de.sekmi.histream.export.csv

Class CSVWriter

java.lang.Object

de.sekmi.histream.export.csv.CSVWriter

All Implemented Interfaces:

ExportWriter, Closeable, AutoCloseable

public class CSVWriter
extends Object
implements ExportWriter

Write CSV files to a specified directory.

By default, the patients table is named "patients" + getFileExtension() and the visits table is named "visits" + getFileExtension(). The EAV tables are named by their specified ID (also with file extension). The patient and visit table names can be changed via setPatientTableName(String) and setVisitTableName(String).

The close() method does nothing, since individual files are written for each table, which in turn must be closed individually.

TODO maybe allow appending to files

Author:

R.W.Majeed

Constructor Summary

Constructors

Constructor and Description
CSVWriter(Path directory, char fieldSeparator, String fileSuffix) Create a CSV writer which creates table files in the specified directory.

Method Summary

Modifier and Type	Method and Description
void	close()
protected String	escapeData(String data) Escape data before it is written to the output file.
String	fileNameForTable(String tableName)
Charset	getCharset()
Path	getDirectory()
char	getFieldSeparator()
String	getFileExtension()
String	getPatientTableName()
String	getVisitTableName()
TableWriter	openEAVTable(String id)
TableWriter	openPatientTable()
TableWriter	openVisitTable()
void	setFileExtension(String suffix) Set the file name extension for table files (e.g.
void	setPatientTableName(String tableName)
void	setVisitTableName(String tableName)

Methods inherited from class java.lang.Object

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

Constructor Detail

CSVWriter

public CSVWriter(Path directory,
                 char fieldSeparator,
                 String fileSuffix)

Create a CSV writer which creates table files in the specified directory.

Parameters:

directory - directory where the table files should be created. Must be non-null.

fieldSeparator - field separator character.

fileSuffix - file name suffix (e.g. .csv)

Method Detail

getCharset

public Charset getCharset()

getDirectory

public Path getDirectory()

getFieldSeparator

public char getFieldSeparator()

fileNameForTable

public String fileNameForTable(String tableName)

setFileExtension

public void setFileExtension(String suffix)

Set the file name extension for table files (e.g. .csv). The extension is appended to table names to produce file names.

Parameters:

suffix - file name suffix (usually beginning with a dot)

getFileExtension

public String getFileExtension()

setVisitTableName

public void setVisitTableName(String tableName)

setPatientTableName

public void setPatientTableName(String tableName)

getPatientTableName

public String getPatientTableName()

getVisitTableName

public String getVisitTableName()

escapeData

protected String escapeData(String data)

Escape data before it is written to the output file.

If the data contains newline characters or field separators, these sequences will be escaped.

Parameters:

data - data field

Returns:

escaped data field

openPatientTable

public TableWriter openPatientTable()
                             throws IOException

Specified by:

openPatientTable in interface ExportWriter

Throws:

IOException

openVisitTable

public TableWriter openVisitTable()
                           throws IOException

Specified by:

openVisitTable in interface ExportWriter

Throws:

IOException

openEAVTable

public TableWriter openEAVTable(String id)
                         throws IOException

Specified by:

openEAVTable in interface ExportWriter

Throws:

IOException

close

public void close()

Specified by:

close in interface ExportWriter

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable