Class: ActiveRecordData

Inherits:
BaseUri show all
Defined in:
lib/libisi/uri/activerecord.rb

Constant Summary collapse

ADAPTERS = 
["mysql","postgresql","sqlite3","sqlite"]
@@num = 
0

Instance Attribute Summary collapse

Attributes inherited from BaseUri

#options, #uri

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from BaseUri

#base_uri, #credential_hash, #execute_command, #find, #password, #user

Constructor Details

#initialize(uri, options) ⇒ ActiveRecordData

Returns a new instance of ActiveRecordData.



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# File 'lib/libisi/uri/activerecord.rb', line 57

def initialize(uri, options)
  require "rubygems"
  require "active_record"
  ActiveRecord::Base.logger = $log

  super
      
  @adapter = uri.scheme
  
  vals = ActiveRecordData.split_path(uri)
  @database = vals[:database]
  @table = vals[:table]
  raise "No database given" unless @database
  raise "No table given" unless @table    

  if options[:model]
    require "active_support/core_ext/string/inflections.rb"
    
    $log.info("Loading classes from #{options[:model]}")
    @model_path = Pathname.new(options[:model])
    @class_names = []

    raise "Model path #{@model_path} not found" unless @model_path.exist?
    
    use_activesupport = true
    if use_activesupport
	ActiveSupport::Dependencies.load_paths << @model_path.to_s
    end

    @model_path.find {|p|
	next unless p.to_s =~ /\/([^\/]+)\.rb$/
	
	class_name = $1.camelize
	@class_names << class_name
	
	unless use_activesupport
 $log.debug("Define autoload: #{class_name.to_sym} => #{p}")
 autoload(class_name.to_sym, p.to_s)	
	end
    }
  end
end

Instance Attribute Details

#adapter ⇒ Object (readonly)

Returns the value of attribute adapter.



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# File 'lib/libisi/uri/activerecord.rb', line 56

def adapter
  @adapter
end

#database ⇒ Object (readonly)

Returns the value of attribute database.



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# File 'lib/libisi/uri/activerecord.rb', line 56

def database
  @database
end

#table ⇒ Object (readonly)

Returns the value of attribute table.



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# File 'lib/libisi/uri/activerecord.rb', line 56

def table
  @table
end

Class Method Details

.split_path(uri) ⇒ Object 



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# File 'lib/libisi/uri/activerecord.rb', line 24

def ActiveRecordData.split_path(uri)
  return {} unless ADAPTERS.include?(uri.scheme)

  return {} if uri.path.length <= 1
  splited = uri.path[1..-1].split("/")
  case uri.scheme
  when "mysql","postgresql"
    ret = nil
    case splited.length
    when 1
	ret = {:database => splited[0]}
    when 2
	ret = {:database => splited[0], :table => splited[1]}
    else
    ret = {}
    end
  when "sqlite","sqlite3"
    while splited.length > 1 and (exist = Pathname.new(splited[0]).exist?) and Pathname.new(splited[0]).directory?
	$log.debug("#{splited[0]} exist and is a directory")
	splited = [splited[0..1].join("/")] + splited[2..-1]
    end
   
    ret = {:database => splited[0], :table => splited[1]}
  end
  $log.debug("ActiveRecordData split_path: #{uri.inspect} => #{ret.inspect}")
  ret
end

.supports?(uri) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/libisi/uri/activerecord.rb', line 52

def ActiveRecordData.supports?(uri)
  !split_path(uri)[:table].nil?
end

Instance Method Details

#column_names ⇒ Object 



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# File 'lib/libisi/uri/activerecord.rb', line 102

def column_names; active_record_class.column_names; end

#create(attributes, &block) ⇒ Object 



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# File 'lib/libisi/uri/activerecord.rb', line 106

def create(attributes,&block); active_record.create(attributes,&block) ;end

#entry_not_found_exception ⇒ Object 



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# File 'lib/libisi/uri/activerecord.rb', line 105

def entry_not_found_exception; ActiveRecord::RecordNotFound; end

#items ⇒ Object 



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# File 'lib/libisi/uri/activerecord.rb', line 104

def items; active_record_class.find(:all).to_a; end

#primary_key ⇒ Object 



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# File 'lib/libisi/uri/activerecord.rb', line 100

def primary_key; active_record_class.primary_key.to_s ;end