Examples of FilterVisitor

org.apache.directory.api.ldap.model.filter.FilterVisitor
Filter expression tree node visitor interface. Note that this is a variation of the extrinsic visitor variation. It has the following advantages over the standard visitor pattern:
- Visitor takes responsibility that a visitor can visit a node
- Each visitor knows which types of concrete classes it can visit
- New visitors can be created without changing the node class
- New node classes can be added without having to change old visitors
- Visitation order can be controled in every respect:
@author Apache Directory Project
org.opengis.filter.FilterVisitor
is.org/docs/02-059.pdf">Implementation specification 1.0 @author Chris Dillard (SYS Technologies) @since GeoAPI 2.0

Examples of org.apache.directory.api.ldap.model.filter.FilterVisitor




    @Test
    public void testAccept() throws Exception
    {
        assertNull( undefinedNode.accept( new FilterVisitor()
        {


            public Object visit( ExprNode node )
            {
                return null;

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Examples of org.opengis.filter.FilterVisitor

        Filter fullFilter = (org.opengis.filter.Filter) parseResult;
        final FilterFactory2 filterFactory2 = CommonFactoryFinder
                .getFilterFactory2(GeoTools.getDefaultHints());


        // -- extract spatial terms from Filter expression
        FilterVisitor visitor = new GeomExtractor(filterFactory2);
        Filter trimmedFilter = (Filter) fullFilter.accept(visitor, null);
        if (trimmedFilter == null) {
            return null;
        }

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Examples of org.opengis.filter.FilterVisitor

    static private GeometryFactory gf = new GeometryFactory();


    /** Example located on the wiki */
    public void testDefaultFilterVisitorFeatureIdExample() {
        Filter myFilter = ff.id(Collections.singleton(ff.featureId("fred")));
        FilterVisitor allFids = new DefaultFilterVisitor(){
            public Object visit( Id filter, Object data ) {
                Set set = (Set) data;
                set.addAll(filter.getIDs());
                return set;
            }

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Examples of org.opengis.filter.FilterVisitor

        assertEquals(new Integer(1), filter.accept(NullFilterVisitor.NULL_VISITOR, 1));


        filter = Filter.INCLUDE;
        assertEquals(new Integer(1), filter.accept(NullFilterVisitor.NULL_VISITOR, 1));


        FilterVisitor allFids = new NullFilterVisitor(){
            public Object visit( Id filter, Object data ) {
                if (data == null)
                    return null;
                Set set = (Set) data;
                set.addAll(filter.getIDs());

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