net.sf.okapi.lib.preprocessing.filters.common

Class PreprocessingFilter

java.lang.Object

net.sf.okapi.lib.preprocessing.filters.common.PreprocessingFilter

All Implemented Interfaces:

AutoCloseable, Iterator<Event>, IFilter

Direct Known Subclasses:

SimplificationFilter

public class PreprocessingFilter
extends Object
implements IFilter

This filter is a wrapper around another filter, used when events generated by the internal filter should be modified (transformed, pre-processed) for the pipeline steps consuming the filter events. The constructor takes an instance of the internal filter and an array of the needed transformation steps.

Field Summary

Fields inherited from interface net.sf.okapi.common.filters.IFilter

SUB_FILTER

Constructor Summary

Constructors

Constructor and Description
PreprocessingFilter(IFilter filter, IPipelineStep... steps)

Method Summary

Modifier and Type	Method and Description
void	cancel() Cancels the current process.
void	close() Closes the input document.
IFilterWriter	createFilterWriter() Creates a new IFilterWriter object from the most appropriate class to use with this filter.
ISkeletonWriter	createSkeletonWriter() Creates a new ISkeletonWriter object that corresponds to the type of skeleton this filter uses.
List<FilterConfiguration>	getConfigurations() Gets the list of all predefined configurations for this filter.
String	getDisplayName() Gets the localizable display name of this filter.
EncoderManager	getEncoderManager() Gets the EncoderManager object for this filter.
protected IFilter	getFilter()
String	getMimeType() Gets the MIME type of the format supported by this filter.
String	getName() Gets the name/identifier of this filter.
IParameters	getParameters() Gets the current parameters for this filter.
protected List<IPipelineStep>	getSteps()
boolean	hasNext() Indicates if there is an event to process.
Event	next() Gets the next event available.
void	open(RawDocument input) Opens the input document described in a give RawDocument object.
void	open(RawDocument input, boolean generateSkeleton) Opens the input document described in a give RawDocument object, and optionally creates skeleton information.
protected void	setFilter(IFilter filter)
void	setFilterConfigurationMapper(IFilterConfigurationMapper fcMapper) Sets the filter configuration mapper for this filter.
void	setParameters(IParameters params) Sets new parameters for this filter.

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.okapi.common.filters.IFilter

stream

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

PreprocessingFilter

public PreprocessingFilter(IFilter filter,
                           IPipelineStep... steps)

Method Detail

getName

public String getName()

Description copied from interface: IFilter

Gets the name/identifier of this filter.

Specified by:

getName in interface IFilter

Returns:

The name/identifier of the filter.

getDisplayName

public String getDisplayName()

Description copied from interface: IFilter

Gets the localizable display name of this filter.

Specified by:

getDisplayName in interface IFilter

Returns:

the localizable display name of this filter.

open

public void open(RawDocument input)

Description copied from interface: IFilter

Opens the input document described in a give RawDocument object. Skeleton information is always created when you use this method.

Specified by:

open in interface IFilter

Parameters:

input - The RawDocument object to use to open the document.

open

public void open(RawDocument input,
                 boolean generateSkeleton)

Description copied from interface: IFilter

Opens the input document described in a give RawDocument object, and optionally creates skeleton information.

Specified by:

open in interface IFilter

Parameters:

input - The RawDocument object to use to open the document.

generateSkeleton - true to generate the skeleton data, false otherwise.

close

public void close()

Description copied from interface: IFilter

Closes the input document. Developers should call this method from within their code before sending the last event: This can allow writer objects to overwrite the input file when they receive the last event. This method must also be safe to call even if the input document is not opened.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface IFilter

hasNext

public boolean hasNext()

Description copied from interface: IFilter

Indicates if there is an event to process.

Implementer Note: The caller must be able to call this method several times without changing state.

Specified by:

hasNext in interface Iterator<Event>

Specified by:

hasNext in interface IFilter

Returns:

True if there is at least one event to process, false if not.

next

public Event next()

Description copied from interface: IFilter

Gets the next event available. Calling this method can be done only once on each event.

Specified by:

next in interface Iterator<Event>

Specified by:

next in interface IFilter

Returns:

The next event available or null if there are no events.

cancel

public void cancel()

Description copied from interface: IFilter

Cancels the current process.

Specified by:

cancel in interface IFilter

getParameters

public IParameters getParameters()

Description copied from interface: IFilter

Gets the current parameters for this filter.

Specified by:

getParameters in interface IFilter

Returns:

The current parameters for this filter, or null if this filter has no parameters.

setParameters

public void setParameters(IParameters params)

Description copied from interface: IFilter

Sets new parameters for this filter.

Specified by:

setParameters in interface IFilter

Parameters:

params - The new parameters to use.

setFilterConfigurationMapper

public void setFilterConfigurationMapper(IFilterConfigurationMapper fcMapper)

Description copied from interface: IFilter

Sets the filter configuration mapper for this filter. This object is used by this filter if it needs to instantiate sub-filters. The implementations of IFilter that do not use sub-filters can use an empty stub for this method.

Specified by:

setFilterConfigurationMapper in interface IFilter

Parameters:

fcMapper - the mapper to set.

createSkeletonWriter

public ISkeletonWriter createSkeletonWriter()

Description copied from interface: IFilter

Creates a new ISkeletonWriter object that corresponds to the type of skeleton this filter uses.

Specified by:

createSkeletonWriter in interface IFilter

Returns:

A new instance of ISkeletonWriter for the type of skeleton this filter uses.

createFilterWriter

public IFilterWriter createFilterWriter()

Description copied from interface: IFilter

Creates a new IFilterWriter object from the most appropriate class to use with this filter.

Specified by:

createFilterWriter in interface IFilter

Returns:

A new instance of IFilterWriter for the preferred implementation for this filter.

getEncoderManager

public EncoderManager getEncoderManager()

Description copied from interface: IFilter

Gets the EncoderManager object for this filter. This encoder manager should provided the mappings to the different MIME types used by the filter.

Specified by:

getEncoderManager in interface IFilter

Returns:

the EncoderManager for this filter.

getMimeType

public String getMimeType()

Description copied from interface: IFilter

Gets the MIME type of the format supported by this filter.

Specified by:

getMimeType in interface IFilter

Returns:

The MIME type of the format supported by this filter.

getConfigurations

public List<FilterConfiguration> getConfigurations()

Description copied from interface: IFilter

Gets the list of all predefined configurations for this filter.

Specified by:

getConfigurations in interface IFilter

Returns:

a list of the all predefined configurations for this filter.

getFilter

protected IFilter getFilter()

setFilter

protected void setFilter(IFilter filter)

getSteps

protected List<IPipelineStep> getSteps()