org.mapdb / BTreeMapJava / NodeSerializer

NodeSerializer

open class NodeSerializer : Serializer<Node>


Inherited Properties

BIG_DECIMAL static val BIG_DECIMAL: GroupSerializer<BigDecimal>
BIG_INTEGER static val BIG_INTEGER: GroupSerializer<BigInteger>
BOOLEAN static val BOOLEAN: GroupSerializer<Boolean>

A predefined Serializer that handles non-null Boolean whereby Booleans are serialized to a one byte format.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

BYTE static val BYTE: GroupSerializer<Byte>

A predefined Serializer that handles non-null Byte whereby Bytes are serialized to a one byte format.

This Serializer hashes Bytes using the original Byte#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

BYTE_ARRAY static val BYTE_ARRAY: GroupSerializer<ByteArray>

Serializes byte[] it adds header which contains size information

BYTE_ARRAY_DELTA static val BYTE_ARRAY_DELTA: GroupSerializer<ByteArray>
BYTE_ARRAY_DELTA2 static val BYTE_ARRAY_DELTA2: GroupSerializer<ByteArray>
BYTE_ARRAY_NOSIZE static val BYTE_ARRAY_NOSIZE: Serializer<ByteArray>

Serializes byte[] directly into underlying store It does not store size, so it can not be used in Maps and other collections.

CHAR static val CHAR: GroupSerializer<Char>

A predefined Serializer that handles non-null Character.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

CHAR_ARRAY static val CHAR_ARRAY: GroupSerializer<CharArray>

Serializes char[] it adds header which contains size information

CLASS static val CLASS: GroupSerializer<Class<*>>
DATE static val DATE: GroupSerializer<Date>
DOUBLE static val DOUBLE: GroupSerializer<Double>

A predefined Serializer that handles non-null Double whereby Doubles are serialized to an 8 byte format. The Serializer also stores the Float's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Doubles using the original Double#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

DOUBLE_ARRAY static val DOUBLE_ARRAY: GroupSerializer<DoubleArray>

Serializes double[] it adds header which contains size information

ELSA static val ELSA: GroupSerializer<Any>
FLOAT static val FLOAT: GroupSerializer<Float>

A predefined Serializer that handles non-null Float whereby Floats are serialized to a 4 byte format. The Serializer also stores the Float's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Floats using the original Float#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

FLOAT_ARRAY static val FLOAT_ARRAY: GroupSerializer<FloatArray>
ILLEGAL_ACCESS static val ILLEGAL_ACCESS: GroupSerializer<Any>

A predefined Serializer that always throws an IllegalAccessError when invoked.

This serializer can be used for testing and assertions.

INTEGER static val INTEGER: GroupSerializer<Int>

A predefined Serializer that handles non-null Integer whereby Integers are serialized to a 4 byte format.

This Serializer hashes Integers using the original Integer#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

INTEGER_DELTA static val INTEGER_DELTA: GroupSerializer<Int>

A predefined Serializer that handles non-null Integer whereby Integers are serialized to a compressed byte format and neighboring Integers are delta encoded in BTreeMaps. Neighbors with a small delta can be encoded using a single byte.

Smaller positive values occupy less than 4 bytes. Large and negative values could occupy 4 or 5 bytes.

This Serializer hashes Integers using the original Integer#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

INTEGER_PACKED static val INTEGER_PACKED: GroupSerializer<Int>

A predefined Serializer that handles non-null Integer whereby Integers are serialized to a compressed byte format.The Serializer also stores the Longs's size, allowing it to be used as a GroupSerializer in BTreeMaps.

Smaller positive values occupy less than 4 bytes. Large and negative values could occupy 4 or 5 bytes.

This Serializer hashes Integers using the original Integer#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

INT_ARRAY static val INT_ARRAY: GroupSerializer<IntArray>

Serializes int[] it adds header which contains size information

JAVA static val JAVA: GroupSerializer<Any>

A predefined Serializer that handles non-null Serializable Java objects whereby the standard Java serialization will be applied using java.io.ObjectInputStream and java.io.ObjectOutputStream methods.

This Serializer hashes Objects using a specially tailored hash code method that, in turn, is using the objects own hashCode()

If a null value is passed to the Serializer, a NullPointerException will be thrown.

LONG static val LONG: GroupSerializer<Long>

A predefined Serializer that handles non-null Long whereby Longs are serialized to an 8 byte format. The Serializer also stores the Longs's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Longs using the original Long#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

LONG_ARRAY static val LONG_ARRAY: GroupSerializer<LongArray>

Serializes long[] it adds header which contains size information

LONG_DELTA static val LONG_DELTA: GroupSerializer<Long>

A predefined Serializer that handles non-null Long whereby Longs are serialized to a compressed byte format and neighboring Longs are delta encoded in BTreeMaps. Neighbors with a small delta can be encoded using a single byte.

