2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021-2022 Nordix Foundation
4 * Modifications Copyright (C) 2021 Pantheon.tech
5 * Modifications Copyright (C) 2020-2022 Bell Canada.
6 * Modifications Copyright (C) 2022 TechMahindra Ltd.
7 * ================================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
20 * SPDX-License-Identifier: Apache-2.0
21 * ============LICENSE_END=========================================================
24 package org.onap.cps.spi.impl;
26 import com.google.common.collect.ImmutableSet;
27 import com.google.common.collect.ImmutableSet.Builder;
28 import java.io.Serializable;
29 import java.util.ArrayList;
30 import java.util.Collection;
31 import java.util.Collections;
32 import java.util.HashMap;
33 import java.util.HashSet;
34 import java.util.List;
37 import java.util.regex.Matcher;
38 import java.util.regex.Pattern;
39 import java.util.stream.Collectors;
40 import javax.transaction.Transactional;
41 import lombok.RequiredArgsConstructor;
42 import lombok.extern.slf4j.Slf4j;
43 import org.hibernate.StaleStateException;
44 import org.onap.cps.cpspath.parser.CpsPathQuery;
45 import org.onap.cps.cpspath.parser.CpsPathUtil;
46 import org.onap.cps.cpspath.parser.PathParsingException;
47 import org.onap.cps.spi.CpsDataPersistenceService;
48 import org.onap.cps.spi.FetchDescendantsOption;
49 import org.onap.cps.spi.entities.AnchorEntity;
50 import org.onap.cps.spi.entities.DataspaceEntity;
51 import org.onap.cps.spi.entities.FragmentEntity;
52 import org.onap.cps.spi.entities.FragmentEntityArranger;
53 import org.onap.cps.spi.entities.FragmentExtract;
54 import org.onap.cps.spi.exceptions.AlreadyDefinedException;
55 import org.onap.cps.spi.exceptions.AlreadyDefinedExceptionBatch;
56 import org.onap.cps.spi.exceptions.ConcurrencyException;
57 import org.onap.cps.spi.exceptions.CpsAdminException;
58 import org.onap.cps.spi.exceptions.CpsPathException;
59 import org.onap.cps.spi.exceptions.DataNodeNotFoundException;
60 import org.onap.cps.spi.model.DataNode;
61 import org.onap.cps.spi.model.DataNodeBuilder;
62 import org.onap.cps.spi.repository.AnchorRepository;
63 import org.onap.cps.spi.repository.DataspaceRepository;
64 import org.onap.cps.spi.repository.FragmentQueryBuilder;
65 import org.onap.cps.spi.repository.FragmentRepository;
66 import org.onap.cps.spi.utils.SessionManager;
67 import org.onap.cps.utils.JsonObjectMapper;
68 import org.springframework.dao.DataIntegrityViolationException;
69 import org.springframework.stereotype.Service;
73 @RequiredArgsConstructor
74 public class CpsDataPersistenceServiceImpl implements CpsDataPersistenceService {
76 private final DataspaceRepository dataspaceRepository;
77 private final AnchorRepository anchorRepository;
78 private final FragmentRepository fragmentRepository;
79 private final JsonObjectMapper jsonObjectMapper;
80 private final SessionManager sessionManager;
82 private static final String REG_EX_FOR_OPTIONAL_LIST_INDEX = "(\\[@[\\s\\S]+?]){0,1})";
85 public void addChildDataNode(final String dataspaceName, final String anchorName, final String parentNodeXpath,
86 final DataNode newChildDataNode) {
87 addNewChildDataNode(dataspaceName, anchorName, parentNodeXpath, newChildDataNode);
91 public void addChildDataNodes(final String dataspaceName, final String anchorName,
92 final String parentNodeXpath, final Collection<DataNode> dataNodes) {
93 addChildrenDataNodes(dataspaceName, anchorName, parentNodeXpath, dataNodes);
97 public void addListElements(final String dataspaceName, final String anchorName, final String parentNodeXpath,
98 final Collection<DataNode> newListElements) {
99 addChildrenDataNodes(dataspaceName, anchorName, parentNodeXpath, newListElements);
103 public void addMultipleLists(final String dataspaceName, final String anchorName, final String parentNodeXpath,
104 final Collection<Collection<DataNode>> newLists) {
105 final Collection<String> failedXpaths = new HashSet<>();
106 newLists.forEach(newList -> {
108 addChildrenDataNodes(dataspaceName, anchorName, parentNodeXpath, newList);
109 } catch (final AlreadyDefinedExceptionBatch e) {
110 failedXpaths.addAll(e.getAlreadyDefinedXpaths());
114 if (!failedXpaths.isEmpty()) {
115 throw new AlreadyDefinedExceptionBatch(failedXpaths);
