io.cdap.cdap.api.dataset.lib

Enum DynamicPartitioner.PartitionWriteOption

java.lang.Object

java.lang.Enum<DynamicPartitioner.PartitionWriteOption>

io.cdap.cdap.api.dataset.lib.DynamicPartitioner.PartitionWriteOption

All Implemented Interfaces:

Serializable, Comparable<DynamicPartitioner.PartitionWriteOption>

Enclosing class:

DynamicPartitioner<K,V>

public static enum DynamicPartitioner.PartitionWriteOption
extends Enum<DynamicPartitioner.PartitionWriteOption>

Defines options for when writing to a partition.

Enum Constant Summary

Enum Constants

Enum Constant and Description
CREATE Will only allow writing to a new partition.
CREATE_OR_APPEND Allows appending to an existing partition.
CREATE_OR_OVERWRITE Overwrites the existing partition being written to.

Method Summary

Modifier and Type	Method and Description
static DynamicPartitioner.PartitionWriteOption	valueOf(String name) Returns the enum constant of this type with the specified name.
static DynamicPartitioner.PartitionWriteOption[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

CREATE

public static final DynamicPartitioner.PartitionWriteOption CREATE

Will only allow writing to a new partition. If an attempt is made to write to a previously-existing partition, a DataSetException will be thrown.

CREATE_OR_APPEND

public static final DynamicPartitioner.PartitionWriteOption CREATE_OR_APPEND

Allows appending to an existing partition. If the partition does not already exist, it will be created. Existing partition's metadata is merged with the appending partition's metadata, with the appending partition's metadata taking precedence if keys conflict.

CREATE_OR_OVERWRITE

public static final DynamicPartitioner.PartitionWriteOption CREATE_OR_OVERWRITE

Overwrites the existing partition being written to. It's contents as well as any related metadata will be overwritten. If the partition does not already exist, it will be created.

Method Detail

values

public static DynamicPartitioner.PartitionWriteOption[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DynamicPartitioner.PartitionWriteOption c : DynamicPartitioner.PartitionWriteOption.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DynamicPartitioner.PartitionWriteOption valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null