org.fastnate.data.csv

Class AbstractCsvReader<R>

java.lang.Object

org.fastnate.data.csv.AbstractCsvReader<R>

Type Parameters:

R - the row type

Direct Known Subclasses:

AbstractCsvDataProvider

public abstract class AbstractCsvReader<R>
extends Object

Base class for reading a csv file into an object. Useful for constructing arbitrary object types - not only entities.

Author:

Andreas Penski

Constructor Summary

Constructors

Constructor and Description
AbstractCsvReader(File importPath) Creates a new instance of AbstractCsvReader.

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract Collection<? extends R>	createEntities(Map<String,String> row) Builds one or more entities from the given row.
static org.supercsv.io.CsvListReader	openCsvListReader(File importFile) Opens a CSV file.
protected Collection<R>	readImportFiles() Reads the import files.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractCsvReader

public AbstractCsvReader(File importPath)

Creates a new instance of AbstractCsvReader.

Parameters:

importPath - the path to a file or to a directory that contains *.csv files

Method Detail

openCsvListReader

public static org.supercsv.io.CsvListReader openCsvListReader(File importFile)
                                                       throws IOException

Opens a CSV file. If the given file ends with "gz", then the file is decompressed before using a GZIPInputStream.

Parameters:

importFile - the csv file

Returns:

a list reader

Throws:

IOException - on io exception

createEntities

protected abstract Collection<? extends R> createEntities(Map<String,String> row)

Builds one or more entities from the given row.

Parameters:

row - contains the mapping from the header names to the current row data

Returns:

the list of entities from that row

readImportFiles

protected Collection<R> readImportFiles()
                                 throws IOException

Reads the import files.

Returns:

collection of constructed entities

Throws:

IOException - on error