ilog.views.maps.datasource

Class IlvSDODataSource.OracleIterator

java.lang.Object

ilog.views.maps.datasource.IlvMapDelegateFeatureIterator

ilog.views.maps.datasource.IlvSDODataSource.OracleIterator

All Implemented Interfaces:

IlvPersistentObject, IlvMapFeatureIterator, IlvMapReusableFeatureIterator, IlvMapRegionOfInterestIterator, Serializable

Enclosing class:

IlvSDODataSource

public static class IlvSDODataSource.OracleIterator
extends IlvMapDelegateFeatureIterator
implements IlvMapRegionOfInterestIterator, IlvPersistentObject

An internal IlvMapRegionOfInterestIterator to go over an Oracle SDO connection.

Since:

JViews 7.5

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
OracleIterator(IlvInputStream stream) Reads an OracleIterator from the specified input stream.
OracleIterator(IlvSDOConnection connection, boolean isObjectModel, String layerName) Creates an OracleIterator from a specified Oracle SDO connection.
OracleIterator(IlvSDOConnection connection, boolean isObjectModel, String layerName, IlvThreadedActivityMonitor tmonitor) Creates an OracleIterator from a specified Oracle SDO connection.

Method Summary

Modifier and Type	Method and Description
IlvCoordinateSystem	getCoordinateSystem() Returns the spatial reference system that describes the coordinate system of geometric coordinates of the map features.
Rectangle2D	getLatLonBounds() Returns the bounds of all objects returned by this feature iterator.
IlvMapFeature	getNextFeature() Returns the next map feature of the iterator.
IlvRect	getSize() Returns the bounds of all objects returned by this feature iterator.
void	restart() Rewinds the iterator for new use.
void	setRegionOfInterest(double minX, double minY, double maxX, double maxY) Sets the region of interest to return features for.
void	write(IlvOutputStream stream) Writes an OracleIterator to the specified input stream.

Methods inherited from class ilog.views.maps.datasource.IlvMapDelegateFeatureIterator

dispose, getDefaultFeatureRenderer, getDelegate, getLowerRightCorner, getUpperLeftCorner, isGeoreferenced, setDelegate

Methods inherited from class java.lang.Object

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

Methods inherited from interface ilog.views.maps.IlvMapFeatureIterator

dispose, getDefaultFeatureRenderer, getLowerRightCorner, getUpperLeftCorner, isGeoreferenced

Constructor Detail

OracleIterator

public OracleIterator(IlvSDOConnection connection,
                      boolean isObjectModel,
                      String layerName)

Creates an OracleIterator from a specified Oracle SDO connection.

Parameters:

connection - The SDO connection to read map features from.

isObjectModel - Set to true if the Oracle database follows the object model. Set to false for the relational model.

layerName - The name of the layer to fetch.

OracleIterator

public OracleIterator(IlvSDOConnection connection,
                      boolean isObjectModel,
                      String layerName,
                      IlvThreadedActivityMonitor tmonitor)

Creates an OracleIterator from a specified Oracle SDO connection.

Parameters:

connection - The SDO connection to read map features from.

isObjectModel - Set to true if the Oracle database follows the object model. Set to false for the relational model.

layerName - The name of the layer to fetch.

tmonitor - Thread monitor or null.

Since:

JViews 8.1

OracleIterator

public OracleIterator(IlvInputStream stream)
               throws IlvReadFileException

Reads an OracleIterator from the specified input stream.

Parameters:

stream - The IlvInputStream to read from.

Throws:

IlvReadFileException - if an exception occurs during the reading process.

Method Detail

write

public void write(IlvOutputStream stream)
           throws IOException

Writes an OracleIterator to the specified input stream.

Specified by:

write in interface IlvPersistentObject

Parameters:

stream - The IlvOutputStream to write to.

Throws:

IOException - if an exception occurs during the writing process.

getCoordinateSystem

public IlvCoordinateSystem getCoordinateSystem()

Returns the spatial reference system that describes the coordinate system of geometric coordinates of the map features.

Specified by:

getCoordinateSystem in interface IlvMapFeatureIterator

Overrides:

getCoordinateSystem in class IlvMapDelegateFeatureIterator

Returns:

The coordinate system. Returns null if the coordinate system is unknown.

See Also:

IlvMapFeatureIterator.getCoordinateSystem()

restart

public void restart()

Rewinds the iterator for new use.

Specified by:

restart in interface IlvMapReusableFeatureIterator

Specified by:

restart in class IlvMapDelegateFeatureIterator

See Also:

IlvMapReusableFeatureIterator.restart()

setRegionOfInterest

public void setRegionOfInterest(double minX,
                                double minY,
                                double maxX,
                                double maxY)

Sets the region of interest to return features for.

Specified by:

setRegionOfInterest in interface IlvMapRegionOfInterestIterator

Parameters:

minX - The left coordinate of the area of interest.

minY - The bottom coordinate of the area of interest.

maxX - The right coordinate of the area of interest.

maxY - The top coordinate of the area of interest.

See Also:

IlvMapRegionOfInterestIterator.setRegionOfInterest(double, double, double, double)

getNextFeature

public IlvMapFeature getNextFeature()
                             throws IOException

Returns the next map feature of the iterator.

Specified by:

getNextFeature in interface IlvMapFeatureIterator

Overrides:

getNextFeature in class IlvMapDelegateFeatureIterator

Returns:

The next map feature of the iterator or null if the iteration is finished.

Throws:

IOException

See Also:

IlvMapFeatureIterator.getNextFeature()

getSize

public IlvRect getSize()
                throws SQLException

Returns the bounds of all objects returned by this feature iterator.

Returns:

IlvRect A rectangle that bounds all oracle objects.

Throws:

SQLException

getLatLonBounds

public Rectangle2D getLatLonBounds()

Returns the bounds of all objects returned by this feature iterator.

Specified by:

getLatLonBounds in interface IlvMapRegionOfInterestIterator

Returns:

IlvRect The bounds of all oracle objects.

Since:

JViews 7.5