Class: ProjectUnification::SpecialHandlers::RangedLotCategoryHandler

Inherits:
Object
  • Object
show all
Defined in:
lib/project_unification/special_handlers.rb

Overview

Handler for RangedLotCategory with name-based duplicate detection.

Phase 1 (migrate): source categories whose name collides with a target category have their name replaced with a per-record sentinel string so the bulk SQL update can move them without a uniqueness conflict. They are registered in merge_registry for Phase 2.

Phase 2 (run_cleanup): target.unify(sentinel) reroutes ranged_lots (CollectionObjects) from the sentinel to the surviving target category, then destroys the sentinel.

Constant Summary collapse

SENTINEL_PREFIX = 
'UNIFICATION TO PROJECT'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source_project_id:, target_project_id:, options: {}) ⇒ RangedLotCategoryHandler

Returns a new instance of RangedLotCategoryHandler.



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# File 'lib/project_unification/special_handlers.rb', line 212

def initialize(source_project_id:, target_project_id:, options: {})
  @source_project_id = source_project_id
  @target_project_id = target_project_id
end

Instance Attribute Details

#source_project_id ⇒ Object (readonly)

Returns the value of attribute source_project_id.



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# File 'lib/project_unification/special_handlers.rb', line 210

def source_project_id
  @source_project_id
end

#target_project_id ⇒ Object (readonly)

Returns the value of attribute target_project_id.



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# File 'lib/project_unification/special_handlers.rb', line 210

def target_project_id
  @target_project_id
end

Instance Method Details

#find_conflicts ⇒ Object (private) 



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# File 'lib/project_unification/special_handlers.rb', line 251

def find_conflicts
  target_names = RangedLotCategory.where(project_id: target_project_id).pluck(:name, :id).to_h

  RangedLotCategory.where(project_id: source_project_id).filter_map do |rlc|
    target_id = target_names[rlc.name]
    [rlc, target_id] if target_id
  end
end

#migrate ⇒ Object 



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# File 'lib/project_unification/special_handlers.rb', line 217

def migrate
  result = {
    track: :special,
    model: 'RangedLotCategory',
    migrated: 0,
    duplicates_found: [],
    errors: [],
    merge_registry: []
  }

  find_conflicts.each do |source_rlc, target_id|
    source_rlc.update_columns(
      name: "#{SENTINEL_PREFIX} #{target_project_id} #{source_rlc.id}"
    )
    result[:duplicates_found] << { source_id: source_rlc.id, target_id: target_id }
    result[:merge_registry] << {
      model: 'RangedLotCategory', renamed_id: source_rlc.id, target_id: target_id
    }
  end

  result[:migrated] = RangedLotCategory.where(project_id: source_project_id)
                                       .update_all(project_id: target_project_id)
  result
rescue => e
  {
    track: :special,
    model: 'RangedLotCategory',
    migrated: 0,
    errors: [{ error: e.message, backtrace: e.backtrace.first(3) }]
  }
end