org.geotools.gce.imagemosaic.jdbc
Class DBDialect

Object
  DBDialect

Direct Known Subclasses:

DB2Dialect, MySqlDialect, OracleDialect, PostgisDialect, UniversalDialect

public abstract class DBDialect
extends Object

This class is the base class for the different sql dialects used in spatial extensions form different vendors

Since:

2.5

Author:

mcr

Field Summary

protected Config	config
protected DataSource	dataSource

Constructor Summary

DBDialect(Config config)
Constructor

Method Summary

protected abstract String	getBLOBSQLType()
protected Config	getConfig()
Connection	getConnection()
protected abstract String	getCreateIndexStatement(String tn)
protected String	getCreateSpatialTableStatement(String tableName)
protected String	getCreateSpatialTableStatementJoined(String tableName)
static DBDialect	getDBDialect(Config config) Factory method for obtaining a DBDialect object for a special spatial extension
protected String	getDoubleSQLType()
protected abstract String	getMultiPolygonSQLType()
protected String	getRegisterSpatialStatement(String tn, String srs)
protected String	getUnregisterSpatialStatement(String tn)

Methods inherited from class Object

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

Field Detail

dataSource

protected DataSource dataSource

config

protected Config config

Constructor Detail

DBDialect

public DBDialect(Config config)

Constructor

Parameters:

config -

Method Detail

getDBDialect

public static DBDialect getDBDialect(Config config)

Factory method for obtaining a DBDialect object for a special spatial extension

Parameters:

config -

Returns:

getBLOBSQLType

protected abstract String getBLOBSQLType()

Returns:

the sql type name for a blob (Binary Large Object)

getMultiPolygonSQLType

protected abstract String getMultiPolygonSQLType()

Returns:

the sql type name for a Multipolygon

getConfig

protected Config getConfig()

Returns:

the config object for this dialect

getConnection

public Connection getConnection()
                         throws Exception

Returns:

jdbc connection

Throws:

Exception

getUnregisterSpatialStatement

protected String getUnregisterSpatialStatement(String tn)

Parameters:

tn - sql table name

Returns:

sql unregister spatial column statement for nt

getRegisterSpatialStatement

protected String getRegisterSpatialStatement(String tn,
                                             String srs)

Parameters:

tn - sql table name

srs - name of spatial reference system to use

Returns:

sql unregister spatial column statement for nt

getCreateIndexStatement

protected abstract String getCreateIndexStatement(String tn)
                                           throws Exception

Parameters:

tn - sql table name

Returns:

sql create spatial index statement for tn

Throws:

Exception

getDoubleSQLType

protected String getDoubleSQLType()

Returns:

sql datatype for 8 byte floating point

getCreateSpatialTableStatement

protected String getCreateSpatialTableStatement(String tableName)
                                         throws Exception

Parameters:

tableName -

Returns:

the sql create table statement for a spatial table

Throws:

Exception

getCreateSpatialTableStatementJoined

protected String getCreateSpatialTableStatementJoined(String tableName)
                                               throws Exception

Parameters:

tableName -

Returns:

the sql create table statement for a combined spatial/tile table named tableName

Throws:

Exception