Package de.gwdg.metadataqa.marc.analysis.validator

Class Marc21LinkageHandler

java.lang.Object

de.gwdg.metadataqa.marc.analysis.validator.Marc21LinkageHandler

public class Marc21LinkageHandler
extends Object

A handler for linkage validation. Currently, handles only the MARC21 field 880, subfield 6. It is not clear whether similar fields exist in UNIMARC and PICA.

Constructor Summary

Constructors

Constructor	Description
Marc21LinkageHandler(ValidatorConfiguration configuration, ErrorsCollector errorsCollector)

Method Summary

Modifier and Type	Method	Description
List<ValidationError>	getErrors()
DataField	handleLinkage(DataField field, DataFieldDefinition definition)	Validates the linkage of the field 880.
boolean	isAmbiguousLinkage()

Methods inherited from class java.lang.Object

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

Constructor Details

Marc21LinkageHandler

public Marc21LinkageHandler(ValidatorConfiguration configuration,
 ErrorsCollector errorsCollector)

Method Details

handleLinkage

public DataField handleLinkage(DataField field,
 DataFieldDefinition definition)

Validates the linkage of the field 880. Returns the associated field information if the linkage is valid. Otherwise, returns null. In addition: - adds errors to the errorsCollector - sets the ambiguousLinkage flag to true if the linkage is ambiguous

Note: Linkage means that the field 880 is linked to another field specified in the subfield $6. In that case, the subfields of the field 880 are the same as the subfields of the linked (i.e. associated) field.

Parameters:

field - The field for which the linkage is to be validated and handled

definition - The definition of the field

Returns:

The associated field if the linkage is valid, otherwise null

getErrors

public List<ValidationError> getErrors()

isAmbiguousLinkage

public boolean isAmbiguousLinkage()