Data Space Management Data Space management Upon migration of an eu to a new ce. The set of bindings to resources accessible by the eU must be rearranged Resource =<lVT> Resources can be bound to an EU through 3 forms of binding 2 By identifier(strongest) By value 2 By type(weakest 2021/24 Institute of Computer Software, Nanjing University
Data Space Management Upon migration of an EU to a new CE: The set of bindings to resources accessible by the EU must be rearranged Resource =<I,V,T> Resources can be bound to an EU through 3 forms of binding: → By identifier (strongest) → By value → By type (weakest) 2021/2/4 Institute of Computer Software, Nanjing University 16
Bindings, Resources, DS Mgmt resource Free Fixed Fixed not Transferrable Transferrable Transferrable By Identifier By move Network reference Network (Network reference) reference By value By cop By copy (Network By move, Network (Network reference) reference reference By Type Re-binding Re-binding Re-binding Network reference, (Network reference,(Network By copy, By move By copy y) reference) binding 2021/24 Institute of Computer Software, Nanjing University
Free Transferrable Fixed Transferrable Fixed Not Transferrable By Identifier By move (Network reference) Network reference Network reference By Value By copy (By move, Network reference) By copy (Network reference) (Network reference) By Type Re-binding (Network reference, By copy, By move) Re-binding (Network reference, By copy) Re-binding (Network reference) resource binding 2021/2/4 Institute of Computer Software, Nanjing University 17
DS Management Mechanisms (a)By Source ce Souce ce Domination cl Before ource ouce cI Donington ce 2021/24 Institute of Computer Software, Nanjing University
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DS Management Mechanisms (b Network reference Before After Souce CE Source cE Destnomon CE (c)By copy (6(6 Souce CE Destnohon CE 2021/24 Institute of Computer Software, Nanjing University
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DS Management Mechanisms (d)Re-binding Afer SOUce CE Destination CE SOUCe cE Destination CE 2021/24 Institute of Computer Software, Nanjing University
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