Attribute

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This page lists the Java SDK names for Attributes. The doc comment of each API gives its parameters, defaults, and errors. Read them in the Java SDK API reference.

API names

Task	Java API	Dex behavior
Define a singleton Attribute	Attribute.define	Attributes
Define an AttributeMap	AttributeMap.define	Attributes
Declare it in the Flow	PersistenceSchema.of, returned from getPersistenceSchema	Flow definition
Read, write, and delete a value in a Step or RPC	get, set, and delete	Commits
Address one AttributeMap instance	AttributeMap.instance, or the instance key argument of get, set, and delete	Attributes
Count AttributeMap instances and list their keys	AttributeMap.getMapSize and AttributeMap.getAllInstanceKeys	Selective state loading
Load AttributeMap values for a method	addWaitForLoadAttributeMap, addExecuteLoadAttributeMap, and their instance variants of StepOptions.Builder, or loadAttributeMaps and loadAttributeMapInstances of @RPC	Selective state loading
Lock a value for a read-modify-write	AttributeLock.of, with addWaitForLock and addExecuteLock of StepOptions.Builder, or lockAttributes and lockAttributeMaps of @RPC	Locks
Index a value for search	AttributeIndex and AttributeIndex.Type, passed to define	Indexes
Project writes to an Attribute Store	syncToAttributeStore	Attribute sync
Store a value that can be erased	hardDeleteOnNull	Hard-delete Attributes
Set a value when the Flow starts	StartFlowOptions.Builder.addAttribute	Attributes at start
Read values from outside the Flow	Client.getAttributes	Read Attributes
Wait until a value matches	Client.waitForAttributeMatch, with AttributeMatch	Wait for an Attribute match

Example

Example: examples/java/src/main/java/io/superdurable/dex/primitives/attribute/AttributeFlow.java