Volume Descriptor Record Contents

The Volume Descriptor Record (VDR) must be present in every CCOGIF file. If it is not given to the CCOGIF writer, it will be created with the default attribute values listed in the following table. If a VDR metadata feature is given to the CCOGIF writer and it defines only some of the ccogif_XXX attributes that appear in the table below, the default value will be “taken” for those not specified.

Attribute Name

Contents – Default Values

ccogif_log_vol_id

FME-generated CCOGIF dataset

ccogif_phys_vol_num

0

ccogif_vol_cre_date

Current date

ccogif_vol_data_desc

Empty string (“ ”)

ccogif_vol_gen_cntry

Empty string (“ ”)

ccogif_vol_gen_agncy

Empty string (“ ”)

ccogif_vol_gen_fclty

Empty string (“ ”)

ccogif_fmt_ctrl_doc_id

Empty string (“ ”)

ccogif_sw_release_id

Empty string (“ ”)

ccogif_feat_code_rev

Empty string (“ ”)

ccogif_num_ufl_recs

Computed from the amount of user data specified in the volume’s UFLR metadata features

ccogif_bytes_prev_rec

0

The value for the attribute ccogif_num_ufl_recs is always filled in automatically by the CCOGIF writer. Its value will be based on the length of the user data passed to the writer via the User Fixed-Length Records’ (UFLR) metadata features.