public JSDummyRowObject( ExprManager exprManager, Scriptable scope )
public JSDummyRowObject( ExprManager exprManager, Scriptable scope, Scriptable parent )
	public JSDummyRowObject( ExprManager exprManager, Scriptable scope )	{		this.exprManager = exprManager;		this.scope = scope;				this.valueCacheMap = new HashMap( );	}