Project

General

Profile

« Previous | Next » 

Revision 5268

Added by Matt Jones almost 15 years ago

Fixed typos in metacat documentation.

View differences:

docs/dev/metacat/source/identifiers.txt
22 22 
  the syntax 'scope.object.revision', such as 'foo.34.1' (we will refer to
23 23 
  these as 'LocalIDs'). We now want Metacat to support identifiers that are
24 24 
  arbitrary strings, but still enforce uniqueness and proper revision
25 
  handling (referred to these as GUIDs).  Metacat must be able to accept
25 
  handling (refer to these as GUIDs).  Metacat must be able to accept
26 26 
  these strings as identifiers for all CRUD operations, and reference them
27 27 
  in search results.
28 28 

  		




  ......




  32
  32
  
    
and that LocalID has a constrained structure that includes semantics about


  		




  33
  33
  
    
revisions in the identifier, it is difficult to wholesale replace it with


  		




  34
  34
  
    
less-constrained string identifiers without re-writing much of Metacat.


  		




  35
  
  
    
Thus, our alternate strategy would is to wrap the Metacat APIs with a


  		




  
  35
  
    
Thus, our alternate strategy is to wrap the Metacat APIs with a


  		




  36
  36
  
    
identifier resolution layer that keeps track of the unconstrained GUIDs and


  		




  37
  37
  
    
maps them to constrained local identifiers which are used internally within


  		




  38
  38
  
    
Metacat. The basic identifer table model is shown in Figure 1, while the


  		




  39
  
  
    
basic strategy for retrieving an object is shown in Figure 2.


  		




  
  39
  
    
basic strategy for retrieving an object is shown in Figure 2, creating an 


  		




  
  40
  
    
object is shown in Figure 3, updating an object in Figure 4, and deleting


  		




  
  41
  
    
an object is shown in Figure 5.


  		




  40
  42
  
    

  		




  41
  43
  
    

  		




  42
  44
  
    
Identifier Table Structure


  		












Also available in:  Unified diff