor Detail</B></FONT></TD>
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<A NAME="ConditionalTagSupport()"><!-- --></A><H3>
ConditionalTagSupport</H3>
<PRE>
public <B>ConditionalTagSupport</B>()</PRE>
<DL>
<DD>Base constructor to initialize local state.  As with <tt>TagSupport</tt>,
 subclasses should not implement constructors with arguments, and
 no-argument constructors implemented by subclasses must call the 
 superclass constructor.
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<A NAME="condition()"><!-- --></A><H3>
condition</H3>
<PRE>
protected abstract boolean <B>condition</B>()
                              throws javax.servlet.jsp.JspTagException</PRE>
<DL>
<DD><p>Subclasses implement this method to compute the boolean result
 of the conditional action. This method is invoked once per tag invocation 
 by <tt>doStartTag()</tt>.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>a boolean representing the condition that a particular subclass
   uses to drive its conditional logic.
<DT><B>Throws:</B>
<DD><CODE>javax.servlet.jsp.JspTagException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="doStartTag()"><!-- --></A><H3>
doStartTag</H3>
<PRE>
public int <B>doStartTag</B>()
               throws javax.servlet.jsp.JspException</PRE>
<DL>
<DD>Includes its body if <tt>condition()</tt> evaluates to true.
<P>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>javax.servlet.jsp.JspException</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="release()"><!-- --></A><H3>
release</H3>
<PRE>
public void <B>release</B>()</PRE>
<DL>
<DD>Releases any resources this ConditionalTagSupport may have (or inherit).
<P>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setVar(java.lang.String)"><!-- --></A><H3>
setVar</H3>
<PRE>
public void <B>setVar</B>(java.lang.String&nbsp;var)</PRE>
<DL>
<DD>Sets the 'var' attribute.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>var</CODE> - Name of the exported scoped variable storing the result of
 <tt>condition()</tt>.</DL>
</DD>
</DL>
<HR>

<A NAME="setScope(java.lang.String)"><!-- --></A><H3>
setScope</H3>
<PRE>
public void <B>setScope</B>(java.lang.String&nbsp;scope)</PRE>
<DL>
<DD>Sets the 'scope' attribute.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>scope</CODE> - Scope of the 'var' attribute</DL>
</DD>
</DL>
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