Class: Nitron::Data::Relation

Inherits:
NSFetchRequest
  • Object
show all
Defined in:
lib/nitron/data/relation.rb

Instance Method Summary collapse

Instance Method Details

#all ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 12

def all
  self
end

#first ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 16

def first
  setFetchLimit(1)

  to_a[0]
end

#initWithClass(entityClass) ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 4

def initWithClass(entityClass)
  if init
    setEntity(entityClass.entityDescription)
  end

  self
end

#inspect ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 22

def inspect
  to_a
end

#order(column, opts = {}) ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 26

def order(column, opts={})
  descriptors = sortDescriptors || []

  descriptors << NSSortDescriptor.alloc.initWithKey(column.to_s, ascending:opts.fetch(:ascending, true))
  setSortDescriptors(descriptors)

  self
end

#to_a ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 35

def to_a
  error = Pointer.new(:object)
  context.executeFetchRequest(self, error:error)
end

#where(format, *args) ⇒ Object 



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# File 'lib/nitron/data/relation.rb', line 40

def where(format, *args)
  predicate = NSPredicate.predicateWithFormat(format.gsub("?", "%@"), argumentArray:args)

  if self.predicate
    self.predicate = NSCompoundPredicate.andPredicateWithSubpredicates([predicate])
  else
    self.predicate = predicate
  end

  self
end