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ObjectSumVisitor
public class SumVisitor
Calculates the Sum of an attribute (of a FeatureVisitor)
Nested Class Summary | |
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static class |
SumVisitor.SumResult
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Constructor Summary | |
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SumVisitor(Expression expr)
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SumVisitor(int attributeTypeIndex,
SimpleFeatureType type)
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SumVisitor(String attrName,
SimpleFeatureType type)
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Method Summary | |
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Expression |
getExpression()
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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()
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void |
init(SimpleFeatureCollection collection)
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void |
reset()
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void |
setValue(Object newSum)
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void |
visit(Feature feature)
Visit the provided feature. |
void |
visit(SimpleFeature feature)
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Methods inherited from class Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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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
Method Detail |
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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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