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https://issues.apache.org/jira/browse/SOLR-215?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Biestro updated SOLR-215:
-------------------------------
Description:
Allow multiple cores in one web-application (or one class-loader):
This allows to have multiple cores created from different config & schema in
the same application.
The side effect is that this also allows different indexes.
Implementation notes for the patch:
The patch allows to have multiple 'named' cores in the same application.
The current single core behavior has been retained - the core named 'null' -
but code could not be kept 100% compatible. (In particular, Solrconfig.config
is gone; SolrCore.getCore() is still here though).
A few classes were only existing as singletons and have thus been refactored.
The Config class feature-set has been narrowed to class loading relative to the
installation (lib) directory;
The SolrConfig class feature-set has evolved towards the 'solr config' part,
caching frequently accessed parameters;
The IndexSchema class uses a SolrConfig instance; there are a few parameters in
the configuration that pertain to indexing that were needed.
The SolrCore is built from a SolrConfig & an IndexSchema.
The creation of a core has become:
//create a configuration
SolrConfig config = SolrConfig.createConfiguration("solrconfig.xml");
//create a schema
IndexSchema schema = new IndexSchema(config, "schema0.xml");
//create a core from the 2 other.
SolrCore core = new SolrCore("core0", "/path/to/index", config, schema);
//Accessing a core:
SolrCore core = SolrCore.getCore("core0");
There are few other changes mainly related to passing through constructors the
SolrCore/SolrConfig used.
Some background on the 'whys':
http://www.nabble.com/Multiple-Solr-Cores-tf3608399.html#a10082201
http://www.nabble.com/Embedding-Solr-vs-Lucene%2C-multiple-Solr-cores--tf3572324.html#a9981355
was:
Allow multiple cores in one web-application (or one class-loader):
This allows to have multiple cores created from different config & schema in
the same application.
The side effect is that this also allows different indexes.
Some background on the 'whys':
http://www.nabble.com/Multiple-Solr-Cores-tf3608399.html#a10082201
http://www.nabble.com/Embedding-Solr-vs-Lucene%2C-multiple-Solr-cores--tf3572324.html#a9981355
> Multiple Solr Cores
> -------------------
>
> Key: SOLR-215
> URL: https://issues.apache.org/jira/browse/SOLR-215
> Project: Solr
> Issue Type: Improvement
> Reporter: Henri Biestro
> Priority: Minor
> Attachments: solr-trunk-533775.patch, solr-trunk-src.patch
>
>
> Allow multiple cores in one web-application (or one class-loader):
> This allows to have multiple cores created from different config & schema in
> the same application.
> The side effect is that this also allows different indexes.
> Implementation notes for the patch:
> The patch allows to have multiple 'named' cores in the same application.
> The current single core behavior has been retained - the core named 'null' -
> but code could not be kept 100% compatible. (In particular, Solrconfig.config
> is gone; SolrCore.getCore() is still here though).
> A few classes were only existing as singletons and have thus been refactored.
> The Config class feature-set has been narrowed to class loading relative to
> the installation (lib) directory;
> The SolrConfig class feature-set has evolved towards the 'solr config' part,
> caching frequently accessed parameters;
> The IndexSchema class uses a SolrConfig instance; there are a few parameters
> in the configuration that pertain to indexing that were needed.
> The SolrCore is built from a SolrConfig & an IndexSchema.
> The creation of a core has become:
> //create a configuration
> SolrConfig config = SolrConfig.createConfiguration("solrconfig.xml");
> //create a schema
> IndexSchema schema = new IndexSchema(config, "schema0.xml");
> //create a core from the 2 other.
> SolrCore core = new SolrCore("core0", "/path/to/index", config, schema);
> //Accessing a core:
> SolrCore core = SolrCore.getCore("core0");
> There are few other changes mainly related to passing through constructors
> the SolrCore/SolrConfig used.
> Some background on the 'whys':
> http://www.nabble.com/Multiple-Solr-Cores-tf3608399.html#a10082201
> http://www.nabble.com/Embedding-Solr-vs-Lucene%2C-multiple-Solr-cores--tf3572324.html#a9981355
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