com.hardcode.gdbms.engine.data
Interface SpatialDataSource

All Superinterfaces:

DataSource, ReadAccess

All Known Implementing Classes:

DBSpatialDataSourceAdapter, SpatialFileDataSourceAdapter, SpatialObjectDataSourceAdapter, UndoableSpatialDataSource

public interface SpatialDataSource
extends DataSource

DataSource with spatial capabilities

Field Summary

static int	ANY
static int	LINE
static int	MULTILINE
static int	MULTIPOINT
static int	MULTIPOLYGON
static int	POINT
static int	POLYGON

Fields inherited from interface com.hardcode.gdbms.engine.data.DataSource

COHERENT_ROW_ORDER, DIRECT_MODE, DISPATCH, IGNORE, STORE

Method Summary

void	buildIndex() Builds a spatial index.
void	clearIndex() Clears the spatial index.
void	deleteRow(long rowId) Deletes the ith row of the DataSource if there is no spatial index.
java.awt.geom.Rectangle2D	getFullExtent() Gets the full extent of the data accessed
java.awt.geom.Rectangle2D	getGeometryBounds(long rowIndex) Gets the bounds of the geometry at the specified index.
int	getGeometryType() Gets the geometry type of the data source.
int	getSpatialFieldIndex() Returns the index of the field containing spatial data
void	insertEmptyRowAt(long index) Inserts an empty row at the end of the dataware.
void	insertFilledRowAt(long index, Value[] values) Inserts a row at the specified index with the specified values.
boolean	isIndexed()
java.util.List	queryIndex(java.awt.geom.Rectangle2D area) Queries the index and gets a List of Integer's with the indexes of those rows of the DataSource near the argument

Methods inherited from interface com.hardcode.gdbms.engine.data.DataSource

addEditionListener, addField, addField, addMetadataEditionListener, addSelectionListener, beginTrans, canRedo, canUndo, check, commitTrans, getAlias, getAsString, getDataSourceFactory, getDataSourceMetadata, getDispatchingMode, getDriver, getDriverMetadata, getFieldIndexByName, getFieldNames, getMemento, getName, getRow, getSelectedRows, getWhereFilter, insertEmptyRow, insertFilledRow, isModified, redo, remove, removeEditionListener, removeField, removeMetadataEditionListener, removeSelectionListener, rollBackTrans, saveData, setDataSourceFactory, setDispatchingMode, setFieldName, setFieldValue, setSelectedRows, start, stop, undo

Methods inherited from interface com.hardcode.gdbms.engine.data.driver.ReadAccess

getFieldValue, getRowCount

Field Detail

POINT

static final int POINT

See Also:

Constant Field Values

MULTIPOINT

static final int MULTIPOINT

See Also:

Constant Field Values

MULTILINE

static final int MULTILINE

See Also:

Constant Field Values

LINE

static final int LINE

See Also:

Constant Field Values

MULTIPOLYGON

static final int MULTIPOLYGON

See Also:

Constant Field Values

POLYGON

static final int POLYGON

See Also:

Constant Field Values

ANY

static final int ANY

See Also:

Constant Field Values

Method Detail

getFullExtent

java.awt.geom.Rectangle2D getFullExtent()
                                        throws DriverException

Gets the full extent of the data accessed

Returns:

Rectangle2D

Throws:

DriverException - if the operation fails

buildIndex

void buildIndex()
                throws DriverException

Builds a spatial index. A SpatialDataSource hasn't the same behaviour when there is an spatial index or not. So this operation causes the command history to be cleared

Throws:

DriverException - If the build fails

clearIndex

void clearIndex()
                throws DriverException

Clears the spatial index. As the buildIndex method, this one clears the command history

Throws:

DriverException

queryIndex

java.util.List queryIndex(java.awt.geom.Rectangle2D area)

Queries the index and gets a List of Integer's with the indexes of those rows of the DataSource near the argument

Parameters:

query - argument

Returns:

List of integer

isIndexed

boolean isIndexed()

Returns:

true if this datasource is spatially indexed and false otherwise

deleteRow

void deleteRow(long rowId)
               throws DriverException

Deletes the ith row of the DataSource if there is no spatial index. If there is, it sets all its values to null

Parameters:

rowId - index of the row to be deleted

Throws:

DriverException - if the row could not be deleted

insertFilledRowAt

void insertFilledRowAt(long index,
                       Value[] values)
                       throws DriverException,
                              java.lang.UnsupportedOperationException

Inserts a row at the specified index with the specified values. It won't work if there is a spatial index

Parameters:

values - Values of the inserted row fields in the field order

index - index where the row will be inserted. No data is lost.

Throws:

DriverException - if the row could not be inserted

java.lang.UnsupportedOperationException - If there is a spatial index

insertEmptyRowAt

void insertEmptyRowAt(long index)
                      throws DriverException,
                             java.lang.UnsupportedOperationException

Inserts an empty row at the end of the dataware. It won't work if there is a spatial index

Parameters:

index - index where the row will be inserted. No data is lost.

Throws:

DriverException - if the row could not be inserted

java.lang.UnsupportedOperationException - if there is a spatial index

getGeometryType

int getGeometryType()
                    throws DriverException

Gets the geometry type of the data source.

Returns:

int

Throws:

DriverException

getSpatialFieldIndex

int getSpatialFieldIndex()
                         throws DriverException

Returns the index of the field containing spatial data

Returns:

Throws:

DriverException

getGeometryBounds

java.awt.geom.Rectangle2D getGeometryBounds(long rowIndex)
                                            throws DriverException

Gets the bounds of the geometry at the specified index. If the geometry is NullValue, null is returned

Parameters:

j -

Returns:

Throws:

DriverException