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https://issues.apache.org/jira/browse/SOLR-5400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Noble Paul resolved SOLR-5400.
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Resolution: Fixed
Assignee: Noble Paul
committed
> NullPointerException
> ---------------------
>
> Key: SOLR-5400
> URL: https://issues.apache.org/jira/browse/SOLR-5400
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.5
> Reporter: Pascal Chollet
> Assignee: Noble Paul
> Priority: Minor
>
> I want write tests for some of our own components which internally use a
> SolrCore. As SolrCore is defined final, I cannot mock it and instead have to
> create an instance of it. Therefore I came across the following constructor:
> {code}public SolrCore(String name, CoreDescriptor cd) {
> this.setName(name);
> coreDescriptor = cd;
> this.schema = null;
> this.dataDir = null;
> this.solrConfig = null;
> this.startTime = System.currentTimeMillis();
> this.maxWarmingSearchers = 2; // we don't have a config yet, just pick a
> number.
> this.resourceLoader = null;
> this.updateHandler = null;
> this.isReloaded = true;
> this.reqHandlers = null;
> this.searchComponents = null;
> this.updateProcessorChains = null;
> this.infoRegistry = null;
> this.codec = null;
> solrCoreState = null;
> }
> {code}
> When calling this constructor there will always be a NullPointerException,
> because of the call of setName(...) before coreDescriptor is set. In setName
> this.coreDescriptor (which was not yet set) is being used:
> {code}
> public void setName(String v) {
> this.name = v;
> this.logid = (v==null)?"":("["+v+"] ");
> this.coreDescriptor = new CoreDescriptor(v, this.coreDescriptor);
> }
> {code}
> The fix probably is to set the coreDesciptor first and then call setName.
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