com.ontimize.util.gis.server.dataproviders
Class GeoImageDataProvider

java.lang.Object
  com.ontimize.util.gis.server.dataproviders.GeoImageDataProvider

All Implemented Interfaces:

IDataAccess, IDataProvider

public class GeoImageDataProvider
extends java.lang.Object
implements IDataAccess

Georreferenced image data provider.

Xml definition parameters:

Name	Description	Required
fileLocation	Location of the image file	Yes
boundingBox	Bounding box for the file. Description format --> "Env[minX:maxX,minY:maxY]"	Yes
coordinateReferenceSystem	Coordinate reference system for the image in EPSG format code	Yes

Sample definition code:

<DataProvider
    class="com.ontimize.util.gis.server.dataproviders.GeoImageDataProvider"
    type="raster">
    <Attribute name="fileLocation" value="images/greenwich_ecuatorial.png" />
    <Attribute name="boundingBox" value="Env[-1.0:1-0, -1.0:1.0]" />
    <Attribute name="coordinateReferenceSystem" value="EPSG:4326" />
</DataProvider>

Field Summary

protected java.lang.String	bboxString
protected static java.lang.String	BOUNDING_BOX
protected com.vividsolutions.jts.geom.Envelope	boundingBox
(package private) java.awt.image.BufferedImage	buffImage
protected static java.lang.String	COORDINATE_REFERENCE_SYSTEM
protected org.opengis.referencing.crs.CoordinateReferenceSystem	crs
protected java.lang.String	crsCode
protected static java.lang.String	FILE_LOCATION
protected java.lang.String	fileLocation
protected java.io.File	imageFile
protected java.net.URL	urlLocation

Constructor Summary

GeoImageDataProvider()

GeoImageDataProvider(java.util.Hashtable parameters)
Data provider for a gis raster layers where the data source is a georreferenced image Parameters in data provider xml definition: - "fileLocation": Location of the image file - "boundingBox": Bounding box for the file.

Method Summary

void	delete(java.lang.Object keysValues, int sessionId) This method must implement a standard delete operation over the set of records defined by keysValues.
void	initProvider(java.util.Hashtable<java.lang.String,java.lang.Object> parameters)
java.lang.Object	insert(java.lang.Object attributesValues, int sessionId) This method must implement a standard insert operation with the data contained in attributesValues parameter.
java.lang.Object	query(java.lang.Object keysValues, java.lang.Object attributes, int sessionId) This method must implement a standard query operation returning the set of data that matches the conditions specified by the keysValues parameter.
void	update(java.lang.Object keysValues, java.lang.Object attributesValues, int sessionId) This method must implement a standard update operation with the data specified in attributesValues over the set of records defined by keysValues.

Methods inherited from class java.lang.Object

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

Field Detail

FILE_LOCATION

protected static final java.lang.String FILE_LOCATION

See Also:

Constant Field Values

BOUNDING_BOX

protected static final java.lang.String BOUNDING_BOX

See Also:

Constant Field Values

COORDINATE_REFERENCE_SYSTEM

protected static final java.lang.String COORDINATE_REFERENCE_SYSTEM

See Also:

Constant Field Values

fileLocation

protected java.lang.String fileLocation

bboxString

protected java.lang.String bboxString

crsCode

protected java.lang.String crsCode

crs

protected org.opengis.referencing.crs.CoordinateReferenceSystem crs

boundingBox

protected com.vividsolutions.jts.geom.Envelope boundingBox

imageFile

protected java.io.File imageFile

urlLocation

protected java.net.URL urlLocation

buffImage

java.awt.image.BufferedImage buffImage

Constructor Detail

GeoImageDataProvider

public GeoImageDataProvider()

GeoImageDataProvider

public GeoImageDataProvider(java.util.Hashtable parameters)

Data provider for a gis raster layers where the data source is a georreferenced image Parameters in data provider xml definition: - "fileLocation": Location of the image file - "boundingBox": Bounding box for the file. Description format --> "Env[minX:maxX,minY:maxY]" - "coordinateReferenceSystem": Coordinate reference system for the image in EPSG format code --> "EPSG:crsNumber"

Parameters:

parameters - - Parameters Hashtable

Method Detail

initProvider

public void initProvider(java.util.Hashtable<java.lang.String,java.lang.Object> parameters)

Specified by:

initProvider in interface IDataProvider

delete

public void delete(java.lang.Object keysValues,
                   int sessionId)
            throws java.lang.Exception

Description copied from interface: IDataAccess

This method must implement a standard delete operation over the set of records defined by keysValues. So, only the records that comply with the conditions specified by keysValues will be deleted.

Specified by:

delete in interface IDataAccess

Parameters:

keysValues - The conditions that the records to be deleted must fulfill

sessionId - Session Id for this user

Throws:

java.lang.Exception

insert

public java.lang.Object insert(java.lang.Object attributesValues,
                               int sessionId)
                        throws java.lang.Exception

Description copied from interface: IDataAccess

This method must implement a standard insert operation with the data contained in attributesValues parameter.

Specified by:

insert in interface IDataAccess

Parameters:

attributesValues - Data to store

sessionId - Session Id for this user

Throws:

java.lang.Exception

update

public void update(java.lang.Object keysValues,
                   java.lang.Object attributesValues,
                   int sessionId)
            throws java.lang.Exception

Description copied from interface: IDataAccess

This method must implement a standard update operation with the data specified in attributesValues over the set of records defined by keysValues. So, only the records that comply with the conditions specified by keysValues will be updated to the new values specified by attributesValues.

Specified by:

update in interface IDataAccess

Parameters:

keysValues - The conditions that the records to be updated must fulfill

attributesValues - The data for updating the records to

sessionId - Session Id for this user

Throws:

java.lang.Exception

query

public java.lang.Object query(java.lang.Object keysValues,
                              java.lang.Object attributes,
                              int sessionId)
                       throws java.lang.Exception

Description copied from interface: IDataProvider

This method must implement a standard query operation returning the set of data that matches the conditions specified by the keysValues parameter. The attributes defines which attributes (or columns if data is obtained from a database) must be recovered, and keysValues specifies which set of records must be recovered.

Specified by:

query in interface IDataProvider

Parameters:

keysValues - Identifiers for the data

attributes - Data attributes to query

sessionId - Session Id for this user

Returns:

Requested data

Throws:

java.lang.Exception