Module org.jgrapht.io

Package org.jgrapht.nio.csv

Class CSVExporter<V,E>

java.lang.Object

org.jgrapht.nio.BaseExporter<V,E>

org.jgrapht.nio.csv.CSVExporter<V,E>

Type Parameters:

V - the graph vertex type

E - the graph edge type

All Implemented Interfaces:

GraphExporter<V,E>

public class CSVExporter<V,E>
extends BaseExporter<V,E>
implements GraphExporter<V,E>

Exports a graph into a CSV Format or any other Delimiter-separated value format.

The exporter supports three different formats which can be adjusted using the setFormat method. The supported formats are the same CSV formats used by Gephi . For some of the formats, the behavior of the exporter can be adjusted using the setParameter method. See CSVFormat for a description of the formats.

The default output respects rfc4180. The caller can also adjust the separator to something like semicolon or pipe instead of comma. In such a case, all fields are escaped using the new separator. See Delimiter-separated values for more information.

Author:

Dimitrios Michail

See Also:

• CSVFormat

Field Summary

Fields inherited from class org.jgrapht.nio.BaseExporter

edgeAttributeProvider, edgeIdProvider, graphAttributeProvider, graphIdProvider, vertexAttributeProvider, vertexIdProvider

Constructor Summary

Constructors

Constructor	Description
CSVExporter()	Creates a new CSVExporter with CSVFormat.ADJACENCY_LIST format and integer name provider for the vertices.
CSVExporter(Function<V,String> vertexIdProvider, CSVFormat format, char delimiter)	Constructs a new CSVExporter with the given ID providers and format.
CSVExporter(CSVFormat format)	Creates a new CSVExporter with integer id providers for the vertices.
CSVExporter(CSVFormat format, char delimiter)	Creates a new CSVExporter with integer id providers for the vertices.

Method Summary

Modifier and Type	Method	Description
void	exportGraph(Graph<V,E> g, Writer writer)	Exports a graph
char	getDelimiter()	Get the delimiter (comma, semicolon, pipe, etc).
CSVFormat	getFormat()	Get the format of the exporter
boolean	isParameter(CSVFormat.Parameter p)	Return if a particular parameter of the exporter is enabled
void	setDelimiter(char delimiter)	Set the delimiter (comma, semicolon, pipe, etc).
void	setFormat(CSVFormat format)	Set the format of the exporter
void	setParameter(CSVFormat.Parameter p, boolean value)	Set the value of a parameter of the exporter

Methods inherited from class org.jgrapht.nio.BaseExporter

getEdgeAttribute, getEdgeAttributeProvider, getEdgeAttributes, getEdgeId, getEdgeIdProvider, getGraphAttribute, getGraphAttributeProvider, getGraphId, getGraphIdProvider, getVertexAttribute, getVertexAttributeProvider, getVertexAttributes, getVertexId, getVertexIdProvider, setEdgeAttributeProvider, setEdgeIdProvider, setGraphAttributeProvider, setGraphIdProvider, setVertexAttributeProvider, setVertexIdProvider

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jgrapht.nio.GraphExporter

exportGraph, exportGraph

Constructor Details

CSVExporter

public CSVExporter()

Creates a new CSVExporter with CSVFormat.ADJACENCY_LIST format and integer name provider for the vertices.

CSVExporter

public CSVExporter(CSVFormat format)

Creates a new CSVExporter with integer id providers for the vertices.

Parameters:

format - the format to use

CSVExporter

public CSVExporter(CSVFormat format,
 char delimiter)

Creates a new CSVExporter with integer id providers for the vertices.

Parameters:

format - the format to use

delimiter - delimiter to use

CSVExporter

public CSVExporter(Function<V,String> vertexIdProvider,
 CSVFormat format,
 char delimiter)

Constructs a new CSVExporter with the given ID providers and format.

Parameters:

vertexIdProvider - for generating vertex IDs. Must not be null.

format - the format to use

delimiter - delimiter to use

Method Details

exportGraph

public void exportGraph(Graph<V,E> g,
 Writer writer)

Exports a graph

Specified by:

exportGraph in interface GraphExporter<V,E>

Parameters:

g - the graph

writer - the writer

isParameter

public boolean isParameter(CSVFormat.Parameter p)

Return if a particular parameter of the exporter is enabled

Parameters:

p - the parameter

Returns:

true if the parameter is set, false otherwise

setParameter

public void setParameter(CSVFormat.Parameter p,
 boolean value)

Set the value of a parameter of the exporter

Parameters:

p - the parameter

value - the value to set

getFormat

public CSVFormat getFormat()

Get the format of the exporter

Returns:

the format of the exporter

setFormat

public void setFormat(CSVFormat format)

Set the format of the exporter

Parameters:

format - the format to use

getDelimiter

public char getDelimiter()

Get the delimiter (comma, semicolon, pipe, etc).

Returns:

the delimiter

setDelimiter

public void setDelimiter(char delimiter)

Set the delimiter (comma, semicolon, pipe, etc).

Parameters:

delimiter - the delimiter to use