Plugin Construct Function

When using a plugin multiple times in one template, using different function within the plugin, i.e.

{exp:my_plugin:my_function_01} {exp:my_plugin:my_function_02} {exp:my_plugin:my_function_03}

Is the my_plugin construct function called multiple times, or just once for all three occasions.

I’m making a database query in the plugin and I’d rather only make the query once rather than three times.

my alternative would be to use tagdata i.e

{exp:my_plugin:my_function} {my_var_01} {my_var_02} {my_var_03} {/exp:my_plugin:my_function}

but I’d rather not do this as I prefer the former method