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

org.opengis.filter.Filter.accept()
Accepts a visitor.
Implementations of all subinterfaces must have with a method whose content is the following:
```
return visitor. {@linkplain FilterVisitor#visit visit}(this, extraData);
```


            Filter remainingFilter = unpacker.getFilterPost();


            unpacker = new PostPreProcessFilterSplittingVisitor(
                    GeometryEncoderSDE.getCapabilities(), featureType, null);
            remainingFilter.accept(unpacker, null);


            this.geometryFilter = unpacker.getFilterPre();
            this.geometryFilter = (Filter) this.geometryFilter.accept(filterSimplifier, null);
            if (LOGGER.isLoggable(Level.FINE) && geometryFilter != null)
                LOGGER.fine("Spatial-Filter portion of SDE Query: '" + geometryFilter + "'");

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                current.push(new Data(filter));
                break;


            case MEDIUM:
                child = filter.getFilter();
                extraData = child.accept(this, extraData);


                Data mediumFilter = createMediumLevelLogicFilter(FilterType.LOGIC_NOT, startSize);
                current.push(mediumFilter);
                break;

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                break;


            case HIGH:


                child = filter.getFilter();
                extraData = child.accept(this, extraData);


                Data highFilter = createHighLevelLogicFilter(FilterType.LOGIC_AND, startSize);
                current.push(highFilter);


                break;

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     */
    public void visit(Rule rule) {
        Filter filter = rule.getFilter();


        if (filter != null) {
            filter.accept( this, null );
        }


        Symbolizer[] symbolizers = rule.getSymbolizers();


        if (symbolizers != null) {

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        int envSize = envelopes.size();
        int othSize = otherRestrictions.size();


        for (Iterator<Filter> it = f.getChildren().iterator(); it.hasNext();) {
            Filter child = (Filter) it.next();
            child.accept(this, arg1);
        }


        if (envelopes.size() >= (envSize + 2)) {
            Envelope e = (Envelope) envelopes.pop();
            for (int i = envelopes.size(); i > envSize; i--) {

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        int envSize = envelopes.size();
        int othSize = otherRestrictions.size();


        for (Iterator<Filter> it = f.getChildren().iterator(); it.hasNext();) {
            Filter child = (Filter) it.next();
            child.accept(this, arg1);
        }


        if (envelopes.size() > (envSize + 1)) {
            Envelope e = (Envelope) envelopes.pop();

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                // if we have a post filter we have to include in the queried features also the
                // attribute needed to evaluate the post-filter
                if (postFilter != null) {
                    Set<String> queriedAttributes = new HashSet<String>(Arrays.asList(properties));
                    FilterAttributeExtractor extraAttributeExtractor = new FilterAttributeExtractor();
                    postFilter.accept(extraAttributeExtractor, null);
                    Set<String> extraAttributeSet = new HashSet<String>(
                            extraAttributeExtractor.getAttributeNameSet());
                    extraAttributeSet.removeAll(queriedAttributes);
                    if (extraAttributeSet.size() > 0) {
                        String[] queryProperties = new String[properties.length

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            return Collections.emptySet();
        }
        
        // that is has spatial attributes
        SpatialIndexAttributeExtractor attributesExtractor = new SpatialIndexAttributeExtractor();
        filter.accept(attributesExtractor, null);
        Map<String, Integer> attributes = attributesExtractor.getSpatialProperties();
        if(attributes.isEmpty() || attributes.size() > 1) {
            return Collections.emptySet();
        }

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            List<AttributeMapping> listMappings = mapping.getIsListMappings();
            Filter isListFilter = null;
            if (!listMappings.isEmpty()) {
                IsListFilterVisitor listChecker = new IsListFilterVisitor(listMappings, mapping);
                Filter complexFilter = query.getFilter();
                complexFilter.accept(listChecker, null);
                if (listChecker.isListFilterExists()) {
                    isListFilter = AppSchemaDataAccess.unrollFilter(complexFilter, mapping);
                }
            }
            // END OF HACK

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                    || mappedSource instanceof JDBCFeatureStore) {
                // has database as data source, we can use the data source filter capabilities
                FilterCapabilities capabilities = getFilterCapabilities(mappedSource);
                ComplexFilterSplitter splitter = new ComplexFilterSplitter(capabilities, mapping);
                Filter filter = query.getFilter();
                filter.accept(splitter, null);
                Filter preFilter = splitter.getFilterPre();
                query.setFilter(preFilter);
                filter = splitter.getFilterPost();
                
                if (isJoining) {

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