filterattributeextractor.html

Geotools是一个开源的Java GIS工具包,可利用它来开发符合标准的地理信息系统。Geotools提供了OGC(Open Geospatial Consortium)规范的一个实现来作为他们的

<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.Filter)">visit</A></B>(<A HREF="../../../org/geotools/filter/Filter.html" title="interface in org.geotools.filter">Filter</A>&nbsp;filter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on an AbstractFilter. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.FunctionExpression)">visit</A></B>(<A HREF="../../../org/geotools/filter/FunctionExpression.html" title="interface in org.geotools.filter">FunctionExpression</A>&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on an function expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.GeometryFilter)">visit</A></B>(<A HREF="../../../org/geotools/filter/GeometryFilter.html" title="interface in org.geotools.filter">GeometryFilter</A>&nbsp;filter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on a Geometry Filter. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.LikeFilter)">visit</A></B>(<A HREF="../../../org/geotools/filter/LikeFilter.html" title="interface in org.geotools.filter">LikeFilter</A>&nbsp;filter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on a Like Filter. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.LiteralExpression)">visit</A></B>(<A HREF="../../../org/geotools/filter/LiteralExpression.html" title="interface in org.geotools.filter">LiteralExpression</A>&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on a literal expression. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.LogicFilter)">visit</A></B>(<A HREF="../../../org/geotools/filter/LogicFilter.html" title="interface in org.geotools.filter">LogicFilter</A>&nbsp;filter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on a Logic Filter. </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.MathExpression)">visit</A></B>(<A HREF="../../../org/geotools/filter/MathExpression.html" title="interface in org.geotools.filter">MathExpression</A>&nbsp;expression)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on an math expression.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/FilterAttributeExtractor.html#visit(org.geotools.filter.NullFilter)">visit</A></B>(<A HREF="../../../org/geotools/filter/NullFilter.html" title="interface in org.geotools.filter">NullFilter</A>&nbsp;filter)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Called when accept is called on a Null Filter. </TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
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<P>

<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Field Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="attributeNames"><!-- --></A><H3>
attributeNames</H3>
<PRE>
protected <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Set.html" title="class or interface in java.util">Set</A> <B>attributeNames</B></PRE>
<DL>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="FilterAttributeExtractor()"><!-- --></A><H3>
FilterAttributeExtractor</H3>
<PRE>
public <B>FilterAttributeExtractor</B>()</PRE>
<DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="getAttributeNameSet()"><!-- --></A><H3>
getAttributeNameSet</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/Set.html" title="class or interface in java.util">Set</A> <B>getAttributeNameSet</B>()</PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an unmofiable set of the attribute names found so far during the visit</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeNames()"><!-- --></A><H3>
getAttributeNames</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>[] <B>getAttributeNames</B>()</PRE>
<DL>
<DD>DOCUMENT ME!
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an array of the attribute names found so far during the visit</DL>
</DD>
</DL>
<HR>

<A NAME="clear()"><!-- --></A><H3>
clear</H3>
<PRE>
public void <B>clear</B>()</PRE>
<DL>
<DD>Resets the attributes found so that a new attribute search can be performed
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.Filter)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/Filter.html" title="interface in org.geotools.filter">Filter</A>&nbsp;filter)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></B></DD>
<DD>Called when accept is called on an AbstractFilter. As it is imposible to
 create an instance of AbstractFilter this should never happen.  If it
 does it means that a subclass of AbstractFilter has failed to implement
 accept(FilterVisitor) correctly. Implementers of this method should
 probaly log a warning.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.Filter)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - The filter to visit<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.Filter)"><CODE>FilterVisitor.visit(org.geotools.filter.Filter)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.BetweenFilter)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/BetweenFilter.html" title="interface in org.geotools.filter">BetweenFilter</A>&nbsp;filter)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></B></DD>
<DD>Called when accept is called on a BetweenFilter. Implementers will want
 to access the left, middle and right expresions.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.BetweenFilter)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - The filter to visit<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.BetweenFilter)"><CODE>FilterVisitor.visit(org.geotools.filter.BetweenFilter)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.CompareFilter)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/CompareFilter.html" title="interface in org.geotools.filter">CompareFilter</A>&nbsp;filter)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></B></DD>
<DD>Called when accept is called on a Compare Filter. Implementers will want
 to access the left and right expresions.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.CompareFilter)">visit</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>filter</CODE> - The filter to visit<DT><B>See Also:</B><DD><A HREF="../../../org/geotools/filter/FilterVisitor.html#visit(org.geotools.filter.CompareFilter)"><CODE>FilterVisitor.visit(org.geotools.filter.CompareFilter)</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="visit(org.geotools.filter.GeometryFilter)"><!-- --></A><H3>
visit</H3>
<PRE>
public void <B>visit</B>(<A HREF="../../../org/geotools/filter/GeometryFilter.html" title="interface in org.geotools.filter">GeometryFilter</A>&nbsp;filter)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../org/geotools/filter/FilterVisitor.html" title="interface in org.geotools.filter">FilterVisitor</A></CODE></B></DD>
<DD>Called when accept is called on a Geometry Filter. Implementers will