org.eclipse.smila.importing.crawler.file
Class FileExtractorWorker

java.lang.Object
  org.eclipse.smila.importing.compounds.ExtractorWorkerBase
      org.eclipse.smila.importing.crawler.file.FileExtractorWorker

All Implemented Interfaces:

Worker

public class FileExtractorWorker
extends ExtractorWorkerBase

Compound extractor worker to use in file crawling workflows.

Field Summary

static java.lang.String

NAME name of worker.

Constructor Summary

FileExtractorWorker()

Method Summary

protected Record	convertRecord(Record compoundRecord, Record extractedRecord, TaskContext taskContext) create a record from the extracted record that conforms to the records produced by the matching crawler.
protected boolean	filterRecord(Record record, TaskContext taskContext) Filter extracted records.
protected ContentFetcher	getContentFetcher() get a content fetcher for the data source type.
java.lang.String	getName()
protected java.util.Iterator<Record>	invokeExtractor(CompoundExtractor extractor, Record compoundRecord, java.io.InputStream compoundContent, TaskContext taskContext) invoke extractor with data from the crawled record.
void	setFileCrawlerService(FileCrawlerService fileCrawler) DS service reference bind method.
void	unsetFileCrawlerService(FileCrawlerService fileCrawler) DS service reference unbind method.

Methods inherited from class org.eclipse.smila.importing.compounds.ExtractorWorkerBase

concatAttributeValues, copyAttachment, copyAttribute, copyCompoundAttributes, copySetToStringAttribute, mapRecord, perform, setCompoundExtractor, unsetCompoundExtractor

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

name of worker.

See Also:

Constant Field Values

Constructor Detail

FileExtractorWorker

public FileExtractorWorker()

Method Detail

getName

public java.lang.String getName()

Returns:

the name of the worker. The worker function will be executed for tasks tied to this worker name.

invokeExtractor

protected java.util.Iterator<Record> invokeExtractor(CompoundExtractor extractor,
                                                     Record compoundRecord,
                                                     java.io.InputStream compoundContent,
                                                     TaskContext taskContext)
                                              throws CompoundExtractorException

Description copied from class: ExtractorWorkerBase

invoke extractor with data from the crawled record.

Specified by:

invokeExtractor in class ExtractorWorkerBase

Throws:

CompoundExtractorException

convertRecord

protected Record convertRecord(Record compoundRecord,
                               Record extractedRecord,
                               TaskContext taskContext)

Description copied from class: ExtractorWorkerBase

create a record from the extracted record that conforms to the records produced by the matching crawler.

Specified by:

convertRecord in class ExtractorWorkerBase

filterRecord

protected boolean filterRecord(Record record,
                               TaskContext taskContext)

Filter extracted records. Filters applied to extracted records:

• filePatterns (to the name of the extracted file),
• folderPatterns (combined compound pathes and the path within the compound),
• the file size of the compressed file.

Overrides:

filterRecord in class ExtractorWorkerBase

Parameters:

record - the record to check

taskContext - the task context containing the task parameters

Returns:

true if the record passes the filter(s), false if not.

getContentFetcher

protected ContentFetcher getContentFetcher()

Description copied from class: ExtractorWorkerBase

get a content fetcher for the data source type.

Specified by:

getContentFetcher in class ExtractorWorkerBase

setFileCrawlerService

public void setFileCrawlerService(FileCrawlerService fileCrawler)

DS service reference bind method.

unsetFileCrawlerService

public void unsetFileCrawlerService(FileCrawlerService fileCrawler)

DS service reference unbind method.