com.hardcode.gdbms.engine.data
Class AbstractDataSource

java.lang.Object
  com.hardcode.gdbms.engine.data.AbstractDataSource

All Implemented Interfaces:

DataSource, ReadAccess

public abstract class AbstractDataSource
extends java.lang.Object
implements DataSource

Field Summary

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

COHERENT_ROW_ORDER, DIRECT_MODE, DISPATCH, IGNORE, STORE

Constructor Summary

AbstractDataSource(java.lang.String name, java.lang.String alias)

Method Summary

java.lang.String	getAlias() Returns the alias used in this DataSource
java.lang.String	getAsString() Gets the string representation of this DataSource
DataSourceFactory	getDataSourceFactory() gets a reference to the factory object that created the DataSource
java.lang.String[]	getFieldNames() Gets the field names array
Memento	getMemento() Gets a memento object with the current status of the DataSource
java.lang.String	getName() Devuelve el nombre del DataSource
Value[]	getRow(long rowIndex) Gets the value of all fields at the specified row
long[]	getWhereFilter() Devuelve el filtro que resultó de la cláusula where de la instrucción que dió como resultado este DataSource.
void	remove() Removes from the system the data source this DataSource instance represents.
void	setAlias(java.lang.String alias)
void	setDataSourceFactory(DataSourceFactory dsf) Sets the DataSourceFactory that created the DataSource instance
void	setName(java.lang.String name)

Methods inherited from class java.lang.Object

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

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

addEditionListener, addField, addField, addMetadataEditionListener, addSelectionListener, beginTrans, canRedo, canUndo, check, commitTrans, getDataSourceMetadata, getDispatchingMode, getDriver, getDriverMetadata, getFieldIndexByName, getSelectedRows, insertEmptyRow, insertFilledRow, isModified, redo, removeEditionListener, removeField, removeMetadataEditionListener, removeSelectionListener, rollBackTrans, saveData, setDispatchingMode, setFieldName, setFieldValue, setSelectedRows, start, stop, undo

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

getFieldValue, getRowCount

Constructor Detail

AbstractDataSource

public AbstractDataSource(java.lang.String name,
                          java.lang.String alias)

Method Detail

setName

public void setName(java.lang.String name)

getAlias

public java.lang.String getAlias()

Description copied from interface: DataSource

Returns the alias used in this DataSource

Specified by:

getAlias in interface DataSource

Returns:

String

getAsString

public java.lang.String getAsString()
                             throws DriverException

Description copied from interface: DataSource

Gets the string representation of this DataSource

Specified by:

getAsString in interface DataSource

Returns:

String

Throws:

DriverException

getDataSourceFactory

public DataSourceFactory getDataSourceFactory()

Description copied from interface: DataSource

gets a reference to the factory object that created the DataSource

Specified by:

getDataSourceFactory in interface DataSource

Returns:

DataSourceFactory

getFieldNames

public java.lang.String[] getFieldNames()
                                 throws DriverException

Description copied from interface: DataSource

Gets the field names array

Specified by:

getFieldNames in interface DataSource

Returns:

String[]

Throws:

DriverException - if the access fails

getMemento

public Memento getMemento()
                   throws MementoException

Description copied from interface: DataSource

Gets a memento object with the current status of the DataSource

Specified by:

getMemento in interface DataSource

Returns:

DataSourceMemento

Throws:

MementoException - If the state cannot be obtained

getName

public java.lang.String getName()

Description copied from interface: DataSource

Devuelve el nombre del DataSource

Specified by:

getName in interface DataSource

Returns:

nombre de la tabla

getRow

public Value[] getRow(long rowIndex)
               throws DriverException

Description copied from interface: DataSource

Gets the value of all fields at the specified row

Specified by:

getRow in interface DataSource

Parameters:

rowIndex - index of the row to be retrieved

Returns:

Value[]

Throws:

DriverException - If the access fails

getWhereFilter

public long[] getWhereFilter()
                      throws java.io.IOException

Description copied from interface: DataSource

Devuelve el filtro que resultó de la cláusula where de la instrucción que dió como resultado este DataSource.

Specified by:

getWhereFilter in interface DataSource

Returns:

Filtro de la cláusula where o null si el DataSource no es resultado de una instrucción con cláusula where

Throws:

java.io.IOException - Si se produce un error accediendo a las estructuras de datos internas

remove

public void remove()
            throws DriverException

Description copied from interface: DataSource

Removes from the system the data source this DataSource instance represents. No method can be called and no DataSource instance can be obtained from the system after calling this method.

Specified by:

remove in interface DataSource

Throws:

DriverException - if the DataSource original system could not be cleaned properly

setAlias

public void setAlias(java.lang.String alias)

setDataSourceFactory

public void setDataSourceFactory(DataSourceFactory dsf)

Description copied from interface: DataSource

Sets the DataSourceFactory that created the DataSource instance

Specified by:

setDataSourceFactory in interface DataSource

Parameters:

dsf - DataSourceFactory