public class BaseMapSerializer extends TypeSerializer<BaseMap>
BaseMap
.Modifier and Type | Class and Description |
---|---|
static class |
BaseMapSerializer.BaseMapSerializerSnapshot
|
Constructor and Description |
---|
BaseMapSerializer(LogicalType keyType,
LogicalType valueType,
ExecutionConfig conf) |
Modifier and Type | Method and Description |
---|---|
BaseMap |
copy(BaseMap from)
NOTE: Map should be a HashMap, when we insert the key/value pairs of the TreeMap into
a HashMap, problems maybe occur.
|
BaseMap |
copy(BaseMap from,
BaseMap reuse)
Creates a copy from the given element.
|
void |
copy(DataInputView source,
DataOutputView target)
Copies exactly one record from the source input view to the target output view.
|
BaseMap |
createInstance()
Creates a new instance of the data type.
|
BaseMap |
deserialize(BaseMap reuse,
DataInputView source)
De-serializes a record from the given source input view into the given reuse record instance if mutable.
|
BaseMap |
deserialize(DataInputView source)
De-serializes a record from the given source input view.
|
TypeSerializer<BaseMap> |
duplicate()
Creates a deep copy of this serializer if it is necessary, i.e.
|
boolean |
equals(Object o) |
TypeSerializer |
getKeySerializer() |
int |
getLength()
Gets the length of the data type, if it is a fix length data type.
|
TypeSerializer |
getValueSerializer() |
int |
hashCode() |
boolean |
isImmutableType()
Gets whether the type is an immutable type.
|
void |
serialize(BaseMap record,
DataOutputView target)
Serializes the given record to the given target output view.
|
TypeSerializerSnapshot<BaseMap> |
snapshotConfiguration()
Snapshots the configuration of this TypeSerializer.
|
BinaryMap |
toBinaryMap(BaseMap from) |
public BaseMapSerializer(LogicalType keyType, LogicalType valueType, ExecutionConfig conf)
public boolean isImmutableType()
TypeSerializer
isImmutableType
in class TypeSerializer<BaseMap>
public TypeSerializer<BaseMap> duplicate()
TypeSerializer
duplicate
in class TypeSerializer<BaseMap>
public BaseMap createInstance()
TypeSerializer
createInstance
in class TypeSerializer<BaseMap>
public BaseMap copy(BaseMap from)
copy
in class TypeSerializer<BaseMap>
from
- The element reuse be copied.public BaseMap copy(BaseMap from, BaseMap reuse)
TypeSerializer
copy
in class TypeSerializer<BaseMap>
from
- The element to be copied.reuse
- The element to be reused. May or may not be used.public int getLength()
TypeSerializer
getLength
in class TypeSerializer<BaseMap>
-1
for variable length data types.public void serialize(BaseMap record, DataOutputView target) throws IOException
TypeSerializer
serialize
in class TypeSerializer<BaseMap>
record
- The record to serialize.target
- The output view to write the serialized data to.IOException
- Thrown, if the serialization encountered an I/O related error. Typically raised by the
output view, which may have an underlying I/O channel to which it delegates.public BaseMap deserialize(DataInputView source) throws IOException
TypeSerializer
deserialize
in class TypeSerializer<BaseMap>
source
- The input view from which to read the data.IOException
- Thrown, if the de-serialization encountered an I/O related error. Typically raised by the
input view, which may have an underlying I/O channel from which it reads.public BaseMap deserialize(BaseMap reuse, DataInputView source) throws IOException
TypeSerializer
deserialize
in class TypeSerializer<BaseMap>
reuse
- The record instance into which to de-serialize the data.source
- The input view from which to read the data.IOException
- Thrown, if the de-serialization encountered an I/O related error. Typically raised by the
input view, which may have an underlying I/O channel from which it reads.public void copy(DataInputView source, DataOutputView target) throws IOException
TypeSerializer
target.write(source, 8);
.copy
in class TypeSerializer<BaseMap>
source
- The input view from which to read the record.target
- The target output view to which to write the record.IOException
- Thrown if any of the two views raises an exception.public boolean equals(Object o)
equals
in class TypeSerializer<BaseMap>
public int hashCode()
hashCode
in class TypeSerializer<BaseMap>
@VisibleForTesting public TypeSerializer getKeySerializer()
@VisibleForTesting public TypeSerializer getValueSerializer()
public TypeSerializerSnapshot<BaseMap> snapshotConfiguration()
TypeSerializer
The snapshot of the TypeSerializer is supposed to contain all information that affects the serialization format of the serializer. The snapshot serves two purposes: First, to reproduce the serializer when the checkpoint/savepoint is restored, and second, to check whether the serialization format is compatible with the serializer used in the restored program.
IMPORTANT: TypeSerializerSnapshots changed after Flink 1.6. Serializers implemented against Flink versions up to 1.6 should still work, but adjust to new model to enable state evolution and be future-proof. See the class-level comments, section "Upgrading TypeSerializers to the new TypeSerializerSnapshot model" for details.
snapshotConfiguration
in class TypeSerializer<BaseMap>
null
).TypeSerializerSnapshot.resolveSchemaCompatibility(TypeSerializer)
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