JSONExporter (JGraphT : a free Java graph library)

java.lang.Object
- org.jgrapht.nio.BaseExporter<V,E>
- - org.jgrapht.nio.json.JSONExporter<V,E>

Type Parameters:

V - the graph vertex type

E - the graph edge type

All Implemented Interfaces:

GraphExporter<V,E>
```
public class JSONExporter<V,E>
extends BaseExporter<V,E>
implements GraphExporter<V,E>
```
Exports a graph using JSON.
The output is one object which contains:
- A member named nodes whose value is an array of nodes.
- A member named edges whose value is an array of edges.
- Two members named creator and version for metadata.
Each node contains an identifier and possibly other attributes. Similarly each edge contains the source and target vertices, a possible identifier and possible other attributes. All these can be adjusted using the setters. The default constructor constructs integer identifiers using an IntegerIdProvider for both vertices and edges and does not output any custom attributes.
Author:

Dimitrios Michail

Field Summary
- Fields inherited from class org.jgrapht.nio.BaseExporter
  edgeAttributeProvider, edgeIdProvider, graphAttributeProvider, graphIdProvider, vertexAttributeProvider, vertexIdProvider

Constructor Summary

Constructors
Constructor	Description
`JSONExporter()`	Creates a new exporter with integers for the vertex identifiers.
`JSONExporter(Function<V,String> vertexIdProvider)`	Creates a new exporter.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

void exportGraph(Graph<V,E> g, Writer writer)
Export a graph using the given Writer.
- 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 Detail
  - JSONExporter
```
public JSONExporter()
```
    Creates a new exporter with integers for the vertex identifiers.
  - JSONExporter
```
public JSONExporter(Function<V,String> vertexIdProvider)
```
    Creates a new exporter.
    
    Parameters:
    
    vertexIdProvider - for generating vertex identifiers. Must not be null.
- Method Detail
  - exportGraph
```
public void exportGraph(Graph<V,E> g,
                        Writer writer)
```
    Description copied from interface: GraphExporter
    
    Export a graph using the given Writer.
    It is the callers responsibility to ensure the Writer is closed after this method returned.
    
    Specified by:
    
    exportGraph in interface GraphExporter<V,E>
    
    Parameters:
    
    g - the graph to export
    
    writer - the output writer