public class SumVisitor extends Object implements FeatureCalc, FeatureAttributeVisitor
Modifier and Type | Class and Description |
---|---|
static class |
SumVisitor.SumResult |
protected static interface |
SumVisitor.SumStrategy |
Constructor and Description |
---|
SumVisitor(Expression expr) |
SumVisitor(int attributeTypeIndex,
SimpleFeatureType type) |
SumVisitor(String attrName,
SimpleFeatureType type) |
Modifier and Type | Method and Description |
---|---|
Expression |
getExpression() |
List<Expression> |
getExpressions()
List of expressions used by visitor.
|
CalcResult |
getResult()
Returns the result of the calculation as a handy object which can be merged and modified.
|
Object |
getSum() |
void |
init(SimpleFeatureCollection collection) |
void |
reset() |
protected void |
setStrategy(SumVisitor.SumStrategy strategy) |
void |
setValue(Object newSum) |
void |
visit(Feature feature)
Visit the provided feature.
|
void |
visit(SimpleFeature feature) |
public SumVisitor(int attributeTypeIndex, SimpleFeatureType type) throws IllegalFilterException
IllegalFilterException
public SumVisitor(String attrName, SimpleFeatureType type) throws IllegalFilterException
IllegalFilterException
public SumVisitor(Expression expr) throws IllegalFilterException
IllegalFilterException
protected void setStrategy(SumVisitor.SumStrategy strategy)
public void init(SimpleFeatureCollection collection)
public List<Expression> getExpressions()
FeatureAttributeVisitor
getExpressions
in interface FeatureAttributeVisitor
public void visit(SimpleFeature feature)
public void visit(Feature feature)
FeatureVisitor
Please consult the documentation for the FeatureCollection you are visiting to learn more - the provided feature may be invalid, or read only.
visit
in interface FeatureVisitor
public Expression getExpression()
public Object getSum()
public void setValue(Object newSum)
public void reset()
public CalcResult getResult()
FeatureCalc
getResult
in interface FeatureCalc
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