Changes between Version 1 and Version 2 of Overview
- Timestamp:
- 04/11/06 06:37:04 (19 years ago)
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Overview
v1 v2 8 8 == Goals and Objectives == 9 9 10 For a detailed expla ination of the design influences for the VSO,10 For a detailed explanation of the design influences for the VSO, 11 11 please see 12 12 [http://virtualsolar.org/docs/VSO_strawman_20021125.pdf The Virtual Solar Observatory Design Proposal, 2002 November]. 13 Relev ent excerpts are contained below.13 Relevant excerpts are contained below. 14 14 15 15 === Principal Features === … … 24 24 === Original Prototype === 25 25 26 The original VSO prototype, which is occas sionally refered to as26 The original VSO prototype, which is occasionally referred to as 27 27 version 0.5, contained the following features: 28 28 … … 37 37 * a central catalog, 38 38 * grid computing 39 * any fe tures that limit or restrict access to data or software (authentication).39 * any features that limit or restrict access to data or software (authentication). 40 40 41 41 Planned features for later implementation included the following: … … 43 43 * catalog caching (to speed queries), 44 44 * multiple instances of the VSO (to make the VSO truly virtual, it could run on local machines instead of on a small number of remote servers), and 45 * logging of searches (without identify ng the party who carried out the original search).45 * logging of searches (without identifying the party who carried out the original search). 46 46 47 47 This reference implementation imparted the following ideas into the … … 49 49 50 50 51 First, it is not a monolit ic server with a database that stores51 First, it is not a monolithic server with a database that stores 52 52 metadata. Instead, it is an agile, lightweight application program 53 53 that accepts input (user queries) and provides output (data location … … 79 79 == VSO 0.6 == 80 80 81 With VSO 0.6, the in idividual objects were simplified and attempts81 With VSO 0.6, the individual objects were simplified and attempts 82 82 were made so that each one could function autonomously. The system 83 83 was modeled as additional objects, while still using the basic overall … … 98 98 The changes from 0.5 to 0.6 were refinements of the VSO architecture 99 99 to assist with later maintenance of the VSO. In addition, the data 100 model signi cantly changed with this revision. The following additional100 model significantly changed with this revision. The following additional 101 101 objectives were realized: 102 102 … … 124 124 data providers. To maintain the virtual aspects of the system, 125 125 provisions have been made for multiple Central Server mirrors, and for 126 the possibil ty of no Central Servers being available.126 the possibility of no Central Servers being available. 127 127 128 128 VSO 0.7 was never released to the public, due to flaws in the … … 133 133 134 134 To solve the logic errors present in 0.7, modifications were made to the 135 ordering mechani ms within VSO. The following changes were made:135 ordering mechanisms within VSO. The following changes were made: 136 136 137 137 * Data Providers returned enough information for a User Interface to repeat the query, without having maintained records of what the original query was. … … 158 158 === VSO 1.2 === 159 159 160 The 1.2 release encorporated refinements suggested by the solar physics160 The 1.2 release incorporated refinements suggested by the solar physics 161 161 community, and attempted to make the overall system easier to maintain. 162 162 … … 182 182 * provided a mechanism to pass arguments into the search form to pre-select items. 183 183 184 185 === VSO 1.4 === 186 187 The 1.4 release included modifcations to both the underlying core, and the web-based User Interface 188 to enable scientists to more easily identify data sets of interest. 189 190 The following modifications were made to to the VSO internals: 191 192 * Populated additional information in the VSO Registry, including 'detector' and 'filter', 193 * and patched a problem with incorrect typing of data returned from the API. 194 195 Some modifications were made to the web-based User Interface, to allow 196 users to select based on instruments or observatories, without knowing the specific 197 data repository that maintained the data products. Some cosmetic changes were 198 made to unify the look and feel of the web-based User Interface and the online 199 documentation for VSO. 200 184 201 185 202 == What VSO isn't ==