GeoDataProducer

All Superinterfaces:

DataProducer

All Known Implementing Classes:

AbstractDataSetProducer
```
public interface GeoDataProducer
extends DataProducer
```
A generic spatial data producer that gets data from MDS on demand. You can think of a GeoDataProducer as a data cache for a particular theme or table. It is typically associated with a Layer object. When the viewport changes, the Layer object may ask its GeoDataProducer to load necessary data that fills the new viewport. A GeoDataProducer should always load its data in a separate thread, and update the layer when data loading is done. The producer will produce events on these occasions: - successful completion of data loading for the current request - exception during data loading

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`abortLoad()`
`void`	`clear()`	Clears all existing data.
`GeoObject[]`	`getData()`	Gets currently available (already loaded) data.
`java.awt.geom.Rectangle2D`	`getDataMBR()`	returns the MBR of all the data currently loaded.
`int`	`getTargetSRID()`	Gets the data SRID.
`void`	`loadData(java.awt.geom.Area queryArea, int qwSrid)`	Loads data for the given query window.
`void`	`loadData(java.awt.geom.Rectangle2D queryWindow, int qwSrid)`
`void`	`setTargetSRID(int srid)`	Sets the data SRID.

Methods inherited from interface oracle.spatial.network.nfe.vis.maps.core.DataProducer
getLayer, setLayer

- Method Detail
  - getData
```
GeoObject[] getData()
```
    Gets currently available (already loaded) data.
    
    Returns:
  - clear
```
void clear()
```
    Clears all existing data.
  - setTargetSRID
```
void setTargetSRID(int srid)
```
    Sets the data SRID. If the source data is not in this SRID, it will be transformed into this SRID.
    
    Parameters:
    
    srid -
  - getTargetSRID
```
int getTargetSRID()
```
    Gets the data SRID.
  - getDataMBR
```
java.awt.geom.Rectangle2D getDataMBR()
```
    returns the MBR of all the data currently loaded.
    
    Returns:
  - loadData
```
void loadData(java.awt.geom.Area queryArea,
              int qwSrid)
```
    Loads data for the given query window. If the query window is null or has an infinite size, then all available data will be loaded from the source.
    
    Parameters:
    
    queryArea -
    
    qwSrid - the SRID of the query area
  - loadData
```
void loadData(java.awt.geom.Rectangle2D queryWindow,
              int qwSrid)
```
  - abortLoad
```
void abortLoad()
```