//
I'd suggest you use the QML Connections type - Signal and Handler Event System | Qt QML 5.8
Connections <SPAN class="punctuation token">{</SPAN> target<SPAN class="punctuation token">:</SPAN> spanFeatureLayer<SPAN class="punctuation token">.</SPAN>featureTable onQueryFeaturesStatusChanged<SPAN class="punctuation token">:</SPAN> <SPAN class="punctuation token">{</SPAN> <SPAN class="keyword token">if</SPAN> <SPAN class="punctuation token">(</SPAN>spanFeatureLayer<SPAN class="punctuation token">.</SPAN>featureTable<SPAN class="punctuation token">.</SPAN>queryFeaturesStatus <SPAN class="operator token">===</SPAN> Enums<SPAN class="punctuation token">.</SPAN>TaskStatusCompleted<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> console<SPAN class="punctuation token">.</SPAN><SPAN class="token function">log</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"complete"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">;</SPAN> <SPAN class="punctuation token">}</SPAN> <SPAN class="punctuation token">}</SPAN> <SPAN class="punctuation token">}</SPAN> <SPAN class="line-numbers-rows"><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN><SPAN></SPAN></SPAN>
The 2 should be pretty comparable, although I should note that we don't have any performance benchmarks in place for this scenario.
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