An implementation of GraphReaderWriter that reads/writes graphs from/to text files. Each line of the text file represents an object to be modelled by the graph.
When performing a read, the text file is read line by line. As each line is read it is tokenized based on the delimiter property, and passed to the template method readInternal(StringTokenizer), which must be implemented by a subclass. The method returns the object that is to be represented in the graph. The returned object is then passed to an underlying GraphGenerator which creates the necessary graph components to modell the object.
When performing a write, the graph is read component by component based on set properties. If the NODES property is set, nodes will be written. If the EDGES property is set, edges will be written as well. As each component is processed, it is passed to the repspective template methods writeNode(Writer,Node) and writeEdge(Writer,Edge). The methods then write out the text representation of the component.
Performs a read of the text file line by line.
Template method for returning the object represented by a line in the text file being read.
Performs a write on the graph out to a text file.
Template method for writing the text representation of an edge to an text file.
Template method for writing the text representation of a node to an text file.
Performs a read of the text file line by line. As each line is read the corresponding graph components represented by the line of text are created by an underlying GraphGenerator.
Performs a write on the graph out to a text file. If the NODES property is set, the nodes of the graph will be written, and if the EDGES property is set, the edges of the graph will be written.
out - The text file writer.
n - The node to write.
st - The tokenized line read from text file.
The object represented by the line of text.