org.h2gis.functions.io.file_table

Class FileEngine<Driver extends FileDriver>

java.lang.Object

org.h2gis.functions.io.file_table.FileEngine<Driver>

Type Parameters:

Driver - file driver

All Implemented Interfaces:

org.h2.api.TableEngine

Direct Known Subclasses:

DBFEngine, SHPEngine

public abstract class FileEngine<Driver extends FileDriver>
extends Object
implements org.h2.api.TableEngine

Implement theses abstract methods in order to define a file engine.

Author:

Nicolas Fortin

Constructor Summary

Constructors

Constructor and Description
FileEngine()

Method Summary

Modifier and Type	Method and Description
protected abstract Driver	createDriver(File filePath, List<String> args) Create the driver instance using the file name and additional arguments provided in SQL create table request.
org.h2.table.Table	createTable(org.h2.command.ddl.CreateTableData data)
protected abstract void	feedCreateTableData(Driver driver, org.h2.command.ddl.CreateTableData data) Add columns definition of the file into the CreateTableData instance.
static String	getUniqueColumnName(String base, List<org.h2.table.Column> columns) Compute unique column name among the other columns

Methods inherited from class java.lang.Object

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

Constructor Detail

FileEngine

public FileEngine()

Method Detail

createTable

public org.h2.table.Table createTable(org.h2.command.ddl.CreateTableData data)

Specified by:

createTable in interface org.h2.api.TableEngine

getUniqueColumnName

public static String getUniqueColumnName(String base,
                                         List<org.h2.table.Column> columns)

Compute unique column name among the other columns

Parameters:

base - Returned name if there is no duplicate

columns - Other existing columns

Returns:

Unique column name

createDriver

protected abstract Driver createDriver(File filePath,
                                       List<String> args)
                                throws IOException

Create the driver instance using the file name and additional arguments provided in SQL create table request.

Parameters:

filePath - First argument, file name

args - Additional argument, contains the file name as first argument

Returns:

Instance of FileDriver

Throws:

IOException

feedCreateTableData

protected abstract void feedCreateTableData(Driver driver,
                                            org.h2.command.ddl.CreateTableData data)
                                     throws IOException

Add columns definition of the file into the CreateTableData instance.

Parameters:

driver - driver object

data - Data to initialise

Throws:

IOException