Package com.google.appengine.api.search.dev

Class NumericDefaultExpression

java.lang.Object

com.google.appengine.api.search.dev.Expression

com.google.appengine.api.search.dev.NumericDefaultExpression

public class NumericDefaultExpression
extends Expression

Numeric expression which evaluates to default value if the child expression cannot be evaluated.

Nested Class Summary

Nested classes/interfaces inherited from class com.google.appengine.api.search.dev.Expression

Expression.Sorter

Constructor Summary

Constructors

Constructor	Description
NumericDefaultExpression(com.google.appengine.api.search.dev.NumericExpression expression, Double defaultValue)

Method Summary

Modifier and Type	Method	Description
com.google.apphosting.api.search.DocumentPb.FieldValue	eval(org.apache.lucene.document.Document doc)	Evaluate the expression to field value proto for the specified document.
double	evalDouble(org.apache.lucene.document.Document doc)	Evaluate double value from specified document.
Expression.Sorter	getNumericSorter(int sign, double defaultValueNumeric)
List<Expression.Sorter>	getSorters(int sign, double defaultValueNumeric, String defaultValueText)	Get list of sort classes for the expression.

Methods inherited from class com.google.appengine.api.search.dev.Expression

makeValue

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

NumericDefaultExpression

public NumericDefaultExpression(com.google.appengine.api.search.dev.NumericExpression expression,
 Double defaultValue)

Method Details

evalDouble

public double evalDouble(org.apache.lucene.document.Document doc)
                  throws EvaluationException

Evaluate double value from specified document.

Throws:

EvaluationException

eval

public com.google.apphosting.api.search.DocumentPb.FieldValue eval(org.apache.lucene.document.Document doc)
                                                            throws EvaluationException

Description copied from class: Expression

Evaluate the expression to field value proto for the specified document.

Specified by:

eval in class Expression

Throws:

EvaluationException

getSorters

public List<Expression.Sorter> getSorters(int sign,
 double defaultValueNumeric,
 String defaultValueText)

Description copied from class: Expression

Get list of sort classes for the expression. Usually it contains just one element, but for field expressions it can potentially return 2 sorters when both numeric and text fields exist with a field name.

Specified by:

getSorters in class Expression

getNumericSorter

public Expression.Sorter getNumericSorter(int sign,
 double defaultValueNumeric)