org.datanucleus.store.types.geospatial.rdbms.mapping.mysql

Class MySQLSpatialRDBMSMapping

java.lang.Object

org.datanucleus.store.rdbms.mapping.datastore.AbstractDatastoreMapping

org.datanucleus.store.types.geospatial.rdbms.mapping.mysql.MySQLSpatialRDBMSMapping

All Implemented Interfaces:

org.datanucleus.store.rdbms.mapping.datastore.DatastoreMapping

Direct Known Subclasses:

GeometryRDBMSMapping, GeometryRDBMSMapping, JGeometryRDBMSMapping

public abstract class MySQLSpatialRDBMSMapping
extends org.datanucleus.store.rdbms.mapping.datastore.AbstractDatastoreMapping

Abstract base class for all MySQL spatial mappings. Contains helper methods that convert WKB (Well Known Binary) data to MySQL spatial objects and vice versa.

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	SRID_LENGTH

Fields inherited from class org.datanucleus.store.rdbms.mapping.datastore.AbstractDatastoreMapping

column, mapping, storeMgr

Constructor Summary

Constructors

Constructor and Description
MySQLSpatialRDBMSMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping mapping, org.datanucleus.store.rdbms.RDBMSStoreManager storeMgr, org.datanucleus.store.rdbms.table.Column col)

Method Summary

Modifier and Type	Method and Description
protected void	initialize()
protected int	mysqlBinaryToSrid(byte[] mysqlBinary) Extracts the SRID of a spatial object in MySQL binary format.
protected byte[]	mysqlBinaryToWkb(byte[] mysqlBinary) Converts a spatial object from MySQL binary format to WKB.
protected byte[]	wkbToMysqlBinary(byte[] wkb, int srid) Converts a spatial object from WKB to MySQL binary format.

Methods inherited from class org.datanucleus.store.rdbms.mapping.datastore.AbstractDatastoreMapping

equals, failureMessage, failureMessage, failureMessage, getBoolean, getByte, getChar, getColumn, getDatastoreAdapter, getDouble, getFloat, getInsertionInputParameter, getInt, getJavaTypeMapping, getLong, getObject, getShort, getString, getTypeInfo, getUpdateInputParameter, hashCode, includeInFetchStatement, initTypeInfo, insertValuesOnInsert, isBitBased, isBooleanBased, isDecimalBased, isIntegerBased, isNullable, isStringBased, setBoolean, setByte, setChar, setDouble, setFloat, setInt, setLong, setObject, setShort, setString

Methods inherited from class java.lang.Object

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

Field Detail

SRID_LENGTH

protected static final int SRID_LENGTH

See Also:

Constant Field Values

Constructor Detail

MySQLSpatialRDBMSMapping

public MySQLSpatialRDBMSMapping(org.datanucleus.store.rdbms.mapping.java.JavaTypeMapping mapping,
                                org.datanucleus.store.rdbms.RDBMSStoreManager storeMgr,
                                org.datanucleus.store.rdbms.table.Column col)

Method Detail

initialize

protected void initialize()

mysqlBinaryToWkb

protected byte[] mysqlBinaryToWkb(byte[] mysqlBinary)
                           throws SQLException

Converts a spatial object from MySQL binary format to WKB.

Parameters:

mysqlBinary - A spatial object in MySQL binary format.

Returns:

The spatial object as WKB.

Throws:

SQLException - If the object contains invalid data.

mysqlBinaryToSrid

protected int mysqlBinaryToSrid(byte[] mysqlBinary)
                         throws SQLException

Extracts the SRID of a spatial object in MySQL binary format.

Parameters:

mysqlBinary - A spatial object in MySQL binary format.

Returns:

The SRID

Throws:

SQLException - If the object contains invalid data.

wkbToMysqlBinary

protected byte[] wkbToMysqlBinary(byte[] wkb,
                                  int srid)
                           throws SQLException

Converts a spatial object from WKB to MySQL binary format.

Parameters:

wkb - A spatial object in WKB format.

srid - The SRID of the spatial object.

Returns:

The spatial object in MySQL binary format.

Throws:

SQLException - If the object contains invalid data.