Class: DB::Postgres::Native::Result

Inherits:
FFI::Pointer
  • Object
show all
Defined in:
lib/db/postgres/native/result.rb

Instance Method Summary collapse

Constructor Details

#initialize(connection, types = {}, address) ⇒ Result

Returns a new instance of Result.



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# File 'lib/db/postgres/native/result.rb', line 57

def initialize(connection, types = {}, address)
  super(address)
  
  @connection = connection
  @fields = nil
  @types = types
  @casts = nil
end

Instance Method Details

#cast!(row) ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 82

def cast!(row)
  @casts ||= self.field_types
  
  row.size.times do |index|
    if cast = @casts[index]
      row[index] = cast.parse(row[index])
    end
  end
  
  return row
end

#each ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 94

def each
  row_count.times do |i|
    yield cast!(get_row(i))
  end
  
  Native.clear(self)
end

#field_count ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 66

def field_count
  Native.field_count(self)
end

#field_names ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 74

def field_names
  field_count.times.collect{|i| Native.field_name(self, i)}
end

#field_types ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 70

def field_types
  field_count.times.collect{|i| @types[Native.field_type(self, i)]}
end

#map(&block) ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 102

def map(&block)
  results = []
  
  self.each do |row|
    results << yield(row)
  end
  
  return results
end

#row_count ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 78

def row_count
  Native.row_count(self)
end

#to_a ⇒ Object 



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# File 'lib/db/postgres/native/result.rb', line 112

def to_a
  rows = []
  
  self.each do |row|
    rows << row
  end
  
  return rows
end