org.deegree.services.wpvs.io
Class ModelBackend<G>

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

Type Parameters:

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

All Implemented Interfaces:

Resource, RenderableStore

Direct Known Subclasses:

DBBackend, FileBackend

public abstract class ModelBackend<G>
extends Object
implements RenderableStore

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

Version:

$Revision: 30127 $, $Date: 2011-03-22 11:11:12 +0100 (Tue, 22 Mar 2011) $

Author:

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

Nested Class Summary

static class

ModelBackend.Type The Types known to the modelbackend

Constructor Summary

ModelBackend()

Method Summary

abstract G	createBackendEnvelope(Envelope geometry, int dimension)
abstract Envelope	createEnvelope(G someGeometry) Create an envelope from the given Geometry type.
abstract BackendResult	delete(String uuid, ModelBackend.Type objectType, int qualityLevel, String sqlWhere) Delete some data from the backend.
abstract void	flush() flush any cached data to the backend and close the connections.
abstract ModelBackendInfo	getBackendInfo(ModelBackend.Type type) Retrieve some information on the number of vertices and texture coordinates used in the backend.
ICRS	getBaseCRS()
WROSerializer	getBuildingSerializer()
abstract Object	getDeSerializedObjectForUUID(ModelBackend.Type objectType, String uuid) Retrieves and deserializes an object from the given type.
abstract List<Object>	getDeSerializedObjectsForSQL(ModelBackend.Type objectType, String sqlWhere) Retrieves and deserializes objects from the given type.
protected abstract String	getDriverPrefix()
static ModelBackend<?>	getInstance(String id, String fileURL) Creates the appropriate database backend for the given connection id.
PrototypeSerializer	getPrototypeSerializer()
ObjectSerializer<?>	getSerializerForType(ModelBackend.Type objectType)
BillBoardSerializer	getTreeSerializer()
double[]	getWPVSTranslationVector()
abstract <P extends PositionableModel> BackendResult	insert(List<DataObjectInfo<P>> objects, ModelBackend.Type objectType) Insert given data into the backend.
abstract void	loadBuildings(BuildingRenderer bm, ICRS baseCRS) Retrieves the WorldRenderable objects from the backend.
abstract List<RenderablePrototype>	loadProtoTypes(DirectGeometryBuffer geometryBuffer, ICRS baseCRS) Retrieves the WorldRenderable objects from the prototypes table in the database.
abstract void	loadTrees(TreeRenderer tm, ICRS baseCRS) Retrieves the Billboard objects from the backend.
void	setWPVSBaseCRS(ICRS baseCRS)
void	setWPVSTranslationVector(double[] wpvsTranslationVector)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deegree.rendering.r3d.persistence.RenderableStore

isBillboard, loadEntities

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

destroy, init

Constructor Detail

ModelBackend

public ModelBackend()

Method Detail

getTreeSerializer

public final BillBoardSerializer getTreeSerializer()

Returns:

the treeSerializer

getBuildingSerializer

public final WROSerializer getBuildingSerializer()

Returns:

the buildingSerializer

getPrototypeSerializer

public final PrototypeSerializer getPrototypeSerializer()

Returns:

the prototypeSerializer

getBackendInfo

public abstract ModelBackendInfo getBackendInfo(ModelBackend.Type type)

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

Parameters:

type -

Returns:

some information on the backend.

loadProtoTypes

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

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

Specified by:

loadProtoTypes in interface RenderableStore

Parameters:

geometryBuffer -

baseCRS - the crs of the WPVS scene

Returns:

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

loadBuildings

public abstract void loadBuildings(BuildingRenderer bm,
                                   ICRS baseCRS)

Retrieves the WorldRenderable objects from the backend.

Parameters:

bm - to add the building to

baseCRS - the crs of the WPVS scene

loadTrees

public abstract void loadTrees(TreeRenderer tm,
                               ICRS baseCRS)

Retrieves the Billboard objects from the backend.

Parameters:

tm - to add the trees to.

baseCRS - the crs of the WPVS scene

getDeSerializedObjectsForSQL

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

Retrieves and deserializes objects from the given type.

Parameters:

objectType -

sqlWhere - to select the objects to retrieve

Returns:

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

Throws:

IOException

getDeSerializedObjectForUUID

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

Retrieves and deserializes an object from the given type.

Parameters:

objectType -

uuid - of the object

Returns:

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

Throws:

IOException

createEnvelope

public abstract Envelope createEnvelope(G someGeometry)

Create an envelope from the given Geometry type.

Parameters:

someGeometry -

Returns:

the envelope

createBackendEnvelope

public abstract G createBackendEnvelope(Envelope geometry,
                                        int dimension)

Parameters:

geometry -

dimension - of the result geometry

Returns:

an envelope created from the given geometry

delete

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

Delete some data from the backend.

Parameters:

uuid - the id of the object to delete.

objectType - defining the type of object.

sqlWhere -

qualityLevel -

Returns:

the number of records deleted by the given id.

Throws:

IOException

insert

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

Insert given data into the backend.

Type Parameters:

P - type of the positionable

Parameters:

objects -

objectType - defining the type of the dataModel

Returns:

information about the inserted objects.

Throws:

IOException

getInstance

public static ModelBackend<?> getInstance(String id,
                                          String fileURL)
                                   throws DatasourceException,
                                          UnsupportedOperationException

Creates the appropriate database backend for the given connection id. Or throws an UnsupportedOperationException if the driver was not supported.

Parameters:

id - to be used to initialize the if it contains org.deegree.services.wpvs.io.file.FileBackend, the file backend will be initialized.

fileURL - of the file backend files

Returns:

a ModelBackendInstance associated with the given driver.

Throws:

DatasourceException - if the driver was not found on the classpath, or could not be initialized.

UnsupportedOperationException - if the given driver has no implementing backend.

getDriverPrefix

protected abstract String getDriverPrefix()

Returns:

the prefix of the backend, which should be prefixed to the hosturl.

getSerializerForType

public ObjectSerializer<?> getSerializerForType(ModelBackend.Type objectType)

Parameters:

objectType -

Returns:

the mapped object serializer.

flush

public abstract void flush()
                    throws IOException

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

Throws:

IOException - if flushing was not successful

getWPVSTranslationVector

public final double[] getWPVSTranslationVector()

Returns:

the 3 dimensional wpvsTranslationVector, never null

setWPVSTranslationVector

public final void setWPVSTranslationVector(double[] wpvsTranslationVector)

Parameters:

wpvsTranslationVector - the 3 dimensional wpvsTranslationVector to set

setWPVSBaseCRS

public final void setWPVSBaseCRS(ICRS baseCRS)

Parameters:

baseCRS - of the wpvs

getBaseCRS

public ICRS getBaseCRS()

Returns:

the baseCRS (or null if not set)