allow custom node-IDs during tree-import

[westram]

Need a possibility to import trees that use alternative IDs at leafs, e.g. 'acc' and/or 'start'/'stop' positions etc.

Possible implementation:

• provide importer with 2 ACI expressions:
  • 1st expression creates a unique ID from every leaf ID found in imported
  • 2nd expression creates a unique ID from every species existing in the
• test that all IDs generated by one expression are unique! (or bail out)
• map leafs of imported to species whereever both generated IDs match. Create zombies and warn on mismatch.
• special cases:
  • if 1st expression is not specified ⇒ use ID as found in
  • if 2nd expression is not specified ⇒ use 'name' field as ID

Notes:

• allow to define ACI expressions via import GUI
• allow to specify ACI expressions via arb_read_tree CLI

Example ACI to generate IDs:

readdb("acc");".";readdb("start");".";readdb("stop")|merge

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Related:

• allow to specify an explicit ACI in -exporter (instead of NDS)

[westram]

• [16866] provides a workaround
  • synchronize IDs in original database & save
  • run script to generate special IDs (e.g. from field "full_name")
  • import
  • again synchronize IDs
  • export to file
  • quit database without saving
  • reload prev. saved database and import from file