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Implements custom mongodb mapping converter (#81)
Signed-off-by: Mohammad Ghazanfar Ali Danish <[email protected]>
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6 changes: 6 additions & 0 deletions
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basyx.aasrepository/basyx.aasrepository-backend-mongodb/src/test/resources/DummyAas.json
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,6 @@ | ||
| { | ||
| "modelType": "AssetAdministrationShell", | ||
| "assetInformation": null, | ||
| "id": "dummyAAS", | ||
| "idShort": "dummyAASIdShort" | ||
| } |
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103 changes: 103 additions & 0 deletions
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...g/eclipse/digitaltwin/basyx/common/mongocore/CustomIdentifiableMappingMongoConverter.java
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| /******************************************************************************* | ||
| * Copyright (C) 2023 the Eclipse BaSyx Authors | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining | ||
| * a copy of this software and associated documentation files (the | ||
| * "Software"), to deal in the Software without restriction, including | ||
| * without limitation the rights to use, copy, modify, merge, publish, | ||
| * distribute, sublicense, and/or sell copies of the Software, and to | ||
| * permit persons to whom the Software is furnished to do so, subject to | ||
| * the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be | ||
| * included in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | ||
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | ||
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | ||
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE | ||
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION | ||
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION | ||
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
| * | ||
| * SPDX-License-Identifier: MIT | ||
| ******************************************************************************/ | ||
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| package org.eclipse.digitaltwin.basyx.common.mongocore; | ||
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| import java.io.IOException; | ||
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| import org.bson.Document; | ||
| import org.bson.conversions.Bson; | ||
| import org.eclipse.digitaltwin.aas4j.v3.model.Identifiable; | ||
| import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty; | ||
| import org.springframework.data.mongodb.MongoDatabaseFactory; | ||
| import org.springframework.data.mongodb.core.convert.DefaultDbRefResolver; | ||
| import org.springframework.data.mongodb.core.convert.MappingMongoConverter; | ||
| import org.springframework.data.mongodb.core.mapping.MongoMappingContext; | ||
| import org.springframework.stereotype.Component; | ||
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| import com.fasterxml.jackson.core.JsonProcessingException; | ||
| import com.fasterxml.jackson.databind.ObjectMapper; | ||
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| /** | ||
| * Custom abstract mongodb mapping converter for applying mixins to the | ||
| * metamodels for conformance to the specification. | ||
| * | ||
| * @author danish | ||
| * | ||
| */ | ||
| @Component | ||
| @ConditionalOnProperty(prefix = "basyx", name = "backend", havingValue = "MongoDB") | ||
| public class CustomIdentifiableMappingMongoConverter extends MappingMongoConverter { | ||
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| private static final String MONGODB_ID_KEY = "_id"; | ||
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| private ObjectMapper mapper; | ||
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| public CustomIdentifiableMappingMongoConverter(MongoDatabaseFactory databaseFactory, MongoMappingContext mappingContext, | ||
| ObjectMapper mapper) { | ||
| super(new DefaultDbRefResolver(databaseFactory), mappingContext); | ||
| this.mapper = mapper; | ||
| } | ||
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| @Override | ||
| public <S> S read(Class<S> clazz, Bson source) { | ||
| Document doc = (Document) source; | ||
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| doc.remove(MONGODB_ID_KEY); | ||
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| String metamodelJson = doc.toJson(); | ||
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| return deserializeMetamodel(clazz, metamodelJson); | ||
| } | ||
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| @Override | ||
| public void write(Object source, Bson target) { | ||
| Document document = (Document) target; | ||
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| String id = ((Identifiable) source).getId(); | ||
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| String json = serializeMetamodel(source); | ||
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| document.put(MONGODB_ID_KEY, id); | ||
| document.putAll(Document.parse(json)); | ||
| } | ||
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| private String serializeMetamodel(Object source) { | ||
| try { | ||
| return mapper.writeValueAsString(source); | ||
| } catch (JsonProcessingException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
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| private <S> S deserializeMetamodel(Class<S> clazz, String string) { | ||
| try { | ||
| return mapper.readValue(string, clazz); | ||
| } catch (IOException e) { | ||
| throw new RuntimeException(string, e); | ||
| } | ||
| } | ||
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| } |
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