Class: Browser::Database::SQL::Transaction

Inherits:
Object
  • Object
show all
Includes:
Native
Defined in:
opal/browser/database/sql.rb

Overview

Allows you to make changes to the database or read data from it.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#database ⇒ Database (readonly)

Returns the database the transaction has been created from.

Returns:

  • (Database) —

    the database the transaction has been created from



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# File 'opal/browser/database/sql.rb', line 93

def database
  @database
end

Instance Method Details

#query(query, *parameters) ⇒ Promise

Query the database.

Parameters:

  • query (String) —

    the SQL query to send

  • parameters (Array) —

    optional bind parameters for the query

Returns:



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# File 'opal/browser/database/sql.rb', line 108

def query(query, *parameters)
  promise = Promise.new

  `#@native.executeSql(#{query}, #{parameters},
    #{-> _, r { promise.resolve(Result.new(self, r)) }},
    #{-> _, e { promise.reject(Error.new(e)) }})`

  promise
end