/ /

/ /

SDK de Dispositivo Atlas

Java SDK

Referencia de API

io.realm

Class RealmAny

Los SDK de dispositivos Atlas están obsoletos. Consulte deprecation page for details.

io.realm

java.lang.Object

io.realm.RealmAny

io.realm.RealmAny is used to represent a polymorphic Realm value.

At any particular moment an instance of this class stores a definite value of a definite type. If, for instance, that is an double value, you may call asDouble() to extract that value. You may call getType() to discover what type of value is currently stored. Calling asDouble() on an instance that does not store an double would raise a java.lang.ClassCastException .

RealmAny behaves like a value type on all the supported types except on Realm objects. It means that Realm will not persist any change to the RealmAny value except when the type is Realm object. When a RealmAny holds a Realm object, it just holds the reference to it, not a copy of the object. So modifications to the Realm object are reflected in the RealmAny value, including if the object is deleted. Because RealmAny instances are immutable, a new instance is needed to update a RealmAny attribute.

anObject.realmAnyAttribute = RealmAny.valueOf(5);
anObject.realmAnyAttribute = RealmAny.valueOf(10.f);

Es crucial entender que el acto de extraer un valor de un tipo específico requiere un conocimiento definido sobre el tipo almacenado. Invocar un método getter para cualquier tipo en particular, que no sea del mismo tipo que el valor almacenado, puede provocar una excepción. Nuestra recomendación para gestionar el polimorfismo RealmAny es guardar un caso switch alrededor del tipo RealmAny y su clase de valor interno.

RealmAny realmAny = aRealmObject.realmAnyAttribute;
switch (realmAny.getType()) {
    case OBJECT:
        if (realmAny.getValueClass().equals(DogRealmModel.class)) {
            DogRealmModel value = realmAny.asRealmModel(DogRealmModel.class);
        }
    case INTEGER:
        performAction(realmAny.asInteger());
        break;
    case BOOLEAN:
        performAction(realmAny.asBoolean());
        break;
    case STRING:
        performAction(realmAny.asString());
        break;
    case BINARY:
        performAction(realmAny.asBinary());
        break;
    case DATE:
        performAction(realmAny.asDate());
        break;
    case FLOAT:
        performAction(realmAny.asFloat());
        break;
    case DOUBLE:
        performAction(realmAny.asDouble());
        break;
    case DECIMAL128:
        performAction(realmAny.asDecimal128());
        break;
    case OBJECT_ID:
        performAction(realmAny.asObjectId());
        break;
    case UUID:
        performAction(realmAny.asUUID());
        break;
    case NULL:
        performNullAction();
        break;
}

getValueClass() retorna la clase Java que representa el valor interno envuelto por la instancia RealmAny. Si la clase resultante es una realización de io.realm.RealmModel, se puede llamar asRealmModel() para convertir el valor de RealmAny en una referencia de objeto Realm.

RealmAny values can also be sorted. The sorting order used between different RealmAny types, from lowest to highest, is:

Booleano
Byte/Short/Integer/Long/Float/Double/Decimal128
byte[]/String
fecha
ObjectId
UUID
RealmObject

Esto tiene implicaciones en el funcionamiento de RealmQuery.sort(String), RealmQuery.minRealmAny(String) y RealmQuery.maxRealmAny(String). Especialmente min() y max() no solo tendrá en cuenta los campos numéricos, sino que utilizará el orden de clasificación para determinar el valor "más grande" o "más bajo".