120 private void addNewChildDataNode(final String dataspaceName, final String anchorName,
121 final String parentNodeXpath, final DataNode newChild) {
122 final FragmentEntity parentFragmentEntity =
123 getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, parentNodeXpath);
124 final FragmentEntity newChildAsFragmentEntity =
125 convertToFragmentWithAllDescendants(parentFragmentEntity.getDataspace(),
126 parentFragmentEntity.getAnchor(), newChild);
127 newChildAsFragmentEntity.setParentId(parentFragmentEntity.getId());
129 fragmentRepository.save(newChildAsFragmentEntity);
130 } catch (final DataIntegrityViolationException e) {
131 throw AlreadyDefinedException.forDataNode(newChild.getXpath(), anchorName, e);
136 private void addChildrenDataNodes(final String dataspaceName, final String anchorName, final String parentNodeXpath,
137 final Collection<DataNode> newChildren) {
138 final FragmentEntity parentFragmentEntity =
139 getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, parentNodeXpath);
140 final List<FragmentEntity> fragmentEntities = new ArrayList<>(newChildren.size());
142 newChildren.forEach(newChildAsDataNode -> {
143 final FragmentEntity newChildAsFragmentEntity =
144 convertToFragmentWithAllDescendants(parentFragmentEntity.getDataspace(),
145 parentFragmentEntity.getAnchor(), newChildAsDataNode);
146 newChildAsFragmentEntity.setParentId(parentFragmentEntity.getId());
147 fragmentEntities.add(newChildAsFragmentEntity);
149 fragmentRepository.saveAll(fragmentEntities);
150 } catch (final DataIntegrityViolationException e) {
151 log.warn("Exception occurred : {} , While saving : {} children, retrying using individual save operations",
152 e, fragmentEntities.size());
153 retrySavingEachChildIndividually(dataspaceName, anchorName, parentNodeXpath, newChildren);
157 private void retrySavingEachChildIndividually(final String dataspaceName, final String anchorName,
158 final String parentNodeXpath,
159 final Collection<DataNode> newChildren) {
160 final Collection<String> failedXpaths = new HashSet<>();
161 for (final DataNode newChild : newChildren) {
163 addNewChildDataNode(dataspaceName, anchorName, parentNodeXpath, newChild);
164 } catch (final AlreadyDefinedException e) {
165 failedXpaths.add(newChild.getXpath());
168 if (!failedXpaths.isEmpty()) {
169 throw new AlreadyDefinedExceptionBatch(failedXpaths);
174 public void storeDataNode(final String dataspaceName, final String anchorName, final DataNode dataNode) {
175 storeDataNodes(dataspaceName, anchorName, Collections.singletonList(dataNode));
179 public void storeDataNodes(final String dataspaceName, final String anchorName,
180 final Collection<DataNode> dataNodes) {
181 final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
182 final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
183 final List<FragmentEntity> fragmentEntities = new ArrayList<>(dataNodes.size());
185 for (final DataNode dataNode: dataNodes) {
186 final FragmentEntity fragmentEntity = convertToFragmentWithAllDescendants(dataspaceEntity, anchorEntity,
188 fragmentEntities.add(fragmentEntity);
190 fragmentRepository.saveAll(fragmentEntities);
191 } catch (final DataIntegrityViolationException exception) {
192 log.warn("Exception occurred : {} , While saving : {} data nodes, Retrying saving data nodes individually",
193 exception, dataNodes.size());
194 storeDataNodesIndividually(dataspaceName, anchorName, dataNodes);
198 private void storeDataNodesIndividually(final String dataspaceName, final String anchorName,
199 final Collection<DataNode> dataNodes) {
200 final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
201 final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
202 final Collection<String> failedXpaths = new HashSet<>();
203 for (final DataNode dataNode: dataNodes) {
205 final FragmentEntity fragmentEntity = convertToFragmentWithAllDescendants(dataspaceEntity, anchorEntity,
207 fragmentRepository.save(fragmentEntity);
208 } catch (final DataIntegrityViolationException e) {
209 failedXpaths.add(dataNode.getXpath());
212 if (!failedXpaths.isEmpty()) {
213 throw new AlreadyDefinedExceptionBatch(failedXpaths);
218 * Convert DataNode object into Fragment and places the result in the fragments placeholder. Performs same action
219 * for all DataNode children recursively.
