Class: Sequel::JDBC::Database

Inherits:
Database show all
Defined in:
lib/sequel/adapters/jdbc.rb,
lib/sequel/adapters/jdbc/mssql.rb

Overview

JDBC Databases offer a fairly uniform interface that does not change much based on the sub adapter.

Constant Summary

Constants inherited from Database

Database::ADAPTERS, Database::AUTOINCREMENT, Database::CASCADE, Database::COLUMN_DEFINITION_ORDER, Database::COMMA_SEPARATOR, Database::MSSQL_DEFAULT_RE, Database::MYSQL_TIMESTAMP_RE, Database::NOT_NULL, Database::NO_ACTION, Database::NULL, Database::POSTGRES_DEFAULT_RE, Database::PRIMARY_KEY, Database::RESTRICT, Database::SET_DEFAULT, Database::SET_NULL, Database::SQL_BEGIN, Database::SQL_COMMIT, Database::SQL_RELEASE_SAVEPOINT, Database::SQL_ROLLBACK, Database::SQL_ROLLBACK_TO_SAVEPOINT, Database::SQL_SAVEPOINT, Database::STRING_DEFAULT_RE, Database::TEMPORARY, Database::TRANSACTION_BEGIN, Database::TRANSACTION_COMMIT, Database::TRANSACTION_ISOLATION_LEVELS, Database::TRANSACTION_ROLLBACK, Database::UNDERSCORE, Database::UNIQUE, Database::UNSIGNED

Instance Attribute Summary collapse

Attributes inherited from Database

#default_schema, #log_warn_duration, #loggers, #opts, #pool, #prepared_statements, #sql_log_level, #transaction_isolation_level

Instance Method Summary collapse

Methods inherited from Database

#<<, #[], adapter_class, #adapter_scheme, adapter_scheme, #add_column, #add_index, #add_servers, #alter_table, #call, #cast_type_literal, connect, #create_or_replace_view, #create_table, #create_table!, #create_table?, #create_view, #disconnect, #drop_column, #drop_index, #drop_table, #drop_view, #dump_indexes_migration, #dump_schema_migration, #dump_table_schema, #each_server, #fetch, #from, #get, identifier_input_method, #identifier_input_method, identifier_input_method=, #identifier_input_method=, #identifier_output_method, identifier_output_method, identifier_output_method=, #identifier_output_method=, #inspect, #literal, #log_info, #log_yield, #logger=, #query, quote_identifiers=, #quote_identifiers=, #quote_identifiers?, #remove_servers, #rename_column, #rename_table, #run, #schema, #select, #serial_primary_key_options, #servers, #set_column_default, #set_column_type, single_threaded=, #single_threaded?, #supports_create_table_if_not_exists?, #supports_prepared_transactions?, #supports_savepoints?, #supports_transaction_isolation_levels?, #synchronize, #table_exists?, #test_connection, #transaction, #typecast_value, #url

Methods included from Metaprogramming

#meta_def

Constructor Details

#initialize(opts) ⇒ Database

Call the DATABASE_SETUP proc directly after initialization, so the object always uses sub adapter specific code. Also, raise an error immediately if the connection doesn’t have a uri, since JDBC requires one.

Raises:



116
117
118
119
120
121
122
123
124
125
126
 
# File 'lib/sequel/adapters/jdbc.rb', line 116

def initialize(opts)
  super
  @convert_types = typecast_value_boolean(@opts.fetch(:convert_types, true))
  raise(Error, "No connection string specified") unless uri
  
  resolved_uri = jndi? ? get_uri_from_jndi : uri

  if match = /\Ajdbc:([^:]+)/.match(resolved_uri) and prok = DATABASE_SETUP[match[1].to_sym]
    @driver = prok.call(self)
  end        
end

Instance Attribute Details

#convert_types ⇒ Object

Whether to convert some Java types to ruby types when retrieving rows. True by default, can be set to false to roughly double performance when fetching rows.



110
111
112
 
# File 'lib/sequel/adapters/jdbc.rb', line 110

def convert_types
  @convert_types
end

#database_type ⇒ Object (readonly)

The type of database we are connecting to



102
103
104
 
# File 'lib/sequel/adapters/jdbc.rb', line 102

def database_type
  @database_type
end

#driver ⇒ Object (readonly)

The Java database driver we are using



105
106
107
 
# File 'lib/sequel/adapters/jdbc.rb', line 105

def driver
  @driver
end

Instance Method Details

#call_sproc(name, opts = {}) ⇒ Object

Execute the given stored procedure with the give name. If a block is given, the stored procedure should return rows.



130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
 
# File 'lib/sequel/adapters/jdbc.rb', line 130

def call_sproc(name, opts = {})
  args = opts[:args] || []
  sql = "{call #{name}(#{args.map{'?'}.join(',')})}"
  synchronize(opts[:server]) do |conn|
    cps = conn.prepareCall(sql)

    i = 0
    args.each{|arg| set_ps_arg(cps, arg, i+=1)}

    begin
      if block_given?
        yield log_yield(sql){cps.executeQuery}
      else
        case opts[:type]
        when :insert
          log_yield(sql){cps.executeUpdate}
          last_insert_id(conn, opts)
        else
          log_yield(sql){cps.executeUpdate}
        end
      end
    rescue NativeException, JavaSQL::SQLException => e
      raise_error(e)
    ensure
      cps.close
    end
  end
end

#connect(server) ⇒ Object

Connect to the database using JavaSQL::DriverManager.getConnection.



