com.pervasive.datarush.types

Class FieldDomain

java.lang.Object

com.pervasive.datarush.types.FieldDomain

All Implemented Interfaces:

Serializable

public final class FieldDomain
extends Object
implements Serializable

Contains meta-information about the allowed values, lower, and upper bounds for a given field.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static FieldDomain	UNSPECIFIED The unspecified field domain

Constructor Summary

Constructors

Constructor and Description
FieldDomain(ScalarValued lowerBound, ScalarValued upperBound, Set<? extends ScalarValued> values) Creates a new field domain

Method Summary

Methods

Modifier and Type	Method and Description
void	checkType(String field, ScalarTokenType type) Checks that the type of the domain matches the type of the field
boolean	equals(Object obj)
ScalarValued	getLowerBound() Returns the lower bound of the field or null if unknown
ScalarValued	getUpperBound() Returns the upper bound of the field or null if unknown
Set<ScalarValued>	getValues() Returns the allowed values of the field or empty if unknown.
boolean	hasDomainValues() Returns true if values are specified
int	hashCode()
boolean	isSpecified() Returns true if lower bound, upper bound, or values are specified
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

UNSPECIFIED

public static final FieldDomain UNSPECIFIED

The unspecified field domain

Constructor Detail

FieldDomain

public FieldDomain(ScalarValued lowerBound,
           ScalarValued upperBound,
           Set<? extends ScalarValued> values)

Creates a new field domain

Parameters:

lowerBound - the lower bound or null if unknown

upperBound - the upper bound of null if unknown

values - the possible values. Note that either null or the empty set is interpreted is unknown. The value of getValues() will always be normalized to the empty set in the case of unknown.

Method Detail

getLowerBound

public ScalarValued getLowerBound()

Returns the lower bound of the field or null if unknown

Returns:

the lower bound of the field

getUpperBound

public ScalarValued getUpperBound()

Returns the upper bound of the field or null if unknown

Returns:

the upper bound of the field

getValues

public Set<ScalarValued> getValues()

Returns the allowed values of the field or empty if unknown.

Returns:

the allowed values of the field

checkType

public void checkType(String field,
             ScalarTokenType type)

Checks that the type of the domain matches the type of the field

Parameters:

field - the name of the field, used for error handling

type - the type of the field

Throws:

IllegalArgumentException - if domain is invalid

isSpecified

public boolean isSpecified()

Returns true if lower bound, upper bound, or values are specified

Returns:

true if lower bound, upper bound, or values are specified

hasDomainValues

public boolean hasDomainValues()

Returns true if values are specified

Returns:

true if values are specified

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object