org.apache.stanbol.entityhub.servicesapi.query

Class ValueConstraint

java.lang.Object

org.apache.stanbol.entityhub.servicesapi.query.Constraint

org.apache.stanbol.entityhub.servicesapi.query.ValueConstraint

Direct Known Subclasses:

ReferenceConstraint

public class ValueConstraint
extends Constraint

A constraint the filters/selects based on the value and/or the parsed dataTypes. A valid constraint MUST define a value OR valid data type. A valid data type is defined as a String that is NOT NULL and NOT empty.

If the collection of data types is null components processing this constraint are encouraged to deduct the data types based on the type of the value.

Author:

Rupert Westenthaler

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ValueConstraint.MODE The mode how multiple values are treated

Nested classes/interfaces inherited from class org.apache.stanbol.entityhub.servicesapi.query.Constraint

Constraint.ConstraintType

Field Summary

Fields

Modifier and Type	Field and Description
static ValueConstraint.MODE	DEFAULT_MODE The default ValueConstraint.MODE is ValueConstraint.MODE.any

Constructor Summary

Constructors

Constructor and Description
ValueConstraint(Object value)
ValueConstraint(Object value, Iterable<String> dataTypes)
ValueConstraint(Object value, Iterable<String> dataTypes, ValueConstraint.MODE mode)

Method Summary

Methods

Modifier and Type	Method and Description
Collection<String>	getDataTypes() Getter for the list of the parsed data types URIs
ValueConstraint.MODE	getMode() Getter for the ValueConstraint.MODE of this ValueConstraint
Set<Object>	getValues() Getter for the value
String	toString()

Methods inherited from class org.apache.stanbol.entityhub.servicesapi.query.Constraint

getBoost, getType, setBoost

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MODE

public static final ValueConstraint.MODE DEFAULT_MODE

The default ValueConstraint.MODE is ValueConstraint.MODE.any

Constructor Detail

ValueConstraint

public ValueConstraint(Object value)

ValueConstraint

public ValueConstraint(Object value,
               Iterable<String> dataTypes)

ValueConstraint

public ValueConstraint(Object value,
               Iterable<String> dataTypes,
               ValueConstraint.MODE mode)

Method Detail

getValues

public final Set<Object> getValues()

Getter for the value

Returns:

the value or null if the value is not constraint

getMode

public ValueConstraint.MODE getMode()

Getter for the ValueConstraint.MODE of this ValueConstraint

Returns:

the mode

getDataTypes

public final Collection<String> getDataTypes()

Getter for the list of the parsed data types URIs

Returns:

the list of dataType URIs or an empty list if not defined.

toString

public String toString()

Overrides:

toString in class Constraint