@Internal public class TupleSerializer<T extends Tuple> extends TupleSerializerBase<T>
arity, fieldSerializers, tupleClass| Constructor and Description |
|---|
TupleSerializer(Class<T> tupleClass,
TypeSerializer<?>[] fieldSerializers) |
| Modifier and Type | Method and Description |
|---|---|
T |
copy(T from)
Creates a deep copy of the given element in a new element.
|
T |
copy(T from,
T reuse)
Creates a copy from the given element.
|
T |
createInstance()
Creates a new instance of the data type.
|
T |
createInstance(Object[] fields) |
T |
createOrReuseInstance(Object[] fields,
T reuse) |
T |
deserialize(DataInputView source)
De-serializes a record from the given source input view.
|
T |
deserialize(T reuse,
DataInputView source)
De-serializes a record from the given source input view into the given reuse record instance
if mutable.
|
TupleSerializer<T> |
duplicate()
Creates a deep copy of this serializer if it is necessary, i.e.
|
void |
serialize(T value,
DataOutputView target)
Serializes the given record to the given target output view.
|
TypeSerializerSnapshot<T> |
snapshotConfiguration()
Snapshots the configuration of this TypeSerializer.
|
copy, equals, getArity, getFieldSerializers, getLength, getTupleClass, hashCode, isImmutableTypepublic TupleSerializer(Class<T> tupleClass, TypeSerializer<?>[] fieldSerializers)
public TupleSerializer<T> duplicate()
TypeSerializerWe need this because Serializers might be used in several threads. Stateless serializers are inherently thread-safe while stateful serializers might not be thread-safe.
duplicate in class TypeSerializer<T extends Tuple>public T createInstance()
TypeSerializercreateInstance in class TypeSerializer<T extends Tuple>public T createInstance(Object[] fields)
createInstance in class TupleSerializerBase<T extends Tuple>public T createOrReuseInstance(Object[] fields, T reuse)
createOrReuseInstance in class TupleSerializerBase<T extends Tuple>public T copy(T from)
TypeSerializercopy in class TypeSerializer<T extends Tuple>from - The element reuse be copied.public T copy(T from, T reuse)
TypeSerializercopy in class TypeSerializer<T extends Tuple>from - The element to be copied.reuse - The element to be reused. May or may not be used.public void serialize(T value, DataOutputView target) throws IOException
TypeSerializerserialize in class TypeSerializer<T extends Tuple>value - 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 T deserialize(DataInputView source) throws IOException
TypeSerializerdeserialize in class TypeSerializer<T extends Tuple>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 T deserialize(T reuse, DataInputView source) throws IOException
TypeSerializerdeserialize in class TypeSerializer<T extends Tuple>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 TypeSerializerSnapshot<T> snapshotConfiguration()
TypeSerializerThe 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<T extends Tuple>null).TypeSerializerSnapshot.resolveSchemaCompatibility(TypeSerializer)Copyright © 2014–2023 The Apache Software Foundation. All rights reserved.