Package org.apache.jackrabbit.core.data

Class AbstractDataStore

java.lang.Object

org.apache.jackrabbit.core.data.AbstractDataStore

All Implemented Interfaces:

DataStore

Direct Known Subclasses:

AbstractSharedCachingDataStore, CachingDataStore, DbDataStore, FileDataStore

public abstract class AbstractDataStore
extends Object
implements DataStore

Constructor Summary

Constructors

Constructor	Description
AbstractDataStore()

Method Summary

Modifier and Type	Method	Description
DataRecord	getRecord(DataIdentifier identifier)	Returns the identified data record.
DataRecord	getRecordFromReference(String reference)	Returns the record that matches the given binary reference.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jackrabbit.core.data.DataStore

addRecord, clearInUse, close, deleteAllOlderThan, getAllIdentifiers, getMinRecordLength, getRecordIfStored, init, updateModifiedDateOnAccess

Constructor Details

AbstractDataStore

public AbstractDataStore()

Method Details

getRecord

public DataRecord getRecord(DataIdentifier identifier)
                     throws DataStoreException

Description copied from interface: DataStore

Returns the identified data record. The given identifier should be the identifier of a previously saved data record. Since records are never removed, there should never be cases where the identified record is not found. Abnormal cases like that are treated as errors and handled by throwing an exception.

Specified by:

getRecord in interface DataStore

Parameters:

identifier - data identifier

Returns:

identified data record

Throws:

DataStoreException - if the data store could not be accessed, or if the given identifier is invalid

getRecordFromReference

public DataRecord getRecordFromReference(String reference)
                                  throws DataStoreException

Description copied from interface: DataStore

Returns the record that matches the given binary reference. Returns null if the reference is invalid, for example if it points to a record that does not exist.

Specified by:

getRecordFromReference in interface DataStore

Parameters:

reference - binary reference

Returns:

matching record, or null

Throws:

DataStoreException - if the data store could not be accessed