public class LocalDateTimeCodec extends TypeCodec<LocalDateTime>
TypeCodec
that maps LocalDateTime
to CQL timestamp
, allowing
the setting and retrieval of timestamp
columns as LocalDateTime
instances.
IMPORTANT
1) The default timestamp formatter used by this codec produces CQL literals that may include milliseconds. This literal format is incompatible with Cassandra < 2.0.9.
2) Even if the ISO-8601 standard accepts timestamps with nanosecond precision, Cassandra
timestamps have millisecond precision; therefore, any sub-millisecond value set on a LocalDateTime
will be lost when persisted to Cassandra.
TypeCodec.AbstractCollectionCodec<E,C extends Collection<E>>, TypeCodec.AbstractMapCodec<K,V>, TypeCodec.AbstractTupleCodec<T>, TypeCodec.AbstractUDTCodec<T>, TypeCodec.PrimitiveBooleanCodec, TypeCodec.PrimitiveByteCodec, TypeCodec.PrimitiveDoubleCodec, TypeCodec.PrimitiveFloatCodec, TypeCodec.PrimitiveIntCodec, TypeCodec.PrimitiveLongCodec, TypeCodec.PrimitiveShortCodec
Modifier and Type | Field and Description |
---|---|
static LocalDateTimeCodec |
instance |
Modifier and Type | Method and Description |
---|---|
LocalDateTime |
deserialize(ByteBuffer bytes,
ProtocolVersion protocolVersion)
Deserialize the given
ByteBuffer instance according to the CQL type handled by this
codec. |
String |
format(LocalDateTime value)
Format the given value as a valid CQL literal according to the CQL type handled by this codec.
|
LocalDateTime |
parse(String value)
Parse the given CQL literal into an instance of the Java type handled by this codec.
|
ByteBuffer |
serialize(LocalDateTime value,
ProtocolVersion protocolVersion)
Serialize the given value according to the CQL type handled by this codec.
|
accepts, accepts, accepts, accepts, ascii, bigint, blob, cboolean, cdouble, cfloat, cint, counter, custom, date, decimal, duration, getCqlType, getJavaType, inet, list, map, set, smallInt, time, timestamp, timeUUID, tinyInt, toString, tuple, userType, uuid, varchar, varint
public static final LocalDateTimeCodec instance
public ByteBuffer serialize(LocalDateTime value, ProtocolVersion protocolVersion)
TypeCodec
Implementation notes:
null
input as the equivalent of an
empty collection.
serialize
in class TypeCodec<LocalDateTime>
value
- An instance of T; may be null
.protocolVersion
- the protocol version to use when serializing bytes
. In most
cases, the proper value to provide for this argument is the value returned by ProtocolOptions.getProtocolVersion()
(which is the protocol version in use by the driver).ByteBuffer
instance containing the serialized form of Tpublic LocalDateTime deserialize(ByteBuffer bytes, ProtocolVersion protocolVersion)
TypeCodec
ByteBuffer
instance according to the CQL type handled by this
codec.
Implementation notes:
null
or a default value for the corresponding Java type, if
applicable;
null
; they should return
empty collections instead (the driver's default collection codecs all comply with this
rule).
ByteBuffer
should never be consumed by read operations that modify
its current position; if necessary, ByteBuffer.duplicate()
duplicate} it before
consuming.
deserialize
in class TypeCodec<LocalDateTime>
bytes
- A ByteBuffer
instance containing the serialized form of T; may be null
or empty.protocolVersion
- the protocol version to use when serializing bytes
. In most
cases, the proper value to provide for this argument is the value returned by ProtocolOptions.getProtocolVersion()
(which is the protocol version in use by the driver).public String format(LocalDateTime value)
TypeCodec
Implementors should take care of quoting and escaping the resulting CQL literal where
applicable. Null values should be accepted; in most cases, implementations should return the
CQL keyword "NULL"
for null
inputs.
Implementing this method is not strictly mandatory. It is used:
BuiltStatement
for a detailed explanation of when
this happens);
QueryLogger
, if parameter logging is enabled;
AggregateMetadata.asCQLQuery(boolean)
;
toString()
implementation of some objects (UDTValue
, TupleValue
, and the internal representation of a ROWS
response), which may
appear in driver logs.
format
in class TypeCodec<LocalDateTime>
value
- An instance of T; may be null
.public LocalDateTime parse(String value)
TypeCodec
Implementors should take care of unquoting and unescaping the given CQL string where
applicable. Null values and empty Strings should be accepted, as well as the string "NULL"
; in most cases, implementations should interpret these inputs has equivalent to a
null
reference.
Implementing this method is not strictly mandatory: internally, the driver only uses it to parse the INITCOND when building the metadata of an aggregate function (and in most cases it will use a built-in codec, unless the INITCOND has a custom type).
parse
in class TypeCodec<LocalDateTime>
value
- The CQL string to parse, may be null
or empty.null
on a null input
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