prolog.implementation
Class StatementMap

java.lang.Object
  |
  +--prolog.implementation.StatementMap

All Implemented Interfaces:

IStatementMap

public class StatementMap

extends java.lang.Object

implements IStatementMap

The statementmap stores statements under their name. It is a collection with statements but for faster access from the interpreter, they are stored in a map to prevent iterations.

Field Summary

protected java.util.List	listeners list of registered listeners
protected java.util.Map	statements storing the statements

Constructor Summary

StatementMap()
create a satementmap

Method Summary

void	addListener(IStatementMapListener l) registers a listener
void	addStatement(IStatement statement) adds a statement to the statementmap
void	clear() clears the statement map
protected void	fireChange() fire a content changed notify
void	genXml(java.io.Writer out, ISymbolTable table) generates a xml representation with decoded symbols
IStatement	getMatchingStatement(IFact fact) returns a statement matching the given fact, if one was found.
IStatement	getStatement(int key) returns the statement for the given name
java.util.Iterator	getStatements() returns a iterator over all stored statements
void	removeListener(IStatementMapListener l) removes a listener
java.lang.String	toString() returns a string representation
java.lang.String	toString(ISymbolTable table) returns a string representation with decoded symbols

Methods inherited from class java.lang.Object

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

Field Detail

listeners

protected java.util.List listeners

list of registered listeners

statements

protected java.util.Map statements

storing the statements

Constructor Detail

StatementMap

public StatementMap()

create a satementmap

Method Detail

clear

public void clear()

clears the statement map

Specified by:

clear in interface IStatementMap

addStatement

public void addStatement(IStatement statement)

adds a statement to the statementmap

Specified by:

addStatement in interface IStatementMap

getStatements

public java.util.Iterator getStatements()

returns a iterator over all stored statements

Specified by:

getStatements in interface IStatementMap

getStatement

public IStatement getStatement(int key)

returns the statement for the given name

Specified by:

getStatement in interface IStatementMap

Parameters:

key - is the name

Returns:

a statement if one was found ;-)

getMatchingStatement

public IStatement getMatchingStatement(IFact fact)

returns a statement matching the given fact, if one was found.

Specified by:

getMatchingStatement in interface IStatementMap

toString

public java.lang.String toString()

returns a string representation

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(ISymbolTable table)

returns a string representation with decoded symbols

Specified by:

toString in interface IStatementMap

Parameters:

table -

Returns:

genXml

public void genXml(java.io.Writer out,
                   ISymbolTable table)
            throws java.io.IOException

generates a xml representation with decoded symbols

Specified by:

genXml in interface IStatementMap

Parameters:

out -

table -

Throws:

java.io.IOException -

addListener

public void addListener(IStatementMapListener l)

registers a listener

removeListener

public void removeListener(IStatementMapListener l)

removes a listener

fireChange

protected void fireChange()

fire a content changed notify