org.apache.gobblin.util.filesystem

Class ModTimeDataFileVersionStrategy

java.lang.Object

org.apache.gobblin.util.filesystem.ModTimeDataFileVersionStrategy

All Implemented Interfaces:

DataFileVersionStrategy<Long>

public class ModTimeDataFileVersionStrategy
extends Object
implements DataFileVersionStrategy<Long>

An implementation of DataFileVersionStrategy that uses modtime as the file version. This is the default implementation and does data comparisons purely based on modification time.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ModTimeDataFileVersionStrategy.Factory

Nested classes/interfaces inherited from interface org.apache.gobblin.util.filesystem.DataFileVersionStrategy

DataFileVersionStrategy.Characteristic, DataFileVersionStrategy.DataFileVersionFactory<T extends Comparable<T> & Serializable>

Field Summary

Fields inherited from interface org.apache.gobblin.util.filesystem.DataFileVersionStrategy

DATA_FILE_VERSION_STRATEGY_KEY, DEFAULT_DATA_FILE_VERSION_STRATEGY

Constructor Summary

Constructors

Constructor and Description
ModTimeDataFileVersionStrategy()

Method Summary

Modifier and Type	Method and Description
Set<DataFileVersionStrategy.Characteristic>	applicableCharacteristics()
Long	getVersion(org.apache.hadoop.fs.Path path) Get the version of a path.
boolean	setDefaultVersion(org.apache.hadoop.fs.Path path) Set the version of a path to a value automatically set by the versioning system.
boolean	setVersion(org.apache.hadoop.fs.Path path, Long version) Set the version of a path to a specific version (generally replicated from another path).

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.gobblin.util.filesystem.DataFileVersionStrategy

hasCharacteristic, instantiateDataFileVersionStrategy

Constructor Detail

ModTimeDataFileVersionStrategy

public ModTimeDataFileVersionStrategy()

Method Detail

getVersion

public Long getVersion(org.apache.hadoop.fs.Path path)
                throws IOException

Description copied from interface: DataFileVersionStrategy

Get the version of a path.

Specified by:

getVersion in interface DataFileVersionStrategy<Long>

Throws:

IOException

setVersion

public boolean setVersion(org.apache.hadoop.fs.Path path,
                          Long version)

Description copied from interface: DataFileVersionStrategy

Set the version of a path to a specific version (generally replicated from another path).

Specified by:

setVersion in interface DataFileVersionStrategy<Long>

Returns:

false if the version is not settable.

setDefaultVersion

public boolean setDefaultVersion(org.apache.hadoop.fs.Path path)

Description copied from interface: DataFileVersionStrategy

Set the version of a path to a value automatically set by the versioning system. Note this call must respect the monotonicity requirement.

Specified by:

setDefaultVersion in interface DataFileVersionStrategy<Long>

Returns:

false if the version is not settable.

applicableCharacteristics

public Set<DataFileVersionStrategy.Characteristic> applicableCharacteristics()

Specified by:

applicableCharacteristics in interface DataFileVersionStrategy<Long>

Returns:

The list of optional characteristics this DataFileVersionStrategy satisfies.