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Warning

Just a note: If we make this schema more restrictive, we diverge from the original schema. - Jochen

 

Note

This is explained in the beginning of section 4. Dataformat

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Description

When the IP-address is obfuscated, this will have the disadvantage that information on the geographic location, for instance, can no longer be derived. For this reason, the C-Class subnet must be provided. The C-Class subnet, which consists of the three most significant bytes from the IP-address, is used to designate the network ID. The final (most significant) byte, which designates the HOST ID, is replaced with a '0'. The C-class Subnet may optionally be hashed using MD5 encryption.

XPath

ctx:context-object/ctx:requester/ctx:identifier

If the C-Class subnet is hashed, the MD5 hash must be provided in the following element:

ctx:context-object/ctx:metadata/dini:requesterinfo/dini:hashed-c

If this element is used, the <metadata> element must be preceded by
ctx:requester/ctx:metadata-by-al/ctx:format
with value
"http://dini.de/namespace/oas-requesterinfo"

Usage

Optional

Format

A data-URI, consisting of the prefix "data:,", followed either by a 32-digit hexadecimal number, or by three hexadecimal numbers separated by a dot, followed by a dot and a '0'.

Examples

data:,118.94.150.0data0
data:,ec17f0564f32240c0a9d848d4b823ef2a

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Description

The request type specifies if the request is for an object file or a metadata record.

XPath

ctx:context-object/ctx:service-type/ctx:metadata-by-val/ctx:metadata/dcterms:type

If this element is used, the <metadata> element must be preceded by

ctx:requester/ctx:metadata-by-val/ctx:format
with value
"http://dublincore.org/documents/2008/01/14/dcmi-terms/"

Inclusion

Mandatory

Format

One of these values must be used:

  • info:eu-repo/semantics/objectFile or
  • info:eu-repo/semantics/descriptiveMetadata
    See for explanation of these concepts info:eu-repo Object types

Example

info:eu-repo/semantics/objectFile

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