functionexpressionimpl.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><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>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Expression"><!-- --></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/Expression.html" title="interface in org.geotools.filter">Expression</A></B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../org/geotools/filter/Expression.html#accept(org.geotools.filter.FilterVisitor)">accept</A>, <A HREF="../../../org/geotools/filter/Expression.html#evaluate(org.geotools.feature.Feature)">evaluate</A>, <A HREF="../../../org/geotools/filter/Expression.html#getValue(org.geotools.feature.Feature)">getValue</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_Expression"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from interface Expression</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="FunctionExpressionImpl()"><!-- --></A><H3>
FunctionExpressionImpl</H3>
<PRE>
protected <B>FunctionExpressionImpl</B>()</PRE>
<DL>
<DD>Creates a new instance of FunctionExpression
<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="getType()"><!-- --></A><H3>
getType</H3>
<PRE>
public short <B>getType</B>()</PRE>
<DL>
<DD>Gets the type of this expression.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FunctionExpression.html#getType()">getType</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FunctionExpression.html" title="interface in org.geotools.filter">FunctionExpression</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../org/geotools/filter/DefaultExpression.html#getType()">getType</A></CODE> in class <CODE><A HREF="../../../org/geotools/filter/DefaultExpression.html" title="class in org.geotools.filter">DefaultExpression</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the short representation of a function expression.</DL>
</DD>
</DL>
<HR>

<A NAME="getName()"><!-- --></A><H3>
getName</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>getName</B>()</PRE>
<DL>
<DD>Gets the name of this function.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../org/geotools/filter/FunctionExpression.html#getName()">getName</A></CODE> in interface <CODE><A HREF="../../../org/geotools/filter/FunctionExpression.html" title="interface in org.geotools.filter">FunctionExpression</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the name of the function.</DL>
</DD>
</DL>
<HR>

<A NAME="setName(java.lang.String)"><!-- --></A><H3>
setName</H3>
<PRE>
public void <B>setName</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;name)</PRE>
<DL>
<DD>Sets the name of hte function.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getParameters()"><!-- --></A><H3>
getParameters</H3>
<PRE>
public <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A> <B>getParameters</B>()</PRE>
<DL>
<DD>Returns the function parameters.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>getParameters</CODE> in interface <CODE>Function</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setParameters(java.util.List)"><!-- --></A><H3>
setParameters</H3>
<PRE>
public void <B>setParameters</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/util/List.html" title="class or interface in java.util">List</A>&nbsp;params)</PRE>
<DL>
<DD>Sets the function paramters.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getArgs()"><!-- --></A><H3>
getArgs</H3>
<PRE>
public <A HREF="../../../org/geotools/filter/Expression.html" title="interface in org.geotools.filter">Expression</A>[] <B>getArgs</B>()</PRE>
<DL>
<DD><B>Deprecated.</B>&nbsp;<I>use <A HREF="../../../org/geotools/filter/FunctionExpressionImpl.html#getParameters()"><CODE>getParameters()</CODE></A>.</I>
<P>
<DD>Since this class is heavily subclasses within the geotools toolkit