Re: [udig-devel] Simple Filter editor for UDIG

[Jody Garnett <jgarnett@xxxxxxxxxxxxxxx>]

Jesse Eichar wrote:

> A filter editor needs to be created for UDIG.  All we need at the 
> moment is implementation for the following methods:
>
> ProjectFactoryImpl.convertFilterToString(EDataType, Object)
> and
> ProjectFactoryImpl.createFilterFromString(EDataType eDataType, String 
> initialValue)
>
> This will allow the filters to be saved and loaded if desired and 
> edited in the properties view.
>
> Oh, the methods should ensure that no exceptions are thrown.  This 
> causes some poor behaviour if someone types in the wrong string.

Here is a link to a test case for ExpressionBuilder and 
ExpresssionCompiler -
http://svn.geotools.org/geotools/trunk/gt/module/main/test/org/geotools/filter/ExpressionBuilderTest.java

And here is the bit we care about:

> Expression exp = (Expression)ExpressionBuilder.parse(in);
> Expression out = (Expression)ExpressionBuilder.parse(exp.toString());
> assertEquals(exp.getValue(testFeature), out.getValue(testFeature));
JG