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SignatureCalculator (Asynchronous Http Client 1.6.5 API)
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com.ning.http.client</FONT>
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Interface SignatureCalculator</H2>
<DL>
<DT><B>All Known Implementing Classes:</B> <DD><A HREF="../../../../com/ning/http/client/oauth/OAuthSignatureCalculator.html" title="class in com.ning.http.client.oauth">OAuthSignatureCalculator</A></DD>
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<DT><PRE>public interface <B>SignatureCalculator</B></DL>
</PRE>

<P>
Interface that allows injecting signature calculator into
 <A HREF="../../../../com/ning/http/client/RequestBuilder.html" title="class in com.ning.http.client"><CODE>RequestBuilder</CODE></A> so that signature calculation and inclusion can
 be added as a pluggable component.
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<DT><B>Since:</B></DT>
  <DD>1.1</DD>
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<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../com/ning/http/client/SignatureCalculator.html#calculateAndAddSignature(java.lang.String, com.ning.http.client.Request, com.ning.http.client.RequestBuilderBase)">calculateAndAddSignature</A></B>(java.lang.String&nbsp;url,
                         <A HREF="../../../../com/ning/http/client/Request.html" title="interface in com.ning.http.client">Request</A>&nbsp;request,
                         <A HREF="../../../../com/ning/http/client/RequestBuilderBase.html" title="class in com.ning.http.client">RequestBuilderBase</A>&lt;?&gt;&nbsp;requestBuilder)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Method called when <A HREF="../../../../com/ning/http/client/RequestBuilder.html#build()"><CODE>RequestBuilder.build()</CODE></A> method is called.</TD>
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<A NAME="calculateAndAddSignature(java.lang.String, com.ning.http.client.Request, com.ning.http.client.RequestBuilderBase)"><!-- --></A><H3>
calculateAndAddSignature</H3>
<PRE>
void <B>calculateAndAddSignature</B>(java.lang.String&nbsp;url,
                              <A HREF="../../../../com/ning/http/client/Request.html" title="interface in com.ning.http.client">Request</A>&nbsp;request,
                              <A HREF="../../../../com/ning/http/client/RequestBuilderBase.html" title="class in com.ning.http.client">RequestBuilderBase</A>&lt;?&gt;&nbsp;requestBuilder)</PRE>
<DL>
<DD>Method called when <A HREF="../../../../com/ning/http/client/RequestBuilder.html#build()"><CODE>RequestBuilder.build()</CODE></A> method is called.
 Should first calculate signature information and then modify request
 (using passed <A HREF="../../../../com/ning/http/client/RequestBuilder.html" title="class in com.ning.http.client"><CODE>RequestBuilder</CODE></A>) to add signature (usually as
 an HTTP header).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>requestBuilder</CODE> - builder that can be used to modify request, usually
   by adding header that includes calculated signature. Be sure NOT to
   call <A HREF="../../../../com/ning/http/client/RequestBuilder.html#build()"><CODE>RequestBuilder.build()</CODE></A> since this will cause infinite recursion<DD><CODE>request</CODE> - Request that is being built; needed to access content to
   be signed</DL>
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