com.ibm.able.beans
Interface AbleImportData

All Known Implementing Classes:

AbleDataSet, AbleDBTable

public interface AbleImportData

The AbleDataSource interface is implemented to provide common information about data sources, the records they provide, and the fields contained by those records. When a data source is opened, it is required to create a vector of AbleFields.

Method Summary

void	close() Set the number of records in the data source
int	getBufferSize() Get the current buffer size, the number of records to cache.
java.util.Vector	getFieldList() Return a Vector of AbleFields describing this datasource.
int	getNumFieldsPerRec() Returns the number of fields in each record in the data source.
long	getNumRecords() Returns the number of records in the data source.
java.util.Vector	getTextData() Return a vector of text data records.
boolean	isAllNumericData() Returns true if all fields are "continuous" or "discrete", false if any are "categorical"; that is, symbols.
boolean	isReady() Returns whether the data source is ready to be opened.
void	open() Returns the number of records in the data source
void	readNextRecordBlock() Read the next block of records from the data source.
void	setBufferSize(int size) Get the current buffer size, the number of records to cache.
void	setFieldList(java.util.Vector fieldList) Set a Vector of AbleFields describing this datasource.

Method Detail

getNumRecords

public long getNumRecords()

Returns the number of records in the data source.

getNumFieldsPerRec

public int getNumFieldsPerRec()

Returns the number of fields in each record in the data source.

isReady

public boolean isReady()

Returns whether the data source is ready to be opened.

isAllNumericData

public boolean isAllNumericData()

Returns true if all fields are "continuous" or "discrete", false if any are "categorical"; that is, symbols.

getBufferSize

public int getBufferSize()

Get the current buffer size, the number of records to cache. A value of 0 means all records are kept in memory.

setBufferSize

public void setBufferSize(int size)

Get the current buffer size, the number of records to cache. A value of 0 means all records are kept in memory.

readNextRecordBlock

public void readNextRecordBlock()
                         throws AbleException

Read the next block of records from the data source. If the end of the data source occurs before the buffer size is reached, wrap to the beginning of the file and continue until the buffer size is obtained. This populates the text and numeric data records.

Throws:

AbleException

getTextData

public java.util.Vector getTextData()

Return a vector of text data records.

open

public void open()
          throws AbleException

Returns the number of records in the data source

Throws:

AbleException

close

public void close()
           throws AbleException

Set the number of records in the data source

Throws:

AbleException

getFieldList

public java.util.Vector getFieldList()

Return a Vector of AbleFields describing this datasource.

setFieldList

public void setFieldList(java.util.Vector fieldList)

Set a Vector of AbleFields describing this datasource.