edu.ucla.sspace.dependency

Class DependencyExtractorManager

java.lang.Object

edu.ucla.sspace.dependency.DependencyExtractorManager

public class DependencyExtractorManager
extends Object

A coordinating utility class for managing all the DependencyExtractor instances responsible for reading all of the different dependency parsing output formats. This class provides access to a default DependencyExtractor, which is the set either explicitly, or is set when the first DependencyExtractor is added. This class also provides access to DependencyExtractor instances by name in the event than a user should need to process a format generated by a specific parser.

Method Summary

Methods

Modifier and Type	Method and Description
static void	addExtractor(String name, DependencyExtractor extractor) Adds the provided DependencyExtractor to the set of available extractors.
static void	addExtractor(String name, DependencyExtractor extractor, boolean isDefault) Adds the provided DependencyExtractor to the set of available extractors, optionally setting the extractor as the default.
static DependencyExtractor	getDefaultExtractor() Returns the default extractor used by this manager.
static DependencyExtractor	getExtractor(String name) Returns the extractor with the specified name.

Methods inherited from class java.lang.Object

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

Method Detail

addExtractor

public static void addExtractor(String name,
                DependencyExtractor extractor)

Adds the provided DependencyExtractor to the set of available extractors. If an existing extractor has the same name, the existing extactor is overwritten. If no extractors have been added, the provided extractor becomes the default extractor.

Parameters:

name - the name of the parser that generated the parse trees.

extractor - the an extractor instance

Throws:

NullPointerException - if either name or extractor are null.

addExtractor

public static void addExtractor(String name,
                DependencyExtractor extractor,
                boolean isDefault)

Adds the provided DependencyExtractor to the set of available extractors, optionally setting the extractor as the default. If an existing extractor has the same name, the existing extactor is overwritten.

Parameters:

name - the name of the parser that generated the parse trees.

extractor - the extractor instance

isDefault - true if this extractor should be the default returned by this class

Throws:

NullPointerException - if either name or extractor are null.

getExtractor

public static DependencyExtractor getExtractor(String name)

Returns the extractor with the specified name. The name typically refers to the parser that generated the output files that the extractor can read.

Parameters:

name - the name associated with an extractor.

Throws:

IllegalArgumentException - if no extractor is known for the name

getDefaultExtractor

public static DependencyExtractor getDefaultExtractor()

Returns the default extractor used by this manager.

Throws:

IllegalStateException - if no default extractor has been set