cgif.parser

Class ReferentMap

Object

cgif.parser.ReferentMap

public class ReferentMap
extends Object

Provides the functionality needed to keep track of all referents so that relations can be tied to them.

Author:

Harry S. Delugach (delugach@uah.edu)

Field Summary

Fields

Modifier and Type	Field and Description
private HashMap<String,GraphObject>	objectmap Key is a variable name (e.g., x1) or string referent

Constructor Summary

Constructors

Constructor and Description
ReferentMap()

Method Summary

Modifier and Type	Method and Description
void	clear()
GraphObject	getObjectByReferent(String ref) Look up the graph object that corresponds to the referent given.
void	putObjectByReferent(String ref, GraphObject go) Insert the graph object into the list, using its referent as a key.

Methods inherited from class Object

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

Field Detail

objectmap

private HashMap<String,GraphObject> objectmap

Key is a variable name (e.g., x1) or string referent

Constructor Detail

ReferentMap

public ReferentMap()

Method Detail

getObjectByReferent

public GraphObject getObjectByReferent(String ref)

Look up the graph object that corresponds to the referent given. If more than one, returns the first one found. If the referent begins with "?" (meaning it is a backward reference), then the object that first defined the referent will be returned.

Parameters:

ref -

Returns:

the graph object with the given referent, null if none found.

putObjectByReferent

public void putObjectByReferent(String ref,
                                GraphObject go)
                         throws CGIFVariableException

Insert the graph object into the list, using its referent as a key.

Parameters:

ref -

go -

Throws:

CGIFVariableException - if the referent has already been associated with an object.

clear

public void clear()