com.viaoa.datasource.objectcache

Class OADataSourceObjectCache

java.lang.Object

com.viaoa.datasource.OADataSource

com.viaoa.datasource.autonumber.OADataSourceAuto

com.viaoa.datasource.objectcache.OADataSourceObjectCache

All Implemented Interfaces:

OADataSourceInterface

public class OADataSourceObjectCache
extends OADataSourceAuto

OADataSource for storing objects in serialized file.

Field Summary

Fields inherited from class com.viaoa.datasource.OADataSource

bAssignNumberOnCreate, bEnabled, bLast, dataSourceChangeCnter, guid, name

Constructor Summary

Constructors

Constructor and Description
OADataSourceObjectCache()
OADataSourceObjectCache(boolean bRegister)
OADataSourceObjectCache(boolean bRegister, boolean bMakeLastDataSource)
OADataSourceObjectCache(Hub hubNextNumber, boolean bRegister, boolean bMakeLastDataSource)

Method Summary

Modifier and Type	Method and Description
protected boolean	_loadFromStorageFile(File file, OAObjectInputStream ois)
protected void	_saveToStorageFile(File file, ObjectOutputStream oos, Object extraObject)
void	assignId(OAObject obj) Set any objectId properties that are of class Number (or primitive equiv) and whose value is "0" to the value in the NextNumber object found in getHub().
void	delete(OAObject obj) Does not support data storage.
void	deleteAll(Class c)
boolean	getSupportsPreCount() Can this datasource get a count of the objects that will be selected.
void	insert(OAObject object) Overwritten to only initialize object.
void	insertWithoutReferences(OAObject obj) Add/Insert a new Object into DataSource, without references (fkeys).
boolean	isClassSupported(Class clazz, OAFilter filter) Returns true if NextNumber2 with Class name as Id is in HubNextNumber or if getSupportAllClasses is true.
protected boolean	isOtherDataSource()
boolean	loadFromStorageFile(File file)
void	saveToStorageFile(File file, Object extraObject)
OADataSourceIterator	select(Class selectClass, String queryWhere, Object[] params, String queryOrder, OAObject whereObject, String propertyFromWhereObject, String extraWhere, int max, OAFilter filterx, boolean bDirty) Perform a query to retrieve objects from DataSource.
OADataSourceIterator	selectPassthru(Class selectClass, String queryWhere, String queryOrder, int max, OAFilter filter, boolean bDirty) Performs a select using native query language for DataSource.

Methods inherited from class com.viaoa.datasource.autonumber.OADataSourceAuto

count, countPassthru, execute, getGlobalNextNumber, getHub, getPropertyBlobValue, getSupportAllClasses, setGlobalNextNumber, setHub, setSupportAllClasses, supportsStorage, update, updateMany2ManyLinks, willCreatePropertyValue

Methods inherited from class com.viaoa.datasource.OADataSource

close, closeAll, count, count, count, count, count, count, count, count, count, count, countPassthru, countPassthru, finalize, getAllowIdChange, getAssignIdOnCreate, getChangeCounter, getDataSource, getDataSource, getDataSources, getEnabled, getGuid, getIgnoreWrites, getInfo, getInfo, getMaxLength, getName, getObject, getObject, getObject, getObject, getObject, getObject, getPosition, getReadOnly, isAllowingBatch, isAvailable, isClassSupported, isInTransaction, removeFromList, reopen, save, select, select, select, select, select, select, select, select, select, select, select, select, select, select, select, select, select, select, selectPassthru, selectPassthru, selectPassthru, selectPassthru, selectPassthru, setAssignIdOnCreate, setEnabled, setGuid, setIgnoreWrites, setLast, setName, setPosition, setReadOnly, toString, update

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.viaoa.datasource.OADataSourceInterface

backup, checkForCorruption, compress, isClient, restore

Constructor Detail

OADataSourceObjectCache

public OADataSourceObjectCache()

OADataSourceObjectCache

public OADataSourceObjectCache(boolean bRegister)

OADataSourceObjectCache

public OADataSourceObjectCache(boolean bRegister,
                               boolean bMakeLastDataSource)

OADataSourceObjectCache

public OADataSourceObjectCache(Hub hubNextNumber,
                               boolean bRegister,
                               boolean bMakeLastDataSource)

Method Detail

select

public OADataSourceIterator select(Class selectClass,
                                   String queryWhere,
                                   Object[] params,
                                   String queryOrder,
                                   OAObject whereObject,
                                   String propertyFromWhereObject,
                                   String extraWhere,
                                   int max,
                                   OAFilter filterx,
                                   boolean bDirty)

Description copied from class: OADataSource

Perform a query to retrieve objects from DataSource.

See OASelect for complete description on selects/queriess.

Specified by:

select in interface OADataSourceInterface

Overrides:

select in class OADataSourceAuto

Parameters:

selectClass - Class of object to create and return

queryWhere - query String using property paths based on Object structure. DataSource

params - list of values to replace '?' in queryWhere clause.

queryOrder - sort order

whereObject - master object to select from.

extraWhere - added to the query.

filterx - the datasource filter, used if the ds does not support queries (ex: sql) will convert query to native query language of the datasoure.

bDirty - true if objects should be fully populated, even if they are already loaded (in cache, etc).

Returns:

OADataSourceIterator that is used to return objects of type selectClass

See Also:

OASelect

selectPassthru

public OADataSourceIterator selectPassthru(Class selectClass,
                                           String queryWhere,
                                           String queryOrder,
                                           int max,
                                           OAFilter filter,
                                           boolean bDirty)

Description copied from class: OADataSource

Performs a select using native query language for DataSource.

Specified by:

selectPassthru in interface OADataSourceInterface

Overrides:

selectPassthru in class OADataSourceAuto

Parameters:

selectClass - Class of object to create and return

queryWhere - query based on DataSource structure.

Returns:

OADataSourceIterator that is used to return objects of type selectClass

See Also:

OASelect

assignId

public void assignId(OAObject obj)

Description copied from class: OADataSourceAuto

Set any objectId properties that are of class Number (or primitive equiv) and whose value is "0" to the value in the NextNumber object found in getHub(). This will also call OAObject.save() if Auto Save is true.

Specified by:

assignId in interface OADataSourceInterface

Overrides:

assignId in class OADataSourceAuto

getSupportsPreCount

public boolean getSupportsPreCount()

Description copied from class: OADataSource

Can this datasource get a count of the objects that will be selected.

Specified by:

getSupportsPreCount in interface OADataSourceInterface

Overrides:

getSupportsPreCount in class OADataSource

isOtherDataSource

protected boolean isOtherDataSource()

isClassSupported

public boolean isClassSupported(Class clazz,
                                OAFilter filter)

Description copied from class: OADataSourceAuto

Returns true if NextNumber2 with Class name as Id is in HubNextNumber or if getSupportAllClasses is true.

Specified by:

isClassSupported in interface OADataSourceInterface

Overrides:

isClassSupported in class OADataSourceAuto

Parameters:

clazz - class

filter - used to query the datasource

See Also:

OADataSourceAuto.getHub(), OADataSourceAuto.setSupportAllClasses(boolean)

insert

public void insert(OAObject object)

Description copied from class: OADataSourceAuto

Overwritten to only initialize object. OADataSourceNextNumber Does not support data storage.

Specified by:

insert in interface OADataSourceInterface

Overrides:

insert in class OADataSourceAuto

saveToStorageFile

public void saveToStorageFile(File file,
                              Object extraObject)
                       throws Exception

Throws:

Exception

_saveToStorageFile

protected void _saveToStorageFile(File file,
                                  ObjectOutputStream oos,
                                  Object extraObject)
                           throws Exception

Throws:

Exception

loadFromStorageFile

public boolean loadFromStorageFile(File file)
                            throws Exception

Throws:

Exception

_loadFromStorageFile

protected boolean _loadFromStorageFile(File file,
                                       OAObjectInputStream ois)
                                throws Exception

Throws:

Exception

insertWithoutReferences

public void insertWithoutReferences(OAObject obj)

Description copied from class: OADataSource

Add/Insert a new Object into DataSource, without references (fkeys).

Called directly by OAObject.saveWithoutReferences() to save a reference while saving another Object.

Specified by:

insertWithoutReferences in interface OADataSourceInterface

Overrides:

insertWithoutReferences in class OADataSourceAuto

See Also:

OAObject.save()

delete

public void delete(OAObject obj)

Description copied from class: OADataSourceAuto

Does not support data storage.

Specified by:

delete in interface OADataSourceInterface

Overrides:

delete in class OADataSourceAuto

deleteAll

public void deleteAll(Class c)

Specified by:

deleteAll in interface OADataSourceInterface

Overrides:

deleteAll in class OADataSource