1 Process overview

ProcessUpload or ProcessReIdentify WebService methods identify the Upload as usual.
All defined UploadTags are parsed against the asset_information.infoxml document
A batchUpdate call is prepared from AssetType, Upload ItemID and UploadTag/value Dictionary
BatchUpdate WebService is called.

2 UploadTag definition

Uploadtagname_defintion table

Column	DataType	Description
uploadtagname_definitionid	int	Primary key
uploadtagname	string	uploadTagname
xpath	string	Xpath used to extract the tag value
xmlnamespaces	string	Xmlnamespaces needed by Xpath. Space seperated list of xml namespace definitions: xmlns:rdf="rdf namespace url" xmlns:iptc="iptc namespace url"
functionname	string	(Optional) function name
functionrequireduploadtagnames	string	Tags that should have already been parsed before this tag is processed
enabled	bit	Is this uploadTag enabled
systemDefined	bit	Is this uploadTag defined by Digizuite

3 Defining custom uploadtags

Important: Custom tags that clash with future updates of DAM Center will be renamed to <tagname>RENAMED<GUID>.

To avoid this, always start custom tags with custom: and set systemDefined to 0.

4 Defined functions DigiZuiteLogic\UploadInformation\Bll\TagFunctions.bll.cs

If requiredTags contains uploadtags, the first tag is used as the argument source for the function, otherwise the Xpath is used as the argument source.

ShortestString - Selects shortest string
LongestString - Selects longest string
SelectInt - Selects values which contain only numbers that match the regular expression:

"^\s*\d+\s*$"

SelectNonInt - Selects values that do not match SelectInt

"^\s*\d+\s*$"

SelectIntFromStart - Selects values which begin with numbers that match the regular expression:

"^\s*\d+.*$"

Only the number part is returned.
Example: 1234kb would be returned as 1234
SelectDecimal - Selects values which can be parsed as decimal
SelectAspect - Selects all values that match the regular expression:

"^\s*\d+[\:/]\d+\s*$"

Example: 16/9 or 4:3
SelectDuration - Selects all values that match the regular expression:

@"(?n:^(?=\d)(?<time>(?<hours>[01]\d|2[0-3]):(?<minutes>[0-5]\d):(?<seconds>[0-5]\d)\.(?<milliseconds>\d{3}))$)"

Example: 23:59:59.120
SelectChannelPositions - Selects all values that match the regular expression:

@"^\s*\d+(?:\.\d+)?/\d+(?:\.\d+)?/\d+(?:\.\d+)?\s*$"

Example: 2/0/0 or 5/2/1.1
ValueCount - Returns count of values
JoinBySemicolon - Returns values joined by semicolons as a single string
JoinBySpace - Returns values joined by spaces as a single string
JoinByComma - Returns values joined by commas as a single string
JoinByForwardSlash - Returns values joined by forward slashes as a single string
JoinByBackSlash - Returns values joined by back slashes as a single string
JoinByCrLf - Returns values joined by forward carrier linefeeds as a single string
JoinByVerticalbar - Returns values joined by vertical bar | as a single string
SplitBySemicolon - Returns a list of values Split by semicolon
SplitBySpace - Returns a list of values Split by space
SplitByComma - Returns a list of values Split by Comma
SplitByCrLf - Returns a list of values Split by carrier linefeeds
SplitByForwardSlash - Returns a list of values Split by Forward slash
SplitByBackSlash - Returns a list of values Split by Back slash
SplitByVerticalbar - Returns a list of values Split by Vertical Bar |
WidthFromGeometry - Return the width from the Imagemagick geometry value
HeightFromGeometry - Returns the height from the Imagemagick geometry value
XOffsetFromGeometry - Returns the X-Offset from the Imagemagick geometry value
YOffsetFromGeometry - Returns the Y-Offset from the Imagemagick geometry value
DpiXFromResolution - Returns the x part of the resolution (96x96)
DpiYFromResolution - Returns the y part of the resolution (96x96)
RoundVideoRotation - Returns the rotation rounded to nearest 90°

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