Bp_Search_Documents::sql( $search_term,  $only_totalrow_count = false )

		public function sql( $search_term, $only_totalrow_count = false ) {

			global $wpdb, $bp;
			$query_placeholder = array();

			$user_groups = array();
			if ( bp_is_active( 'groups' ) ) {

				// Fetch public groups.
				$public_groups = groups_get_groups(
					array(
						'fields'   => 'ids',
						'status'   => 'public',
						'per_page' => - 1,
					)
				);
				if ( ! empty( $public_groups['groups'] ) ) {
					$public_groups = $public_groups['groups'];
				} else {
					$public_groups = array();
				}

				$user_groups = array();
				if ( is_user_logged_in() ) {

					$groups = groups_get_user_groups( bp_loggedin_user_id() );
					if ( ! empty( $groups['groups'] ) ) {
						$user_groups = $groups['groups'];
					} else {
						$user_groups = array();
					}
				}

				$user_groups = array_unique( array_merge( $user_groups, $public_groups ) );
			}

			$friends = array();
			if ( bp_is_active( 'friends' ) && is_user_logged_in() ) {

				// Determine friends of user.
				$friends = friends_get_friend_user_ids( bp_loggedin_user_id() );
				if ( empty( $friends ) ) {
					$friends = array( 0 );
				}
				array_push( $friends, bp_loggedin_user_id() );
			}


			$sql = ' SELECT ';

			if ( $only_totalrow_count ) {
				$sql .= ' COUNT( DISTINCT d.id ) ';
			} else {
				$sql .= $wpdb->prepare(" DISTINCT d.id, 'documents' as type, d.title LIKE %s AS relevance, d.date_created as entry_date  ", '%' . $wpdb->esc_like( $search_term ) . '%' );
			}

			$sql .= " FROM {$bp->document->table_name} d, {$bp->document->table_name_meta} dm WHERE ( d.id = dm.document_id )";

			$privacy = array( 'public' );
			if( is_user_logged_in() ) {
				$privacy[] = 'loggedin';
			}

			$sql .= $wpdb->prepare(
				" AND (
					(
						d.title LIKE %s
						OR dm.meta_key = 'extension'
						AND dm.meta_value LIKE %s
						OR dm.meta_key = 'file_name'
						AND dm.meta_value LIKE %s
					) 
					AND 
					(
							( d.privacy IN ( '" . implode( "','", $privacy ) . "' ) ) " .
							( isset( $user_groups ) && ! empty( $user_groups ) ? " OR ( d.group_id IN ( '" . implode( "','", $user_groups ) . "' ) AND d.privacy = 'grouponly' )" : '' ) .
							( bp_is_active( 'friends' ) && ! empty( $friends ) ? " OR ( d.user_id IN ( '" . implode( "','", $friends ) . "' ) AND d.privacy = 'friends' )" : '' ) .
							( is_user_logged_in() ? " OR ( d.user_id = '" . bp_loggedin_user_id() . "' AND d.privacy = 'onlyme' )" : '' ) .
					")
				)",
				'%' . $wpdb->esc_like( $search_term ) . '%',
				'%' . $wpdb->esc_like( $search_term ) . '%',
				'%' . $wpdb->esc_like( $search_term ) . '%'
			);

			return apply_filters(
				'bp_search_documents_sql',
				$sql,
				array(
					'search_term'         => $search_term,
					'only_totalrow_count' => $only_totalrow_count,
				)
			);
		}