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HttpContext (HttpComponents Core 4.2.2 API)
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org.apache.http.protocol</FONT>
<BR>
Interface HttpContext</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../org/apache/http/protocol/BasicHttpContext.html" title="class in org.apache.http.protocol">BasicHttpContext</A>, <A HREF="../../../../org/apache/http/protocol/DefaultedHttpContext.html" title="class in org.apache.http.protocol">DefaultedHttpContext</A>, <A HREF="../../../../org/apache/http/protocol/SyncBasicHttpContext.html" title="class in org.apache.http.protocol">SyncBasicHttpContext</A></DD>
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<DT><PRE>public interface <B>HttpContext</B></DL>
</PRE>
<P>
HttpContext represents execution state of an HTTP process. It is a structure
that can be used to map an attribute name to an attribute value. Internally
HTTP context implementations are usually backed by a <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/util/HashMap.html" title="class or interface in java.util"><CODE>HashMap</CODE></A>.
<p>
The primary purpose of the HTTP context is to facilitate information sharing
among various logically related components. HTTP context can be used
to store a processing state for one message or several consecutive messages.
Multiple logically related messages can participate in a logical session
if the same context is reused between consecutive messages.
<P>
<P>
<DL>
<DT><B>Since:</B></DT>
<DD>4.0</DD>
</DL>
<HR>
<P>
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<CODE>static&nbsp;<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/http/protocol/HttpContext.html#RESERVED_PREFIX">RESERVED_PREFIX</A></B></CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The prefix reserved for use by HTTP components.</TD>
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<CODE>&nbsp;<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/http/protocol/HttpContext.html#getAttribute(java.lang.String)">getAttribute</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id)</CODE>
<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Obtains attribute with the given name.</TD>
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<CODE>&nbsp;<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/http/protocol/HttpContext.html#removeAttribute(java.lang.String)">removeAttribute</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id)</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Removes attribute with the given name from the context.</TD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../org/apache/http/protocol/HttpContext.html#setAttribute(java.lang.String, java.lang.Object)">setAttribute</A></B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id,
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;obj)</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets value of the attribute with the given name.</TD>
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<A NAME="RESERVED_PREFIX"><!-- --></A><H3>
RESERVED_PREFIX</H3>
<PRE>
static final <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A> <B>RESERVED_PREFIX</B></PRE>
<DL>
<DD>The prefix reserved for use by HTTP components. "http."
<P>
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<DT><B>See Also:</B><DD><A HREF="../../../../constant-values.html#org.apache.http.protocol.HttpContext.RESERVED_PREFIX">Constant Field Values</A></DL>
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<A NAME="getAttribute(java.lang.String)"><!-- --></A><H3>
getAttribute</H3>
<PRE>
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>getAttribute</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id)</PRE>
<DL>
<DD>Obtains attribute with the given name.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the attribute name.
<DT><B>Returns:</B><DD>attribute value, or <code>null</code> if not set.</DL>
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</DL>
<HR>
<A NAME="setAttribute(java.lang.String, java.lang.Object)"><!-- --></A><H3>
setAttribute</H3>
<PRE>
void <B>setAttribute</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id,
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;obj)</PRE>
<DL>
<DD>Sets value of the attribute with the given name.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the attribute name.<DD><CODE>obj</CODE> - the attribute value.</DL>
</DD>
</DL>
<HR>
<A NAME="removeAttribute(java.lang.String)"><!-- --></A><H3>
removeAttribute</H3>
<PRE>
<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <B>removeAttribute</B>(<A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;id)</PRE>
<DL>
<DD>Removes attribute with the given name from the context.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>id</CODE> - the attribute name.
<DT><B>Returns:</B><DD>attribute value, or <code>null</code> if not set.</DL>
</DD>
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