221 * @param dataspaceEntity dataspace
222 * @param anchorEntity anchorEntity
223 * @param dataNodeToBeConverted dataNode
224 * @return a Fragment built from current DataNode
226 private FragmentEntity convertToFragmentWithAllDescendants(final DataspaceEntity dataspaceEntity,
227 final AnchorEntity anchorEntity,
228 final DataNode dataNodeToBeConverted) {
229 final FragmentEntity parentFragment = toFragmentEntity(dataspaceEntity, anchorEntity, dataNodeToBeConverted);
230 final Builder<FragmentEntity> childFragmentsImmutableSetBuilder = ImmutableSet.builder();
231 for (final DataNode childDataNode : dataNodeToBeConverted.getChildDataNodes()) {
232 final FragmentEntity childFragment =
233 convertToFragmentWithAllDescendants(parentFragment.getDataspace(), parentFragment.getAnchor(),
235 childFragmentsImmutableSetBuilder.add(childFragment);
237 parentFragment.setChildFragments(childFragmentsImmutableSetBuilder.build());
238 return parentFragment;
241 private FragmentEntity toFragmentEntity(final DataspaceEntity dataspaceEntity,
242 final AnchorEntity anchorEntity, final DataNode dataNode) {
243 return FragmentEntity.builder()
244 .dataspace(dataspaceEntity)
245 .anchor(anchorEntity)
246 .xpath(dataNode.getXpath())
247 .attributes(jsonObjectMapper.asJsonString(dataNode.getLeaves()))
252 public DataNode getDataNode(final String dataspaceName, final String anchorName, final String xpath,
253 final FetchDescendantsOption fetchDescendantsOption) {
254 final FragmentEntity fragmentEntity = getFragmentByXpath(dataspaceName, anchorName, xpath,
255 fetchDescendantsOption);
256 return toDataNode(fragmentEntity, fetchDescendantsOption);
260 public Collection<DataNode> getDataNodes(final String dataspaceName, final String anchorName,
261 final Collection<String> xpaths,
262 final FetchDescendantsOption fetchDescendantsOption) {
263 final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
264 final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
265 final List<FragmentEntity> fragmentEntities =
266 fragmentRepository.findByAnchorAndMultipleCpsPaths(anchorEntity.getId(), xpaths);
267 final Collection<DataNode> dataNodesCollection = new ArrayList<>(fragmentEntities.size());
268 for (final FragmentEntity fragmentEntity : fragmentEntities) {
269 dataNodesCollection.add(toDataNode(fragmentEntity, fetchDescendantsOption));
271 return dataNodesCollection;
274 private FragmentEntity getFragmentWithoutDescendantsByXpath(final String dataspaceName,
275 final String anchorName,
276 final String xpath) {
277 return getFragmentByXpath(dataspaceName, anchorName, xpath, FetchDescendantsOption.OMIT_DESCENDANTS);
280 private FragmentEntity getFragmentByXpath(final String dataspaceName, final String anchorName,
281 final String xpath, final FetchDescendantsOption fetchDescendantsOption) {
282 final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
283 final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
284 final FragmentEntity fragmentEntity;
285 if (isRootXpath(xpath)) {
286 final List<FragmentExtract> fragmentExtracts = fragmentRepository.getTopLevelFragments(dataspaceEntity,
288 fragmentEntity = FragmentEntityArranger.toFragmentEntityTrees(anchorEntity, fragmentExtracts)
289 .stream().findFirst().orElse(null);
291 final String normalizedXpath = getNormalizedXpath(xpath);
292 if (FetchDescendantsOption.OMIT_DESCENDANTS.equals(fetchDescendantsOption)) {
294 fragmentRepository.getByDataspaceAndAnchorAndXpath(dataspaceEntity, anchorEntity, normalizedXpath);
296 fragmentEntity = buildFragmentEntitiesFromFragmentExtracts(anchorEntity, normalizedXpath)
