Package org.mycore.oai

Class MCROAIDeletedSearcher

java.lang.Object

org.mycore.oai.MCROAISearcher

org.mycore.oai.MCROAIDeletedSearcher

public class MCROAIDeletedSearcher
extends MCROAISearcher

Searcher for deleted records. The schema for the cursor is deleted_from_rows.

Author:

Matthias Eichner

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CURSOR_DELIMETER
static final String	CURSOR_PREFIX

Fields inherited from class org.mycore.oai.MCROAISearcher

expire, id, identify, LOGGER, metadataFormat, partitionSize, runningExpirationTimer, setManager

Constructor Summary

Constructors

Constructor	Description
MCROAIDeletedSearcher()

Method Summary

Modifier and Type	Method	Description
String	buildCursor(int from, int rows)	Builds the cursor in the form of deleted_from_rows.
List<org.mycore.oai.pmh.Header>	getDeletedRecords()
Optional<Instant>	getEarliestTimestamp()	Returns the earliest created/modified record time stamp.
Optional<org.mycore.oai.pmh.Header>	getHeader(String mcrId)
MCROAISimpleResult	query(String cursor)
MCROAIResult	query(MCRSet set, Instant from, Instant until)
protected List<org.mycore.oai.pmh.Header>	searchDeleted(Instant from, Instant until)	Returns a list with identifiers of the deleted objects within the given date boundary.

Methods inherited from class org.mycore.oai.MCROAISearcher

getConfigPrefix, getExpirationTime, getID, getMetadataFormat, getObjectManager, getPartitionSize, getSetManager, init, isExpired, updateRunningExpirationTimer

Methods inherited from class java.lang.Object

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

Field Details

CURSOR_PREFIX

public static final String CURSOR_PREFIX

See Also:

• Constant Field Values

CURSOR_DELIMETER

public static final String CURSOR_DELIMETER

See Also:

• Constant Field Values

Constructor Details

MCROAIDeletedSearcher

public MCROAIDeletedSearcher()

Method Details

getHeader

public Optional<org.mycore.oai.pmh.Header> getHeader(String mcrId)

Specified by:

getHeader in class MCROAISearcher

query

public MCROAISimpleResult query(String cursor)

Specified by:

query in class MCROAISearcher

query

public MCROAIResult query(MCRSet set,
 Instant from,
 Instant until)

Specified by:

query in class MCROAISearcher

getEarliestTimestamp

public Optional<Instant> getEarliestTimestamp()

Description copied from class: MCROAISearcher

Returns the earliest created/modified record time stamp. If the earliest time stamp cannot be retrieved an empty optional is returned.

Specified by:

getEarliestTimestamp in class MCROAISearcher

Returns:

the earliest created/modified time stamp

getDeletedRecords

public List<org.mycore.oai.pmh.Header> getDeletedRecords()

buildCursor

public String buildCursor(int from,
 int rows)

Builds the cursor in the form of deleted_from_rows.

Parameters:

from - where to start

rows - how many rows

Returns:

the cursor as string

searchDeleted

protected List<org.mycore.oai.pmh.Header> searchDeleted(Instant from,
 Instant until)

Returns a list with identifiers of the deleted objects within the given date boundary. If the record policy indicates that there is no support for tracking deleted an empty list is returned.

Parameters:

from - from date

until - to date

Returns:

a list with identifiers of the deleted objects