Read IBM FileNet GCD from Database as XML script

read-ibm-filenet-gcd-from-db.ps1

$SQLServer = "mysqlserver1232.westus2.cloudapp.azure.com"
$SQLDBName = "ABC_FNGCD"
$uid ="sa"
$pwd = "my-db-pass123"
##modify below query if you want specific GCD version
$SqlQuery = "select  gcd_blob  FROM FNGCD WHERE epoch_id = (select last_epoch_id from FNGCD where epoch_id = 0);"
$SqlConnection = New-Object System.Data.SqlClient.SqlConnection
$SqlConnection.ConnectionString = "Server = $SQLServer; Database = $SQLDBName; User ID = $uid; Password = $pwd;"
$SqlCmd = New-Object System.Data.SqlClient.SqlCommand
$SqlCmd.CommandText = $SqlQuery
$SqlCmd.Connection = $SqlConnection
$SqlAdapter = New-Object System.Data.SqlClient.SqlDataAdapter
$SqlAdapter.SelectCommand = $SqlCmd
$DataSet = New-Object System.Data.DataSet
$SqlAdapter.Fill($DataSet)

$DataSet.Tables

$instream = [System.IO.MemoryStream]::new($DataSet.Tables.gcd_blob)

$zlib = [System.IO.Compression.ZLibStream]::new(
    $instream,
    [System.IO.Compression.CompressionMode]::Decompress)

$outstream = [System.IO.MemoryStream]::new()
$zlib.CopyTo($outstream)
$zlib.Dispose()

# Choose encoding here
$enc = [System.Text.Encoding]::UTF8

##out to console
$enc.GetString($outstream.ToArray())

##out to XML file
$enc.GetString($outstream.ToArray()) | out-file my-gcd.xml -encoding utf8

IBM FileNet GCD (XML) is compressed with zlib stored in DB Blob/binary/bytea column these days it seems. If you have the GCDUtil from IBM support you still better of using that one.

If you have Java use java.util.zip.InflaterOutputStream (zlib)

Here a little PS script (needs 7.x or newer PS) to read the zlib compressed GCD and output as XML.

if you get

MethodInvocationException: Exception calling "CopyTo" with "1" argument(s): "The archive entry was compressed using an unsupported compression method."

your GCD is not compressed and you can just use plain MS SQL CMD

--read if uncompressed stored blob
SELECT CAST(cast(gcd_blob AS VARBINARY(MAX)) AS XML) AS MyXml
FROM FNGCD WHERE epoch_id = (select last_epoch_id from [ABC_FNGCD].[dbo].[FNGCD] where epoch_id = 0)

if I get around will do a bash script/other DBs

see here for other info about the GCD: https://bpmadmin.blogspot.com/2013/09/how-to-open-filenet-global_25.html

pretty print output XML file, see here: https://gist.github.com/TiloGit/3c2d49d09696c7054d3f76c78c341b1b