Class | Sequel::IBMDB::Database |
In: |
lib/sequel/adapters/ibmdb.rb
|
Parent: | Sequel::Database |
conversion_procs | [R] | Hash of connection procs for converting |
REORG the related table whenever it is altered. This is not always required, but it is necessary for compatibilty with other Sequel code in many cases.
# File lib/sequel/adapters/ibmdb.rb, line 188 188: def alter_table(name, generator=nil) 189: res = super 190: reorg(name) 191: res 192: end
Create a new connection object for the given server.
# File lib/sequel/adapters/ibmdb.rb, line 195 195: def connect(server) 196: opts = server_opts(server) 197: 198: # use uncataloged connection so that host and port can be supported 199: connection_string = ( \ 200: 'Driver={IBM DB2 ODBC DRIVER};' \ 201: "Database=#{opts[:database]};" \ 202: "Hostname=#{opts[:host]};" \ 203: "Port=#{opts[:port] || 50000};" \ 204: 'Protocol=TCPIP;' \ 205: "Uid=#{opts[:user]};" \ 206: "Pwd=#{opts[:password]};" \ 207: ) 208: 209: Connection.new(connection_string) 210: end
Execute the given SQL on the database.
# File lib/sequel/adapters/ibmdb.rb, line 213 213: def execute(sql, opts=OPTS, &block) 214: if sql.is_a?(Symbol) 215: execute_prepared_statement(sql, opts, &block) 216: else 217: synchronize(opts[:server]){|c| _execute(c, sql, opts, &block)} 218: end 219: rescue Connection::Error => e 220: raise_error(e) 221: end
Execute the given SQL on the database, returning the last inserted identity value.
# File lib/sequel/adapters/ibmdb.rb, line 225 225: def execute_insert(sql, opts=OPTS) 226: synchronize(opts[:server]) do |c| 227: if sql.is_a?(Symbol) 228: execute_prepared_statement(sql, opts) 229: else 230: _execute(c, sql, opts) 231: end 232: _execute(c, "SELECT IDENTITY_VAL_LOCAL() FROM SYSIBM.SYSDUMMY1", opts){|stmt| i = stmt.fetch_array.first.to_i; i} 233: end 234: rescue Connection::Error => e 235: raise_error(e) 236: end
Execute a prepared statement named by name on the database.
# File lib/sequel/adapters/ibmdb.rb, line 239 239: def execute_prepared_statement(ps_name, opts) 240: args = opts[:arguments] 241: ps = prepared_statement(ps_name) 242: sql = ps.prepared_sql 243: synchronize(opts[:server]) do |conn| 244: unless conn.prepared_statements.fetch(ps_name, []).first == sql 245: log_yield("PREPARE #{ps_name}: #{sql}"){conn.prepare(sql, ps_name)} 246: end 247: args = args.map{|v| v.nil? ? nil : prepared_statement_arg(v)} 248: log_sql = "EXECUTE #{ps_name}" 249: if ps.log_sql 250: log_sql << " (" 251: log_sql << sql 252: log_sql << ")" 253: end 254: begin 255: stmt = log_yield(log_sql, args){conn.execute_prepared(ps_name, *args)} 256: if block_given? 257: yield(stmt) 258: else 259: stmt.affected 260: end 261: ensure 262: stmt.free_result if stmt 263: end 264: end 265: end
On DB2, a table might need to be REORGed if you are testing existence of it. This REORGs automatically if the database raises a specific error that indicates it should be REORGed.
# File lib/sequel/adapters/ibmdb.rb, line 270 270: def table_exists?(name) 271: v ||= false # only retry once 272: sch, table_name = schema_and_table(name) 273: name = SQL::QualifiedIdentifier.new(sch, table_name) if sch 274: from(name).first 275: true 276: rescue DatabaseError => e 277: if e.to_s =~ /Operation not allowed for reason code "7" on table/ && v == false 278: # table probably needs reorg 279: reorg(name) 280: v = true 281: retry 282: end 283: false 284: end