Package org.apache.flink.runtime.state.ttl

Class TtlAwareSerializerSnapshot<T>

java.lang.Object

org.apache.flink.runtime.state.ttl.TtlAwareSerializerSnapshot<T>

All Implemented Interfaces:

org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

public class TtlAwareSerializerSnapshot<T>
extends Object
implements org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

A TypeSerializerSnapshot for TtlAwareSerializer. This class wraps a TypeSerializerSnapshot with ttl awareness. It will return true when the wrapped TypeSerializerSnapshot is the instance of TtlStateFactory.TtlSerializerSnapshot. Also, it overrides the compatibility type check between TtlSerializerSnapshot and non-ttl TypeSerializerSnapshot.

If two TtlAwareSerializerSnapshots have the same ttl config, it will return the compatibility check result of the original TypeSerializerSnapshot.

If two TtlAwareSerializerSnapshots have different ttl config, it will return a wrapped compatibility check result.

Constructor Summary

Constructors

Constructor	Description
TtlAwareSerializerSnapshot()
TtlAwareSerializerSnapshot(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> typeSerializerSnapshot)
TtlAwareSerializerSnapshot(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> typeSerializerSnapshot, boolean isTtlEnabled)

Method Summary

Modifier and Type	Method	Description
int	getCurrentVersion()
org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>	getOrinalTypeSerializerSnapshot()
boolean	isTtlEnabled()
void	readSnapshot(int readVersion, org.apache.flink.core.memory.DataInputView in, ClassLoader userCodeClassLoader)
org.apache.flink.api.common.typeutils.TypeSerializerSchemaCompatibility<T>	resolveSchemaCompatibility(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> oldSerializerSnapshot)
org.apache.flink.api.common.typeutils.TypeSerializer<T>	restoreSerializer()
void	writeSnapshot(org.apache.flink.core.memory.DataOutputView out)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TtlAwareSerializerSnapshot

public TtlAwareSerializerSnapshot()

TtlAwareSerializerSnapshot

public TtlAwareSerializerSnapshot(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> typeSerializerSnapshot,
 boolean isTtlEnabled)

TtlAwareSerializerSnapshot

public TtlAwareSerializerSnapshot(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> typeSerializerSnapshot)

Method Details

getCurrentVersion

public int getCurrentVersion()

Specified by:

getCurrentVersion in interface org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

writeSnapshot

public void writeSnapshot(org.apache.flink.core.memory.DataOutputView out)
                   throws IOException

Specified by:

writeSnapshot in interface org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

Throws:

IOException

readSnapshot

public void readSnapshot(int readVersion,
 org.apache.flink.core.memory.DataInputView in,
 ClassLoader userCodeClassLoader)
                  throws IOException

Specified by:

readSnapshot in interface org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

Throws:

IOException

restoreSerializer

public org.apache.flink.api.common.typeutils.TypeSerializer<T> restoreSerializer()

Specified by:

restoreSerializer in interface org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

resolveSchemaCompatibility

public org.apache.flink.api.common.typeutils.TypeSerializerSchemaCompatibility<T> resolveSchemaCompatibility(org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> oldSerializerSnapshot)

Specified by:

resolveSchemaCompatibility in interface org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T>

isTtlEnabled

public boolean isTtlEnabled()

getOrinalTypeSerializerSnapshot

public org.apache.flink.api.common.typeutils.TypeSerializerSnapshot<T> getOrinalTypeSerializerSnapshot()