com.norconex.crawler.fs.doc.operations.checksum.FsMetadataChecksummer

All Implemented Interfaces:: Configurable<BaseChecksummerConfig>, MetadataChecksummer

Default implementation of MetadataChecksummer which by default returns the combined values of FsDocMetadata.LAST_MODIFIED and FsDocMetadata.FILE_SIZE, separated with an underscore (e.g. "14125443181234_123").

You have the option to keep the checksum as a document metadata field. When BaseChecksummerConfig.setKeep(boolean) is true, the checksum will be stored in the target field name specified. If you do not specify any, it stores it under the metadata field name CrawlerDocMetaConstants.CHECKSUM_METADATA.

To use different fields (one or several) to constitute a checksum, you can use the GenericMetadataChecksummer.

Author:

Pascal Essiembre

See Also:

Field Summary

Fields inherited from interface com.norconex.commons.lang.config.Configurable
PROPERTY
Constructor Summary

Constructors

Constructor

Description

FsMetadataChecksummer()
Method Summary

Modifier and Type

Method

Description

protected boolean

canEqual(Object other)

protected String

doCreateMetaChecksum(Properties metadata)

boolean

equals(Object o)

BaseChecksummerConfig

getConfiguration()

int

hashCode()

String

toString()

Methods inherited from class com.norconex.crawler.core.doc.operations.checksum.AbstractMetadataChecksummer
createMetadataChecksum

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Class FsMetadataChecksummer

Field Summary