design.txt

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The list of indexed fields
--------------------------

dn=@INDEXLIST
	list of field names that are indexed

	contains fields of type @IDXATTR which contain attriute names
	of indexed fields


Data records
------------

for each user record in the db there is:
    main record
	 key: DN=dn
	 data: packed attribute/value list

    a index record for each indexed field in the record


Index Records
-------------

The index records contain the list of dn's that contain records
matching the index key

All index records are of the form:
      dn=@INDEX:field:value

and contain fields of type @IDX which are the dns of the records
that have that value for some attribute


Search Expressions
------------------

Very similar to LDAP search expressions, but does not allow ~=, <= or >=

	attrib0 := (field=value)
	attrib := attrib0 | (attrib&&attrib) | (attrib||attrib) | !attrib