In the previous tutorial we learned to build larger objects and platelayers with the [object] and [platelayer] tags.
While learning about platelayers, you might have noticed a new builder keyword in the platelayer Excel.
1. The Generic Builder
The builder keyword decides what is to be done with input samples.
If a step has no builder keyword, the generic builder is used. This builder assumes that the output of a step equals the input.
The Samples2Plates is the one used in the *previous tutorial*.
This builder requires a plates object which it uses to generate new output samples for the step.
The output samples are generated from using the input samples to populate the plates matching the layout of the given plates object.
The layouts are defined as plates of integers. The integers decide the placement and number of wells for each sample. Thus, an experiment of 6 samples and a layout like the one above will result in 2 plates, each with 3 samples x 4 wells.
The output samples are added as entities in the database and as input for the next step in the experiment.
5. To Be Developed
More advanced builders will be added in the future, meanwhile you can go learn about *uploading to existing workflows*.