297 .stream().findFirst().orElse(null);
300 if (fragmentEntity == null) {
301 throw new DataNodeNotFoundException(dataspaceEntity.getName(), anchorEntity.getName(), xpath);
303 return fragmentEntity;
307 private Collection<FragmentEntity> buildFragmentEntitiesFromFragmentExtracts(final AnchorEntity anchorEntity,
308 final String normalizedXpath) {
309 final List<FragmentExtract> fragmentExtracts =
310 fragmentRepository.findByAnchorIdAndParentXpath(anchorEntity.getId(), normalizedXpath);
311 log.debug("Fetched {} fragment entities by anchor {} and cps path {}.",
312 fragmentExtracts.size(), anchorEntity.getName(), normalizedXpath);
313 return FragmentEntityArranger.toFragmentEntityTrees(anchorEntity, fragmentExtracts);
318 public List<DataNode> queryDataNodes(final String dataspaceName, final String anchorName, final String cpsPath,
319 final FetchDescendantsOption fetchDescendantsOption) {
320 final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
321 final AnchorEntity anchorEntity = anchorRepository.getByDataspaceAndName(dataspaceEntity, anchorName);
322 final CpsPathQuery cpsPathQuery;
324 cpsPathQuery = CpsPathUtil.getCpsPathQuery(cpsPath);
325 } catch (final PathParsingException e) {
326 throw new CpsPathException(e.getMessage());
329 Collection<FragmentEntity> fragmentEntities;
330 if (canUseRegexQuickFind(fetchDescendantsOption, cpsPathQuery)) {
331 return getDataNodesUsingRegexQuickFind(fetchDescendantsOption, anchorEntity, cpsPathQuery);
333 fragmentEntities = fragmentRepository.findByAnchorAndCpsPath(anchorEntity.getId(), cpsPathQuery);
334 if (cpsPathQuery.hasAncestorAxis()) {
335 fragmentEntities = getAncestorFragmentEntities(anchorEntity.getId(), cpsPathQuery, fragmentEntities);
337 return createDataNodesFromProxiedFragmentEntities(fetchDescendantsOption, anchorEntity, fragmentEntities);
340 private static boolean canUseRegexQuickFind(final FetchDescendantsOption fetchDescendantsOption,
341 final CpsPathQuery cpsPathQuery) {
342 return fetchDescendantsOption.equals(FetchDescendantsOption.INCLUDE_ALL_DESCENDANTS)
343 && !cpsPathQuery.hasLeafConditions()
344 && !cpsPathQuery.hasTextFunctionCondition();
347 private List<DataNode> getDataNodesUsingRegexQuickFind(final FetchDescendantsOption fetchDescendantsOption,
348 final AnchorEntity anchorEntity,
349 final CpsPathQuery cpsPathQuery) {
350 Collection<FragmentEntity> fragmentEntities;
351 final String xpathRegex = FragmentQueryBuilder.getXpathSqlRegex(cpsPathQuery, true);
352 final List<FragmentExtract> fragmentExtracts =
353 fragmentRepository.quickFindWithDescendants(anchorEntity.getId(), xpathRegex);
354 fragmentEntities = FragmentEntityArranger.toFragmentEntityTrees(anchorEntity, fragmentExtracts);
355 if (cpsPathQuery.hasAncestorAxis()) {
356 fragmentEntities = getAncestorFragmentEntities(anchorEntity.getId(), cpsPathQuery, fragmentEntities);
358 return createDataNodesFromFragmentEntities(fetchDescendantsOption, fragmentEntities);
361 private Collection<FragmentEntity> getAncestorFragmentEntities(final int anchorId,
362 final CpsPathQuery cpsPathQuery,
363 final Collection<FragmentEntity> fragmentEntities) {
364 final Collection<String> ancestorXpaths = processAncestorXpath(fragmentEntities, cpsPathQuery);
365 return ancestorXpaths.isEmpty() ? Collections.emptyList()
366 : fragmentRepository.findByAnchorAndMultipleCpsPaths(anchorId, ancestorXpaths);
369 private List<DataNode> createDataNodesFromProxiedFragmentEntities(
370 final FetchDescendantsOption fetchDescendantsOption,
