jspcontext.html

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<DL>
<DD>Remove the object reference associated with the specified name
 in the given scope.  Does nothing if there is no such object.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - The name of the object to remove.<DD><CODE>scope</CODE> - The scope where to look.
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if the scope is invalid
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the scope is 
     PageContext.SESSION_SCOPE but the page that was requested
     does not participate in a session or the session has been
     invalidated.
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/NullPointerException.html" title="class or interface in java.lang">NullPointerException</A></CODE> - if the name is null</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributesScope(java.lang.String)"><!-- --></A><H3>
getAttributesScope</H3>
<PRE>
public abstract int <B>getAttributesScope</B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;name)</PRE>
<DL>
<DD>Get the scope where a given attribute is defined.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>name</CODE> - the name of the attribute to return the scope for
<DT><B>Returns:</B><DD>the scope of the object associated with the name specified or 0
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/NullPointerException.html" title="class or interface in java.lang">NullPointerException</A></CODE> - if the name is null</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeNamesInScope(int)"><!-- --></A><H3>
getAttributeNamesInScope</H3>
<PRE>
public abstract <A HREF="http://java.sun.com/j2se/1.5/docs/api/java/util/Enumeration.html" title="class or interface in java.util">Enumeration</A>&lt;<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&gt; <B>getAttributeNamesInScope</B>(int&nbsp;scope)</PRE>
<DL>
<DD>Enumerate all the attributes in a given scope.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>scope</CODE> - the scope to enumerate all the attributes for
<DT><B>Returns:</B><DD>an enumeration of names (java.lang.String) of all the 
     attributes the specified scope
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/IllegalArgumentException.html" title="class or interface in java.lang">IllegalArgumentException</A></CODE> - if the scope is invalid
<DD><CODE><A HREF="http://java.sun.com/j2se/1.5/docs/api/java/lang/IllegalStateException.html" title="class or interface in java.lang">IllegalStateException</A></CODE> - if the scope is 
     PageContext.SESSION_SCOPE but the page that was requested
     does not participate in a session or the session has been
     invalidated.</DL>
</DD>
</DL>
<HR>

<A NAME="getOut()"><!-- --></A><H3>
getOut</H3>
<PRE>
public abstract <A HREF="../../../javax/servlet/jsp/JspWriter.html" title="class in javax.servlet.jsp">JspWriter</A> <B>getOut</B>()</PRE>
<DL>
<DD>The current value of the out object (a JspWriter).
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the current JspWriter stream being used for client response</DL>
</DD>
</DL>
<HR>

<A NAME="getExpressionEvaluator()"><!-- --></A><H3>
getExpressionEvaluator</H3>
<PRE>
public abstract <A HREF="../../../javax/servlet/jsp/el/ExpressionEvaluator.html" title="class in javax.servlet.jsp.el">ExpressionEvaluator</A> <B>getExpressionEvaluator</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>As of JSP 2.1, replaced by
     <A HREF="../../../javax/servlet/jsp/JspApplicationContext.html#getExpressionFactory()"><CODE>JspApplicationContext.getExpressionFactory()</CODE></A></I>
<P>
<DD>Provides programmatic access to the ExpressionEvaluator.
 The JSP Container must return a valid instance of an 
 ExpressionEvaluator that can parse EL expressions.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A valid instance of an ExpressionEvaluator.<DT><B>Since:</B></DT>
  <DD>JSP 2.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getVariableResolver()"><!-- --></A><H3>
getVariableResolver</H3>
<PRE>
public abstract <A HREF="../../../javax/servlet/jsp/el/VariableResolver.html" title="interface in javax.servlet.jsp.el">VariableResolver</A> <B>getVariableResolver</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>As of JSP 2.1, replaced by <A HREF="../../../javax/el/ELContext.html#getELResolver()"><CODE>ELContext.getELResolver()</CODE></A>,
     which can be obtained by 
     <code>jspContext.getELContext().getELResolver()</code>.</I>
<P>
<DD>Returns an instance of a VariableResolver that provides access to the
 implicit objects specified in the JSP specification using this JspContext
 as the context object.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>A valid instance of a VariableResolver.<DT><B>Since:</B></DT>
  <DD>JSP 2.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getELContext()"><!-- --></A><H3>
getELContext</H3>
<PRE>
public abstract <A HREF="../../../javax/el/ELContext.html" title="class in javax.el">ELContext</A> <B>getELContext</B>()</PRE>
<DL>
<DD>Returns the <code>ELContext</code> associated with this 
 <code>JspContext</code>.

 <p>The <code>ELContext</code> is created lazily and is reused if 
 it already exists. There is a new <code>ELContext</code> for each
 <code>JspContext</code>.</p>

 <p>The <code>ELContext</code> must contain the <code>ELResolver</code>
 described in the JSP specification (and in the javadocs for
 <A HREF="../../../javax/servlet/jsp/JspApplicationContext.html#addELResolver(javax.el.ELResolver)"><CODE>JspApplicationContext.addELResolver(javax.el.ELResolver)</CODE></A>).</p>
<P>
<DD><DL>

<DT><B>Returns:</B><DD>The <code>ELContext</code> associated with this
     <code>JspContext</code>.<DT><B>Since:</B></DT>
  <DD>JSP 2.1</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="pushBody(java.io.Writer)"><!-- --></A><H3>
pushBody</H3>
<PRE>
public <A HREF="../../../javax/servlet/jsp/JspWriter.html" title="class in javax.servlet.jsp">JspWriter</A> <B>pushBody</B>(<A HREF="http://java.sun.com/j2se/1.5/docs/api/java/io/Writer.html" title="class or interface in java.io">Writer</A>&nbsp;writer)</PRE>
<DL>
<DD>Return a new JspWriter object that sends output to the
 provided Writer.  Saves the current "out" JspWriter,
 and updates the value of the "out" attribute in the
 page scope attribute namespace of the JspContext.
 <p>The returned JspWriter must implement all methods and
 behave as though it were unbuffered.  More specifically:
 <ul>
   <li>clear() must throw an IOException</li>
   <li>clearBuffer() does nothing</li>
   <li>getBufferSize() always returns 0</li>
   <li>getRemaining() always returns 0</li>
 </ul>
 </p>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>writer</CODE> - The Writer for the returned JspWriter to send
     output to.
<DT><B>Returns:</B><DD>a new JspWriter that writes to the given Writer.<DT><B>Since:</B></DT>
  <DD>JSP 2.0</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="popBody()"><!-- --></A><H3>
popBody</H3>
<PRE>
public <A HREF="../../../javax/servlet/jsp/JspWriter.html" title="class in javax.servlet.jsp">JspWriter</A> <B>popBody</B>()</PRE>
<DL>
<DD>Return the previous JspWriter "out" saved by the matching
 pushBody(), and update the value of the "out" attribute in
 the page scope attribute namespace of the JspContext.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the saved JspWriter.</DL>
</DD>
</DL>
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