AGSMosaicDatasetRaster Class Reference

Description

A mosaic dataset raster.

An instance of this class represents a mosaic dataset raster. A mosaic dataset allows you to store, manage, view, and query collections of raster and image data. It is a data model within the geodatabase used to manage a collection of raster datasets (images) stored as a catalog and viewed as a mosaicked image. Mosaic datasets have advanced raster querying capabilities and processing functions.

A mosaic dataset is created in a geodatabase and can have raster datasets added to it directly. The raster data in a mosaic dataset does not have to be adjoining or overlapping but can exist as unconnected, discontinuous datasets. For example, you can have images that completely cover an area or you can have many strips of images that may not join together to form a continuous image (such as along pipelines).

A mosaic dataset raster can be displayed on screen in a 2D map or a 3D scene using an AGSRasterLayer.

Since

100

License Restrictions:

This feature requires a Standard license for production deployment. No license required in Developer mode for testing.

Inheritance diagram for AGSMosaicDatasetRaster:

Instance Methods
(id< AGSCancelable >)	- addRasters:completion:
(void)	- cancelLoad
(void)	- doCancelLoading
(void)	- doStartLoading:
(instancetype)	- initWithFileURL:
(instancetype)	- initWithFileURL:name:
(instancetype)	- initWithName:extension:
(instancetype)	- initWithRasterFunction:
(void)	- loadDidFinishWithError:
(void)	- loadWithCompletion:
(void)	- onLoadStatusChanged
(void)	- retryLoadWithCompletion:

Class Methods
(AGSMosaicDatasetRaster *)	+ createMosaicDatasetRasterWithDatabaseAtFileURL:name:spatialReference:
(AGSMosaicDatasetRaster *)	+ createMosaicDatasetRasterWithGeodatabase:name:spatialReference:
(NSArray< NSString * > *)	+ mosaicDatasetRasterNamesFromDatabaseAtFileURL:
(instancetype)	+ mosaicDatasetRasterWithFileURL:name:
(instancetype)	+ rasterWithFileURL:
(instancetype)	+ rasterWithName:extension:
(instancetype)	+ rasterWithRasterFunction:
(void)	+ removeMosaicDatasetRasterWithName:fromGeodatabase:

Properties
NSURL *	fileURL
AGSRasterFunction *	function
NSError *	loadError
AGSLoadStatus	loadStatus

Method Documentation

addRasters:completion:

- (id<AGSCancelable>) addRasters:		(AGSAddRastersParameters *)	parameters
completion:		(nullable void(^)(NSError *__nullable error))	completion

Add individual rasters to the mosaic dataset raster

Parameters

parameters	specifiying which rasters to add
completion	block that is invoked when the operation completes. The error is populated only if the operation fails.

Since

100

cancelLoad

- (void) cancelLoad

requiredinherited

Cancels loading if it is in progress, otherwise it does nothing. This should be called carefully because other objects could be waiting for loadWithCompletion: or retryLoadWithCompletion: to complete and this will call them all back with the error of NSUserCancelledError

Since

100

createMosaicDatasetRasterWithDatabaseAtFileURL:name:spatialReference:

+ (AGSMosaicDatasetRaster *) createMosaicDatasetRasterWithDatabaseAtFileURL:		(NSURL *)	fileURL
name:		(NSString *)	name
spatialReference:		(AGSSpatialReference *)	spatialReference

Create a new mosaic dataset raster

Parameters

fileURL	to the geodatabase in which the new mosaic dataset raster needs to be created
name	of the new mosaic dataset raster to be created
spatialReference	of the new mosaic dataset raster to be created

Since

100

createMosaicDatasetRasterWithGeodatabase:name:spatialReference:

+ (AGSMosaicDatasetRaster *) createMosaicDatasetRasterWithGeodatabase:		(AGSGeodatabase *)	geodatabase
name:		(NSString *)	name
spatialReference:		(AGSSpatialReference *)	spatialReference

Create a new mosaic dataset raster

Parameters

geodatabase	in which the new mosaic dataset raster needs to be created
name	of the new mosaic dataset raster to be created
spatialReference	of the new mosaic dataset raster to be created

Since

100

doCancelLoading

- (void) doCancelLoading

Never call this method directly. The framework calls this method on a background thread when cancelLoad (AGSLoadable-p) is called. It is meant to be overriden by subclasses. Subclasses should override this method to cancel loading their data and call loadDidFinishWithError: (AGSLoadableBase(ForSubclassEyesOnly)) at the end passing in an error representing NSUserCancelledError.

Since

100

Provided by category AGSLoadableBase(ForSubclassEyesOnly).

doStartLoading:

- (void) doStartLoading:

(BOOL)

retrying

Never call this method directly. The framework calls this method on a background thread when loadWithCompletion: (AGSLoadable-p) or retryLoadWithCompletion: (AGSLoadable-p) is called. It is meant to be overriden by subclasses. Subclasses should override this method to load their data and call loadDidFinishWithError: (AGSLoadableBase(ForSubclassEyesOnly)) upon completion, passing in the error if any.

