org.apache.ctakes.necontexts

Class NamedEntityContextAnalyzer

java.lang.Object

org.apache.ctakes.necontexts.NamedEntityContextAnalyzer

All Implemented Interfaces:

ContextAnalyzer

Direct Known Subclasses:

NegationContextAnalyzer, StatusContextAnalyzer

public abstract class NamedEntityContextAnalyzer
extends Object
implements ContextAnalyzer

This context analyzer provides code that is shared by the StatusContextAnalyzer and NegationContextAnalyzer which are both analyzers that examine the contexts surrounding named entity annotations.

Constructor Summary

Constructors

Constructor and Description
NamedEntityContextAnalyzer()

Method Summary

Modifier and Type	Method and Description
void	initialize(org.apache.uima.UimaContext annotatorContext) This will be called by the ContextAnnotator during its initialize method
boolean	isBoundary(org.apache.uima.jcas.tcas.Annotation contextAnnotation, int scopeOrientation) This method is called by the ContextAnnotator.
protected List<TextToken>	wrapAsFsmTokens(List<? extends org.apache.uima.jcas.tcas.Annotation> tokenList) This method converts Token annotations to TextTokens required by the fsm library used by both subclasses of this class.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ctakes.necontexts.ContextAnalyzer

analyzeContext

Constructor Detail

NamedEntityContextAnalyzer

public NamedEntityContextAnalyzer()

Method Detail

initialize

public void initialize(org.apache.uima.UimaContext annotatorContext)
                throws org.apache.uima.resource.ResourceInitializationException

Description copied from interface: ContextAnalyzer

This will be called by the ContextAnnotator during its initialize method

Specified by:

initialize in interface ContextAnalyzer

Throws:

org.apache.uima.resource.ResourceInitializationException

isBoundary

public boolean isBoundary(org.apache.uima.jcas.tcas.Annotation contextAnnotation,
                          int scopeOrientation)
                   throws org.apache.uima.analysis_engine.AnalysisEngineProcessException

Description copied from interface: ContextAnalyzer

This method is called by the ContextAnnotator.

For the left and right scopes, the context annotator will collect a number of annotations up to the maximum specified by the appropriate parameter unless it comes to the edge of the window annotation or a boundary condition is met as specified by this method. For example, you may specify that the scope is LEFT, the maximum left scope size is 10, the context annotation is a token of some sort, and the window annotation is a sentence. The context annotator will collect the annotations to the left of the focus annotation such that there will be no more than 10 context annotations, they will all be inside the sentence, and no context annotations will be collected to the left of a boundary condition as specified by this method.

Specified by:

isBoundary in interface ContextAnalyzer

Parameters:

contextAnnotation - the context annotation that may or may not satisfy a boundary condition

scopeOrientation - the scope of the context annotator. The value will be the left or right scope.

Returns:

true if the context annotation satisfies a boundary condition.

Throws:

org.apache.uima.analysis_engine.AnalysisEngineProcessException

See Also:

ContextAnnotator.LEFT_SCOPE, ContextAnnotator.RIGHT_SCOPE, isBoundary(Annotation, int)

wrapAsFsmTokens

protected List<TextToken> wrapAsFsmTokens(List<? extends org.apache.uima.jcas.tcas.Annotation> tokenList)

This method converts Token annotations to TextTokens required by the fsm library used by both subclasses of this class.

Parameters:

tokenList - a list of token annotations

Returns:

a conversion of the token annotations as a list of TextTokens