Class: VORuby::ActiveVOTable::Callbacks

Inherits:
Object
  • Object
show all
Includes:
XML::SaxParser::Callbacks
Defined in:
lib/voruby/active_votable/active_votable.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base_class) ⇒ Callbacks

Returns a new instance of Callbacks.



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# File 'lib/voruby/active_votable/active_votable.rb', line 19

def initialize(base_class)
  self.base_class = base_class
  
  self.row = []
  self.metadata = []
  
  self.meta_location = OpenStruct.new(:resource => 0, :table => 0, :field => 0)
  self.data_location = OpenStruct.new(:resource => 0, :table => 0, :row => 0, :column => 0)
  self.inside_td = false
  self.in_error = false
end

Instance Attribute Details

#base_class ⇒ Object

Returns the value of attribute base_class.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def base_class
  @base_class
end

#data_location ⇒ Object

Returns the value of attribute data_location.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def data_location
  @data_location
end

#data_tables ⇒ Object

Returns the value of attribute data_tables.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def data_tables
  @data_tables
end

#fields_tables ⇒ Object

Returns the value of attribute fields_tables.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def fields_tables
  @fields_tables
end

#in_error ⇒ Object

Returns the value of attribute in_error.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def in_error
  @in_error
end

#inside_td ⇒ Object

Returns the value of attribute inside_td.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def inside_td
  @inside_td
end

#meta_location ⇒ Object

Returns the value of attribute meta_location.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def meta_location
  @meta_location
end

#metadata ⇒ Object

Returns the value of attribute metadata.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def metadata
  @metadata
end

#row ⇒ Object

Returns the value of attribute row.



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# File 'lib/voruby/active_votable/active_votable.rb', line 15

def row
  @row
end

Instance Method Details

#data_table_name ⇒ Object 



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# File 'lib/voruby/active_votable/active_votable.rb', line 89

def data_table_name
  "#{self.base_class.table_name}_#{Base::DATA_ID}_#{self.data_location.resource}_#{self.data_location.table}"
end

#fields_table_name ⇒ Object 



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# File 'lib/voruby/active_votable/active_votable.rb', line 93

def fields_table_name
  "#{self.base_class.table_name}_#{Base::SCHEMA_ID}_#{self.meta_location.resource}_#{self.meta_location.table}"
end

#on_characters(chars) ⇒ Object 



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# File 'lib/voruby/active_votable/active_votable.rb', line 84

def on_characters(chars)
  raise "Query status error: #{chars}" if self.in_error
  self.row << chars if self.inside_td
end

#on_end_element(name) ⇒ Object 



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# File 'lib/voruby/active_votable/active_votable.rb', line 69

def on_end_element(name)
  case name
  when 'TABLE'
    self.metadata.clear
  when 'TABLEDATA'
    self.base_class.connection.commit_db_transaction()
  when 'TR'
    create_record()
  when 'TD'
    self.inside_td = false
  when 'INFO'
    self.in_error = false
  end
end

#on_start_element(name, attrs) ⇒ Object 



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# File 'lib/voruby/active_votable/active_votable.rb', line 31

def on_start_element(name, attrs)
  case name
  when 'RESOURCE'
    self.meta_location.resource += 1
    self.data_location.resource += 1
    self.meta_location.table = 0
    self.data_location.table = 0
  when 'TABLE'
    self.meta_location.table += 1
    self.meta_location.field = 0

    self.data_location.table += 1
    self.data_location.row = 0
    self.data_location.column = 0
    
    create_db_tables()
  when 'FIELD'
    self.meta_location.field += 1
    self.metadata << attrs
  when 'DATA'
    create_data_schema() # create the table and make it available
    create_metadata_table()
  when 'TABLEDATA'
    self.base_class.connection.begin_db_transaction()
  when 'TR'
    self.data_location.resource = self.meta_location.resource
    self.data_location.table = self.meta_location.table
    self.data_location.row += 1
    self.data_location.column = 0
    self.row.clear
  when 'TD'
    self.data_location.column += 1
    self.inside_td = true
  when 'INFO'
    self.in_error = true if attrs['name'] == 'QUERY_STATUS' and attrs['value'] == 'ERROR'
  end
end