org.eclipse.smila.recordstorage.impl
Class RecordStorageImpl

java.lang.Object
  org.eclipse.smila.recordstorage.impl.RecordStorageImpl

All Implemented Interfaces:

RecordStorage

public class RecordStorageImpl
extends java.lang.Object
implements RecordStorage

Implementation of a RecordStorage using eclipseLink and JPA. providing limited search access.

Field Summary

static java.lang.String	BUNDLE_NAME name of bundle.
static java.lang.String	CONFIGURATION_FILE name of configuration file.
static java.lang.String	PERSISTENCE_UNIT_NAME Constant for the eclipseLink persistence unit name.

Constructor Summary

RecordStorageImpl()
Default Constructor.

Method Summary

protected void	activate(ComponentContext context) DS activate method.
protected void	deactivate(ComponentContext context) DS deactivate method.
boolean	existsRecord(java.lang.String id) Checks if a Record exists in the storage.
Record	loadRecord(java.lang.String id) Load the record from storage.
java.util.Iterator<Record>	loadRecords(java.lang.String source) Loads all records of the given source.
void	removeRecord(java.lang.String id) Removes the record.
void	storeRecord(Record record) Stores the given Record object.

Methods inherited from class java.lang.Object

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

Field Detail

BUNDLE_NAME

public static final java.lang.String BUNDLE_NAME

name of bundle. Used in configuration reading.

See Also:

Constant Field Values

PERSISTENCE_UNIT_NAME

public static final java.lang.String PERSISTENCE_UNIT_NAME

Constant for the eclipseLink persistence unit name.

See Also:

Constant Field Values

CONFIGURATION_FILE

public static final java.lang.String CONFIGURATION_FILE

name of configuration file. Hardcoded for now (or fallback), configuration properties should be received from configuration service later.

See Also:

Constant Field Values

Constructor Detail

RecordStorageImpl

public RecordStorageImpl()

Default Constructor.

Method Detail

activate

protected void activate(ComponentContext context)
                 throws java.lang.Exception

DS activate method.

Parameters:

context - ComponentContext

Throws:

java.lang.Exception - if any error occurs

deactivate

protected void deactivate(ComponentContext context)
                   throws java.lang.Exception

DS deactivate method.

Parameters:

context - the ComponentContext

Throws:

java.lang.Exception - if any error occurs

loadRecord

public Record loadRecord(java.lang.String id)
                  throws RecordStorageException

Load the record from storage.

Specified by:

loadRecord in interface RecordStorage

Parameters:

id - Id of the record

Returns:

a Record object or null, if no record with the given Id exists

Throws:

RecordStorageException - if any error occurs

storeRecord

public void storeRecord(Record record)
                 throws RecordStorageException

Stores the given Record object. An existing Record with the same ID is overwritten by the given record.

Specified by:

storeRecord in interface RecordStorage

Parameters:

record - the Record object

Throws:

RecordStorageException - if any error occurs

removeRecord

public void removeRecord(java.lang.String id)
                  throws RecordStorageException

Removes the record.

Specified by:

removeRecord in interface RecordStorage

Parameters:

id - Id of the record

Throws:

RecordStorageException - if any error occurs

existsRecord

public boolean existsRecord(java.lang.String id)
                     throws RecordStorageException

Checks if a Record exists in the storage.

Specified by:

existsRecord in interface RecordStorage

Parameters:

id - Id of the record

Returns:

true if a record with the given Id exists, false otherwise

Throws:

RecordStorageException - if any error occurs

loadRecords

public java.util.Iterator<Record> loadRecords(java.lang.String source)
                                       throws RecordStorageException

Loads all records of the given source.

Specified by:

loadRecords in interface RecordStorage

Parameters:

source - the name of the data source

Returns:

an Iterator over the Record objects

Throws:

RecordStorageException - if any error occurs

See Also:

org.eclipse.smila.recordstorage.RecordStorage#findRecordsBySource(java.lang.String)