software.amazon.awssdk.enhanced.dynamodb.model

Class ConditionCheck<T>

java.lang.Object

software.amazon.awssdk.enhanced.dynamodb.model.ConditionCheck<T>

Type Parameters:

T - The type of the modelled object.

All Implemented Interfaces:

TransactableWriteOperation<T>

public final class ConditionCheck<T>
extends Object
implements TransactableWriteOperation<T>

Use ConditionCheck as a part of the composite operation transactGetItems (for example DynamoDbEnhancedClient.transactGetItems(TransactGetItemsEnhancedRequest)) to determine if the other actions that are part of the same transaction should take effect.

A valid ConditionCheck object should contain a reference to the primary key of the table that finds items with a matching key, together with a condition (of type Expression) to evaluate the primary key.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ConditionCheck.Builder A builder that is used to create a condition check with the desired parameters.

Method Summary

Modifier and Type	Method and Description
static ConditionCheck.Builder	builder() Creates a newly initialized builder for this object.
Expression	conditionExpression() Returns the condition Expression set on this object, or null if it doesn't exist.
boolean	equals(Object o)
TransactWriteItem	generateTransactWriteItem(TableSchema<T> tableSchema, OperationContext operationContext, DynamoDbEnhancedClientExtension dynamoDbEnhancedClientExtension)
int	hashCode()
Key	key() Returns the primary Key that the condition is valid for, or null if it doesn't exist.
ConditionCheck.Builder	toBuilder() Returns a builder initialized with all existing values on the object.

Methods inherited from class java.lang.Object

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

Method Detail

builder

public static ConditionCheck.Builder builder()

Creates a newly initialized builder for this object.

toBuilder

public ConditionCheck.Builder toBuilder()

Returns a builder initialized with all existing values on the object.

generateTransactWriteItem

public TransactWriteItem generateTransactWriteItem(TableSchema<T> tableSchema,
                                                   OperationContext operationContext,
                                                   DynamoDbEnhancedClientExtension dynamoDbEnhancedClientExtension)

Specified by:

generateTransactWriteItem in interface TransactableWriteOperation<T>

key

public Key key()

Returns the primary Key that the condition is valid for, or null if it doesn't exist.

conditionExpression

public Expression conditionExpression()

Returns the condition Expression set on this object, or null if it doesn't exist.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object