371 final AnchorEntity anchorEntity,
372 final Collection<FragmentEntity> proxiedFragmentEntities) {
373 final List<DataNode> dataNodes = new ArrayList<>(proxiedFragmentEntities.size());
374 for (final FragmentEntity proxiedFragmentEntity : proxiedFragmentEntities) {
375 if (FetchDescendantsOption.OMIT_DESCENDANTS.equals(fetchDescendantsOption)) {
376 dataNodes.add(toDataNode(proxiedFragmentEntity, fetchDescendantsOption));
378 final String normalizedXpath = getNormalizedXpath(proxiedFragmentEntity.getXpath());
379 final Collection<FragmentEntity> unproxiedFragmentEntities =
380 buildFragmentEntitiesFromFragmentExtracts(anchorEntity, normalizedXpath);
381 for (final FragmentEntity unproxiedFragmentEntity : unproxiedFragmentEntities) {
382 dataNodes.add(toDataNode(unproxiedFragmentEntity, fetchDescendantsOption));
386 return Collections.unmodifiableList(dataNodes);
389 private List<DataNode> createDataNodesFromFragmentEntities(final FetchDescendantsOption fetchDescendantsOption,
390 final Collection<FragmentEntity> fragmentEntities) {
391 final List<DataNode> dataNodes = new ArrayList<>(fragmentEntities.size());
392 for (final FragmentEntity fragmentEntity : fragmentEntities) {
393 dataNodes.add(toDataNode(fragmentEntity, fetchDescendantsOption));
395 return Collections.unmodifiableList(dataNodes);
398 private static String getNormalizedXpath(final String xpathSource) {
399 final String normalizedXpath;
401 normalizedXpath = CpsPathUtil.getNormalizedXpath(xpathSource);
402 } catch (final PathParsingException e) {
403 throw new CpsPathException(e.getMessage());
405 return normalizedXpath;
409 public String startSession() {
410 return sessionManager.startSession();
414 public void closeSession(final String sessionId) {
415 sessionManager.closeSession(sessionId, SessionManager.WITH_COMMIT);
419 public void lockAnchor(final String sessionId, final String dataspaceName,
420 final String anchorName, final Long timeoutInMilliseconds) {
421 sessionManager.lockAnchor(sessionId, dataspaceName, anchorName, timeoutInMilliseconds);
424 private static Set<String> processAncestorXpath(final Collection<FragmentEntity> fragmentEntities,
425 final CpsPathQuery cpsPathQuery) {
426 final Set<String> ancestorXpath = new HashSet<>();
427 final Pattern pattern =
428 Pattern.compile("([\\s\\S]*\\/" + Pattern.quote(cpsPathQuery.getAncestorSchemaNodeIdentifier())
429 + REG_EX_FOR_OPTIONAL_LIST_INDEX + "\\/[\\s\\S]*");
430 for (final FragmentEntity fragmentEntity : fragmentEntities) {
431 final Matcher matcher = pattern.matcher(fragmentEntity.getXpath());
432 if (matcher.matches()) {
433 ancestorXpath.add(matcher.group(1));
436 return ancestorXpath;
439 private DataNode toDataNode(final FragmentEntity fragmentEntity,
440 final FetchDescendantsOption fetchDescendantsOption) {
441 final List<DataNode> childDataNodes = getChildDataNodes(fragmentEntity, fetchDescendantsOption);
442 Map<String, Serializable> leaves = new HashMap<>();
443 if (fragmentEntity.getAttributes() != null) {
444 leaves = jsonObjectMapper.convertJsonString(fragmentEntity.getAttributes(), Map.class);
446 return new DataNodeBuilder()
447 .withXpath(fragmentEntity.getXpath())
449 .withChildDataNodes(childDataNodes).build();
452 private List<DataNode> getChildDataNodes(final FragmentEntity fragmentEntity,
453 final FetchDescendantsOption fetchDescendantsOption) {
454 if (fetchDescendantsOption.hasNext()) {
455 return fragmentEntity.getChildFragments().stream()
456 .map(childFragmentEntity -> toDataNode(childFragmentEntity, fetchDescendantsOption.next()))
