org.sourceforge.jxutil.net.ddm.qddprmd
Class OBJECT

java.lang.Object
  |
  +--org.sourceforge.jxutil.net.ddm.qddprmd.DATA
        |
        +--org.sourceforge.jxutil.net.ddm.qddprmd.OBJECT

Direct Known Subclasses:

COLLECTION, SCALAR

public abstract class OBJECT

extends DATA

Object (OBJECT) is a data processing entity that structures and stores data and exhibits well- defined behaviors in response to specific commands. All objects the DDM architecture recognizes are instances of a CLASS object that DDM defines. A CLASS object defines the variables of its instances with its nsvar list. The DDM OBJECT class has four primary subclasses:

• SCALAR objects consist of zero or more instances of the FIELD subclasses of DDM. If more than one instance variable is defined, then they are mapped into the value of the object in the order which they are defined.
• SPACEs are special cases of SCALAR objects consisting of a single instance variable whose value is a space in which other objects can be encoded.
• COLLECTION objects consist of zero or more instances of the SCALAR and COLLECTION subclasses of DDM.
• MANAGER objects manage a collection of objects. The CLASS description of a collection's instance variable is independent of the collection stored in a space or encoded in a data stream for transmission between systems. See SPACE for a description of how collections are encoded in spaces. And see DSS (on page 301) for a description of how collections are encoded for transmission between systems. A CLASS object specifies the commands its instances respond to with its instance commands (nscmd) list. DDM does not provide a complete definition for the classes of objects defined or used within DDM. Commands are defined for the major data management functions which require architected interfaces, such as files and access methods. Commands are not defined for other classes, such as binary numbers or character strings, for internal interfaces between components, or for the object-oriented commands (messages or member functions) such as SELF.

  Field Summary

  static short

  CP

  Constructor Summary

  OBJECT()
  

  Methods inherited from class org.sourceforge.jxutil.net.ddm.qddprmd.DATA

  getCP, toString, write

  Methods inherited from class java.lang.Object

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

  Field Detail

  CP

  public static final short CP

  See Also:

  Constant Field Values

  Constructor Detail

  OBJECT

  public OBJECT()