doctrine /
mongodb-odm
Complex classes like PersistenceBuilder often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use PersistenceBuilder, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 27 | final class PersistenceBuilder |
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| 28 | { |
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| 29 | /** |
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| 30 | * The DocumentManager instance. |
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| 31 | * |
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| 32 | * @var DocumentManager |
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| 33 | */ |
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| 34 | private $dm; |
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| 35 | |||
| 36 | /** |
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| 37 | * The UnitOfWork instance. |
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| 38 | * |
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| 39 | * @var UnitOfWork |
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| 40 | */ |
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| 41 | private $uow; |
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| 42 | |||
| 43 | /** |
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| 44 | * Initializes a new PersistenceBuilder instance. |
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| 45 | */ |
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| 46 | 572 | public function __construct(DocumentManager $dm, UnitOfWork $uow) |
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| 51 | |||
| 52 | /** |
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| 53 | * Prepares the array that is ready to be inserted to mongodb for a given object document. |
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| 54 | * |
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| 55 | * @param object $document |
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| 56 | * |
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| 57 | * @return array $insertData |
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| 58 | */ |
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| 59 | 32 | public function prepareInsertData($document) |
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| 60 | { |
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| 61 | 32 | $class = $this->dm->getClassMetadata(get_class($document)); |
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| 62 | 32 | $changeset = $this->uow->getDocumentChangeSet($document); |
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| 63 | |||
| 64 | 32 | $insertData = []; |
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| 65 | 32 | foreach ($class->fieldMappings as $mapping) { |
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| 66 | 32 | $new = $changeset[$mapping['fieldName']][1] ?? null; |
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| 67 | |||
| 68 | 32 | if ($new === null && $mapping['nullable']) { |
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| 69 | 4 | $insertData[$mapping['name']] = null; |
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| 70 | } |
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| 71 | |||
| 72 | /* Nothing more to do for null values, since we're either storing |
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| 73 | * them (if nullable was true) or not. |
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| 74 | */ |
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| 75 | 32 | if ($new === null) { |
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| 76 | 19 | continue; |
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| 77 | } |
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| 78 | |||
| 79 | // @Field, @String, @Date, etc. |
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| 80 | 32 | if (! isset($mapping['association'])) { |
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| 81 | 32 | $insertData[$mapping['name']] = Type::getType($mapping['type'])->convertToDatabaseValue($new); |
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| 82 | |||
| 83 | // @ReferenceOne |
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| 84 | 29 | } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::REFERENCE_ONE) { |
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| 85 | 11 | $insertData[$mapping['name']] = $this->prepareReferencedDocumentValue($mapping, $new); |
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| 86 | |||
| 87 | // @EmbedOne |
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| 88 | 21 | } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::EMBED_ONE) { |
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| 89 | 5 | $insertData[$mapping['name']] = $this->prepareEmbeddedDocumentValue($mapping, $new); |
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| 90 | |||
| 91 | // @ReferenceMany, @EmbedMany |
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| 92 | // We're excluding collections using addToSet since there is a risk |
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| 93 | // of duplicated entries stored in the collection |
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| 94 | 21 | } elseif ($mapping['type'] === ClassMetadata::MANY && ! $mapping['isInverseSide'] |
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| 95 | 21 | && $mapping['strategy'] !== ClassMetadata::STORAGE_STRATEGY_ADD_TO_SET && ! $new->isEmpty()) { |
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| 96 | 8 | $insertData[$mapping['name']] = $this->prepareAssociatedCollectionValue($new, true); |
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| 97 | } |
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| 98 | } |
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| 99 | |||
| 100 | // add discriminator if the class has one |
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| 101 | 19 | if (isset($class->discriminatorField)) { |
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| 102 | 3 | $discriminatorValue = $class->discriminatorValue; |
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| 103 | |||
| 104 | 3 | if ($discriminatorValue === null) { |
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| 105 | 1 | if (! empty($class->discriminatorMap)) { |
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| 106 | throw MappingException::unlistedClassInDiscriminatorMap($class->name); |
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| 107 | } |
