com.google.cloud.bigquery

Class TimePartitioning

java.lang.Object

com.google.cloud.bigquery.TimePartitioning

All Implemented Interfaces:

Serializable

public final class TimePartitioning
extends Object
implements Serializable

Objects of this class allow to configure table partitioning based on time. By dividing a large table into smaller partitions, you can improve query performance and reduce the number of bytes billed by restricting the amount of data scanned.

See Also:

Partitioned Tables, Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TimePartitioning.Type The type of time partitioning.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object obj)
Long	expirationMs() Returns the number of milliseconds for which to keep the storage for a partition.
int	hashCode()
static TimePartitioning	of(TimePartitioning.Type type) Returns a TimePartitioning object given the time partitioning type.
static TimePartitioning	of(TimePartitioning.Type type, long expirationMs) Returns a TimePartitioning object given the time partitioning type and the partition's expiration in milliseconds.
String	toString()
TimePartitioning.Type	type() Returns the time partitioning type.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

type

public TimePartitioning.Type type()

Returns the time partitioning type. Currently, the only type supported is TimePartitioning.Type.DAY, which will generate one partition per day based on data loading time.

expirationMs

public Long expirationMs()

Returns the number of milliseconds for which to keep the storage for a partition. When expired, the storage for the partition is reclaimed.

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

of

public static TimePartitioning of(TimePartitioning.Type type)

Returns a TimePartitioning object given the time partitioning type. Currently, the only type supported is TimePartitioning.Type.DAY, which will generate one partition per day based on data loading time.

of

public static TimePartitioning of(TimePartitioning.Type type,
                  long expirationMs)

Returns a TimePartitioning object given the time partitioning type and the partition's expiration in milliseconds.

Parameters:

type - the time partitioning type. Currently, the only type supported is TimePartitioning.Type.DAY, which will generate one partition per day based on data loading time.

expirationMs - the number of milliseconds for which to keep the storage for a partition