Package sg.dex.starfish.impl.remote

Class RemoteDataAsset

java.lang.Object

sg.dex.starfish.impl.AAsset

sg.dex.starfish.impl.remote.ARemoteAsset

sg.dex.starfish.impl.remote.RemoteDataAsset

All Implemented Interfaces:

Asset, DataAsset

public class RemoteDataAsset
extends ARemoteAsset
implements DataAsset

Class representing a data asset managed via a remote agent. *

Version:

0.5

Author:

Mike

Field Summary

Fields inherited from class sg.dex.starfish.impl.remote.ARemoteAsset

remoteAgent

Fields inherited from class sg.dex.starfish.impl.AAsset

id, metadataString

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	RemoteDataAsset(String meta, RemoteAgent remoteAgent)

Method Summary

Modifier and Type	Method	Description
static RemoteDataAsset	create(RemoteAgent agent, String meta)	Creates a RemoteAsset with the given metadata on the specified remote agent
long	getContentSize()	Gets the size of this data asset's content
InputStream	getContentStream()	Gets raw data corresponding to this Asset
DID	getDID()	Gets the DID for this asset.
Map<String,Object>	getParamValue()	Gets the representation of this asset as required to pass to a remote invokable service.
boolean	isDataAsset()	Returns true if this asset is a data asset, i.e.

Methods inherited from class sg.dex.starfish.impl.AAsset

getAssetID, getMetadata, getMetadataString, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface sg.dex.starfish.Asset

getAssetID, getContent, getMetadata, getMetadataString, isBundle, isOperation

Methods inherited from interface sg.dex.starfish.DataAsset

getContentHash, includeContentHash, updateMeta, validateContentHash

Constructor Detail

RemoteDataAsset

protected RemoteDataAsset(String meta,
                          RemoteAgent remoteAgent)

Method Detail

create

public static RemoteDataAsset create(RemoteAgent agent,
                                     String meta)

Creates a RemoteAsset with the given metadata on the specified remote agent

Parameters:

agent - RemoteAgent on which to create the RemoteAsset

meta - Asset metadata which must be a valid JSON string

Returns:

RemoteAsset

isDataAsset

public boolean isDataAsset()

Description copied from interface: Asset

Returns true if this asset is a data asset, i.e. the asset represents an immutable data object.

Specified by:

isDataAsset in interface Asset

Specified by:

isDataAsset in interface DataAsset

Returns:

true if the asset is a data asset, false otherwise

getContentStream

public InputStream getContentStream()

Gets raw data corresponding to this Asset

Specified by:

getContentStream in interface Asset

Specified by:

getContentStream in interface DataAsset

Returns:

An input stream allowing consumption of the asset data

Throws:

AuthorizationException - if requestor does not have access permission

StorageException - if unable to load the Asset

getContentSize

public long getContentSize()

Description copied from interface: DataAsset

Gets the size of this data asset's content

Specified by:

getContentSize in interface DataAsset

Returns:

The size of the asset in bytes

getParamValue

public Map<String,Object> getParamValue()

Description copied from interface: Asset

Gets the representation of this asset as required to pass to a remote invokable service.

Specified by:

getParamValue in interface Asset

Overrides:

getParamValue in class AAsset

Returns:

A map representing this asset

getDID

public DID getDID()

Description copied from interface: Asset

Gets the DID for this asset. The DID may include a DID path to specify the precise asset if the DID refers to an agent managing the asset. Throws an exception if a DID is not available or cannot be constructed.

Specified by:

getDID in interface Asset

Overrides:

getDID in class AAsset

Returns:

The global DID for this asset.

See Also:

W3C DID spec