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| 108 | |||
| 109 | 1 | $discriminatorValue = $class->name; |
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| 110 | } |
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| 111 | |||
| 112 | 3 | $insertData[$class->discriminatorField] = $discriminatorValue; |
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| 113 | } |
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| 114 | |||
| 115 | 19 | return $insertData; |
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| 116 | } |
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| 117 | |||
| 118 | /** |
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| 119 | * Prepares the update query to update a given document object in mongodb. |
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| 120 | * |
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| 121 | * @param object $document |
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| 122 | * |
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| 123 | * @return array $updateData |
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| 124 | */ |
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| 125 | public function prepareUpdateData($document) |
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| 126 | { |
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| 127 | $class = $this->dm->getClassMetadata(get_class($document)); |
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| 128 | $changeset = $this->uow->getDocumentChangeSet($document); |
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| 129 | |||
| 130 | $updateData = []; |
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| 131 | foreach ($changeset as $fieldName => $change) { |
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| 132 | $mapping = $class->fieldMappings[$fieldName]; |
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| 133 | |||
| 134 | // skip non embedded document identifiers |
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| 135 | if (! $class->isEmbeddedDocument && ! empty($mapping['id'])) { |
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| 136 | continue; |
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| 137 | } |
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| 138 | |||
| 139 | [$old, $new] = $change; |
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| 140 | |||
| 141 | // Scalar fields |
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| 142 | if (! isset($mapping['association'])) { |
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| 143 | if ($new === null && $mapping['nullable'] !== true) { |
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| 144 | $updateData['$unset'][$mapping['name']] = true; |
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| 145 | } else { |
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| 146 | if ($new !== null && isset($mapping['strategy']) && $mapping['strategy'] === ClassMetadata::STORAGE_STRATEGY_INCREMENT) { |
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| 147 | $operator = '$inc'; |
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| 148 | $value = Type::getType($mapping['type'])->convertToDatabaseValue($new - $old); |
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| 149 | } else { |
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| 150 | $operator = '$set'; |
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| 151 | $value = $new === null ? null : Type::getType($mapping['type'])->convertToDatabaseValue($new); |
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| 152 | } |
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| 153 | |||
| 154 | $updateData[$operator][$mapping['name']] = $value; |
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| 155 | } |
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| 156 | |||
| 157 | // @EmbedOne |
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| 158 | } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::EMBED_ONE) { |
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| 159 | // If we have a new embedded document then lets set the whole thing |
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| 160 | if ($new && $this->uow->isScheduledForInsert($new)) { |
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| 161 | $updateData['$set'][$mapping['name']] = $this->prepareEmbeddedDocumentValue($mapping, $new); |
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| 162 | |||
| 163 | // If we don't have a new value then lets unset the embedded document |
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| 164 | } elseif (! $new) { |
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| 165 | $updateData['$unset'][$mapping['name']] = true; |
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| 166 | |||
| 167 | // Update existing embedded document |
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| 168 | } else { |
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| 169 | $update = $this->prepareUpdateData($new); |
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| 170 | foreach ($update as $cmd => $values) { |
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| 171 | foreach ($values as $key => $value) { |
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| 172 | $updateData[$cmd][$mapping['name'] . '.' . $key] = $value; |
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| 173 | } |
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| 174 | } |
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| 175 | } |
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| 176 | |||
| 177 | // @ReferenceMany, @EmbedMany |
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| 178 | } elseif (isset($mapping['association']) && $mapping['type'] === 'many' && $new) { |
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| 179 | if (CollectionHelper::isAtomic($mapping['strategy']) && $this->uow->isCollectionScheduledForUpdate($new)) { |
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| 180 | $updateData['$set'][$mapping['name']] = $this->prepareAssociatedCollectionValue($new, true); |
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| 181 | } elseif (CollectionHelper::isAtomic($mapping['strategy']) && $this->uow->isCollectionScheduledForDeletion($new)) { |
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| 182 | $updateData['$unset'][$mapping['name']] = true; |
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| 183 | $this->uow->unscheduleCollectionDeletion($new); |
