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OutputFilterBase
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SUMMARY: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD>
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com.lowagie.servlets</FONT>
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Class OutputFilterBase</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">java.lang.Object</A>
|
+--<B>com.lowagie.servlets.OutputFilterBase</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD>javax.servlet.Filter</DD>
</DL>
<DL>
<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../com/lowagie/servlets/ITextOutputFilter.html">ITextOutputFilter</A></DD>
</DL>
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<DL>
<DT>public abstract class <B>OutputFilterBase</B><DT>extends <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A><DT>implements javax.servlet.Filter</DL>
<P>
<p>Base filter to enable filtering on the output of a resource, instead of the input. This filter calls the filter chain before calling the <p>perform()</p> method, making the output of the filter chain available to said method.</p>
<P>
<P>
<DL>
<DT><B>Author:</B><DD>Marcelo Vanzin</DD></DD></DL>
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<P>
<!-- ======== NESTED CLASS SUMMARY ======== -->
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<CODE>static <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#EXCEPTION_KEY">EXCEPTION_KEY</A></B></CODE>
<BR>
Where the exception caught when executing <i>perform()</i> is stored in the request (so that it can be used on customized error pages).</TD>
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<CODE>protected javax.servlet.FilterConfig</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#fConfig">fConfig</A></B></CODE>
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<CODE>private static <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#FILTER_APPLIED">FILTER_APPLIED</A></B></CODE>
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<CODE>static <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#PREVENT_FILTER">PREVENT_FILTER</A></B></CODE>
<BR>
Key where to store an object in the request if you do not want the output filter applied on this request.</TD>
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<B>Constructor Summary</B></FONT></TD>
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<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#OutputFilterBase()">OutputFilterBase</A></B>()</CODE>
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<B>Method Summary</B></FONT></TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#destroy()">destroy</A></B>()</CODE>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)">doFilter</A></B>(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, javax.servlet.FilterChain chain)</CODE>
<BR>
Prepares the filter before calling the filter chain. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#dump(com.lowagie.servlets.BufferedResponse, javax.servlet.ServletResponse)">dump</A></B>(<A HREF="../../../com/lowagie/servlets/BufferedResponse.html">BufferedResponse</A> data, javax.servlet.ServletResponse res)</CODE>
<BR>
Dumps the contents of the passed BufferedResponse to the ServletResponse. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#dump(java.io.InputStream, javax.servlet.ServletResponse)">dump</A></B>(<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/io/InputStream.html">InputStream</A> in, javax.servlet.ServletResponse res)</CODE>
<BR>
Dumps the data from the InputStream passed to the ServletResponse's OutputStream.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE> javax.servlet.FilterConfig</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#getFilterConfig()">getFilterConfig</A></B>()</CODE>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#init(javax.servlet.FilterConfig)">init</A></B>(javax.servlet.FilterConfig filterConfig)</CODE>
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<CODE>protected abstract void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#perform(javax.servlet.ServletRequest, javax.servlet.ServletResponse, java.io.InputStream)">perform</A></B>(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/io/InputStream.html">InputStream</A> data)</CODE>
<BR>
This method should contain the logic to manipulate the data coming from the resources called by the filter chain and send the data to the response object received.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected javax.servlet.ServletRequest</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#prepareRequest(javax.servlet.ServletRequest)">prepareRequest</A></B>(javax.servlet.ServletRequest request)</CODE>
<BR>
This method is called before executing the filter chain. </TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected <A HREF="../../../com/lowagie/servlets/BufferedResponse.html">BufferedResponse</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#prepareResponse(javax.servlet.ServletRequest, javax.servlet.ServletResponse)">prepareResponse</A></B>(javax.servlet.ServletRequest request, javax.servlet.ServletResponse response)</CODE>
<BR>
This method is called before executing the filter chain, and should return a BufferedResponse objeto to be sent to the chain. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>protected void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#sendError(javax.servlet.ServletRequest, javax.servlet.http.HttpServletResponse, java.lang.Throwable)">sendError</A></B>(javax.servlet.ServletRequest req, javax.servlet.http.HttpServletResponse res, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Throwable.html">Throwable</A> t)</CODE>
<BR>
Stores the throwable in the EXCEPTION_KEY attribute of the request and sends an "Internal Server Error" to the response with the message from the error.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../com/lowagie/servlets/OutputFilterBase.html#setFilterConfig(javax.servlet.FilterConfig)">setFilterConfig</A></B>(javax.servlet.FilterConfig filterConfig)</CODE>
<BR>
</TD>
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<TD><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#clone()">clone</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#equals(java.lang.Object)">equals</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#finalize()">finalize</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#getClass()">getClass</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#hashCode()">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#notify()">notify</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#notifyAll()">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#toString()">toString</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait()">wait</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait(long)">wait</A>, <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/Object.html#wait(long, int)">wait</A></CODE></TD>
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<P>
<!-- ============ FIELD DETAIL =========== -->
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<TD COLSPAN=1><FONT SIZE="+2">
<B>Field Detail</B></FONT></TD>
</TR>
</TABLE>
<A NAME="FILTER_APPLIED"><!-- --></A><H3>
FILTER_APPLIED</H3>
<PRE>
private static final <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html">String</A> <B>FILTER_APPLIED</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#com.lowagie.servlets.OutputFilterBase.FILTER_APPLIED">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="PREVENT_FILTER"><!-- --></A><H3>
PREVENT_FILTER</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.3/docs/api/java/lang/String.html">String</A> <B>PREVENT_FILTER</B></PRE>
<DL>
<DD>Key where to store an object in the request if you do not want the output filter applied on this request.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../constant-values.html#com.lowagie.servlets.OutputFilterBase.PREVENT_FILTER">Constant Field Values</A></DL>
</DL>
<HR>
<A NAME="EXCEPTION_KEY"><!-- --></A><H3>
EXCEPTION_KEY</H3>
<PRE>
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