software.amazon.awssdk.enhanced.dynamodb.mapper

Class StaticAttributeTags

java.lang.Object

software.amazon.awssdk.enhanced.dynamodb.mapper.StaticAttributeTags

@ThreadSafe
public final class StaticAttributeTags
extends Object

Common implementations of StaticAttributeTag. These tags can be used to mark your attributes as having certain characteristics or features, such as primary or secondary keys in your StaticTableSchema definitions.

Method Summary

Modifier and Type	Method and Description
static StaticAttributeTag	atomicCounter() Used to explicitly designate an attribute to be a default auto-generated, increasing counter updated unconditionally in DynamoDB.
static StaticAttributeTag	atomicCounter(long delta, long startValue) Used to explicitly designate an attribute to be an auto-generated counter updated unconditionally in DynamoDB.
static StaticAttributeTag	primaryPartitionKey() Marks an attribute as being the primary partition key of the table it participates in.
static StaticAttributeTag	primarySortKey() Marks an attribute as being the primary sort key of the table it participates in.
static StaticAttributeTag	secondaryPartitionKey(Collection<String> indexNames) Marks an attribute as being a partition key for multiple secondary indices.
static StaticAttributeTag	secondaryPartitionKey(String indexName) Marks an attribute as being a partition key for a secondary index.
static StaticAttributeTag	secondarySortKey(Collection<String> indexNames) Marks an attribute as being a sort key for multiple secondary indices.
static StaticAttributeTag	secondarySortKey(String indexName) Marks an attribute as being a sort key for a secondary index.
static StaticAttributeTag	updateBehavior(UpdateBehavior updateBehavior) Specifies the behavior when this attribute is updated as part of an 'update' operation such as UpdateItem.

Methods inherited from class java.lang.Object

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

Method Detail

primaryPartitionKey

public static StaticAttributeTag primaryPartitionKey()

Marks an attribute as being the primary partition key of the table it participates in. Only one attribute can be marked this way in a given table schema.

primarySortKey

public static StaticAttributeTag primarySortKey()

Marks an attribute as being the primary sort key of the table it participates in. Only one attribute can be marked this way in a given table schema.

secondaryPartitionKey

public static StaticAttributeTag secondaryPartitionKey(String indexName)

Marks an attribute as being a partition key for a secondary index.

Parameters:

indexName - The name of the index this key participates in.

secondaryPartitionKey

public static StaticAttributeTag secondaryPartitionKey(Collection<String> indexNames)

Marks an attribute as being a partition key for multiple secondary indices.

Parameters:

indexNames - The names of the indices this key participates in.

secondarySortKey

public static StaticAttributeTag secondarySortKey(String indexName)

Marks an attribute as being a sort key for a secondary index.

Parameters:

indexName - The name of the index this key participates in.

secondarySortKey

public static StaticAttributeTag secondarySortKey(Collection<String> indexNames)

Marks an attribute as being a sort key for multiple secondary indices.

Parameters:

indexNames - The names of the indices this key participates in.

updateBehavior

public static StaticAttributeTag updateBehavior(UpdateBehavior updateBehavior)

Specifies the behavior when this attribute is updated as part of an 'update' operation such as UpdateItem. See documentation of UpdateBehavior for details on the different behaviors supported and the default behavior.

Parameters:

updateBehavior - The UpdateBehavior to be applied to this attribute

atomicCounter

public static StaticAttributeTag atomicCounter(long delta,
                                               long startValue)

Used to explicitly designate an attribute to be an auto-generated counter updated unconditionally in DynamoDB. By supplying a negative integer delta value, the attribute works as a decreasing counter.

Parameters:

delta - The value to increment (positive) or decrement (negative) the counter with for each update.

startValue - The starting value of the counter.

atomicCounter

public static StaticAttributeTag atomicCounter()

Used to explicitly designate an attribute to be a default auto-generated, increasing counter updated unconditionally in DynamoDB. The counter will have 0 as its first written value and increment with 1 for each subsequent calls to updateItem.