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| 184 | } elseif (CollectionHelper::isAtomic($mapping['strategy']) && $this->uow->isCollectionScheduledForDeletion($old)) { |
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| 185 | $updateData['$unset'][$mapping['name']] = true; |
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| 186 | $this->uow->unscheduleCollectionDeletion($old); |
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| 187 | } elseif ($mapping['association'] === ClassMetadata::EMBED_MANY) { |
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| 188 | foreach ($new as $key => $embeddedDoc) { |
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| 189 | if ($this->uow->isScheduledForInsert($embeddedDoc)) { |
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| 190 | continue; |
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| 191 | } |
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| 192 | |||
| 193 | $update = $this->prepareUpdateData($embeddedDoc); |
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| 194 | foreach ($update as $cmd => $values) { |
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| 195 | foreach ($values as $name => $value) { |
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| 196 | $updateData[$cmd][$mapping['name'] . '.' . $key . '.' . $name] = $value; |
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| 197 | } |
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| 198 | } |
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| 199 | } |
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| 200 | } |
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| 201 | |||
| 202 | // @ReferenceOne |
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| 203 | } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::REFERENCE_ONE) { |
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| 204 | if (isset($new) || $mapping['nullable'] === true) { |
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| 205 | $updateData['$set'][$mapping['name']] = $new === null ? null : $this->prepareReferencedDocumentValue($mapping, $new); |
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| 206 | } else { |
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| 207 | $updateData['$unset'][$mapping['name']] = true; |
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| 208 | } |
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| 209 | } |
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| 210 | } |
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| 211 | // collections that aren't dirty but could be subject to update are |
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| 212 | // excluded from change set, let's go through them now |
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| 213 | foreach ($this->uow->getScheduledCollections($document) as $coll) { |
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| 214 | $mapping = $coll->getMapping(); |
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| 215 | if (CollectionHelper::isAtomic($mapping['strategy']) && $this->uow->isCollectionScheduledForUpdate($coll)) { |
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| 216 | $updateData['$set'][$mapping['name']] = $this->prepareAssociatedCollectionValue($coll, true); |
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| 217 | } elseif (CollectionHelper::isAtomic($mapping['strategy']) && $this->uow->isCollectionScheduledForDeletion($coll)) { |
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| 218 | $updateData['$unset'][$mapping['name']] = true; |
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| 219 | $this->uow->unscheduleCollectionDeletion($coll); |
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| 220 | } |
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| 221 | // @ReferenceMany is handled by CollectionPersister |
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| 222 | } |
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| 223 | |||
| 224 | return $updateData; |
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| 225 | } |
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| 226 | |||
| 227 | /** |
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| 228 | * Prepares the update query to upsert a given document object in mongodb. |
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| 229 | * |
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| 230 | * @param object $document |
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| 231 | * |
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| 232 | * @return array $updateData |
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| 233 | */ |
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| 234 | 9 | public function prepareUpsertData($document) |
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| 235 | { |
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| 236 | 9 | $class = $this->dm->getClassMetadata(get_class($document)); |
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| 237 | 9 | $changeset = $this->uow->getDocumentChangeSet($document); |
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| 238 | |||
| 239 | 9 | $updateData = []; |
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| 240 | 9 | foreach ($changeset as $fieldName => $change) { |
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| 241 | 9 | $mapping = $class->fieldMappings[$fieldName]; |
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| 242 | |||
| 243 | 9 | [$old, $new] = $change; |
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| 244 | |||
| 245 | // Scalar fields |
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| 246 | 9 | if (! isset($mapping['association'])) { |
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| 247 | 9 | if ($new !== null) { |
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| 248 | 9 | if (empty($mapping['id']) && isset($mapping['strategy']) && $mapping['strategy'] === ClassMetadata::STORAGE_STRATEGY_INCREMENT) { |
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| 249 | $operator = '$inc'; |
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| 250 | $value = Type::getType($mapping['type'])->convertToDatabaseValue($new - $old); |
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| 251 | } else { |
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| 252 | 9 | $operator = '$set'; |
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| 253 | 9 | $value = Type::getType($mapping['type'])->convertToDatabaseValue($new); |
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| 254 | } |
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| 255 | |||
