org.deidentifier.arx.io

Class ImportAdapterCSV

java.lang.Object

org.deidentifier.arx.io.ImportAdapter

org.deidentifier.arx.io.ImportAdapterCSV

All Implemented Interfaces:

java.util.Iterator<java.lang.String[]>

public class ImportAdapterCSV
extends ImportAdapter

Import adapter for CSV files This adapter can import data from a CSV file. The CSV file itself is described by an appropriate ImportConfigurationCSV object. Internally this class makes use of CSVDataInput to read the CSV file on a line by line basis. A counting input stream (@link CountingInputStream} is used in order for {@link #getProgress() to be able to return the percentage of data that has already been processed.

Field Summary

Fields inherited from class org.deidentifier.arx.io.ImportAdapter

dataTypes, header, indexes

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ImportAdapterCSV(ImportConfigurationCSV config) Creates a new instance of this object with given configuration.

Method Summary

Modifier and Type	Method and Description
protected int[]	getIndexesToImport() Returns an array with indexes of columns that should be imported Only columns listed within #column will be imported.
java.lang.Integer	getLength() Returns the number of records, if available, null otherwise
int	getProgress() Returns the percentage of data that has already been returned This divides the amount of bytes that have already been read by the amount of total bytes and casts the result into a percentage.
boolean	hasNext() Indicates whether there is another element to return This returns true when the CSV file has another line, which would be assigned to row during the last iteration of next().
java.lang.String[]	next() Returns the next row The returned element is sorted as defined by ImportColumn#index and contains as many elements as there are columns selected to import from ImportAdapter.indexes.
void	remove() Dummy.

Methods inherited from class org.deidentifier.arx.io.ImportAdapter

create, getColumnDatatypes, getConfig, getHeader

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Iterator

forEachRemaining

Constructor Detail

ImportAdapterCSV

protected ImportAdapterCSV(ImportConfigurationCSV config)
                    throws java.io.IOException

Creates a new instance of this object with given configuration.

Parameters:

config - config

Throws:

java.io.IOException - In case file doesn't contain actual data

Method Detail

getLength

public java.lang.Integer getLength()

Description copied from class: ImportAdapter

Returns the number of records, if available, null otherwise

Overrides:

getLength in class ImportAdapter

Returns:

getProgress

public int getProgress()

Returns the percentage of data that has already been returned This divides the amount of bytes that have already been read by the amount of total bytes and casts the result into a percentage.

Specified by:

getProgress in class ImportAdapter

Returns:

hasNext

public boolean hasNext()

Indicates whether there is another element to return This returns true when the CSV file has another line, which would be assigned to row during the last iteration of next().

Returns:

next

public java.lang.String[] next()

Returns the next row The returned element is sorted as defined by ImportColumn#index and contains as many elements as there are columns selected to import from ImportAdapter.indexes. The first row will always contain the names of the columns. headerReturned is used to keep track of that.

Returns:

remove

public void remove()

Dummy.

getIndexesToImport

protected int[] getIndexesToImport()

Returns an array with indexes of columns that should be imported Only columns listed within #column will be imported. This iterates over the list of columns and returns an array with indexes of columns that should be imported.

Returns:

Array containing indexes of columns that should be imported