Package org.opengis.filter

Examples of org.opengis.filter.PropertyIsNull.accept()

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    @Test
    public void testNullFilter() throws Exception {
        PropertyIsNull nullFilter = ff.isNull(ff.property("measurement/result"));

        Filter unrolled = (Filter) nullFilter.accept(visitor, null);
        assertTrue(unrolled instanceof PropertyIsNull);
        assertNotSame(nullFilter, unrolled);

        PropertyIsNull unmapped = (PropertyIsNull) unrolled;
        Expression unmappedAtt = unmapped.getExpression();
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        if (unscaled instanceof Literal) {
            processLiteralExpression((Literal) unscaled, defaultUnit);
        } else {
            // see if we can still optimize
            PropertyIsNull test = ff.isNull(unscaled);
            Filter simplified = (Filter) test.accept(new SimplifyingFilterVisitor(), null);
            if (simplified == Filter.INCLUDE) {
                // special case, the expression was nil to start with
                this.expression = NilExpression.NIL;
                this.uom = defaultUnit;
            } else if (simplified instanceof PropertyIsNull) {
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