Nested Class Summary

Modificador y Tipo	Class and Description
`public static final`	RealmAny.Type

Resumen del método

Modificador y Tipo	Método y descripción
public byte	asBinary () Obtiene este valor como un byte[] si lo es, de lo contrario lanza una excepción.
public Boolean	asBoolean () Gets this value as a Boolean if it is one, otherwise throws exception.
public Byte	asByte () Obtiene este valor como un Byte si lo es; de lo contrario, lanza una excepción.
public Date	asDate () Gets this value as a Date if it is one, otherwise throws exception.
public Decimal128	asDecimal128 () Obtiene este valor como un Decimal128 si lo es, de lo contrario lanza una excepción.
public Double	asDouble () Gets this value as a Double if it is one, otherwise throws exception.
public Float	asFloat () Gets this value as a Float if it is one, otherwise throws exception.
public Integer	asInteger () Obtiene este valor como Integer si es uno, de lo contrario lanza excepciones.
public Long	asLong () Gets this value as a Long if it is one, otherwise throws exception.
public ObjectId	asObjectId () Gets this value as a ObjectId if it is one, otherwise throws exception.
public T	asRealmModel <T >( java.lang.Class<T> clazz ) Gets this value as a RealmModel if it is one, otherwise throws exception.
public Short	asShort () Obtiene este valor como Short si lo es, de lo contrario, lanza una excepción.
public String	asString () Gets this value as a String if it is one, otherwise throws exception.
public UUID	asUUID () Gets this value as a UUID if it is one, otherwise throws exception.
public final boolean	coercedEquals ( RealmAny other )
public final boolean	equals ( Object other ) Dos `RealmAny` son `.equals` si y solo si su contenido es igual.
public RealmAny.Type	getType () Obtiene el tipo interno de este objeto RealmAny.
public Class	getValueClass () Returns the Java class that represents the inner value wrapped by this RealmAny value.
public final int	hashCode () A `RealmAny` 's hash code is, exactly, the hash code of its value.
public booleano	isNull () Returns true if the inner value is null, false otherwise.
public static RealmAny	nullValue () Creates a new RealmAny of a null value.
public String	toString ()
public static RealmAny	valueOf ( Decimal128 value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( ObjectId value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Date value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( byte[] value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( String value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Double value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Float value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Boolean value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Long value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Integer value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Short value ) Creates a new RealmAny with the specified value.
public static RealmAny	valueOf ( Byte value ) Creates a new RealmAny with the specified value.

Inherited Methods

Methods inherited from class java.lang.Object : getClass , hashCode , equals , clone , toString , notify , notifyAll , wait , wait , wait , finalize

Detalle del método

asBinary

public byte asBinary ()
Obtiene este valor como un byte[] si lo es, de lo contrario lanza una excepción. Devuelve a byte[]. Throws java.lang.ClassCastException - if this value is not of the expected type.

asBoolean

public Boolean asBoolean ()
Gets this value as a Boolean if it is one, otherwise throws exception. Devuelve a Boolean. Throws java.lang.ClassCastException - if this value is not of the expected type.

asByte

public Byte asByte ()
Obtiene este valor como un Byte si lo es; de lo contrario, lanza una excepción. Devuelve a Byte. Throws java.lang.ClassCastException - if this value is not of the expected type.

asDate

public Date asDate ()
Gets this value as a Date if it is one, otherwise throws exception. Devuelve a Date. Throws java.lang.ClassCastException - if this value is not of the expected type.

asDecimal128

public Decimal128 asDecimal128 ()
Obtiene este valor como un Decimal128 si lo es, de lo contrario lanza una excepción. Devuelve a Decimal128. Throws java.lang.ClassCastException - if this value is not of the expected type.

como Double

public Double asDouble ()
Gets this value as a Double if it is one, otherwise throws exception. Devuelve a Double. Throws java.lang.ClassCastException - if this value is not of the expected type.

asFloat

public Float asFloat ()
Gets this value as a Float if it is one, otherwise throws exception. Devuelve a Float. Throws java.lang.ClassCastException - if this value is not of the expected type.

asInteger

public Integer asInteger ()
Obtiene este valor como Integer si es uno, de lo contrario lanza excepciones. Devuelve an Integer. Throws java.lang.ClassCastException - if this value is not of the expected type.

asLong

public Long asLong ()
Gets this value as a Long if it is one, otherwise throws exception. Devuelve a Long. Throws java.lang.ClassCastException - if this value is not of the expected type.

asObjectId

public ObjectId asObjectId ()
Gets this value as a ObjectId if it is one, otherwise throws exception. Devuelve an ObjectId. Throws java.lang.ClassCastException - if this value is not of the expected type.

asRealmModel

public T asRealmModel <T >( java.lang.Class<T> clazz )
Gets this value as a RealmModel if it is one, otherwise throws exception. Type Parameters `T` - el tipo RealmModel para convertir el valor interno. Devuelve a RealmModel of the T type. Throws java.lang.ClassCastException - if this value is not of the expected type.

asShort

public Short asShort ()
Obtiene este valor como Short si lo es, de lo contrario, lanza una excepción. Devuelve un Short. Throws java.lang.ClassCastException - if this value is not of the expected type.

comoString

public String asString ()
Gets this value as a String if it is one, otherwise throws exception. Devuelve Una string. Throws java.lang.ClassCastException - if this value is not of the expected type.

