filterencodingpreprocessor.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_13) on Tue Jun 05 11:36:31 GMT-05:00 2007 --><META http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><TITLE>FilterEncodingPreProcessor (Geotools 2.3.x 2.3.2 API)</TITLE><META NAME="keywords" CONTENT="org.geotools.xml.filter.FilterEncodingPreProcessor class"><META NAME="keywords" CONTENT="getFidFilter()"><META NAME="keywords" CONTENT="getFilter()"><META NAME="keywords" CONTENT="visit()"><META NAME="keywords" CONTENT="requiresPostProcessing()"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="FilterEncodingPreProcessor (Geotools 2.3.x 2.3.2 API)";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="class-use/FilterEncodingPreProcessor.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../org/geotools/xml/filter/FilterComplexTypes.Spatial_OperatorsType.html" title="class in org.geotools.xml.filter"><B>PREV CLASS</B></A> <A HREF="../../../../org/geotools/xml/filter/FilterOpsComplexTypes.html" title="class in org.geotools.xml.filter"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="FilterEncodingPreProcessor.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">org.geotools.xml.filter</FONT><BR>Class FilterEncodingPreProcessor</H2><PRE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A> <IMG SRC="../../../../resources/inherit.gif" ALT="extended by"><B>FilterEncodingPreProcessor</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></DD></DL><HR><DL><DT>public class <B>FilterEncodingPreProcessor</B><DT>extends <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A><DT>implements <A HREF="../../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></DL><P>Prepares a filter for xml encoded for interoperability with another system. It will behave differently depeding on the compliance level chosen. A new request will have to be made and the features will have to be tested again on the client side if there are any FidFilters in the filter. Consider the following to understand why: and { nullFilter or{ fidFilter nullFilter } } for strict it would throw an exception, for low it would be left alone, but for Medium it would end up as: and{ nullFilter nullFilter } and getFids() would return the fids in the fidFilter. So the final filter would (this is not standard but a common implementation) return the results of the and filter as well as all the features that match the fids. Which is more than the original filter would accept. The XML Document writer can operate at different levels of compliance. The geotools level is extremely flexible and forgiving. <p> All NOT(FidFilter) are changed to Filter.NONE. So make sure that the filter is processed again on the client with the original filter </p> For a description of the difference Compliance levels that can be used see <ul> <li><A HREF="../../../../org/geotools/xml/XMLHandlerHints.html#VALUE_FILTER_COMPLIANCE_LOW"><CODE>XMLHandlerHints.VALUE_FILTER_COMPLIANCE_LOW</CODE></A></li> <li><A HREF="../../../../org/geotools/xml/XMLHandlerHints.html#VALUE_FILTER_COMPLIANCE_MEDIUM"><CODE>XMLHandlerHints.VALUE_FILTER_COMPLIANCE_MEDIUM</CODE></A></li> <li><A HREF="../../../../org/geotools/xml/XMLHandlerHints.html#VALUE_FILTER_COMPLIANCE_HIGH"><CODE>XMLHandlerHints.VALUE_FILTER_COMPLIANCE_HIGH</CODE></A></li> </ul><P><P><DL><DT><B>Author:</B></DT> <DD>Jesse</DD></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#FilterEncodingPreProcessor(java.lang.Integer)">FilterEncodingPreProcessor</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Integer.html" title="class or interface in java.lang">Integer</A> complianceLevel)</CODE><BR> </TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/geotools/filter/FidFilter.html" title="interface in org.geotools.filter">FidFilter</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#getFidFilter()">getFidFilter</A></B>()</CODE><BR> Gets the fid filter that contains all the fids.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../../org/geotools/filter/Filter.html" title="interface in org.geotools.filter">Filter</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#getFilter()">getFilter</A></B>()</CODE><BR> Returns the filter that can be encoded.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#requiresPostProcessing()">requiresPostProcessing</A></B>()</CODE><BR> Returns true if the filter was one where the request to the server is more general than the actual filter. </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="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#visit(org.geotools.filter.AttributeExpression)">visit</A></B>(<A HREF="../../../../org/geotools/filter/AttributeExpression.html" title="interface in org.geotools.filter">AttributeExpression</A> expression)</CODE><BR> Called when accept is called on an attribute expression. </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="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#visit(org.geotools.filter.BetweenFilter)">visit</A></B>(<A HREF="../../../../org/geotools/filter/BetweenFilter.html" title="interface in org.geotools.filter">BetweenFilter</A> filter)</CODE><BR> Called when accept is called on a BetweenFilter. </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="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#visit(org.geotools.filter.CompareFilter)">visit</A></B>(<A HREF="../../../../org/geotools/filter/CompareFilter.html" title="interface in org.geotools.filter">CompareFilter</A> filter)</CODE><BR> Called when accept is called on a Compare Filter. </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="../../../../org/geotools/xml/filter/FilterEncodingPreProcessor.html#visit(org.geotools.filter.Expression)">visit</A></B>(<A HREF="../../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A> expression)</CODE>⌨️ 快捷键说明
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