Package de.pangaea.metadataportal.harvester

Class DirectoryHarvester

java.lang.Object

de.pangaea.metadataportal.harvester.Harvester

de.pangaea.metadataportal.harvester.SingleFileEntitiesHarvester

de.pangaea.metadataportal.harvester.DirectoryHarvester

public class DirectoryHarvester
extends SingleFileEntitiesHarvester

Harvester for traversing file system directories. Identifiers are build from the relative path of files against the base directory.

This harvester supports the following additional harvester properties:

• directory: file system directory to harvest
• recursive: traverse in subdirs (default: false)
• identifierPrefix: This prefix is appended before all relative file system pathes (that are the identifiers of the documents) (default: "")
• filenameFilter: regex to match the filename (default: none)

Author:

Uwe Schindler

Field Summary

Fields inherited from class de.pangaea.metadataportal.harvester.Harvester

fromDateReference, harvestCount, HARVESTER_METADATA_FIELD_LAST_HARVESTED, harvestMessageStep, iconfig, log, processor

Constructor Summary

Constructors

Constructor	Description
DirectoryHarvester(HarvesterConfig iconfig)

Method Summary

Modifier and Type	Method	Description
protected void	enumerateValidHarvesterPropertyNames(Set<String> props)	This method is used by subclasses to enumerate all available harvester properties that are implemented by them.
void	harvest()	This method is called by the harvester after Harvester.open(de.pangaea.metadataportal.processor.ElasticsearchConnection, java.lang.String)'ing it.
void	open(ElasticsearchConnection es, String targetIndex)	Opens harvester for harvesting documents described by the given HarvesterConfig.

Methods inherited from class de.pangaea.metadataportal.harvester.SingleFileEntitiesHarvester

addDocument, addDocument, cancelMissingDocumentDelete, close

Methods inherited from class de.pangaea.metadataportal.harvester.Harvester

addDocument, createMetadataDocumentInstance, deleteDocument, finishReindex, getValidHarvesterPropertyNames, isAllIndexes, isClosed, isDocumentOutdated, main, prepareReindex, runHarvester, runHarvester, setHarvestingDateReference, setValidIdentifiers

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectoryHarvester

public DirectoryHarvester(HarvesterConfig iconfig)

Method Detail

open

public void open(ElasticsearchConnection es,
                 String targetIndex)
          throws Exception

Description copied from class: Harvester

Opens harvester for harvesting documents described by the given HarvesterConfig. Opens Harvester.processor for usage in Harvester.harvest() method.

Overrides:

open in class Harvester

Throws:

Exception - if an exception occurs during opening (various types of exceptions can be thrown).

harvest

public void harvest()
             throws Exception

Description copied from class: Harvester

This method is called by the harvester after Harvester.open(de.pangaea.metadataportal.processor.ElasticsearchConnection, java.lang.String)'ing it. Overwrite this method in your harvester class. This method should harvest files from somewhere, generate MetadataDocuments and add them with Harvester.addDocument(de.pangaea.metadataportal.processor.MetadataDocument).

Specified by:

harvest in class Harvester

Throws:

Exception - of any type.

enumerateValidHarvesterPropertyNames

protected void enumerateValidHarvesterPropertyNames(Set<String> props)

Description copied from class: Harvester

This method is used by subclasses to enumerate all available harvester properties that are implemented by them. Overwrite this method in your own implementation and append all harvester names to the supplied Set. The public API for client code requesting property names is Harvester.getValidHarvesterPropertyNames().

Overrides:

enumerateValidHarvesterPropertyNames in class SingleFileEntitiesHarvester

See Also:

Harvester.getValidHarvesterPropertyNames()