org.encog.ml.data.buffer.codec

Class SQLCODEC

java.lang.Object

org.encog.ml.data.buffer.codec.SQLCODEC

All Implemented Interfaces:

DataSetCODEC

public class SQLCODEC
extends java.lang.Object
implements DataSetCODEC

A CODEC that is designed to read data from an SQL source. This is a read-only codec.

Constructor Summary

Constructors

Constructor and Description
SQLCODEC(java.sql.Connection theConnection, java.lang.String theSQL, int theInputSize, int theIdealSize) Create a SQLNeuralDataSet based on the specified connection.
SQLCODEC(java.lang.String theSQL, int theInputSize, int theIdealSize, java.lang.String theDriver, java.lang.String theURL, java.lang.String theUID, java.lang.String thePWD) Construct a SQL dataset.

Method Summary

Modifier and Type	Method and Description
void	close() Close any open files.
int	getFetchSize()
int	getIdealSize()
int	getInputSize()
void	prepareRead() Prepare to read from an external data source.
void	prepareWrite(int recordCount, int theInputSize, int theIdealSize) Prepare to write to an external data destination.
boolean	read(double[] input, double[] ideal, double[] significance) Read one record of data from an external source.
void	setFetchSize(int theFetchSize)
void	write(double[] input, double[] ideal, double significance) Write one record of data to an external destination.

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLCODEC

public SQLCODEC(java.sql.Connection theConnection,
                java.lang.String theSQL,
                int theInputSize,
                int theIdealSize)

Create a SQLNeuralDataSet based on the specified connection. This connection WILL NOT be closed when the close method is called.

Parameters:

theConnection - The connection to use.

theSQL - The SQL command to execute.

theInputSize - The size of the input data.

theIdealSize - The size of the ideal data.

SQLCODEC

public SQLCODEC(java.lang.String theSQL,
                int theInputSize,
                int theIdealSize,
                java.lang.String theDriver,
                java.lang.String theURL,
                java.lang.String theUID,
                java.lang.String thePWD)

Construct a SQL dataset. A connection will be opened, this connection will be closed when the close method is called.

Parameters:

theSQL - The SQL command to execute.

theInputSize - The size of the input data.

theIdealSize - The size of the ideal data.

theDriver - The driver to use.

theURL - The database connection URL.

theUID - The database user id.

thePWD - The database password.

Method Detail

close

public void close()

Close any open files.

Specified by:

close in interface DataSetCODEC

getIdealSize

public int getIdealSize()

Specified by:

getIdealSize in interface DataSetCODEC

Returns:

The size of the ideal data.

getInputSize

public int getInputSize()

Specified by:

getInputSize in interface DataSetCODEC

Returns:

The size of the input data.

prepareRead

public void prepareRead()

Prepare to read from an external data source.

Specified by:

prepareRead in interface DataSetCODEC

prepareWrite

public void prepareWrite(int recordCount,
                         int theInputSize,
                         int theIdealSize)

Prepare to write to an external data destination.

Specified by:

prepareWrite in interface DataSetCODEC

Parameters:

recordCount - The total record count, that will be written.

theInputSize - The input size.

theIdealSize - The ideal size.

read

public boolean read(double[] input,
                    double[] ideal,
                    double[] significance)

Read one record of data from an external source.

Specified by:

read in interface DataSetCODEC

Parameters:

input - The input data array.

ideal - The ideal data array.

significance - The significance. The first element will be modified to hold the significance.

Returns:

True, if there is more data to be read.

write

public void write(double[] input,
                  double[] ideal,
                  double significance)

Write one record of data to an external destination.

Specified by:

write in interface DataSetCODEC

Parameters:

input - The input data array.

ideal - The ideal data array.

significance - The significance (full = 1.0)

getFetchSize

public int getFetchSize()

Returns:

the fetchSize

setFetchSize

public void setFetchSize(int theFetchSize)

Parameters:

theFetchSize - the fetchSize to set