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SolrInputDocument
Returns true if the document has any child documents

SolrInputDocument::hasChildDocuments

(PECL solr >= 2.3.0)

SolrInputDocument::hasChildDocuments — Returns true if the document has any child documents

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public SolrInputDocument::hasChildDocuments ( void ) : bool

Checks whether the document has any child documents

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SolrInputDocument::addChildDocument() - Adds a child document for block indexing
SolrInputDocument::addChildDocuments() - Adds an array of child documents
SolrInputDocument::getChildDocuments() - Returns an array of child documents (SolrInputDocument)
SolrInputDocument::getChildDocumentsCount() - Returns the number of child documents