160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
 
# File 'lib/sequel/adapters/jdbc.rb', line 160

def connect(server)
  opts = server_opts(server)
  conn = if jndi?
    get_connection_from_jndi
  else
    args = [uri(opts)]
    args.concat([opts[:user], opts[:password]]) if opts[:user] && opts[:password]
    begin
      JavaSQL::DriverManager.getConnection(*args)
    rescue => e
      raise e unless driver
      # If the DriverManager can't get the connection - use the connect
      # method of the driver. (This happens under Tomcat for instance)
      props = java.util.Properties.new
      if opts && opts[:user] && opts[:password]
        props.setProperty("user", opts[:user])
        props.setProperty("password", opts[:password])
      end
      opts[:jdbc_properties].each{|k,v| props.setProperty(k.to_s, v)} if opts[:jdbc_properties]
      begin
        driver.new.connect(args[0], props)
      rescue => e2
        e.message << "\n#{e2.class.name}: #{e2.message}"
        raise e
      end
    end
  end
  setup_connection(conn)
end

#dataset(opts = nil) ⇒ Object

Return instances of JDBC::Dataset with the given opts.



191
192
193
 
# File 'lib/sequel/adapters/jdbc.rb', line 191

def dataset(opts = nil)
  JDBC::Dataset.new(self, opts)
end

#execute(sql, opts = {}, &block) ⇒ Object Also known as: execute_dui

Execute the given SQL. If a block is given, if should be a SELECT statement or something else that returns rows.



197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
 
# File 'lib/sequel/adapters/jdbc.rb', line 197

def execute(sql, opts={}, &block)
  return call_sproc(sql, opts, &block) if opts[:sproc]
  return execute_prepared_statement(sql, opts, &block) if [Symbol, Dataset].any?{|c| sql.is_a?(c)}
  synchronize(opts[:server]) do |conn|
    statement(conn) do |stmt|
      if block
        yield log_yield(sql){stmt.executeQuery(sql)}
      else
        case opts[:type]
        when :ddl
          log_yield(sql){stmt.execute(sql)}
        when :insert
          log_yield(sql) do
            if requires_return_generated_keys?
              stmt.executeUpdate(sql, JavaSQL::Statement.RETURN_GENERATED_KEYS)
            else
              stmt.executeUpdate(sql)
            end
          end
          last_insert_id(conn, opts.merge(:stmt=>stmt))
        else
          log_yield(sql){stmt.executeUpdate(sql)}
        end
      end
    end
  end
end

#execute_ddl(sql, opts = {}) ⇒ Object

Execute the given DDL SQL, which should not return any values or rows.



228
229
230
 
# File 'lib/sequel/adapters/jdbc.rb', line 228

def execute_ddl(sql, opts={})
  execute(sql, {:type=>:ddl}.merge(opts))
end

#execute_insert(sql, opts = {}) ⇒ Object

Execute the given INSERT SQL, returning the last inserted row id.



234
235
236
 
# File 'lib/sequel/adapters/jdbc.rb', line 234

def execute_insert(sql, opts={})
  execute(sql, {:type=>:insert}.merge(opts))
end

#indexes(table, opts = {}) ⇒ Object

Use the JDBC metadata to get the index information for the table.



239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
 
# File 'lib/sequel/adapters/jdbc.rb', line 239

def indexes(table, opts={})
  m = output_identifier_meth
  im = input_identifier_meth
  schema, table = schema_and_table(table)
  schema ||= opts[:schema]
  schema = im.call(schema) if schema
  table = im.call(table)
  indexes = {}
  metadata(:getIndexInfo, nil, schema, table, false, true) do |r|
    next unless name = r[:column_name]
    next if respond_to?(:primary_key_index_re, true) and r[:index_name] =~ primary_key_index_re 
    i = indexes[m.call(r[:index_name])] ||= {:columns=>[], :unique=>[false, 0].include?(r[:non_unique])}
    i[:columns] << m.call(name)
  end
  indexes
end

#jndi? ⇒ Boolean

Whether or not JNDI is being used for this connection.

Returns:

  • (Boolean) 


257
258
259
 
# File 'lib/sequel/adapters/jdbc.rb', line 257

def jndi?
  !!(uri =~ JNDI_URI_REGEXP)
end

#tables(opts = {}) ⇒ Object

All tables in this database



262
263
264
 
# File 'lib/sequel/adapters/jdbc.rb', line 262

def tables(opts={})
  get_tables('TABLE', opts)
end

#uri(opts = {}) ⇒ Object

The uri for this connection. You can specify the uri using the :uri, :url, or :database options. You don’t need to worry about this if you use Sequel.connect with the JDBC connectrion strings.



270
271
272
273
274
 
# File 'lib/sequel/adapters/jdbc.rb', line 270

def uri(opts={})
  opts = @opts.merge(opts)
  ur = opts[:uri] || opts[:url] || opts[:database]
  ur =~ /^\Ajdbc:/ ? ur : "jdbc:#{ur}"
end

#views(opts = {}) ⇒ Object

All views in this database



277
278
279
 
# File 'lib/sequel/adapters/jdbc.rb', line 277

def views(opts={})
  get_tables('VIEW', opts)
end