ccs.cdb
Class MKCDBObject

java.lang.Object
  ccs.beetree.BeeObject
      ccs.cdb.CDBObject
          ccs.cdb.MKCDBObject

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

CDBFileMeta

public abstract class MKCDBObject
extends CDBObject

Multipart-Key CDBObject. The key is composite and contains several fields in a well-defined order. This class parses and assembles the key. Note: all subclasses must be public, and all the key elements must be public, otherwise it won't work.

See Also:

Serialized Form

Field Summary

protected java.lang.String[]

keyfieldnames Subclass constructors must define this array, which references those fields that form the key.

Fields inherited from class ccs.cdb.CDBObject

clone, key, marshalVersion, owner

Fields inherited from class ccs.beetree.BeeObject

cipher, encodedLength, isBodiless, isForceDirectDecrypt, isZip, slack

Constructor Summary

MKCDBObject()

Method Summary

protected java.lang.String	cpgetKey() generates the key from the key fields.
protected void	cpsetKey(java.lang.String key) parses the key fields from the composite key.

Methods inherited from class ccs.cdb.CDBObject

canChangeKeyProgrammatically, canDeleteProgrammatically, canUpdateProgrammatically, cpgetMarshalledLength, cpmarshal, cppreMarshal, cppreUnmarshal, cpunmarshal, getCDB, getKey, getMarshalledLength, marshal, preMarshal, preUnmarshal, setCDB, setKey, transientMarshal, transientUnmarshal, unmarshal

Methods inherited from class ccs.beetree.BeeObject

lock, unlock

Methods inherited from class java.lang.Object

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

Field Detail

keyfieldnames

protected java.lang.String[] keyfieldnames

Subclass constructors must define this array, which references those fields that form the key. NB. key fields must not contain the zero character '\0' since this is used as a field separator. (Trick: if you want exact matches on the fields you specify but accept whatever's in the DB for those you leave blank, explicitly add a "\0" to the last specified field (only) and then findFirst / nextMatch as normal. Without this "slug", you may get returns where the last specified field is longer than you specified.)

Constructor Detail

MKCDBObject

public MKCDBObject()

Method Detail

cpgetKey

protected final java.lang.String cpgetKey()

generates the key from the key fields. The composition stops if a field is blank (zero length); this allows partial-key matching.

Overrides:

cpgetKey in class CDBObject

Returns:

the composite key.

cpsetKey

protected final void cpsetKey(java.lang.String key)

parses the key fields from the composite key.

Overrides:

cpsetKey in class CDBObject

Parameters:

key - The composite key.