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);
```

            
            final String type = "PropertyIsEqualTo";
            
            start(type);
            left.accept(this,extraData);
            right.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsNotEqualTo filter, Object extraData) {

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            final String type = "PropertyIsNotEqualTo";
            
            start(type);
            left.accept(this,extraData);
            right.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsGreaterThan filter, Object extraData) {

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            final String type = "PropertyIsGreaterThan";
            
            start(type);
            left.accept(this,extraData);
            right.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsGreaterThanOrEqualTo filter, Object extraData) {

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            final String type = "PropertyIsGreaterThanOrEqualTo";
            
            start(type);
            left.accept(this,extraData);
            right.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsLessThan filter, Object extraData) {

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            final String type = "PropertyIsLessThan";
            
            start(type);
            left.accept(this,extraData);
            right.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsLessThanOrEqualTo filter, Object extraData) {

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            final String type = "PropertyIsLessThanOrEqualTo";
            
            start(type);
            left.accept(this,extraData);
            right.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsLike filter, Object extraData) {

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            atts.addAttribute("", "singleChar", "singleChar", "", wcs);
            atts.addAttribute("", "escape", "escape", "", esc);
            
            start("PropertyIsLike",atts);


            expression.accept( this, extraData);
            
            element("Literal", filter.getLiteral() );
            
            end("PropertyIsLike");
            return extraData;

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        public Object visit(PropertyIsNull filter, Object extraData) {
            Expression expr = (Expression) filter.getExpression();
            
            String type = "PropertyIsNull";            
            start(type);
            expr.accept(this,extraData);
            end(type);
            return extraData;
        }


        public Object visit(PropertyIsNil filter, Object extraData) {

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                atts.addAttribute("", "nilReason", "nilReason", "", filter.getNilReason().toString());
            }
            
            String type = "PropertyIsNil";
            start(type, atts);
            expr.accept(this,extraData);
            end(type);
            return extraData;
        }
        
        public Object visit(BBOX filter, Object extraData) {

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                Envelope bbox = literal.evaluate(null, Envelope.class);                
                if( bbox != null ){
                    encode( bbox );
                }
                else {
                    right.accept(this,extraData);
                }
            }
            else {
                right.accept(this,extraData);
            }

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