Class: Factbase::Looged::Query

Inherits:
Object
  • Object
show all
Defined in:
lib/factbase/looged.rb

Overview

Query decorator.

This is an internal class, it is not supposed to be instantiated directly.

Instance Method Summary collapse

Constructor Details

#initialize(fb, expr, loog) ⇒ Query

Returns a new instance of Query.



114
115
116
117
118
 
# File 'lib/factbase/looged.rb', line 114

def initialize(fb, expr, loog)
  @fb = fb
  @expr = expr
  @loog = loog
end

Instance Method Details

#delete! ⇒ Object 



164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
 
# File 'lib/factbase/looged.rb', line 164

def delete!
  r = nil
  before = @fb.size
  tail = Factbase::Looged.elapsed do
    r = @fb.query(@expr).delete!
  end
  raise ".delete! of #{@query.class} returned #{r.class}" unless r.is_a?(Integer)
  if before.zero?
    @loog.debug("There were no facts, nothing deleted by '#{@expr}' #{tail}")
  elsif r.zero?
    @loog.debug("No facts out of #{before} deleted by '#{@expr}' #{tail}")
  else
    @loog.debug("Deleted #{r} fact(s) out of #{before} by '#{@expr}' #{tail}")
  end
  r
end

#each(params = {}) ⇒ Object 



134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
 
# File 'lib/factbase/looged.rb', line 134

def each(params = {}, &)
  q = Factbase::Syntax.new(@expr).to_term.to_s
  if block_given?
    r = nil
    tail = Factbase::Looged.elapsed do
      r = @fb.query(@expr).each(params, &)
    end
    raise ".each of #{@query.class} returned #{r.class}" unless r.is_a?(Integer)
    if r.zero?
      @loog.debug("Nothing found by '#{q}' #{tail}")
    else
      @loog.debug("Found #{r} fact(s) by '#{q}' #{tail}")
    end
    r
  else
    array = []
    tail = Factbase::Looged.elapsed do
      @fb.query(@expr).each(params) do |f|
        array << f
      end
    end
    if array.empty?
      @loog.debug("Nothing found by '#{q}' #{tail}")
    else
      @loog.debug("Found #{array.size} fact(s) by '#{q}' #{tail}")
    end
    array
  end
end

#one(params = {}) ⇒ Object 



120
121
122
123
124
125
126
127
128
129
130
131
132
 
# File 'lib/factbase/looged.rb', line 120

def one(params = {})
  q = Factbase::Syntax.new(@expr).to_term.to_s
  r = nil
  tail = Factbase::Looged.elapsed do
    r = @fb.query(@expr).one(params)
  end
  if r.nil?
    @loog.debug("Nothing found by '#{q}' #{tail}")
  else
    @loog.debug("Found #{r} (#{r.class}) by '#{q}' #{tail}")
  end
  r
end