Thanks much Andrea esp. for the suggestion of SolrCoreAware!
Best, Mark. On Thu, Jun 30, 2016 at 10:23 AM, Andrea Gazzarini <gxs...@gmail.com> wrote: > Hi, > the lifecycle of your Solr extension (i.e. the component) is not something > that's up to you. > Before designing the component you should read the framework docs [1], in > order to understand the context where it will live, once deployed. > > There's nothing, as far as I know, other than the component callbacks > (e.g. the inform, init methods) that can help you to manage the lifecycle > of a custom class you're using within the component. Look at the > SolrCoreAware [2] interface, maybe it could fit your needs. > From what you write it seems you could need something like a singleton > (which is often an anti-pattern in distributed environment) , but without > further details I'm just shooting in the dark > > In addition: you wrote a component so I guess it shouldn't be so hard to > have a look at one of the existing built-in components. I'm quite sure they > already met (and solved) a similar issue. > > Best, > Andrea > > [1] > https://lucene.apache.org/solr/6_1_0/solr-core/org/apache/solr/handler/component/SearchComponent.html > [2] https://wiki.apache.org/solr/SolrPlugins#SolrCoreAware > > > On 30/06/16 16:00, Mark Robinson wrote: > >> Hi, >> >> I have a java OBJECT which I need to load once. >> I have written a java custom component, which I have added in >> "last-components" in solrconfig.xml, from which I want to access the above >> mentioned OBJECT when each search request comes in. >> >> Is there a way I can load a java object on server/ instance startup? >> OR >> Load it when the first call comes to SOLR? >> >> For the time being I created that Java object inside the custom component >> itself; but it is loaded each time a search request comes in. >> >> Could some one pls give some pointers on how my above requirement can be >> achieved in SOLR? >> >> Thanks! >> Mark >> >> >
