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{EntityMetadata} from \"../../metadata/EntityMetadata\";\nimport {ObjectLiteral} from \"../../common/ObjectLiteral\";\n\n/**\n * Transforms plain old javascript object\n * Entity is constructed based on its entity metadata.\n */\nexport class PlainObjectToNewEntityTransformer {\n\n // -------------------------------------------------------------------------\n // Public Methods\n // -------------------------------------------------------------------------\n\n transform<T>(newEntity: T, object: ObjectLiteral, metadata: EntityMetadata, getLazyRelationsPromiseValue: boolean = false): T {\n // console.log(\"groupAndTransform entity:\", newEntity);\n // console.log(\"groupAndTransform object:\", object);\n this.groupAndTransform(newEntity, object, metadata, getLazyRelationsPromiseValue);\n // console.log(\"result:\", newEntity);\n return newEntity;\n }\n\n // -------------------------------------------------------------------------\n // Private Methods\n // -------------------------------------------------------------------------\n\n /**\n * Since db returns a duplicated rows of the data where accuracies of the same object can be duplicated\n * we need to group our result and we must have some unique id (primary key in our case)\n */\n private groupAndTransform(entity: ObjectLiteral, object: ObjectLiteral, metadata: EntityMetadata, getLazyRelationsPromiseValue: boolean = false): void {\n\n // console.log(\"groupAndTransform entity:\", entity);\n // console.log(\"groupAndTransform object:\", object);\n\n // copy regular column properties from the given object\n metadata.nonVirtualColumns.forEach(column => {\n const objectColumnValue = column.getEntityValue(object);\n if (objectColumnValue !== undefined)\n column.setEntityValue(entity, objectColumnValue);\n });\n\n // // copy relation properties from the given object\n if (metadata.relations.length) {\n metadata.relations.forEach(relation => {\n\n let entityRelatedValue = relation.getEntityValue(entity);\n const objectRelatedValue = relation.getEntityValue(object, getLazyRelationsPromiseValue);\n if (objectRelatedValue === undefined)\n return;\n\n if (relation.isOneToMany || relation.isManyToMany) {\n if (!(objectRelatedValue instanceof Array))\n return;\n\n if (!entityRelatedValue) {\n entityRelatedValue = [];\n relation.setEntityValue(entity, entityRelatedValue);\n }\n\n objectRelatedValue.forEach(objectRelatedValueItem => {\n\n // check if we have this item from the merging object in the original entity we merge into\n let objectRelatedValueEntity = (entityRelatedValue as any[]).find(entityRelatedValueItem => {\n return relation.inverseEntityMetadata.compareEntities(objectRelatedValueItem, entityRelatedValueItem);\n });\n\n // if such item already exist then merge new data into it, if its not we create a new entity and merge it into the array\n if (!objectRelatedValueEntity) {\n objectRelatedValueEntity = relation.inverseEntityMetadata.create();\n entityRelatedValue.push(objectRelatedValueEntity);\n }\n\n this.groupAndTransform(objectRelatedValueEntity, objectRelatedValueItem, relation.inverseEntityMetadata, getLazyRelationsPromiseValue);\n });\n\n } else {\n\n // if related object isn't an object (direct relation id for example)\n // we just set it to the entity relation, we don't need anything more from it\n // however we do it only if original entity does not have this relation set to object\n // to prevent full overriding of objects\n if (!(objectRelatedValue instanceof Object)) {\n if (!(entityRelatedValue instanceof Object))\n relation.setEntityValue(entity, objectRelatedValue);\n return;\n }\n\n if (!entityRelatedValue) {\n entityRelatedValue = relation.inverseEntityMetadata.create();\n relation.setEntityValue(entity, entityRelatedValue);\n }\n\n this.groupAndTransform(entityRelatedValue, objectRelatedValue, relation.inverseEntityMetadata, getLazyRelationsPromiseValue);\n }\n });\n }\n }\n\n}"],"sourceRoot":"../.."}
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