457 .collect(Collectors.toList());
459 return Collections.emptyList();
463 public void updateDataLeaves(final String dataspaceName, final String anchorName, final String xpath,
464 final Map<String, Serializable> leaves) {
465 final FragmentEntity fragmentEntity = getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, xpath);
466 fragmentEntity.setAttributes(jsonObjectMapper.asJsonString(leaves));
467 fragmentRepository.save(fragmentEntity);
471 public void updateDataNodeAndDescendants(final String dataspaceName, final String anchorName,
472 final DataNode dataNode) {
473 final FragmentEntity fragmentEntity =
474 getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, dataNode.getXpath());
475 updateFragmentEntityAndDescendantsWithDataNode(fragmentEntity, dataNode);
477 fragmentRepository.save(fragmentEntity);
478 } catch (final StaleStateException staleStateException) {
479 throw new ConcurrencyException("Concurrent Transactions",
480 String.format("dataspace :'%s', Anchor : '%s' and xpath: '%s' is updated by another transaction.",
481 dataspaceName, anchorName, dataNode.getXpath()));
486 public void updateDataNodesAndDescendants(final String dataspaceName,
487 final String anchorName,
488 final List<DataNode> dataNodes) {
490 final Map<DataNode, FragmentEntity> dataNodeFragmentEntityMap = dataNodes.stream()
491 .collect(Collectors.toMap(
492 dataNode -> dataNode,
494 getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, dataNode.getXpath())));
495 dataNodeFragmentEntityMap.forEach(
496 (dataNode, fragmentEntity) -> updateFragmentEntityAndDescendantsWithDataNode(fragmentEntity, dataNode));
498 fragmentRepository.saveAll(dataNodeFragmentEntityMap.values());
499 } catch (final StaleStateException staleStateException) {
500 retryUpdateDataNodesIndividually(dataspaceName, anchorName, dataNodeFragmentEntityMap.values());
504 private void retryUpdateDataNodesIndividually(final String dataspaceName, final String anchorName,
505 final Collection<FragmentEntity> fragmentEntities) {
506 final Collection<String> failedXpaths = new HashSet<>();
508 fragmentEntities.forEach(dataNodeFragment -> {
510 fragmentRepository.save(dataNodeFragment);
511 } catch (final StaleStateException e) {
512 failedXpaths.add(dataNodeFragment.getXpath());
516 if (!failedXpaths.isEmpty()) {
517 final String failedXpathsConcatenated = String.join(",", failedXpaths);
518 throw new ConcurrencyException("Concurrent Transactions", String.format(
519 "DataNodes : %s in Dataspace :'%s' with Anchor : '%s' are updated by another transaction.",
520 failedXpathsConcatenated, dataspaceName, anchorName));
524 private void updateFragmentEntityAndDescendantsWithDataNode(final FragmentEntity existingFragmentEntity,
525 final DataNode newDataNode) {
527 existingFragmentEntity.setAttributes(jsonObjectMapper.asJsonString(newDataNode.getLeaves()));
529 final Map<String, FragmentEntity> existingChildrenByXpath = existingFragmentEntity.getChildFragments().stream()
530 .collect(Collectors.toMap(FragmentEntity::getXpath, childFragmentEntity -> childFragmentEntity));
532 final Collection<FragmentEntity> updatedChildFragments = new HashSet<>();
534 for (final DataNode newDataNodeChild : newDataNode.getChildDataNodes()) {
535 final FragmentEntity childFragment;
536 if (isNewDataNode(newDataNodeChild, existingChildrenByXpath)) {
537 childFragment = convertToFragmentWithAllDescendants(
538 existingFragmentEntity.getDataspace(), existingFragmentEntity.getAnchor(), newDataNodeChild);
540 childFragment = existingChildrenByXpath.get(newDataNodeChild.getXpath());
