Package org.bukkit.persistence

Interface PersistentDataType<T,Z>

Type Parameters:

T - the primary object type that is stored in the given tag

Z - the retrieved object type when applying this tag type

All Known Implementing Classes:

PersistentDataType.PrimitivePersistentDataType

public interface PersistentDataType<T,Z>

This class represents an enum with a generic content type. It defines the types a custom tag can have.

This interface can be used to create your own custom PersistentDataType with different complex types. This may be useful for the likes of a UUIDTagType:

 
 public class UUIDTagType implements PersistentDataType<byte[], UUID> {

         {@literal @Override}
         public Class<byte[]> getPrimitiveType() {
             return byte[].class;
         }

         {@literal @Override}
         public Class<UUID> getComplexType() {
             return UUID.class;
         }

         {@literal @Override}
         public byte[] toPrimitive(UUID complex, PersistentDataAdapterContext context) {
             ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
             bb.putLong(complex.getMostSignificantBits());
             bb.putLong(complex.getLeastSignificantBits());
             return bb.array();
         }

         {@literal @Override}
         public UUID fromPrimitive(byte[] primitive, PersistentDataAdapterContext context) {
             ByteBuffer bb = ByteBuffer.wrap(primitive);
             long firstLong = bb.getLong();
             long secondLong = bb.getLong();
             return new UUID(firstLong, secondLong);
         }
     }

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	PersistentDataType.PrimitivePersistentDataType<T>	A default implementation that simply exists to pass on the retrieved or inserted value to the next layer.

Field Summary

Fields

Modifier and Type	Field	Description
static PersistentDataType<Byte,Byte>	BYTE
static PersistentDataType<byte[],byte[]>	BYTE_ARRAY
static PersistentDataType<Double,Double>	DOUBLE
static PersistentDataType<Float,Float>	FLOAT
static PersistentDataType<Integer,Integer>	INTEGER
static PersistentDataType<int[],int[]>	INTEGER_ARRAY
static PersistentDataType<Long,Long>	LONG
static PersistentDataType<long[],long[]>	LONG_ARRAY
static PersistentDataType<Short,Short>	SHORT
static PersistentDataType<String,String>	STRING
static PersistentDataType<PersistentDataContainer,PersistentDataContainer>	TAG_CONTAINER

Method Summary

Modifier and Type	Method	Description
Z	fromPrimitive(T primitive, @NotNull PersistentDataAdapterContext context)	Creates a complex object based of the passed primitive value
@NotNull Class<Z>	getComplexType()	Returns the complex object type the primitive value resembles.
@NotNull Class<T>	getPrimitiveType()	Returns the primitive data type of this tag.
T	toPrimitive(Z complex, @NotNull PersistentDataAdapterContext context)	Returns the primitive data that resembles the complex object passed to this method.

Field Detail

BYTE

static final PersistentDataType<Byte,Byte> BYTE

SHORT

static final PersistentDataType<Short,Short> SHORT

INTEGER

static final PersistentDataType<Integer,Integer> INTEGER

LONG

static final PersistentDataType<Long,Long> LONG

FLOAT

static final PersistentDataType<Float,Float> FLOAT

DOUBLE

static final PersistentDataType<Double,Double> DOUBLE

STRING

static final PersistentDataType<String,String> STRING

BYTE_ARRAY

static final PersistentDataType<byte[],byte[]> BYTE_ARRAY

INTEGER_ARRAY

static final PersistentDataType<int[],int[]> INTEGER_ARRAY

LONG_ARRAY

static final PersistentDataType<long[],long[]> LONG_ARRAY

TAG_CONTAINER

static final PersistentDataType<PersistentDataContainer,PersistentDataContainer> TAG_CONTAINER

Method Detail

getPrimitiveType

@NotNull
@NotNull Class<T> getPrimitiveType()

Returns the primitive data type of this tag.

Returns:

the class

getComplexType

@NotNull
@NotNull Class<Z> getComplexType()

Returns the complex object type the primitive value resembles.

Returns:

the class type

toPrimitive

@NotNull
T toPrimitive(@NotNull
              Z complex,
              @NotNull
              @NotNull PersistentDataAdapterContext context)

Returns the primitive data that resembles the complex object passed to this method.

Parameters:

complex - the complex object instance

context - the context this operation is running in

Returns:

the primitive value

fromPrimitive

@NotNull
Z fromPrimitive(@NotNull
                T primitive,
                @NotNull
                @NotNull PersistentDataAdapterContext context)

Creates a complex object based of the passed primitive value

Parameters:

primitive - the primitive value

context - the context this operation is running in

Returns:

the complex object instance