Adding and Editing Data

Exposes functionality that allows you to perform multiple operations on the store within a single write transaction.

You must use the scoped method to get collection-scoped access to the write transaction object, which will then allow you to perform insert, update, remove or evict operations using the write transaction.

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@interface DITWriteTransaction : NSObject

Defines the various strategies available when inserting a document into a collection.

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enum DITWriteStrategy : NSUInteger {}

Exposes functionality that allows you to perform multiple operations on the store within a single write transaction.

A DITScopedWriteTransaction is scoped to a specific collection, obtained by calling scoped on a DITWriteTransaction.

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@interface DITScopedWriteTransaction : NSObject

These objects are returned when using find and findAll functionality on DITScopedWriteTransactions.

You can use them to perform updates on documents and remove or evict documents.

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@interface DITWriteTransactionPendingCursorOperation : NSObject

These objects are returned when using findByID functionality on DITScopedWriteTransactions.

You can use them to perform updates on a document and remove or evict a document.

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@interface DITWriteTransactionPendingIDSpecificOperation : NSObject

These objects are returned when calling collections on DITStore.

They allow chaining of further collections-related functions. You can either call exec on the object to get an array of DITCollections as an immediate return value, or you can establish either a live query or a subscription, which both work over time.

A live query, established by calling observe, will notify you every time there’s a change in the collections that the device knows about.

A subscription, established by calling subscribe, will act as a signal to other peers that you would like to receive updates from them about the collections that they know about.

Calling observe will generate both a subscription and a live query at the same time.

If you’d like to only observe local changes then you can call observeLocal.

If you want to observe changes in such a way that you can signal when you’re ready for the live query to deliver a new update then you can call observeWithNextSignal or observeLocalWithNextSignal.

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@interface DITPendingCollectionsOperation : NSObject

Provides information about a successful update operation on a document.

The update result can be one of the following types:

• set
• removed
• replacedWithCounter
• incremented
• pushed
• popped
• inserted

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@interface DITUpdateResult : NSObject

The types of update result.

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enum DITUpdateResultType : NSUInteger {}

Provides information about the result of an operation on a document that was part of a write transaction.

The write transaction result can be one of the following types:

• inserted
• removed
• evicted
• updated

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@interface DITWriteTransactionResult : NSObject

The types of write transaction results.

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enum DITWriteTransactionResultType : NSUInteger {}