541 updateFragmentEntityAndDescendantsWithDataNode(childFragment, newDataNodeChild);
543 updatedChildFragments.add(childFragment);
546 existingFragmentEntity.getChildFragments().clear();
547 existingFragmentEntity.getChildFragments().addAll(updatedChildFragments);
552 public void replaceListContent(final String dataspaceName, final String anchorName, final String parentNodeXpath,
553 final Collection<DataNode> newListElements) {
554 final FragmentEntity parentEntity =
555 getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, parentNodeXpath);
556 final String listElementXpathPrefix = getListElementXpathPrefix(newListElements);
557 final Map<String, FragmentEntity> existingListElementFragmentEntitiesByXPath =
558 extractListElementFragmentEntitiesByXPath(parentEntity.getChildFragments(), listElementXpathPrefix);
559 deleteListElements(parentEntity.getChildFragments(), existingListElementFragmentEntitiesByXPath);
560 final Set<FragmentEntity> updatedChildFragmentEntities = new HashSet<>();
561 for (final DataNode newListElement : newListElements) {
562 final FragmentEntity existingListElementEntity =
563 existingListElementFragmentEntitiesByXPath.get(newListElement.getXpath());
564 final FragmentEntity entityToBeAdded = getFragmentForReplacement(parentEntity, newListElement,
565 existingListElementEntity);
567 updatedChildFragmentEntities.add(entityToBeAdded);
569 parentEntity.getChildFragments().addAll(updatedChildFragmentEntities);
570 fragmentRepository.save(parentEntity);
575 public void deleteDataNodes(final String dataspaceName, final String anchorName) {
576 final DataspaceEntity dataspaceEntity = dataspaceRepository.getByName(dataspaceName);
577 anchorRepository.findByDataspaceAndName(dataspaceEntity, anchorName)
579 anchorEntity -> fragmentRepository.deleteByAnchorIn(Set.of(anchorEntity)));
584 public void deleteListDataNode(final String dataspaceName, final String anchorName,
585 final String targetXpath) {
586 deleteDataNode(dataspaceName, anchorName, targetXpath, true);
591 public void deleteDataNode(final String dataspaceName, final String anchorName, final String targetXpath) {
592 deleteDataNode(dataspaceName, anchorName, targetXpath, false);
595 private void deleteDataNode(final String dataspaceName, final String anchorName, final String targetXpath,
596 final boolean onlySupportListNodeDeletion) {
597 final String parentNodeXpath;
598 FragmentEntity parentFragmentEntity = null;
599 boolean targetDeleted;
600 if (isRootXpath(targetXpath)) {
601 deleteDataNodes(dataspaceName, anchorName);
602 targetDeleted = true;
604 if (isRootContainerNodeXpath(targetXpath)) {
605 parentNodeXpath = targetXpath;
607 parentNodeXpath = CpsPathUtil.getNormalizedParentXpath(targetXpath);
609 parentFragmentEntity = getFragmentWithoutDescendantsByXpath(dataspaceName, anchorName, parentNodeXpath);
610 if (CpsPathUtil.isPathToListElement(targetXpath)) {
611 targetDeleted = deleteDataNode(parentFragmentEntity, targetXpath);
613 targetDeleted = deleteAllListElements(parentFragmentEntity, targetXpath);
614 final boolean tryToDeleteDataNode = !targetDeleted && !onlySupportListNodeDeletion;
615 if (tryToDeleteDataNode) {
616 targetDeleted = deleteDataNode(parentFragmentEntity, targetXpath);
620 if (!targetDeleted) {
621 final String additionalInformation = onlySupportListNodeDeletion
622 ? "The target is probably not a List." : "";
623 throw new DataNodeNotFoundException(parentFragmentEntity.getDataspace().getName(),
624 parentFragmentEntity.getAnchor().getName(), targetXpath, additionalInformation);