| 256 | 9 | $updateData[$operator][$mapping['name']] = $value; |
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| 257 | } elseif ($mapping['nullable'] === true) { |
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| 258 | 9 | $updateData['$setOnInsert'][$mapping['name']] = null; |
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| 259 | } |
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| 260 | |||
| 261 | // @EmbedOne |
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| 262 | 3 | } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::EMBED_ONE) { |
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| 263 | // If we don't have a new value then do nothing on upsert |
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| 264 | // If we have a new embedded document then lets set the whole thing |
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| 265 | if ($new && $this->uow->isScheduledForInsert($new)) { |
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| 266 | $updateData['$set'][$mapping['name']] = $this->prepareEmbeddedDocumentValue($mapping, $new); |
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| 267 | } elseif ($new) { |
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| 268 | // Update existing embedded document |
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| 269 | $update = $this->prepareUpsertData($new); |
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| 270 | foreach ($update as $cmd => $values) { |
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| 271 | foreach ($values as $key => $value) { |
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| 272 | $updateData[$cmd][$mapping['name'] . '.' . $key] = $value; |
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| 273 | } |
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| 274 | } |
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| 275 | } |
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| 276 | |||
| 277 | // @ReferenceOne |
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| 278 | 3 | } elseif (isset($mapping['association']) && $mapping['association'] === ClassMetadata::REFERENCE_ONE) { |
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| 279 | 1 | if (isset($new) || $mapping['nullable'] === true) { |
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| 280 | 1 | $updateData['$set'][$mapping['name']] = $new === null ? null : $this->prepareReferencedDocumentValue($mapping, $new); |
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| 281 | } |
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| 282 | |||
| 283 | // @ReferenceMany, @EmbedMany |
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| 284 | 2 | } elseif ($mapping['type'] === ClassMetadata::MANY && ! $mapping['isInverseSide'] |
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| 285 | 2 | && $new instanceof PersistentCollectionInterface && $new->isDirty() |
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| 286 | 2 | && CollectionHelper::isAtomic($mapping['strategy'])) { |
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| 287 | $updateData['$set'][$mapping['name']] = $this->prepareAssociatedCollectionValue($new, true); |
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| 288 | } |
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| 289 | // @EmbedMany and @ReferenceMany are handled by CollectionPersister |
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| 290 | } |
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| 291 | |||
| 292 | // add discriminator if the class has one |
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| 293 | 9 | if (isset($class->discriminatorField)) { |
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| 294 | $discriminatorValue = $class->discriminatorValue; |
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| 295 | |||
| 296 | if ($discriminatorValue === null) { |
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| 297 | if (! empty($class->discriminatorMap)) { |
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| 298 | throw MappingException::unlistedClassInDiscriminatorMap($class->name); |
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| 299 | } |
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| 300 | |||
| 301 | $discriminatorValue = $class->name; |
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| 302 | } |
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| 303 | |||
| 304 | $updateData['$set'][$class->discriminatorField] = $discriminatorValue; |
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| 305 | } |
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| 306 | |||
| 307 | 9 | return $updateData; |
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| 308 | } |
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| 309 | |||
| 310 | /** |
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| 311 | * Returns the reference representation to be stored in MongoDB. |
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| 312 | * |
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| 313 | * If the document does not have an identifier and the mapping calls for a |
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| 314 | * simple reference, null may be returned. |
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| 315 | * |
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| 316 | * @param array $referenceMapping |
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| 317 | * @param object $document |
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| 318 | * |
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| 319 | * @return array|null |
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| 320 | */ |
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| 321 | 15 | public function prepareReferencedDocumentValue(array $referenceMapping, $document) |
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| 325 | |||
| 326 | /** |
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| 327 | * Returns the embedded document to be stored in MongoDB. |
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| 328 | * |
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| 329 | * The return value will usually be an associative array with string keys |
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| 330 | * corresponding to field names on the embedded document. An object may be |
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| 331 | * returned if the document is empty, to ensure that a BSON object will be |
