Package opennlp.tools.formats.ad

Class ADPOSSampleStream

java.lang.Object

opennlp.tools.formats.ad.ADPOSSampleStream

All Implemented Interfaces:

AutoCloseable, ObjectStream<POSSample>

@Internal
public class ADPOSSampleStream
extends Object
implements ObjectStream<POSSample>

Note: Do not use this class, internal use only!

Constructor Summary

Constructors

Constructor	Description
ADPOSSampleStream(InputStreamFactory in, String charsetName, boolean expandME, boolean includeFeatures)	Creates a new POSSample stream from an InputStreamFactory
ADPOSSampleStream(ObjectStream<String> lineStream, boolean expandME, boolean includeFeatures)	Creates a new ADPOSSampleStream stream from a ObjectStream, that could be a PlainTextByLineStream object.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the ObjectStream and releases all allocated resources.
POSSample	read()	Returns the next ObjectStream object.
void	reset()	Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly.

Methods inherited from class java.lang.Object

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

Constructor Detail

ADPOSSampleStream

public ADPOSSampleStream(ObjectStream<String> lineStream,
                         boolean expandME,
                         boolean includeFeatures)

Creates a new ADPOSSampleStream stream from a ObjectStream, that could be a PlainTextByLineStream object.

Parameters:

lineStream - A ObjectStream stream as input.

expandME - If true will expand the multiword expressions, each word of the expression will have the POS Tag that was attributed to the expression plus the prefix B- or I- (CONLL convention).

includeFeatures - If true will combine the POS Tag with the feature tags.

ADPOSSampleStream

public ADPOSSampleStream(InputStreamFactory in,
                         String charsetName,
                         boolean expandME,
                         boolean includeFeatures)
                  throws IOException

Creates a new POSSample stream from an InputStreamFactory

Parameters:

in - The InputStreamFactory for the corpus.

charsetName - The charset to use for reading of the corpus.

expandME - If true will expand the multiword expressions, each word of the expression will have the POS Tag that was attributed to the expression plus the prefix B- or I- (CONLL convention).

includeFeatures - If true will combine the POS Tag with the feature tags.

Throws:

IOException

Method Detail

read

public POSSample read()
               throws IOException

Description copied from interface: ObjectStream

Returns the next ObjectStream 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<POSSample>

Returns:

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

Throws:

IOException - Thrown 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<POSSample>

Throws:

IOException - Thrown if there is an error during resetting the stream.

UnsupportedOperationException - Thrown if the reset() is not supported. By default, this is the case.

close

public void close()
           throws IOException

Description copied from interface: ObjectStream

Closes the ObjectStream and releases all allocated resources. After close was called, it's not allowed to call ObjectStream.read() or ObjectStream.reset().

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ObjectStream<POSSample>

Throws:

IOException - Thrown if there is an error during closing the stream.