628 private boolean deleteDataNode(final FragmentEntity parentFragmentEntity, final String targetXpath) {
629 final String normalizedTargetXpath = CpsPathUtil.getNormalizedXpath(targetXpath);
630 if (parentFragmentEntity.getXpath().equals(normalizedTargetXpath)) {
631 fragmentRepository.delete(parentFragmentEntity);
634 if (parentFragmentEntity.getChildFragments()
635 .removeIf(fragment -> fragment.getXpath().equals(normalizedTargetXpath))) {
636 fragmentRepository.save(parentFragmentEntity);
642 private boolean deleteAllListElements(final FragmentEntity parentFragmentEntity, final String listXpath) {
643 final String normalizedListXpath = CpsPathUtil.getNormalizedXpath(listXpath);
644 final String deleteTargetXpathPrefix = normalizedListXpath + "[";
645 if (parentFragmentEntity.getChildFragments()
646 .removeIf(fragment -> fragment.getXpath().startsWith(deleteTargetXpathPrefix))) {
647 fragmentRepository.save(parentFragmentEntity);
653 private static void deleteListElements(
654 final Collection<FragmentEntity> fragmentEntities,
655 final Map<String, FragmentEntity> existingListElementFragmentEntitiesByXPath) {
656 fragmentEntities.removeAll(existingListElementFragmentEntitiesByXPath.values());
659 private static String getListElementXpathPrefix(final Collection<DataNode> newListElements) {
660 if (newListElements.isEmpty()) {
661 throw new CpsAdminException("Invalid list replacement",
662 "Cannot replace list elements with empty collection");
664 final String firstChildNodeXpath = newListElements.iterator().next().getXpath();
665 return firstChildNodeXpath.substring(0, firstChildNodeXpath.lastIndexOf('[') + 1);
668 private FragmentEntity getFragmentForReplacement(final FragmentEntity parentEntity,
669 final DataNode newListElement,
670 final FragmentEntity existingListElementEntity) {
671 if (existingListElementEntity == null) {
672 return convertToFragmentWithAllDescendants(
673 parentEntity.getDataspace(), parentEntity.getAnchor(), newListElement);
675 if (newListElement.getChildDataNodes().isEmpty()) {
676 copyAttributesFromNewListElement(existingListElementEntity, newListElement);
677 existingListElementEntity.getChildFragments().clear();
679 updateFragmentEntityAndDescendantsWithDataNode(existingListElementEntity, newListElement);
681 return existingListElementEntity;
684 private static boolean isNewDataNode(final DataNode replacementDataNode,
685 final Map<String, FragmentEntity> existingListElementsByXpath) {
686 return !existingListElementsByXpath.containsKey(replacementDataNode.getXpath());
689 private static boolean isRootContainerNodeXpath(final String xpath) {
690 return 0 == xpath.lastIndexOf('/');
693 private void copyAttributesFromNewListElement(final FragmentEntity existingListElementEntity,
694 final DataNode newListElement) {
695 final FragmentEntity replacementFragmentEntity =
696 FragmentEntity.builder().attributes(jsonObjectMapper.asJsonString(
697 newListElement.getLeaves())).build();
698 existingListElementEntity.setAttributes(replacementFragmentEntity.getAttributes());
701 private static Map<String, FragmentEntity> extractListElementFragmentEntitiesByXPath(
702 final Set<FragmentEntity> childEntities, final String listElementXpathPrefix) {
703 return childEntities.stream()
704 .filter(fragmentEntity -> fragmentEntity.getXpath().startsWith(listElementXpathPrefix))
705 .collect(Collectors.toMap(FragmentEntity::getXpath, fragmentEntity -> fragmentEntity));
708 private static boolean isRootXpath(final String xpath) {
709 return "/".equals(xpath) || "".equals(xpath);