asUUID

public UUID asUUID ()
Gets this value as a UUID if it is one, otherwise throws exception. Devuelve un UUID. Throws java.lang.ClassCastException - if this value is not of the expected type.

coercedEquals

public final boolean coercedEquals ( RealmAny other )

equals

public final boolean equals ( Object other )
Dos `RealmAny` son `.equals` si y solo si su contenido es igual. Parámetros `other` - compare target Devuelve true if the target has the same value Anulaciones `equals` en la clase Objeto

getType

public RealmAny.Type getType ()
Obtiene el tipo interno de este objeto RealmAny. Devuelve the inner RealmAny.Type

getValueClass

public Class getValueClass ()
Returns the Java class that represents the inner value wrapped by this RealmAny value. Devuelve the class that represents the inner value wrapped by this RealmAny value.

hashCode

public final int hashCode ()
A `RealmAny` 's hash code is, exactly, the hash code of its value. Devuelve true if the target has the same value Throws NullPointerException - if the inner value is null Anulaciones `hashCode` en la clase Objeto

isNull

public boolean isNull ()
Returns true if the inner value is null, false otherwise. Devuelve Verdadero si el valor interno es nulo, falso en caso contrario.

nullValue

public static RealmAny nullValue ()
Creates a new RealmAny of a null value. Devuelve a new RealmAny instance of a null value.

toString

public String toString ()
Anulaciones `toString` en la clase Objeto

valueOf

public static RealmAny valueOf ( Decimal128 value )
Creates a new RealmAny with the specified value. If the value is not null the type will be RealmAny.Type.DECIMAL128 , RealmAny.Type.NULL otherwise. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Decimal128.

public static RealmAny valueOf ( ObjectId value )
Creates a new RealmAny with the specified value. If the value is not null the type will be RealmAny.Type.OBJECT_ID , RealmAny.Type.NULL otherwise. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of an ObjectId.

public static RealmAny valueOf ( Date value )
Creates a new RealmAny with the specified value. If the value is not null the type will be RealmAny.Type.DATE , RealmAny.Type.NULL otherwise. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Date.

public static RealmAny valueOf ( byte[] value )
Creates a new RealmAny with the specified value. If the value is not null the type will be RealmAny.Type.BINARY , RealmAny.Type.NULL otherwise. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a byte[].

public static RealmAny valueOf ( String value )
Crea un nuevo RealmAny con el valor especificado. Si el valor no es nulo, el tipo será RealmAny.Type.STRING , RealmAny.Type.NULL en caso contrario. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a String.

public static RealmAny valueOf ( Double value )
Creates a new RealmAny with the specified value. If the value is not null the type will be RealmAny.Type.DOUBLE , RealmAny.Type.NULL otherwise. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Double.

public static RealmAny valueOf ( Float value )
Crea un nuevo RealmAny con el valor especificado. Si el valor no es nulo, el tipo será RealmAny.Type.FLOAT , si no, será RealmAny.Type.NULL . Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Float.

public static RealmAny valueOf ( Boolean value )
Creates a new RealmAny with the specified value. If the value is not null the type will be RealmAny.Type.BOOLEAN , RealmAny.Type.NULL otherwise. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Boolean.

public static RealmAny valueOf ( Long value )
Crea un nuevo RealmAny con el valor especificado. Si el valor no es nulo, el tipo será RealmAny.Type.INTEGER , en caso contrario, RealmAny.Type.NULL. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Long.

public static RealmAny valueOf ( Integer value )
Crea un nuevo RealmAny con el valor especificado. Si el valor no es nulo, el tipo será RealmAny.Type.INTEGER , en caso contrario, RealmAny.Type.NULL. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Integer.

public static RealmAny valueOf ( Short value )
Crea un nuevo RealmAny con el valor especificado. Si el valor no es nulo, el tipo será RealmAny.Type.INTEGER , en caso contrario, RealmAny.Type.NULL. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny of a Short.

public static RealmAny valueOf ( Byte value )
Crea un nuevo RealmAny con el valor especificado. Si el valor no es nulo, el tipo será RealmAny.Type.INTEGER , en caso contrario, RealmAny.Type.NULL. Parámetros `value` - the RealmAny value. Devuelve a new RealmAny containing a Byte value.

Volver

Realm.transacción.OnSuccess

RealmAny.Type