nl.inl.blacklab.index

Class MetadataFetcher

java.lang.Object

nl.inl.blacklab.index.MetadataFetcher

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

MetadataFetcherCgnImdi, MetadataFetcherCsv, MetadataFetcherKbDpo, MetadataFetcherSonarCmdi

public abstract class MetadataFetcher
extends Object
implements Closeable

A metadata fetcher can fetch the metadata for a document from some external source (a file, the network, etc.) and add it to the Lucene document.

Field Summary

Fields

Modifier and Type	Field and Description
DocIndexer	docIndexer

Constructor Summary

Constructors

Constructor and Description
MetadataFetcher(DocIndexer docIndexer)

Method Summary

Modifier and Type	Method and Description
abstract void	addMetadata() Fetch the metadata for the document currently being indexed and add it to the document as indexed fields.
void	close() Close the fetcher, releasing any resources it holds

Methods inherited from class java.lang.Object

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

Field Detail

docIndexer

public DocIndexer docIndexer

Constructor Detail

MetadataFetcher

public MetadataFetcher(DocIndexer docIndexer)

Method Detail

addMetadata

public abstract void addMetadata()

Fetch the metadata for the document currently being indexed and add it to the document as indexed fields.

close

public void close()
           throws IOException

Close the fetcher, releasing any resources it holds

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException - if closing caused an error