com.pervasive.datarush.encoding.text

Class TruthValues

java.lang.Object

com.pervasive.datarush.encoding.text.TruthValues

Direct Known Subclasses:

ExactTruthMapping, InsensitiveTruthMapping

public abstract class TruthValues
extends Object

A mapping between boolean values and strings. Any number of strings may be mapped to a boolean value, but each boolean value must have a single canonical string representation.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	falsity Text representing a value of false.
protected String	truth Text representing a value of true.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TruthValues(String truth, String falsity) Defines a new mapping, specifying the canonical representations of true and false.

Method Summary

Modifier and Type	Method and Description
String	falseValue() Gets the string value for false.
abstract boolean	isFalse(String text) Indicates whether the given string is a representation for false.
abstract boolean	isTrue(String text) Indicates whether the given string is a representation for true.
String	trueValue() Gets the string value for true.

Methods inherited from class java.lang.Object

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

Field Detail

truth

protected final String truth

Text representing a value of true.

falsity

protected final String falsity

Text representing a value of false.

Constructor Detail

TruthValues

protected TruthValues(String truth,
                      String falsity)

Defines a new mapping, specifying the canonical representations of true and false.

Parameters:

truth - the canonical string representation of true.

falsity - the canonical string representation of false.

Method Detail

falseValue

public String falseValue()

Gets the string value for false.

Returns:

the canonical string representation of false.

trueValue

public String trueValue()

Gets the string value for true.

Returns:

the canonical string representation of true.

isTrue

public abstract boolean isTrue(String text)

Indicates whether the given string is a representation for true.

Parameters:

text - the string to check

Returns:

true if the string represents truth

isFalse

public abstract boolean isFalse(String text)

Indicates whether the given string is a representation for false.

Parameters:

text - the string to check

Returns:

true if the string represents falsity