Module: ActiveRecord::Jdbc::PLSql

Defined in:
lib/activerecord/jdbc/plsql.rb,
lib/activerecord/jdbc/plsql/version.rb

Constant Summary collapse

SQL_TYPES = 
{
    binary: java.sql.Types::BINARY,
    boolean: java.sql.Types::BOOLEAN,
    date: java.sql.Types::DATE,
    datetime: java.sql.Types::TIMESTAMP,
    decimal: java.sql.Types::DECIMAL,
    float: java.sql.Types::FLOAT,
    integer: java.sql.Types::INTEGER,
    string: java.sql.Types::VARCHAR,
    text: java.sql.Types::VARCHAR,
    time: java.sql.Types::TIME,
    timestamp: java.sql.Types::TIMESTAMP
}
VERSION = 
"0.0.3"

Instance Method Summary collapse

Instance Method Details

#call_procedure(name, *binds) ⇒ Object

Entry point to call procedure



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# File 'lib/activerecord/jdbc/plsql.rb', line 114

def call_procedure(name, *binds)
  parameters = parse_parameters(binds)

  request_string = create_request_string(name, parameters)
  statement = raw_connection.with_connection_retry_guard do |jdbc_connection|
    jdbc_connection.prepareCall(request_string)
  end

  output_parameters = parse_output_parameters(parameters)
  input_parameters = parse_input_parameters(parameters)

  register_parameters(statement, output_parameters, input_parameters)

  logger.info 'Call procedure: ' + request_string
  statement.execute

  get_results(statement, output_parameters)
end

#create_request_string(name, attributes) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 49

def create_request_string(name, attributes)
  "{CALL #{name}(#{Array.new(attributes.size, '?').join(', ')})}"
end

#get_result(statement, key, type) ⇒ Object

Choose the method to call with type



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# File 'lib/activerecord/jdbc/plsql.rb', line 84

def get_result(statement, key, type)
  case type
    when :binary
      statement.getString(key)
    when :boolean
      statement.getBoolean(key)
    when :date
      statement.getDate(key)
    when :datetime
      statement.getTimestamp(key)
    when :decimal
      statement.getDouble(key)
    when :float
      statement.getFloat(key)
    when :integer
      statement.getInt(key)
    when :string
      statement.getString(key)
    when :text
      statement.getString(key)
    when :time
      statement.getTime(key)
    when :timestamp
      statement.getTimestamp(key)
    else
      statement.getObject(key)
  end
end

#get_results(statement, output_parameters) ⇒ Object

Store results in hash



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# File 'lib/activerecord/jdbc/plsql.rb', line 74

def get_results(statement, output_parameters)
  results = Hash.new
  output_parameters.each do |k, v|
    key = k.is_a?(Symbol) ? k.to_s : k
    results[k] = get_result(statement, key, v)
  end
  results
end

#parse_input_parameters(parameters) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 29

def parse_input_parameters(parameters)
  input_parameters = Hash.new
  if parameters.is_a? Hash
    parameters.each { |k, v| input_parameters[k] = v unless SQL_TYPES.include? v}
  else
    parameters.each_with_index { |v, i| input_parameters[i + 1] = v unless SQL_TYPES.include? v }
  end
  input_parameters
end

#parse_output_parameters(parameters) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 39

def parse_output_parameters(parameters)
  output_parameters = Hash.new
  if parameters.is_a? Hash
    parameters.each { |k, v| output_parameters[k] = v if SQL_TYPES.include? v}
  else
    parameters.each_with_index { |v, i| output_parameters[i + 1] = v if SQL_TYPES.include? v }
  end
  output_parameters
end

#parse_parameters(parameters) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 21

def parse_parameters(parameters)
  if parameters.size == 1 and parameters[0].is_a? Hash
    parameters[0]
  else
    parameters
  end
end

#register_input_parameters(statement, input_parameters) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 53

def register_input_parameters(statement, input_parameters)
  input_parameters.each do |k, v|
    key = k.is_a?(Symbol) ? k.to_s : k
    statement.setObject(key, v)
  end
end

#register_output_parameters(statement, output_parameters) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 60

def register_output_parameters(statement, output_parameters)
  output_parameters.each do |k, v|
    key = k.is_a?(Symbol) ? k.to_s : k
    statement.registerOutParameter(key, SQL_TYPES[v])
  end
end

#register_parameters(statement, output_parameters, input_parameters) ⇒ Object 



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# File 'lib/activerecord/jdbc/plsql.rb', line 67

def register_parameters(statement, output_parameters, input_parameters)
  # Order is important for INOUT parameters
  register_output_parameters(statement, output_parameters)
  register_input_parameters(statement, input_parameters)
end