source: vlo/branches/vlo-3.0/UPGRADE @ 5071

----------------------------
General upgrade instructions
----------------------------

Quick overview of the upgrade steps (for details see DEPLOY-README)

- Unpack the VLO distribution tarball

- Go to the 'war' directory
- Unzip the vlo-solr-#.##.war in a new 'solr' directory
- Unzip the vlo-web-app-#.##.war in a new 'vlo' directory

- In the 'config' directory, adjust VloConfig.xml as needed (make a backup first)
- Make any further version specific adjustments as described in this document

- Stop the Tomcat or at least the VLO web app and Solr applications
- Replace the 'current' symlink with a link to location of the new VLO directory

- If needed, flush the Solr index (by removing the data directory)
- In 'bin', run the importer using the updated configuration file:
    ./vlo_solr_importer.sh -c ../config/VloConfig.xml

---------------------------
Upgrading from 2.18 to 3.0
---------------------------

* In version 3.0, the context parameters for the VLO web application have changed, see
the file META-INF/context.xml for examples. The following parameters are now being
processed:      

- eu.carlin.cmdi.vlo.config.location
        Optional but recommended. Should point to the location of VloConfig.xml that
        should be used. Replaces The previously available parameter 'externalConfig', which is
        no longer supported.

- eu.carlin.cmdi.vlo.solr.serverUrl
        Optional. Configures the base URL of the SOLR instance to connect to.
        Usage is not recommended, instead configure the Solr URL via VloConfig.xml (see 
        below).

* New options have been added to the shared VLO configuration file VloConfig.xml 
(in vlo-3.0/config):

- The 'length' attributes in list elements can be removed

- The Solr endpoint has changed because it is now multicore. Change for example:

        <solrUrl>http://localhost:8084/vlo_solr/</solrUrl>
    
into

        <solrUrl>http://localhost:8084/vlo_solr/core0/</solrUrl>

This also applies to the eu.carlin.cmdi.vlo.solr.serverUrl context parameter (see above).

- The following elements should be added:

        <!-- begin added in 3.0 -->

        <collectionFacet>collection</collectionFacet> 

        <simpleSearchFacetFields>
                <simpleSearchFacetField>language</simpleSearchFacetField>
                <simpleSearchFacetField>resourceClass</simpleSearchFacetField>
                <simpleSearchFacetField>genre</simpleSearchFacetField>
                <simpleSearchFacetField>nationalProject</simpleSearchFacetField>
        </simpleSearchFacetFields>

        <!-- Fields shown in expanded search results on the search page -->
        <searchResultFields>
                <searchResultField>name</searchResultField>
                <searchResultField>country</searchResultField>
                <searchResultField>languages</searchResultField>
                <searchResultField>modality</searchResultField>
                <searchResultField>subject</searchResultField>
                <searchResultField>genre</searchResultField>
                <searchResultField>organisation</searchResultField>
                <searchResultField>collection</searchResultField>
                <searchResultField>nationalProject</searchResultField>
        </searchResultFields>

        <!-- Fields ignored in the record page -->
        <ignoredFields>
                <ignoredField>format</ignoredField>
        </ignoredFields>

        <!-- Fields shown as technical fields in the record page -->
        <technicalFields>
                <technicalField>id</technicalField>
                <technicalField>dataProvider</technicalField>
                <technicalField>metadataSource</technicalField>
                <technicalField>_landingPageRef</technicalField>
                <technicalField>_searchPageRef</technicalField>
                <technicalField>_contentSearchRef</technicalField>
                <technicalField>_lastSeen</technicalField>
                <technicalField>_componentProfile</technicalField>
        </technicalFields>

        <!-- end added in 3.0 -->

- The element 'facetfield' should be replaced with new values:

        <!-- begin changed in 3.0 -->

        <facetFields>
                <facetField>language</facetField>
                <facetField>resourceClass</facetField>
                <facetField>continent</facetField>
                <facetField>country</facetField>
                <facetField>modality</facetField>
                <facetField>genre</facetField>
                <facetField>subject</facetField>
                <facetField>format</facetField>
                <facetField>organisation</facetField>
                <facetField>nationalProject</facetField>
                <facetField>keywords</facetField>
                <facetField>dataProvider</facetField>
        </facetFields>

        <!-- end changed in 3.0 -->

* The location of the Solr index data directory is now governed through a java system
property 'solr.data.dir'. Add the following to ${catalina.home}/bin/setenv.sh:

        export JAVA_OPTS="$JAVA_OPTS -Dsolr.data.dir=/lat/webapps/vlo/solr/data-beta"

Substitute the directory with the actual desired location of the index data. The
parent directory has to exist and should be writable by the Tomcat user.

---------------------------
Upgrading from 2.17 to 2.18
---------------------------

* In version 2.18 of the VLO, the URL mapping has been changed. To prevent
existing references and bookmarks from breaking, add rewrite rules to the
HTTP server to achieve the following mappings:

[TODO: Define actual mod_rewrite rules and document here]

- {vlobase}/?wicket:bookmarkablePage=:eu.clarin.cmdi.vlo.pages.ShowResultPage&docId={docId}
        -> {vlobase}/record?docId={docId}

- {vlobase}/?wicket:bookmarkablePage=:eu.clarin.cmdi.vlo.pages.ShowAllFacetValuesPage&selectedFacet={facet}
        -> {vlobase}/values/{facet}

In both case all additional GET parameters SHOULD be kept.

Next to the URL mapping, the XML parameter file has undergone some changes:

    <!-- Sets the maximum number of page instances which will be stored in the application scoped second level cache for faster retrieval -->
    <pagesInApplicationCache>40</pagesInApplicationCache>
    
    <!-- Sets the maximum size (in KILOBYTES) of the File where page instances per session are stored. -->
    <sessionCacheSize>10000</sessionCacheSize>

Has been added to tune the Wicket page cache. The first parameter allows you
to set the size of the application wide cache holding pages. The second parameter
denotes the size of the cache (in kilobytes) associated with a session. The values
listed above are the Wicket defaults.

Other changes in the parameter file:
- maxFileSize and use MaxFileSize have been integrated into one parameter:
  
  maxFileSize

  If equal to 0, no upper limit to the size of metadata input files will be 
  applied.

- maxDaysToLife has been renamed into maxDaysInSolr

- VloHomeLink has been renamed into homeUrl

- helpUrl has been added; a link to a help page.

- The facetConceptsFile parameter, referencing the facetConcepts.xml file, 
  has been added also. This is part of the effort of making parameterised 
  instantiation of the VLO possible.

- Also, the facetOverviewLength parameter has been added. This parameter controls
  the listing of facets on the search page.

- Similar to 'useMaxFileSize' the expectReverseProxy parameter has been removed

Finally, 

    <cqlEndpointFilter>http://cqlservlet.mpi.nl/</cqlEndpointFilter>
    
    <cqlEndpointAlternative>http://cqlservlet.mpi.nl/</cqlEndpointAlternative>

add the possibility of creating a filter for endpoints.