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Preliminary support for case management related queries.
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162 changes: 162 additions & 0 deletions
162
...mpl/src/main/java/com/evolveum/midpoint/model/impl/controller/EmulatedSearchProvider.java
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (c) 2010-2017 Evolveum | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
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| package com.evolveum.midpoint.model.impl.controller; | ||
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| import com.evolveum.midpoint.prism.*; | ||
| import com.evolveum.midpoint.prism.match.MatchingRuleRegistry; | ||
| import com.evolveum.midpoint.prism.query.ObjectFilter; | ||
| import com.evolveum.midpoint.prism.query.ObjectOrdering; | ||
| import com.evolveum.midpoint.prism.query.ObjectPaging; | ||
| import com.evolveum.midpoint.prism.query.ObjectQuery; | ||
| import com.evolveum.midpoint.prism.util.CloneUtil; | ||
| import com.evolveum.midpoint.repo.api.RepositoryService; | ||
| import com.evolveum.midpoint.schema.GetOperationOptions; | ||
| import com.evolveum.midpoint.schema.SearchResultList; | ||
| import com.evolveum.midpoint.schema.SelectorOptions; | ||
| import com.evolveum.midpoint.schema.result.OperationResult; | ||
| import com.evolveum.midpoint.util.exception.SchemaException; | ||
| import com.evolveum.midpoint.xml.ns._public.common.common_3.CaseType; | ||
| import com.evolveum.midpoint.xml.ns._public.common.common_3.CaseWorkItemType; | ||
| import com.evolveum.midpoint.xml.ns._public.common.common_3.ObjectType; | ||
| import org.springframework.beans.factory.annotation.Autowired; | ||
| import org.springframework.beans.factory.annotation.Qualifier; | ||
| import org.springframework.stereotype.Component; | ||
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| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.List; | ||
| import java.util.function.Function; | ||
|
|
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| /** | ||
| * @author mederly | ||
| */ | ||
| @Component | ||
| public class EmulatedSearchProvider { | ||
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| @Autowired private MatchingRuleRegistry matchingRuleRegistry; | ||
| @Autowired | ||
| @Qualifier("cacheRepositoryService") | ||
| private transient RepositoryService cacheRepositoryService; | ||
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| public <T extends ObjectType> SearchResultList<PrismObject<T>> searchObjects(Class<T> type, ObjectQuery query, | ||
| Collection<SelectorOptions<GetOperationOptions>> options, | ||
| OperationResult result) throws SchemaException { | ||
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| SearchResultList<PrismObject<T>> allObjects = cacheRepositoryService.searchObjects(type, null, options, result); | ||
| if (query == null) { | ||
| return allObjects; | ||
| } | ||
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| List<PrismObject<T>> filtered = doFiltering(query, allObjects, (o) -> o.getValue()); | ||
| List<PrismObject<T>> paged = doPaging(query, filtered, (o) -> o.getValue()); | ||
| return new SearchResultList<>(paged); | ||
| } | ||
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| public <T extends Containerable> SearchResultList<T> searchContainers(Class<T> type, ObjectQuery query, | ||
| Collection<SelectorOptions<GetOperationOptions>> options, | ||
| OperationResult result) throws SchemaException { | ||
| if (!CaseWorkItemType.class.equals(type)) { | ||
| throw new UnsupportedOperationException("searchContainers is supported only for CaseWorkItemType, not for " + type); | ||
| } | ||
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| List<CaseWorkItemType> allValues = new ArrayList<>(); | ||
| SearchResultList<PrismObject<CaseType>> cases = cacheRepositoryService | ||
| .searchObjects(CaseType.class, null, null, result); | ||
| for (PrismObject<CaseType> aCase : cases) { | ||
| allValues.addAll(CloneUtil.cloneCollectionMembers(aCase.asObjectable().getWorkItem())); | ||
| } | ||
| if (query == null) { | ||
| //noinspection unchecked | ||
| return (SearchResultList<T>) new SearchResultList<>(allValues); | ||
| } | ||
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| List<CaseWorkItemType> filtered = doFiltering(query, allValues, (v) -> v.asPrismContainerValue()); | ||
| List<CaseWorkItemType> paged = doPaging(query, filtered, (v) -> v.asPrismContainerValue()); | ||
| //noinspection unchecked | ||
| return (SearchResultList<T>) new SearchResultList<>(paged); | ||
| } | ||
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| private <T> List<T> doFiltering(ObjectQuery query, List<T> allObjects, Function<T, PrismContainerValue> pcvExtractor) | ||
| throws SchemaException { | ||
| ObjectFilter filter = query.getFilter(); | ||
| if (filter == null) { | ||
| return allObjects; | ||
| } | ||
| List<T> filtered = new ArrayList<>(); | ||
| for (T object : allObjects) { | ||
| if (filter.match(pcvExtractor.apply(object), matchingRuleRegistry)) { | ||
| filtered.add(object); | ||
| } | ||
| } | ||
| return filtered; | ||
| } | ||
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| private <T> List<T> doPaging(ObjectQuery query, List<T> allObjects, Function<T, PrismContainerValue> pcvExtractor) | ||
| throws SchemaException { | ||
| ObjectPaging paging = query.getPaging(); | ||
| if (paging == null) { | ||
| return allObjects; | ||
| } | ||
| if (!paging.getOrderingInstructions().isEmpty()) { | ||
| allObjects.sort((o1, o2) -> { | ||
| PrismContainerValue pcv1 = pcvExtractor.apply(o1); | ||
| PrismContainerValue pcv2 = pcvExtractor.apply(o2); | ||
| for (ObjectOrdering ordering : paging.getOrderingInstructions()) { | ||
| Comparable<Object> c1 = getComparable(pcv1.find(ordering.getOrderBy())); | ||
| Comparable<Object> c2 = getComparable(pcv2.find(ordering.getOrderBy())); | ||
| int result = c1 == null | ||
| ? (c2 == null ? 0 : 1) | ||
| : (c2 == null ? -1 : c1.compareTo(c2)); | ||
| if (result != 0) { | ||
| return result; | ||
| } | ||
| } | ||
| return 0; | ||
| }); | ||
| } | ||
| int start = paging.getOffset() != null ? paging.getOffset() : 0; | ||
| int end = paging.getMaxSize() != null ? Math.min(start + paging.getMaxSize(), allObjects.size()) : allObjects.size(); | ||
| if (start == 0 && end == allObjects.size()) { | ||
| return allObjects; | ||
| } else { | ||
| return allObjects.subList(start, end); | ||
| } | ||
| } | ||
|
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| @SuppressWarnings("unchecked") | ||
| private Comparable<Object> getComparable(Object o) { | ||
| if (o instanceof Item) { | ||
| Item item = (Item) o; | ||
| if (item.getValues().size() > 1) { | ||
| throw new IllegalStateException("Couldn't compare multivalued items"); | ||
| } else if (item.getValues().size() == 1) { | ||
| o = item.getValues().get(0); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
| if (o instanceof PrismValue) { | ||
| o = ((PrismValue) o).getRealValue(); | ||
| } | ||
| if (o instanceof Comparable) { | ||
| return (Comparable<Object>) o; | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| } |
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