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Add notes for 2018-04-18

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Alan Orth
2018-04-18 12:38:12 +03:00
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@ -332,3 +332,37 @@ Total time: 4 minutes 12 seconds
## 2018-04-16
- Communicate with Bioversity about their project to migrate their e-Library (Typo3) and Sci-lit databases to CGSpace
## 2018-04-18
- IWMI people are asking about building a search query that outputs RSS for their reports
- They want the same results as this Discovery query: https://cgspace.cgiar.org/discover?filtertype_1=dateAccessioned&filter_relational_operator_1=contains&filter_1=2018&submit_apply_filter=&query=&scope=10568%2F16814&rpp=100&sort_by=dc.date.issued_dt&order=desc
- They will need to use OpenSearch, but I can't remember all the parameters
- Apparently search sort options for OpenSearch are in `dspace.cfg`:
```
webui.itemlist.sort-option.1 = title:dc.title:title
webui.itemlist.sort-option.2 = dateissued:dc.date.issued:date
webui.itemlist.sort-option.3 = dateaccessioned:dc.date.accessioned:date
webui.itemlist.sort-option.4 = type:dc.type:text
```
- They want items by issue date, so we need to use sort option 2
- According to the DSpace Manual there are only the following parameters to OpenSearch: format, scope, rpp, start, and sort_by
- The OpenSearch `query` parameter expects a Discovery search filter that is defined in `dspace/config/spring/api/discovery.xml`
- So for IWMI they should be able to use something like this: https://cgspace.cgiar.org/open-search/discover?query=dateIssued:2018&scope=10568/16814&sort_by=2&order=DESC&format=rss
- There are also `rpp` (results per page) and `start` parameters but in my testing now on DSpace 5.5 they behave very strangely
- For example, set `rpp=1` and then check the results for `start` values of 0, 1, and 2 and they are all the same!
- If I have time I will check if this behavior persists on DSpace 6.x on the official DSpace demo and file a bug
- Also, the DSpace Manual as of 5.x has very poor documentation for OpenSearch
- They don't tell you to use Discovery search filters in the `query` (with format `query=dateIssued:2018`)
- They don't tell you that the sort options are actually defined in `dspace.cfg` (ie, you need to use `2` instead of `dc.date.issued_dt`)
- They are missing the `order` parameter (ASC vs DESC)
- I notice that DSpace Test has crashed again, due to memory:
```
# grep -c 'java.lang.OutOfMemoryError: Java heap space' /var/log/tomcat7/catalina.out
178
```
- I will increase the JVM heap size from 5120M to 6144M, though we don't have much room left to grow as DSpace Test (linode19) is using a smaller instance size than CGSpace