nullfilterimpl.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

          Used by FilterVisitors to perform some action on this filter instance.
 </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/NullFilterImpl.html#equals(java.lang.Object)">equals</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html" title="class or interface in java.lang">Object</A>&nbsp;obj)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Compares this filter to the specified object.  </TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/NullFilterImpl.html#evaluate(org.geotools.feature.Feature)">evaluate</A></B>(<A HREF="../../../org/geotools/feature/Feature.html" title="interface in org.geotools.feature">Feature</A>&nbsp;feature)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Determines whether or not a given feature is 'inside' this filter.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;Expression</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/NullFilterImpl.html#getExpression()">getExpression</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the expression which represents the null check.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/NullFilterImpl.html#getNullCheckValue()">getNullCheckValue</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/NullFilterImpl.html#getExpression()"><CODE>getExpression()</CODE></A>.</I></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/NullFilterImpl.html#hashCode()">hashCode</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Override of hashCode method.</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/NullFilterImpl.html#nullCheckValue(org.geotools.filter.Expression)">nullCheckValue</A></B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;nullCheck)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<B>Deprecated.</B>&nbsp;<I>use <CODE>PropertyIsNull#setExpression(Expression)</CODE></I></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/NullFilterImpl.html#setExpression(org.opengis.filter.expression.Expression)">setExpression</A></B>(Expression&nbsp;nullCheck)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the expression which represents the null check.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../org/geotools/filter/NullFilterImpl.html#toString()">toString</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a string representation of this filter.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_AbstractFilterImpl"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="../../../org/geotools/filter/AbstractFilterImpl.html" title="class in org.geotools.filter">AbstractFilterImpl</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/AbstractFilterImpl.html#and(org.geotools.filter.Filter)">and</A>, <A HREF="../../../org/geotools/filter/AbstractFilterImpl.html#not()">not</A>, <A HREF="../../../org/geotools/filter/AbstractFilterImpl.html#or(org.geotools.filter.Filter)">or</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_AbstractFilter"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="../../../org/geotools/filter/AbstractFilter.html" title="class in org.geotools.filter">AbstractFilter</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/AbstractFilter.html#accept(org.geotools.filter.FilterVisitor)">accept</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#contains(org.geotools.feature.Feature)">contains</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#evaluate(java.lang.Object)">evaluate</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#getFilterType()">getFilterType</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#isCompareFilter(short)">isCompareFilter</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#isGeometryDistanceFilter(short)">isGeometryDistanceFilter</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#isGeometryFilter(short)">isGeometryFilter</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#isLogicFilter(short)">isLogicFilter</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#isMathFilter(short)">isMathFilter</A>, <A HREF="../../../org/geotools/filter/AbstractFilter.html#isSimpleFilter(short)">isSimpleFilter</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_FilterAbstract"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class <A HREF="../../../org/geotools/filter/FilterAbstract.html" title="class in org.geotools.filter">FilterAbstract</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/FilterAbstract.html#accepts(org.geotools.feature.Feature)">accepts</A>, <A HREF="../../../org/geotools/filter/FilterAbstract.html#comparable(org.opengis.filter.expression.Expression, org.geotools.feature.Feature)">comparable</A>, <A HREF="../../../org/geotools/filter/FilterAbstract.html#eval(org.geotools.filter.Expression, org.geotools.feature.Feature)">eval</A>, <A HREF="../../../org/geotools/filter/FilterAbstract.html#eval(org.opengis.filter.expression.Expression, java.lang.Object)">eval</A></CODE></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#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#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#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>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_NullFilter"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface <A HREF="../../../org/geotools/filter/NullFilter.html" title="interface in org.geotools.filter">NullFilter</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/NullFilter.html#contains(org.geotools.feature.Feature)">contains</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Filter"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface <A HREF="../../../org/geotools/filter/Filter.html" title="interface in org.geotools.filter">Filter</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/Filter.html#accept(org.geotools.filter.FilterVisitor)">accept</A>, <A HREF="../../../org/geotools/filter/Filter.html#and(org.geotools.filter.Filter)">and</A>, <A HREF="../../../org/geotools/filter/Filter.html#getFilterType()">getFilterType</A>, <A HREF="../../../org/geotools/filter/Filter.html#not()">not</A>, <A HREF="../../../org/geotools/filter/Filter.html#or(org.geotools.filter.Filter)">or</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Filter"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface Filter</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>evaluate</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

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


<!-- ========= 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="NullFilterImpl()"><!-- --></A><H3>
NullFilterImpl</H3>
<PRE>
protected <B>NullFilterImpl</B>()</PRE>
<DL>
<DD>Constructor which sets the type as null check.
<P>
</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="nullCheckValue(org.geotools.filter.Expression)"><!-- --></A><H3>
nullCheckValue</H3>
<PRE>
public final void <B>nullCheckValue</B>(<A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>&nbsp;nullCheck)
                          throws <A HREF="../../../org/geotools/filter/IllegalFilterException.html" title="class in org.geotools.filter">IllegalFilterException</A></PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <CODE>PropertyIsNull#setExpression(Expression)</CODE></I>
<P>
<DD>Determines whether or not a given feature is 'inside' this filter.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/NullFilter.html#nullCheckValue(org.geotools.filter.Expression)">nullCheckValue</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/NullFilter.html" title="interface in org.geotools.filter">NullFilter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>nullCheck</CODE> - The attribute expression to null check.
<DT><B>Throws:</B>
<DD><CODE><A HREF="../../../org/geotools/filter/IllegalFilterException.html" title="class in org.geotools.filter">IllegalFilterException</A></CODE> - If attempting to add a non-attribute
         expression.<DT><B>'TODO:'</B></DT>
  <DD>REVISIT: change arg to AttributeExpression?, REVISIT: change name to setNullCheckValue.</DD>
</DL>
</DD>
</DL>
<HR>

<A NAME="getNullCheckValue()"><!-- --></A><H3>
getNullCheckValue</H3>
<PRE>
public final <A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A> <B>getNullCheckValue</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/NullFilterImpl.html#getExpression()"><CODE>getExpression()</CODE></A>.</I>
<P>
<DD>Returns the expression being checked for null.
<P>