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last checkpoint: include cities in the nested set model calculation
Previously, the contents of the country files were read and inserted into the database in chunks of 1000. Then the Nested Set Model is built by reading the hierarchy.txt file and updating the records in the database(slow). At this point, the Nested Set Model is built first by reading the hierarchy.txt file, and combining it with the contents of the admin2Codes.txt file which contains the hierarchy for cities(Even though geonames.org has up to ADM5 division, it cuts-off at ADM2 for cities). After the nestedSet is built, the country files contents is mapped into a Geoname with the nestedSet properties(_lft, _rgt, depth and parent_id) and inserted into the database
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| <?php | ||
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| declare(strict_types=1); | ||
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| namespace Parables\Geo\Actions; | ||
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| use Illuminate\Support\Arr; | ||
| use Parables\Geo\Actions\Concerns\HasToastable; | ||
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| class GenNestedSetModelAction | ||
| { | ||
| use HasToastable; | ||
|
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| /** | ||
| * @param array<int|string,mixed> $hierarchy | ||
| * @return array | ||
| */ | ||
| public function execute(array $hierarchy = [], bool $nestChildren = false): array | ||
| { | ||
| ini_set('memory_limit', -1); | ||
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| if (empty($hierarchy)) { | ||
| $this->toastable->toast('Hierarchy is empty... Skipping ...', 'error'); | ||
| return []; | ||
| } | ||
|
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| return $this->buildTree(hierarchy: $hierarchy, nestChildren: $nestChildren); | ||
| } | ||
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| /** | ||
| * @param array<int|string,mixed> $hierarchy | ||
| * @return array | ||
| */ | ||
| public function buildTree(array $hierarchy, int &$index = 1, bool $nestChildren = false): array | ||
| { | ||
| $this->toastable->toast('Building Root Node ...'); | ||
| $rootId = array_key_first($hierarchy); | ||
| $depth = 0; | ||
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| $root = [ | ||
| 'id' => $rootId, | ||
| '_lft' => $index++, | ||
| '_rgt' => null, | ||
| 'depth' => $depth, | ||
| 'parent_id' => null, | ||
| ]; | ||
|
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| $this->toastable->toast('Building Children Nodes ...'); | ||
| $children = $this->buildNodes( | ||
| hierarchy: $hierarchy, | ||
| parentId: $rootId, | ||
| index: $index, | ||
| depth: $depth, | ||
| nestChildren: $nestChildren | ||
| ); | ||
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| $root['_rgt'] = $index++; | ||
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| if ($nestChildren) { | ||
| $root['children'] = $children; | ||
| return $root; | ||
| } | ||
| $this->toastable->toast('Tree Built successfully...'); | ||
| return [$rootId => $root] + $children; | ||
| // return array_merge([$rootId => $root], $children); | ||
| //$children[$rootId] = $root; | ||
| //return $children; | ||
| } | ||
|
|
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| /** | ||
| * @param array<int|string,mixed> $hierarchy | ||
| * @return array | ||
| */ | ||
| public function buildNodes(array $hierarchy, string|int $parentId, int &$index, int $depth, bool $nestChildren = false): array | ||
| { | ||
| $depth += 1; | ||
| $result = []; | ||
| $children = []; | ||
| foreach ($this->children($hierarchy, $parentId) as $id) { | ||
| $node = | ||
| [ | ||
| 'id' => $id, | ||
| '_lft' => $index++, | ||
| '_rgt' => null, | ||
| 'depth' => $depth, | ||
| 'parent_id' => $parentId, | ||
| ]; | ||
|
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| $this->toastable->toast('Getting sub nodes for: ' . $id); | ||
| $children = $this->buildNodes( | ||
| hierarchy: $hierarchy, | ||
| parentId: $id, | ||
| index: $index, | ||
| depth: $depth, | ||
| nestChildren: $nestChildren | ||
| ); | ||
|
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| $node['_rgt'] = $index++; | ||
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| if ($nestChildren) { | ||
| $node['children'] = $children; | ||
| $result[$id] = $node; | ||
| } else { | ||
| $result = $result + [$id => $node] + $children; | ||
| } | ||
| } | ||
| $this->toastable->toast('Done.'); | ||
| return $result; | ||
| } | ||
|
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| /** | ||
| * @param array<int|string, mixed> $hierarchy | ||
| */ | ||
| public function children(array $hierarchy, string|int $parentId): array | ||
| { | ||
| $this->toastable->toast('Getting children for parentId: ' . $parentId); | ||
| if (array_key_exists($parentId, $hierarchy)) { | ||
| return $hierarchy[$parentId] ?? []; | ||
| } | ||
| return []; | ||
| } | ||
|
|
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| /** | ||
| * @param array $tree | ||
| * @param array $result | ||
| * @param bool $includeLeaves | ||
| * @return mixed | ||
| */ | ||
| function flattenTree(array $tree, array &$result = [], bool $includeLeaves = false) | ||
| { | ||
| foreach ($tree as $key => $value) { | ||
| if (is_array($value) && !empty($value)) { | ||
| $result[$key] = array_keys($value); | ||
| $this->flattenTree($value, $result, $includeLeaves); | ||
| } else { | ||
| if ($includeLeaves) { | ||
| $result[$key] = []; | ||
| } | ||
| } | ||
| } | ||
|
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| return $result; | ||
| } | ||
| } |
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