Smaller positive values occupy less than 8 bytes. Large and negative values could occupy 8 or 9 bytes.

This Serializer hashes Longs using the original Long#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

LONG_PACKED static val LONG_PACKED: GroupSerializer<Long>

A predefined Serializer that handles non-null Long whereby Longs are serialized to a compressed byte format. The Serializer also stores the Longs's size, allowing it to be used as a GroupSerializer in BTreeMaps.

Smaller positive values occupy less than 8 bytes. Large and negative values could occupy 8 or 9 bytes.

This Serializer hashes Longs using the original Long#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

RECID static val RECID: GroupSerializer<Long>

A predefined Serializer that handles non-null Long used as a recid whereby recids are serialized to an eight byte format including a checksum.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

RECID_ARRAY static val RECID_ARRAY: GroupSerializer<LongArray>

A predefined Serializer that handles non-null arrays of longs used as a recids whereby recids are serialized to an eight byte format including a checksum.

If a null array is passed to the Serializer, a NullPointerException will be thrown.

If an array that contains a null value is passed to the Serializer, a NullPointerException will be thrown.

SHORT static val SHORT: GroupSerializer<Short>

A predefined Serializer that handles non-null Short whereby Shorts are serialized to a 2 byte format. The Serializer also stores the Short's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Shorts using the original Short#hashCode() method.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

SHORT_ARRAY static val SHORT_ARRAY: GroupSerializer<ShortArray>
STRING static val STRING: GroupSerializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a UTF-8 encoded format. The Serializer also stores the String's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Strings using a specially tailored hash code method as opposed to the Serializer#STRING_ORIGHASH Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

STRING_ASCII static val STRING_ASCII: GroupSerializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a ASCII encoded format (8 bit character) which is faster than using a UTF-8 format. The Serializer also stores the String's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Strings using a specially tailored hash code method as opposed to the Serializer#STRING_ORIGHASH Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

STRING_DELTA static val STRING_DELTA: GroupSerializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a UTF-8 encoded format. The Serializer also stores the String's size, allowing it to be used as a GroupSerializer in BTreeMaps. Neighboring strings may be delta encoded for increased storage efficency.

This Serializer hashes Strings using a specially tailored hash code method as opposed to the Serializer#STRING_ORIGHASH Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

STRING_DELTA2 static val STRING_DELTA2: GroupSerializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a UTF-8 encoded format. The Serializer also stores the String's size, allowing it to be used as a GroupSerializer in BTreeMaps. Neighboring strings may be delta encoded for increased storage efficency.

This Serializer hashes Strings using a specially tailored hash code method as opposed to the Serializer#STRING_ORIGHASH Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

STRING_INTERN static val STRING_INTERN: GroupSerializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a UTF-8 encoded format. The Serializer also stores the String's size, allowing it to be used as a GroupSerializer in BTreeMaps. Neighboring strings may be delta encoded for increased storage efficency.

Deserialized strings are automatically interned String#intern() allowing a more heap space efficient storage for repeated strings.

This Serializer hashes Strings using a specially tailored hash code method as opposed to the Serializer#STRING_ORIGHASH Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

STRING_NOSIZE static val STRING_NOSIZE: Serializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a UTF-8 encoded format. The Serializer does not store the String's size, thereby preventing it from being used as a GroupSerializer.

This Serializer hashes Strings using the original hash code method as opposed to the Serializer#STRING Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

STRING_ORIGHASH static val STRING_ORIGHASH: GroupSerializer<String>

A predefined Serializer that handles non-null String whereby Strings are serialized to a UTF-8 encoded format. The Serializer also stores the String's size, allowing it to be used as a GroupSerializer in BTreeMaps.

This Serializer hashes Strings using the original hash code method as opposed to the Serializer#STRING Serializer.

If a null value is passed to the Serializer, a NullPointerException will be thrown.

UUID static val UUID: GroupSerializer<UUID>

Serializers java.util.UUID class

Functions

deserialize open fun deserialize(input: DataInput2, available: Int): Node
isTrusted open fun isTrusted(): Boolean
serialize open fun serialize(out: DataOutput2, value: Node): Unit

Inherited Functions

deserializeFromLong open fun deserializeFromLong(input: Long, available: Int): A

Deserializes and returns the content of the given long.

fixedSize open fun fixedSize(): Int

Returns the fixed size of the serialized form in bytes or -1 if the size is not fixed (e.g. for Strings).

Some optimizations can be applied to serializers with a fixed size.

needsAvailableSizeHint open fun needsAvailableSizeHint(): Boolean

TODO: Document this method