org.apache.uima.cas
Interface SofaFS

All Superinterfaces:

FeatureStructure

All Known Implementing Classes:

Sofa

public interface SofaFS
extends FeatureStructure

Interface for "Subject of Analysis" (Sofa) feature structures. A Sofa is implemented as a built-in CAS type uima.cas.Sofa. The features of the Sofa type include:

• SofaID: Every Sofa in a CAS must have a unique SofaID. SoaIDs are the primary handle or access.
• Mime type: This string feature can be used to describe the type of the data represented by the Sofa.
• Sofa Data: The data itself. This data can be resident in the CAS or it can be a reference to data outside the CAS.

SofaFS (the feature structure that represents a sofa) are created as a side effect of creating a new CAS view. To create a new CAS view, use CAS.createView(string-view-name). From the returned CAS view, you can get the associated SofaFS instance, using CAS.getSofa(). The SofaFS interface provides methods to set the values of the features of the Sofa FS. Generic CAS APIs should never be used to create Sofas or set their features.

Sofa data can be contained locally in the CAS itself or it can be remote from CAS. To set the local Sofa data in the Sofa FS use: SofaFS.setLocalSofaData(). If the data is remote from the CAS use: SofaFS.setRemoteSofaURI().

Once set, the Sofa data cannot be set again until the CAS has been reset. This is so that annotators cannot change the subject of analysis during processing.

Method Summary

FeatureStructure	getLocalFSData() Get the Local Subject of Analysis returns null if not previously set.
String	getLocalStringData() Get the Local Subject of Analysis returns null if not previously set.
InputStream	getSofaDataStream() Provides stream access to both local and remote Sofa data.
String	getSofaID() Get the Sofa globally unique name, after mapping.
String	getSofaMime() Get the Sofa mime type.
int	getSofaRef() Get the Sofa Ref value.
String	getSofaURI() Get the Sofa URI value.
void	setLocalSofaData(FeatureStructure aFS) Set the Local Subject of Analysis to be a predefined ArrayFS.
void	setLocalSofaData(String aString) Set the Local Subject of Analysis to be a String.
void	setRemoteSofaURI(String aURI) Set the URI for a Remote Subject of Analysis.

Methods inherited from interface org.apache.uima.cas.FeatureStructure

clone, equals, getBooleanValue, getByteValue, getCAS, getDoubleValue, getFeatureValue, getFeatureValueAsString, getFloatValue, getIntValue, getLongValue, getShortValue, getStringValue, getType, hashCode, setBooleanValue, setByteValue, setDoubleValue, setFeatureValue, setFeatureValueFromString, setFloatValue, setIntValue, setLongValue, setShortValue, setStringValue

Method Detail

setRemoteSofaURI

void setRemoteSofaURI(String aURI)
                      throws CASRuntimeException

Set the URI for a Remote Subject of Analysis. Once set, this URI may not be changed.

Throws:

CASRuntimeException - if the Sofa data has already been set

setLocalSofaData

void setLocalSofaData(FeatureStructure aFS)
                      throws CASRuntimeException

Set the Local Subject of Analysis to be a predefined ArrayFS. Once set, the Sofa data cannot be changed.

Throws:

CASRuntimeException - if given FS is not an ArrayFS, or if the Sofa data has already been set

setLocalSofaData

void setLocalSofaData(String aString)
                      throws CASRuntimeException

Set the Local Subject of Analysis to be a String. Once set, the Sofa data cannot be changed.

Throws:

CASRuntimeException - if the Sofa data has already been set

getLocalFSData

FeatureStructure getLocalFSData()

Get the Local Subject of Analysis returns null if not previously set.

getLocalStringData

String getLocalStringData()

Get the Local Subject of Analysis returns null if not previously set.

getSofaMime

String getSofaMime()

Get the Sofa mime type.

Returns:

SofA mime type

getSofaID

String getSofaID()

Get the Sofa globally unique name, after mapping.

Returns:

Sofa globally unique name, after mapping

getSofaURI

String getSofaURI()

Get the Sofa URI value.

Returns:

Sofa URI or null if not valid

getSofaRef

int getSofaRef()

Get the Sofa Ref value.

getSofaDataStream

InputStream getSofaDataStream()

Provides stream access to both local and remote Sofa data. For remote sofa data, a custom URLStreamHandler may be registered for a protocol via the java.protocol.handler.pkgs system property.

Returns:

an InputStream for reading Sofa data. null returned if there is no Sofa data.