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| 332 | * stored in lieu of an array. |
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| 333 | * |
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| 334 | * If $includeNestedCollections is true, nested collections will be included |
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| 335 | * in this prepared value and the option will cascade to all embedded |
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| 336 | * associations. If any nested PersistentCollections (embed or reference) |
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| 337 | * within this value were previously scheduled for deletion or update, they |
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| 338 | * will also be unscheduled. |
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| 339 | * |
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| 340 | * @param array $embeddedMapping |
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| 341 | * @param object $embeddedDocument |
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| 342 | * @param bool $includeNestedCollections |
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| 343 | * |
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| 344 | * @return array|object |
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| 345 | * |
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| 346 | * @throws UnexpectedValueException If an unsupported associating mapping is found. |
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| 347 | */ |
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| 348 | 10 | public function prepareEmbeddedDocumentValue(array $embeddedMapping, $embeddedDocument, $includeNestedCollections = false) |
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| 349 | { |
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| 350 | 10 | $embeddedDocumentValue = []; |
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| 351 | 10 | $class = $this->dm->getClassMetadata(get_class($embeddedDocument)); |
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| 352 | |||
| 353 | 10 | foreach ($class->fieldMappings as $mapping) { |
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| 354 | // Skip notSaved fields |
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| 355 | 10 | if (! empty($mapping['notSaved'])) { |
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| 356 | continue; |
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| 357 | } |
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| 358 | |||
| 359 | // Inline ClassMetadata::getFieldValue() |
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| 360 | 10 | $rawValue = $class->reflFields[$mapping['fieldName']]->getValue($embeddedDocument); |
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| 361 | |||
| 362 | 10 | $value = null; |
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| 363 | |||
| 364 | 10 | if ($rawValue !== null) { |
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| 365 | 10 | switch ($mapping['association'] ?? null) { |
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| 366 | // @Field, @String, @Date, etc. |
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| 367 | case null: |
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| 368 | 10 | $value = Type::getType($mapping['type'])->convertToDatabaseValue($rawValue); |
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| 369 | 10 | break; |
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| 370 | |||
| 371 | case ClassMetadata::EMBED_ONE: |
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| 372 | case ClassMetadata::REFERENCE_ONE: |
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| 373 | // Nested collections should only be included for embedded relationships |
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| 374 | $value = $this->prepareAssociatedDocumentValue($mapping, $rawValue, $includeNestedCollections && isset($mapping['embedded'])); |
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| 375 | break; |
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| 376 | |||
| 377 | case ClassMetadata::EMBED_MANY: |
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| 378 | case ClassMetadata::REFERENCE_MANY: |
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| 379 | // Skip PersistentCollections already scheduled for deletion |
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| 380 | if (! $includeNestedCollections && $rawValue instanceof PersistentCollectionInterface |
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| 381 | && $this->uow->isCollectionScheduledForDeletion($rawValue)) { |
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| 382 | break; |
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| 383 | } |
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| 384 | |||
| 385 | $value = $this->prepareAssociatedCollectionValue($rawValue, $includeNestedCollections); |
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| 386 | break; |
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| 387 | |||
| 388 | default: |
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| 389 | throw new UnexpectedValueException('Unsupported mapping association: ' . $mapping['association']); |
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| 390 | } |
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| 391 | } |
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| 392 | |||
| 393 | // Omit non-nullable fields that would have a null value |
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| 394 | 10 | if ($value === null && $mapping['nullable'] === false) { |
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| 395 | 2 | continue; |
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| 396 | } |
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| 397 | |||
| 398 | 10 | $embeddedDocumentValue[$mapping['name']] = $value; |
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| 399 | } |
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| 400 | |||
| 401 | /* Add a discriminator value if the embedded document is not mapped |
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| 402 | * explicitly to a targetDocument class. |
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| 403 | */ |
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| 404 | 10 | if (! isset($embeddedMapping['targetDocument'])) { |
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| 405 | 4 | $discriminatorField = $embeddedMapping['discriminatorField']; |
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| 406 | 4 | if (! empty($embeddedMapping['discriminatorMap'])) { |
