org.autoplot.datasource.AbstractDataSource

Base class for file-based DataSources that keeps track of the uri, makes the parameters available, manages capabilities and has do-nothing implementations for rarely-used methods of DataSource. Also this provides the filePollUpdating parameter and Updating capability.

AbstractDataSource( java.net.URI uri )

addCability

Deprecated: use addCapability

addCapability

addCapability( java.lang.Class clazz, Object o ) → void

attach a capability

Parameters

clazz - the capability class.
o - an implementation.

Returns:

void (returns nothing)

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asynchronousLoad

asynchronousLoad( ) → boolean

Returns:

boolean

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getCapability

getCapability( java.lang.Class clazz ) → Object

attempt to get a capability. null will be returned if the capability doesn't exist.

Parameters

clazz - the capability class.

Returns:

null or an implementation of a capability.

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getDataSet

getDataSet( ProgressMonitor mon ) → QDataSet

Parameters

mon - a ProgressMonitor

Returns:

org.das2.qds.QDataSet

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getMetadata

getMetadata( ProgressMonitor mon ) → java.util.Map

abstract class version returns an empty tree. Override this method to provide metadata.

Parameters

mon - progress monitor

Returns:

a java.util.Map

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getMetadataModel

getMetadataModel( ) → org.autoplot.datasource.MetadataModel

return a MetadataModel object that can make the metadata canonical. For example, ISTPMetadataModel interprets the metadata returned from CDF files, but this same model can be used with HDF files. This returns a null model that does no interpretation, and some data sources will override this.

Returns:

an org.autoplot.datasource.MetadataModel

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getProperties

getProperties( ) → java.util.Map

return metadata in canonical form using the metadata model. If there are no properties or a null model, then an empty map is returned. Note, getMetadataModel should return non-null, and getMetadata should return non-null, but this guards against the mistake.

Returns:

a java.util.Map

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getURI

getURI( ) → String

Returns:

java.lang.String

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toString

toString( ) → String

Returns:

java.lang.String

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