opennlp.tools.postag

Class POSSampleSequenceStream

java.lang.Object

opennlp.tools.postag.POSSampleSequenceStream

All Implemented Interfaces:

AutoCloseable, SequenceStream, ObjectStream<Sequence>

public class POSSampleSequenceStream
extends Object
implements SequenceStream

Constructor Summary

Constructors

Constructor and Description
POSSampleSequenceStream(ObjectStream<POSSample> psi)
POSSampleSequenceStream(ObjectStream<POSSample> psi, POSContextGenerator pcg)

Method Summary

Modifier and Type	Method and Description
void	close() Closes the ObjectStream and releases all allocated resources.
Sequence	read() Returns the next object.
void	reset() Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly.
Event[]	updateContext(Sequence sequence, AbstractModel model) Creates a new event array based on the outcomes predicted by the specified parameters for the specified sequence.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

POSSampleSequenceStream

public POSSampleSequenceStream(ObjectStream<POSSample> psi)
                        throws IOException

Throws:

IOException

POSSampleSequenceStream

public POSSampleSequenceStream(ObjectStream<POSSample> psi,
                               POSContextGenerator pcg)
                        throws IOException

Throws:

IOException

Method Detail

updateContext

public Event[] updateContext(Sequence sequence,
                             AbstractModel model)

Description copied from interface: SequenceStream

Creates a new event array based on the outcomes predicted by the specified parameters for the specified sequence.

Specified by:

updateContext in interface SequenceStream

Parameters:

sequence - The sequence to be evaluated.

Returns:

event array

read

public Sequence read()
              throws IOException

Description copied from interface: ObjectStream

Returns the next object. Calling this method repeatedly until it returns null will return each object from the underlying source exactly once.

Specified by:

read in interface ObjectStream<Sequence>

Returns:

the next object or null to signal that the stream is exhausted

Throws:

IOException - if there is an error during reading

reset

public void reset()
           throws IOException,
                  UnsupportedOperationException

Description copied from interface: ObjectStream

Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly. This method can be used to re-read the stream if multiple passes over the objects are required. The implementation of this method is optional.

Specified by:

reset in interface ObjectStream<Sequence>

Throws:

IOException - if there is an error during reseting the stream

UnsupportedOperationException

close

public void close()
           throws IOException

Description copied from interface: ObjectStream

Closes the ObjectStream and releases all allocated resources. After close was called its not allowed to call read or reset.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ObjectStream<Sequence>

Throws:

IOException - if there is an error during closing the stream