Examples of org.opengis.filter.expression.Expression.accept()

Class org.opengis.filter.expression.Expression

Examples of org.opengis.filter.expression.Expression.accept()

org.opengis.filter.expression.Expression.accept()
Accepts a visitor. Subclasses must implement with a method whose content is the following:
```
return visitor. {@linkplain ExpressionVisitor#visit visit}(this, extraData);
```


        Expression left = expression.getExpression1();
        Expression right = expression.getExpression2();


        List leftExpressions = (List) left.accept(this, null);
        List rightExpressions = (List) right.accept(this, null);


        Expression[][] product = buildExpressionsMatrix(leftExpressions, rightExpressions);


        return product;
    }

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        Expression lower = filter.getLowerBoundary();
        Expression upper = filter.getUpperBoundary();


        List expressions = (List) expression.accept(this, null);
        List lowerExpressions = (List) lower.accept(this, null);
        List upperExpressions = (List) upper.accept(this, null);


        final int combinedSize = expressions.size() * lowerExpressions.size()
                * upperExpressions.size();
        List combinedFilters = new ArrayList(combinedSize);

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        return unrolled;
    }


    public Object visit(PropertyIsLike filter, Object arg1) {
        Expression value = filter.getExpression();
        List unrolledValues = (List) value.accept(this, null);


        String literal = filter.getLiteral();
        String wildcard = filter.getWildCard();
        String single = filter.getSingleChar();
        String escape = filter.getEscape();

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        return unrolled;
    }


    public Object visit(PropertyIsNull filter, Object arg1) {
        Expression nullCheck = filter.getExpression();
        List sourceChecks = (List) nullCheck.accept(this, null);


        List combined = new ArrayList(sourceChecks.size());


        for (Iterator it = sourceChecks.iterator(); it.hasNext();) {
            Expression sourceValue = (Expression) it.next();

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            // later (if not available, it will use feature's default geometry)
            // instead of always use the default geometry from the feature type
            return filter;
        }
        Expression name = ff.property(propertyName);
        final List sourceNames = (List) name.accept(this, null);


        final List combined = new ArrayList(sourceNames.size());


        for (Iterator it = sourceNames.iterator(); it.hasNext();) {
            Expression sourceName = (Expression) it.next();

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        List arguments = new ArrayList(expressions.size());


        for (Iterator it = expressions.iterator(); it.hasNext();) {
            Expression mappingExpression = (Expression) it.next();
            List sourceExpressions = (List) mappingExpression.accept(this, null);
            if (sourceExpressions.size() > 1) {
                throw new UnsupportedOperationException("unrolling function arguments "
                        + "that map to more than one source expressions " + "is not supported yet");
            }
            Expression unrolledExpression = (Expression) sourceExpressions.get(0);

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                    final Collection<Expression> clientProperties = entry.getClientProperties()
                            .values();


                    FilterAttributeExtractor extractor = new FilterAttributeExtractor();
                    sourceExpression.accept(extractor, null);
                    idExpression.accept(extractor, null);


                    // RA - include function parameters in linkField
                    if (entry instanceof NestedAttributeMapping) {
                        final Expression linkFieldExpression = ((NestedAttributeMapping) entry).nestedFeatureType;
                        linkFieldExpression.accept(extractor, null);

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                    idExpression.accept(extractor, null);


                    // RA - include function parameters in linkField
                    if (entry instanceof NestedAttributeMapping) {
                        final Expression linkFieldExpression = ((NestedAttributeMapping) entry).nestedFeatureType;
                        linkFieldExpression.accept(extractor, null);
                    }


                    Iterator<Expression> it = clientProperties.iterator();
                    while (it.hasNext()) {
                        it.next().accept(extractor, null);

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                    }
                }
            }
        } else {
            FilterAttributeExtractor extractor = new FilterAttributeExtractor();
            idExpression.accept(extractor, null);
            for (String att : extractor.getAttributeNameSet()) {
                ids.add(peekValue(source, namespaceAwareFilterFactory.property(att)));
            }
        }
        if (foreignIds != null) {

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                  return null;
              }
  
                //Same deal again...
        upperBound.accept(this, null);


              if (i < postStack.size()) {
                // post process it
                    postStack.pop(); // upperBound.accept()'s bum filter
                preStack.pop(); // expr.accept()'s success

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