Completed
Push — master ( bf6e80...735d1e )
by Dmitry
02:15
created

NestedSet::beforeCreate()   C

Complexity

Conditions 9
Paths 19

Size

Total Lines 58
Code Lines 36

Duplication

Lines 0
Ratio 0 %

Importance

Changes 0
Metric Value
dl 0
loc 58
rs 6.9928
c 0
b 0
f 0
cc 9
eloc 36
nc 19
nop 2

How to fix   Long Method   

Long Method

Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.

For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.

Commonly applied refactorings include:

1
<?php
2
3
namespace Tarantool\Mapper\Plugin;
4
5
use Tarantool\Mapper\Entity;
6
use Tarantool\Mapper\Mapper;
7
use Tarantool\Mapper\Plugin;
8
use Tarantool\Mapper\Space;
9
10
class NestedSet extends Plugin
11
{
12
    private $keys = ['id', 'parent', 'root', 'depth', 'left', 'right'];
13
    private $nestedSpaces = [];
14
15
    public function __construct(Mapper $mapper)
16
    {
17
        $this->mapper = $mapper;
18
    }
19
20
    public function addIndexes(Space $space)
21
    {
22
        $indexes = [
23
            ['id'],
24
            [
25
                'fields' => ['parent'],
26
                'unique' => false,
27
            ],
28
            ['root', 'left'],
29
            ['root', 'right'],
30
        ];
31
32
        foreach ($indexes as $index) {
33
            $fields = array_key_exists('fields', $index) ? $index['fields'] : $index;
34
            if ($space->castIndex(array_flip($fields), true) === null) {
35
                $space->createIndex($index);
36
            }
37
        }
38
    }
39
40
    public function beforeCreate(Entity $entity, Space $space)
41
    {
42
        if (!$this->isNested($space)) {
43
            return;
44
        }
45
        $repository = $space->getRepository();
46
47
        if ($entity->parent) {
48
            $parent = $repository->findOne($entity->parent);
0 ignored issues
show
Bug introduced by
The property parent does not seem to exist in Tarantool\Mapper\Entity.

An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name.

If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading.

Loading history...
49
            $entity->depth = $parent->depth + 1;
0 ignored issues
show
Bug introduced by
The property depth does not seem to exist in Tarantool\Mapper\Entity.

An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name.

If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading.

Loading history...
50
51
            $updateLeft = [];
52
            $updateRight = [];
53
            foreach ($repository->find(['root' => $entity->root]) as $node) {
0 ignored issues
show
Bug introduced by
The property root does not seem to exist in Tarantool\Mapper\Entity.

An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name.

If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading.

Loading history...
54
                if ($node->right >= $parent->right) {
55
                    if ($node->left > $parent->right) {
56
                        $updateLeft[$node->left] = $node;
57
                    }
58
                    $updateRight[$node->right] = $node;
59
                }
60
            }
61
62
            $entity->left = $parent->right;
0 ignored issues
show
Bug introduced by
The property left does not seem to exist in Tarantool\Mapper\Entity.

An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name.

If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading.

Loading history...
63
            $entity->right = $entity->left + 1;
0 ignored issues
show
Bug introduced by
The property right does not seem to exist in Tarantool\Mapper\Entity.

An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name.

If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading.

Loading history...
64
65
            krsort($updateRight);
66
            foreach ($updateRight as $node) {
67
                $node->right += 2;
68
                $node->save();
69
            }
70
71
            krsort($updateLeft);
72
            foreach ($updateLeft as $node) {
73
                $node->left += 2;
74
                $node->save();
75
            }
76
        } else {
77
            // new root
78
            $map = $space->getTupleMap();
79
            $spaceName = $space->getName();
80
81
            $entity->root = $entity->root ?: 0;
82
            $max = $this->mapper->getClient()->evaluate("
83
                local max = 0
84
                local root = $entity->root
85
                for i, n in box.space.$spaceName.index.root_right:pairs(root, {iterator = 'le'}) do
86
                    if n[$map->root] == root then
87
                        max = n[$map->right]
88
                    end
89
                    break
90
                end
91
                return max
92
            ")->getData()[0];
93
94
            $entity->left = $max + 1;
95
            $entity->right = $entity->left + 1;
96
        }
97
    }
98
99
    public function beforeRemove(Entity $instance, Space $space)
100
    {
101
        if (!$this->isNested($space)) {
102
            return;
103
        }
104
105
        $spaceName = $space->getName();
106
        $map = $space->getTupleMap();
107
108
        $result = $this->mapper->getClient()->evaluate("
109
            local removed_node = box.space.$spaceName:get($instance->id)
0 ignored issues
show
Bug introduced by
The property id does not seem to exist in Tarantool\Mapper\Entity.

An attempt at access to an undefined property has been detected. This may either be a typographical error or the property has been renamed but there are still references to its old name.

If you really want to allow access to undefined properties, you can define magic methods to allow access. See the php core documentation on Overloading.

Loading history...
110
            local remove_list = {}
111
            local update_list = {}
112
            for i, current in box.space.$spaceName.index.root_left:pairs({removed_node[$map->root], removed_node[$map->left]}, 'gt') do
113
                if current[$map->root] ~= removed_node[$map->root] then
114
                    break
115
                end
116
                if current[$map->left] < removed_node[$map->right] then
117
                    table.insert(remove_list, current[$map->id])
118
                else
119
                    table.insert(update_list, current[$map->id])
120
                end
121
            end
122
123
            local delta = removed_node[$map->right] - removed_node[$map->left] + 1
124
125
            for i, id in ipairs(remove_list) do
126
                box.space.$spaceName:delete(id)
127
            end
128
129
            box.space.$spaceName:update($instance->id, {
130
                {'=', $map->left, 0},
131
                {'=', $map->right, 0},
132
            })
133
134
            for i, id in pairs(update_list) do
135
                box.space.$spaceName:update(id, {
136
                    {'-', $map->left, delta},
137
                    {'-', $map->right, delta}
138
                })
139
            end
140
141
            return remove_list, update_list, delta, removed_node
142
        ")->getData();
143
144
        // remove
145
        foreach ($result[0] as $id) {
146
            $space->getRepository()->forget($id);
147
        }
148
149
        // update
150
        foreach ($result[1] as $id) {
151
            $space->getRepository()->sync($id);
152
        }
153
154
        $space->getRepository()->flushCache();
155
    }
156
157
    public function isNested(Space $space, $force = false)
158
    {
159
        $spaceName = $space->getName();
160
        if ($force || !array_key_exists($spaceName, $this->nestedSpaces)) {
161
            $fields = [];
162
            foreach ($space->getFormat() as $field) {
163
                $fields[] = $field['name'];
164
            }
165
166
            $this->nestedSpaces[$spaceName] = !count(array_diff($this->keys, $fields));
167
        }
168
169
        return $this->nestedSpaces[$spaceName];
170
    }
171
172
    public function resetNestedSpacesCache()
173
    {
174
        $this->nestedSpaces = [];
175
    }
176
}
177