Parameters

retrying

flag that is true if this method was called from retryLoadWithCompletion: (AGSLoadable-p).

Since

100

Provided by category AGSLoadableBase(ForSubclassEyesOnly).

initWithFileURL:name:

- (instancetype) initWithFileURL:		(NSURL *)	fileURL
name:		(NSString *)	name

Initialize a mosaic dataset raster using the provided details

Parameters

fileURL	to the geodatabase containing the mosaic dataset
name	of the mosaic dataset within the geodatabase

Since

100

Returns

Initialized mosaic dataset raster

loadDidFinishWithError:

- (void) loadDidFinishWithError:

(nullable NSError *)

error

Only subclasses should call this method in doStartLoading: (AGSLoadableBase(ForSubclassEyesOnly)) and doCancelLoading (AGSLoadableBase(ForSubclassEyesOnly)) when done loading or failed to load.

Since

100

Provided by category AGSLoadableBase(ForSubclassEyesOnly).

loadWithCompletion:

- (void) loadWithCompletion: (nullable void(^)(NSError *__nullable error))  completion

requiredinherited

Loads data for the object asynchronously. The completion block is invoked upon completion.

You can call this method any number of times, however only one attempt is made to load the data. If it is already loading, it will just continue to load (i.e. not force a reload). If it has already loaded successfully, the completion block will be invoked right away. If it has already failed to load, the completion block will be invoked right away with error previously encountered. This method supports multiple callers and will call them all back on completion. However, each caller's completion block will be invoked once and only once.

Parameters

completion

block that is invoked when object loads successfully or fails to load. An error is passed to the block if the object fails to load.

Note

The completion block is always invoked on the main thread.

Since

100

See also

- cancelLoad to cancel loading

- retryLoadWithCompletion: to force reload

mosaicDatasetRasterNamesFromDatabaseAtFileURL:

+ (NSArray<NSString*> *) mosaicDatasetRasterNamesFromDatabaseAtFileURL:

(NSURL *)

fileURL

Returns a list of mosaic dataset rasters in the given geodatabase

Parameters

fileURL

to the geodatabase

Returns

list of mosaic dataset raster names within the geodatabase

Since

100

mosaicDatasetRasterWithFileURL:name:

+ (instancetype) mosaicDatasetRasterWithFileURL:		(NSURL *)	fileURL
name:		(NSString *)	name

Initialize a mosaic dataset raster using the provided details

Parameters

fileURL	to the geodatabase containing the mosaic dataset
name	of the mosaic dataset within the geodatabase

Since

100

Returns

Initialized mosaic dataset raster

onLoadStatusChanged

- (void) onLoadStatusChanged

Never call this method directly. The framework calls this method on a background thread when AGSLoadable::loadStatus changes is called. Subclasses can optionally implement this to know when their loading status has changed.

Since

100

Provided by category AGSLoadableBase(ForSubclassEyesOnly).

removeMosaicDatasetRasterWithName:fromGeodatabase:

+ (void) removeMosaicDatasetRasterWithName:		(NSString *)	name
fromGeodatabase:		(AGSGeodatabase *)	geodatabase

Remove the specified mosaic dataset raster from the geodatabase

Parameters

name	of the mosaic dataset raster to remove
geodatabase	from which to remove the mosaic dataset raster

Since

100

retryLoadWithCompletion:

- (void) retryLoadWithCompletion: (nullable void(^)(NSError *__nullable error))  completion

requiredinherited

Tries to reload when an object has failed to load. This method should be called judiciously. It should be called when:

1. you didn't have network connectivity earlier when it failed and you want to retry now that you have connectivity
2. the server was down earlier when it failed and you want to retry
3. the request is taking too long and you want to cancel it and retry, in which case you will first call cancelLoad and then this method

If the data hasn't started loading, it will start loading. If it is already loading, it will just continue to load. If it has already loaded successfully, calls back right away. If it has already failed to load, tries again. This method supports multiple callers and will call them all back on completion. However, each caller's completion block will be invoked once and only once.

Parameters

completion

block that is invoked when object loads successfully or fails to load. An error is passed to the block if the object fails to load.

Note

The completion block is always invoked on the main thread.

Since

100

Property Documentation

fileURL

- (NSURL*) fileURL

readnonatomicstronginherited

File URL to the local raster dataset on disk

Since

100

function

- (AGSRasterFunction*) function

readnonatomicstronginherited

A function to transform the raster

Since

100

loadError

- (NSError*) loadError

readnonatomicstronginherited

The error that was encountered during the most recent load operation. Will be nil if the operation succeeded.

Since

100

loadStatus

- (AGSLoadStatus) loadStatus

readrequirednonatomicassigninherited

Status of the load operation.

Since

100