code: CallableStatement getCallableStatement(final SqlContext sqlContext) throws SQLException {
  		Connection conn = null;
  		if (sqlContext.getDbAlias() != null) {
  			conn = getConnection(sqlContext.getDbAlias());
  		} else {
  			conn = getConnection();
  		}
  		if (conn == null) {
  			throw new IllegalArgumentException(sqlContext.getDbAlias());
  		}
  
  		CallableStatement stmt = sqlFilterManager.doCallableStatement(
  				sqlContext,
  				conn.prepareCall(sqlContext.getExecutableSql(), sqlContext.getResultSetType(),
  						sqlContext.getResultSetConcurrency()));
  		return stmt;
  	}
docs: Callableステートメント初期化
  
  @param sqlContext SQLコンテキスト
  @return CallableStatement
  @throws SQLException SQL例外