org.apache.streams.regex

Class AbstractRegexExtensionExtractor<T>

java.lang.Object

org.apache.streams.regex.AbstractRegexExtensionExtractor<T>

All Implemented Interfaces:

Serializable, StreamsOperation, StreamsProcessor

Direct Known Subclasses:

RegexHashtagExtractor, RegexMentionsExtractor, RegexUrlExtractor

public abstract class AbstractRegexExtensionExtractor<T>
extends Object
implements StreamsProcessor

Provides a base implementation for extracting entities from text using regular expressions and then modifying the appropriate Activity extensions object.

See Also:

Serialized Form

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractRegexExtensionExtractor(String patternConfigKey, String extensionKey, String defaultPattern)

Method Summary

Modifier and Type	Method and Description
void	cleanUp()
protected Collection<T>	ensureTargetObject(Activity activity)
String	getPattern()
void	prepare(Object configurationObject)
protected abstract T	prepareObject(String extracted) Configures the value to be persisted to the extensions object.
List<StreamsDatum>	process(StreamsDatum entry)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.streams.core.StreamsOperation

getId

Constructor Detail

AbstractRegexExtensionExtractor

protected AbstractRegexExtensionExtractor(String patternConfigKey,
                                          String extensionKey,
                                          String defaultPattern)

Method Detail

getPattern

public String getPattern()

process

public List<StreamsDatum> process(StreamsDatum entry)

Specified by:

process in interface StreamsProcessor

prepare

public void prepare(Object configurationObject)

Specified by:

prepare in interface StreamsOperation

cleanUp

public void cleanUp()

Specified by:

cleanUp in interface StreamsOperation

prepareObject

protected abstract T prepareObject(String extracted)

Configures the value to be persisted to the extensions object.

Parameters:

extracted - the value extracted by the regex

Returns:

an object representing the appropriate extension

ensureTargetObject

protected Collection<T> ensureTargetObject(Activity activity)