Class: RDBI::Driver::PostgreSQL::Cursor

Inherits:
Cursor
  • Object
show all
Defined in:
lib/rdbi/driver/postgresql.rb

Instance Method Summary collapse

Constructor Details

#initialize(handle, schema) ⇒ Cursor

Returns a new instance of Cursor.



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# File 'lib/rdbi/driver/postgresql.rb', line 163

def initialize(handle, schema)
  super(handle)
  @index = 0
  @stub_datetime = DateTime.now.strftime( " %z" )
  @schema = schema
end

Instance Method Details

#[](index) ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 208

def [](index)
  fix_dates(@handle[index].values)
end

#affected_count ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 187

def affected_count
  @handle.cmd_tuples
end

#all ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 204

def all
  fix_dates(fetch_range(0, result_count-1))
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rdbi/driver/postgresql.rb', line 220

def empty?
  result_count == 0
end

#fetch(count = 1) ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 170

def fetch(count=1)
  return [] if last_row?
  a = []
  count.times { a.push(next_row) }
  return a
end

#finish ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 224

def finish
  @handle.clear
end

#first ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 191

def first
  fix_dates(@handle[0].values)
end

#last ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 195

def last
  fix_dates(@handle[-1].values)
end

#last_row? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rdbi/driver/postgresql.rb', line 212

def last_row?
  @index == result_count
end

#next_row ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 177

def next_row
  val = @handle[@index].values
  @index += 1
  fix_dates(val)
end

#rest ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 199

def rest
  oindex, @index = @index, result_count-1
  fix_dates(fetch_range(oindex, @index))
end

#result_count ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 183

def result_count
  @handle.num_tuples
end

#rewind ⇒ Object 



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# File 'lib/rdbi/driver/postgresql.rb', line 216

def rewind
  @index = 0
end