Class: OMF::Rete::Store::PredicateStore

Inherits:
Object
  • Object
show all
Includes:
OMF::Rete::Store
Defined in:
lib/omf_rete/store/predicate_store.rb

Overview

This store supports ‘predicate’ tuples. The predicate of a tuple is identified by it’s first element and each predicate can have a different scheme (tuple length). Each predicate needs to be registered through ‘registerPredicate’.

Subscriptions and ‘find’ queries need to name the predicate. In other words, they CANNOT span multiple predicates.

Constant Summary

Constants included from OMF::Rete::Store

DEF_TYPE

Instance Method Summary collapse

Methods included from OMF::Rete::Store

#add, create, #createTSet, #on_query, #query, #remove, #subscribe, #unsubscribe

Constructor Details

#initialize(opts = {}) ⇒ PredicateStore

Returns a new instance of PredicateStore.



32
33
34
35
 
# File 'lib/omf_rete/store/predicate_store.rb', line 32

def initialize(opts = {})
  store_initialize()
  @stores = {}
end

Instance Method Details

#addTuple(tarray) ⇒ Object 



65
66
67
 
# File 'lib/omf_rete/store/predicate_store.rb', line 65

def addTuple(tarray)
  get_store(tarray).addTuple(tarray)
end

#confirmLength(tuple) ⇒ Object 



81
82
83
 
# File 'lib/omf_rete/store/predicate_store.rb', line 81

def confirmLength(tuple)
  tuple.is_a?(Array) && get_store(tuple).confirmLength(tuple)
end

#find(pattern) ⇒ Object 



73
74
75
 
# File 'lib/omf_rete/store/predicate_store.rb', line 73

def find(pattern)
  get_store(pattern).find(pattern)
end

#registerPredicate(pred_name, length, opts = {}) ⇒ Object

Register a new predicate ‘pred_name’ whose tuples are of ‘length’.



39
40
41
42
43
44
45
 
# File 'lib/omf_rete/store/predicate_store.rb', line 39

def registerPredicate(pred_name, length, opts = {})
  pred_name = pred_name.to_sym
  if @stores.key? pred_name
    raise AlreadyRegisteredPredicateException.new(pred_name)
  end
  @stores[pred_name] = NamedAlphaStore.new(pred_name, length, opts)
end

#registerPredicateStore(pred_name, store) ⇒ Object

Register a ‘store’ for predicate ‘pred_name’.



49
50
51
52
53
54
55
 
# File 'lib/omf_rete/store/predicate_store.rb', line 49

def registerPredicateStore(pred_name, store)
  pred_name = pred_name.to_sym
  if @stores.key? pred_name
    raise AlreadyRegisteredPredicateException.new(pred_name)
  end
  @stores[pred_name] = store
end

#registerTSet(tset, pattern) ⇒ Object

Store API ###



59
60
61
62
63
 
# File 'lib/omf_rete/store/predicate_store.rb', line 59

def registerTSet(tset, pattern)
  tset = get_store(pattern).registerTSet(tset, pattern)
  #puts ">>> Register tset - #{pattern} - #{tset}"
  tset
end

#removeTuple(tarray) ⇒ Object 



69
70
71
 
# File 'lib/omf_rete/store/predicate_store.rb', line 69

def removeTuple(tarray)
  get_store(tarray).removeTuple(tarray)
end

#to_s ⇒ Object 



77
78
79
 
# File 'lib/omf_rete/store/predicate_store.rb', line 77

def to_s()
  "Predicate Store"
end