Class: Blazer::Adapters::MongodbAdapter

Inherits:
BaseAdapter show all
Defined in:
lib/blazer/adapters/mongodb_adapter.rb

Instance Attribute Summary

Attributes inherited from BaseAdapter

#data_source

Instance Method Summary collapse

Methods inherited from BaseAdapter

#cachable?, #cancel, #cost, #explain, #initialize, #reconnect, #schema

Constructor Details

This class inherits a constructor from Blazer::Adapters::BaseAdapter

Instance Method Details

#preview_statement ⇒ Object 



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# File 'lib/blazer/adapters/mongodb_adapter.rb', line 24

def preview_statement
  "db.{table}.find().limit(10)"
end

#run_statement(statement, comment) ⇒ Object 



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# File 'lib/blazer/adapters/mongodb_adapter.rb', line 4

def run_statement(statement, comment)
  columns = []
  rows = []
  error = nil

  begin
    documents = db.command({:$eval => "#{statement.strip}.toArray()"}).documents.first["retval"]
    columns = documents.flat_map { |r| r.keys }.uniq
    rows = documents.map { |r| columns.map { |c| r[c] } }
  rescue => e
    error = e.message
  end

  [columns, rows, error]
end

#tables ⇒ Object 



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# File 'lib/blazer/adapters/mongodb_adapter.rb', line 20

def tables
  db.collection_names
end