com.thinkaurelius.titan.core.attribute

Enum Contain

java.lang.Object

java.lang.Enum<Contain>

com.thinkaurelius.titan.core.attribute.Contain

All Implemented Interfaces:

TitanPredicate, com.tinkerpop.blueprints.Predicate, Serializable, Comparable<Contain>

public enum Contain
extends Enum<Contain>
implements TitanPredicate

Comparison relations for text objects.

Author:

Matthias Broecheler (me@matthiasb.com)

Nested Class Summary

Nested classes/interfaces inherited from interface com.thinkaurelius.titan.graphdb.query.TitanPredicate

TitanPredicate.Converter

Enum Constant Summary

Enum Constants

Enum Constant and Description
IN Whether an element is in a collection
NOT_IN Whether an element is not in a collection

Method Summary

Methods

Modifier and Type	Method and Description
boolean	hasNegation() Whether this predicate has a predicate that is semantically its negation.
boolean	isQNF() Returns true if this predicate is in query normal form.
boolean	isValidCondition(Object condition) Whether the given condition is a valid condition for this predicate.
boolean	isValidValueType(Class<?> clazz) Whether the given class is a valid data type for a value to which this predicate may be applied.
static Contain	valueOf(String name) Returns the enum constant of this type with the specified name.
static Contain[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface com.thinkaurelius.titan.graphdb.query.TitanPredicate

evaluate, negate

Enum Constant Detail

IN

public static final Contain IN

Whether an element is in a collection

NOT_IN

public static final Contain NOT_IN

Whether an element is not in a collection

Method Detail

values

public static Contain[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Contain c : Contain.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Contain valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

isValidValueType

public boolean isValidValueType(Class<?> clazz)

Description copied from interface: TitanPredicate

Whether the given class is a valid data type for a value to which this predicate may be applied.

For instance, the Cmp.GREATER_THAN can only be applied to Comparable values.

Specified by:

isValidValueType in interface TitanPredicate

Returns:

isValidCondition

public boolean isValidCondition(Object condition)

Description copied from interface: TitanPredicate

Whether the given condition is a valid condition for this predicate.

For instance, the Cmp.GREATER_THAN would require that the condition is comparable and not null.

Specified by:

isValidCondition in interface TitanPredicate

Returns:

hasNegation

public boolean hasNegation()

Description copied from interface: TitanPredicate

Whether this predicate has a predicate that is semantically its negation. For instance, Cmp.EQUAL and Cmp.NOT_EQUAL are negatives of each other.

Specified by:

hasNegation in interface TitanPredicate

Returns:

isQNF

public boolean isQNF()

Description copied from interface: TitanPredicate

Returns true if this predicate is in query normal form.

Specified by:

isQNF in interface TitanPredicate

Returns: