org.deegree.services.wpvs.io.db
Class DBBackend<G>

java.lang.Object
  org.deegree.services.wpvs.io.ModelBackend<G>
      org.deegree.services.wpvs.io.db.DBBackend<G>

Type Parameters:

G - the Geometry type used to create the envelope from.

All Implemented Interfaces:

Resource, RenderableStore

Direct Known Subclasses:

PostgisBackend

public abstract class DBBackend<G>
extends ModelBackend<G>

The DBBackend provides methods for connections to the wpvs model in a database.

Version:

$Revision: 29642 $, $Date: 2011-02-11 13:59:33 +0100 (Fri, 11 Feb 2011) $

Author:

Rutger Bezema, last edited by: $Author: lbuesching $

Nested Class Summary

Nested classes/interfaces inherited from class org.deegree.services.wpvs.io.ModelBackend

ModelBackend.Type

Method Summary

BackendResult	delete(String uuid, ModelBackend.Type objectType, int qualityLevel, String sqlWhere) Delete some data from the backend.
void	flush() flush any cached data to the backend and close the connections.
ModelBackendInfo	getBackendInfo(ModelBackend.Type type) Retrieve some information on the number of vertices and texture coordinates used in the backend.
Connection	getConnection()
protected abstract Envelope	getDatasetEnvelope(Connection con, String tableName, String geomColumn) Should return the envelope in WPVS scene coordinates, not in world coordinates.
Object	getDeSerializedObjectForUUID(ModelBackend.Type objectType, String uuid) Retrieves and deserializes an object from the given type.
List<Object>	getDeSerializedObjectsForSQL(ModelBackend.Type objectType, String sqlWhere) Retrieves and deserializes objects from the given type.
<P extends PositionableModel> BackendResult	insert(List<DataObjectInfo<P>> model, ModelBackend.Type objectType) Insert given data into the backend.
boolean	isBillboard()
void	loadBuildings(BuildingRenderer bm, ICRS baseCRS) Retrieves the WorldRenderable objects from the backend.
void	loadEntities(RenderableManager<?> renderer, ICRS baseCRS)
List<RenderablePrototype>	loadProtoTypes(DirectGeometryBuffer geometryBuffer, ICRS baseCRS) Retrieves the WorldRenderable objects from the prototypes table in the database.
void	loadTrees(TreeRenderer tm, ICRS baseCRS) Retrieves the Billboard objects from the backend.

Methods inherited from class org.deegree.services.wpvs.io.ModelBackend

createBackendEnvelope, createEnvelope, getBaseCRS, getBuildingSerializer, getDriverPrefix, getInstance, getPrototypeSerializer, getSerializerForType, getTreeSerializer, getWPVSTranslationVector, setWPVSBaseCRS, setWPVSTranslationVector

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.commons.config.Resource

destroy, init

Method Detail

loadProtoTypes

public List<RenderablePrototype> loadProtoTypes(DirectGeometryBuffer geometryBuffer,
                                                ICRS baseCRS)

Description copied from class: ModelBackend

Retrieves the WorldRenderable objects from the prototypes table in the database.

Specified by:

loadProtoTypes in interface RenderableStore

Specified by:

loadProtoTypes in class ModelBackend<G>

baseCRS - the crs of the WPVS scene

Returns:

the list of prototypes or the empty list if an error occurred, never null.

loadBuildings

public void loadBuildings(BuildingRenderer bm,
                          ICRS baseCRS)

Description copied from class: ModelBackend

Retrieves the WorldRenderable objects from the backend.

Specified by:

loadBuildings in class ModelBackend<G>

Parameters:

bm - to add the building to

baseCRS - the crs of the WPVS scene

loadTrees

public void loadTrees(TreeRenderer tm,
                      ICRS baseCRS)

Description copied from class: ModelBackend

Retrieves the Billboard objects from the backend.

Specified by:

loadTrees in class ModelBackend<G>

Parameters:

tm - to add the trees to.

baseCRS - the crs of the WPVS scene

getDeSerializedObjectForUUID

public Object getDeSerializedObjectForUUID(ModelBackend.Type objectType,
                                           String uuid)
                                    throws IOException

Description copied from class: ModelBackend

Retrieves and deserializes an object from the given type.

Specified by:

getDeSerializedObjectForUUID in class ModelBackend<G>

uuid - of the object

Returns:

the deserialized object or null if given uuid did not match.

Throws:

IOException

getDeSerializedObjectsForSQL

public List<Object> getDeSerializedObjectsForSQL(ModelBackend.Type objectType,
                                                 String sqlWhere)
                                          throws IOException

Description copied from class: ModelBackend

Retrieves and deserializes objects from the given type.

Specified by:

getDeSerializedObjectsForSQL in class ModelBackend<G>

sqlWhere - to select the objects to retrieve

Returns:

the list of deserialized object or the emtpy list if no results matched.

Throws:

IOException

delete

public BackendResult delete(String uuid,
                            ModelBackend.Type objectType,
                            int qualityLevel,
                            String sqlWhere)
                     throws IOException

Description copied from class: ModelBackend

Delete some data from the backend.

Specified by:

delete in class ModelBackend<G>

Parameters:

uuid - the id of the object to delete.

objectType - defining the type of object.

Returns:

the number of records deleted by the given id.

Throws:

IOException

insert

public <P extends PositionableModel> BackendResult insert(List<DataObjectInfo<P>> model,
                                                          ModelBackend.Type objectType)
                     throws IOException

Description copied from class: ModelBackend

Insert given data into the backend.

Specified by:

insert in class ModelBackend<G>

Type Parameters:

P - type of the positionable

objectType - defining the type of the dataModel

Returns:

information about the inserted objects.

Throws:

IOException

getConnection

public Connection getConnection()
                         throws SQLException

Returns:

a connection to the database

Throws:

SQLException

getBackendInfo

public ModelBackendInfo getBackendInfo(ModelBackend.Type type)

Description copied from class: ModelBackend

Retrieve some information on the number of vertices and texture coordinates used in the backend.

Specified by:

getBackendInfo in class ModelBackend<G>

Returns:

some information on the backend.

flush

public void flush()

Description copied from class: ModelBackend

flush any cached data to the backend and close the connections.

Specified by:

flush in class ModelBackend<G>

loadEntities

public void loadEntities(RenderableManager<?> renderer,
                         ICRS baseCRS)

isBillboard

public boolean isBillboard()

getDatasetEnvelope

protected abstract Envelope getDatasetEnvelope(Connection con,
                                               String tableName,
                                               String geomColumn)
                                        throws SQLException

Should return the envelope in WPVS scene coordinates, not in world coordinates.

Parameters:

con -

tableName -

geomColumn -

Returns:

the envelope of the given dataset.

Throws:

SQLException