com.google.appengine.api.search.dev
Class ExpressionBuilder.EmptyExpression

java.lang.Object
  com.google.appengine.api.search.dev.Expression
      com.google.appengine.api.search.dev.ExpressionBuilder.EmptyExpression

Enclosing class:

ExpressionBuilder

public static class ExpressionBuilder.EmptyExpression
extends Expression

Empty Expression, which is evaluated if the input string was empty.

Nested Class Summary

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

Expression.Sorter

Constructor Summary

ExpressionBuilder.EmptyExpression()

Method Summary

FieldValue	eval(Document doc) Evaluate the expression to field value proto for the specified document.
java.util.List<Expression.Sorter>	getSorters(int sign, double dfltD, java.lang.String dfltT) 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

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

Constructor Detail

ExpressionBuilder.EmptyExpression

public ExpressionBuilder.EmptyExpression()

Method Detail

eval

public FieldValue eval(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 java.util.List<Expression.Sorter> getSorters(int sign,
                                                    double dfltD,
                                                    java.lang.String dfltT)

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