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| 407 | 2 | $discriminatorValue = array_search($class->name, $embeddedMapping['discriminatorMap']); |
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| 408 | |||
| 409 | 2 | if ($discriminatorValue === false) { |
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| 410 | 2 | throw MappingException::unlistedClassInDiscriminatorMap($class->name); |
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| 411 | } |
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| 412 | } else { |
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| 413 | 2 | $discriminatorValue = $class->name; |
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| 414 | } |
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| 415 | |||
| 416 | 3 | $embeddedDocumentValue[$discriminatorField] = $discriminatorValue; |
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| 417 | } |
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| 418 | |||
| 419 | /* If the class has a discriminator (field and value), use it. A child |
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| 420 | * class that is not defined in the discriminator map may only have a |
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| 421 | * discriminator field and no value, so default to the full class name. |
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| 422 | */ |
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| 423 | 9 | if (isset($class->discriminatorField)) { |
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| 424 | 4 | $discriminatorValue = $class->discriminatorValue; |
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| 425 | |||
| 426 | 4 | if ($discriminatorValue === null) { |
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| 427 | 4 | if (! empty($class->discriminatorMap)) { |
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| 428 | 4 | throw MappingException::unlistedClassInDiscriminatorMap($class->name); |
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| 429 | } |
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| 430 | |||
| 431 | $discriminatorValue = $class->name; |
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| 432 | } |
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| 433 | |||
| 434 | 2 | $embeddedDocumentValue[$class->discriminatorField] = $discriminatorValue; |
|
| 435 | } |
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| 436 | |||
| 437 | // Ensure empty embedded documents are stored as BSON objects |
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| 438 | 7 | if (empty($embeddedDocumentValue)) { |
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| 439 | return (object) $embeddedDocumentValue; |
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| 440 | } |
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| 441 | |||
| 442 | /* @todo Consider always casting the return value to an object, or |
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| 443 | * building $embeddedDocumentValue as an object instead of an array, to |
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| 444 | * handle the edge case where all database field names are sequential, |
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| 445 | * numeric keys. |
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| 446 | */ |
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| 447 | 7 | return $embeddedDocumentValue; |
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| 448 | } |
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| 449 | |||
| 450 | /** |
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| 451 | * Returns the embedded document or reference representation to be stored. |
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| 452 | * |
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| 453 | * @param array $mapping |
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| 454 | * @param object $document |
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| 455 | * @param bool $includeNestedCollections |
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| 456 | * |
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| 457 | * @return array|object|null |
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| 458 | * |
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| 459 | * @throws InvalidArgumentException If the mapping is neither embedded nor reference. |
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| 460 | */ |
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| 461 | public function prepareAssociatedDocumentValue(array $mapping, $document, $includeNestedCollections = false) |
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| 462 | { |
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| 463 | if (isset($mapping['embedded'])) { |
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| 464 | return $this->prepareEmbeddedDocumentValue($mapping, $document, $includeNestedCollections); |
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| 465 | } |
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| 466 | |||
| 467 | if (isset($mapping['reference'])) { |
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| 468 | return $this->prepareReferencedDocumentValue($mapping, $document); |
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| 469 | } |
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| 470 | |||
| 471 | throw new InvalidArgumentException('Mapping is neither embedded nor reference.'); |
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| 472 | } |
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| 473 | |||
| 474 | /** |
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| 475 | * Returns the collection representation to be stored and unschedules it afterwards. |
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| 476 | * |
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| 477 | * @param bool $includeNestedCollections |
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| 478 | * |
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| 479 | * @return array |
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| 480 | */ |
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| 481 | 8 | public function prepareAssociatedCollectionValue(PersistentCollectionInterface $coll, $includeNestedCollections = false) |
|
| 503 | } |
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| 504 |
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This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.