public class Constant extends Expression
Constructor and Description |
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Constant(Element constant,
FieldMetaInfo.Optype opType,
ArrayList<Attribute> fieldDefs)
Construct an new Constant Expression.
|
Modifier and Type | Method and Description |
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double |
getResult(double[] incoming)
Get the result of evaluating the expression.
|
String |
getResultCategorical(double[] incoming)
Gets the result of evaluating the expression when the
optype is categorical or ordinal as the actual String
value.
|
static void |
main(String[] args) |
String |
toString(String pad) |
getExpression, getExpression, getFieldDef, getFieldDefIndex, getOptype, getResultContinuous, setFieldDefs, toString
public Constant(Element constant, FieldMetaInfo.Optype opType, ArrayList<Attribute> fieldDefs) throws Exception
constant
- the xml Element containing the ConstantopType
- the optype for the ConstantfieldDefs
- an ArrayList of Attributes for the fields that this
Expression might need to access (not needed for a constant!)Exception
- if the optype is specified as continuous
and there is a problem parsing the value of the Constantpublic double getResult(double[] incoming)
getResult
in class Expression
incoming
- the incoming parameter valuespublic String getResultCategorical(double[] incoming) throws Exception
getResultCategorical
in class Expression
incoming
- the incoming parameter valuesException
- if the optype is continuouspublic static void main(String[] args)
public String toString(String pad)
toString
in class Expression
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