Package org.geotools.graph.io.standard

Class SerializedReaderWriter

Object

AbstractReaderWriter

SerializedReaderWriter

All Implemented Interfaces:

GraphReaderWriter, FileReaderWriter

public class SerializedReaderWriter
extends AbstractReaderWriter
implements FileReaderWriter

An implementation of GraphReaderWriter that uses java serialization to read and write graph objects. During the graph serialization process edges are written to the object output stream. Along with the edges, the two nodes incident to the edge are also written. However, edge adjacency lists of nodes are not written to the output stream in order to prevent deep recursive calls that often result in a stack overflow. Therefore it is important that any implementation of the Node interface declare its edge adjacecny list (if any) as transient in order to support graph serializability.
Because edge adjacency lists are not serialized, they must be reconstructed upon deserialization in order to preserve the original graph structure.

Author:

Justin Deoliveira, Refractions Research Inc, jdeolive@refractions.net

Field Summary

Fields inherited from class AbstractReaderWriter

BUILDER, EDGES, GENERATOR, NODES

Fields inherited from interface FileReaderWriter

FILENAME

Constructor Summary

Constructors

Constructor	Description
SerializedReaderWriter()

Method Summary

Modifier and Type	Method	Description
Graph	read()	Deserializes the graph and reconstructs the original structure.
void	write(Graph graph)	Serializes the graph by writing each edge in the graph to an object output stream.

Methods inherited from class AbstractReaderWriter

getProperty, setProperty, setProperty

Methods inherited from class Object

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

Methods inherited from interface GraphReaderWriter

getProperty, setProperty

Constructor Details

SerializedReaderWriter

public SerializedReaderWriter()

Method Details

read

public Graph read()
           throws Exception

Deserializes the graph and reconstructs the original structure.

Specified by:

read in interface GraphReaderWriter

Returns:

The represented graph.

Throws:

Exception

See Also:

• GraphReaderWriter.read()

write

public void write(Graph graph)
           throws Exception

Serializes the graph by writing each edge in the graph to an object output stream. If there any nodes of degree 0 in the graph, then they are appended to the end of the object output stream.

Specified by:

write in interface GraphReaderWriter

Parameters:

graph - The graph to be

Throws:

Exception

See Also:

• GraphReaderWriter#write()