SolrCollapseFunction::setNullPolicy
PHP function
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(PECL solr >= 2.2.0)
Sets the NULL Policy
Description
SolrCollapseFunction::setNullPolicy(string $nullPolicy): SolrCollapseFunction
Sets the NULL Policy. One of the 3 policies defined as class constants shall be passed. Accepts ignore, expand, or collapse policies.
Parameters
nullPolicy
Return Values
SolrCollapseFunction