[WIP] incubator-kie-issues#1545: Create JPA persistence layer for Human Tasks

addons/common/jbpm-usertask-storage-jpa/pom.xml

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>org.kie</groupId>
+        <artifactId>kogito-addons-common-parent</artifactId>
+        <version>999-SNAPSHOT</version>
+    </parent>
+
+    <groupId>org.jbpm</groupId>
+    <artifactId>jbpm-addons-usertask-storage-jpa</artifactId>
+
+    <name>jBPM :: Add-Ons :: User Task Storage JPA :: Common </name>
+    <description>jBPM Add-Ons User Task Storage JPA Common</description>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <java.module.name>org.jbpm.usertask.storage.jpa</java.module.name>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>jakarta.persistence</groupId>
+            <artifactId>jakarta.persistence-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.kie.kogito</groupId>
+            <artifactId>kogito-api</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.kie.kogito</groupId>
+            <artifactId>jbpm-usertask</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-params</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>ch.qos.logback</groupId>
+            <artifactId>logback-classic</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+</project>

addons/common/jbpm-usertask-storage-jpa/src/main/java/org/jbpm/usertask/jpa/JPAUserTaskInstances.java

@@ -0,0 +1,125 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+
+package org.jbpm.usertask.jpa;
+
+import java.util.*;
+import java.util.function.Function;
+
+import org.jbpm.usertask.jpa.mapper.UserTaskInstanceEntityMapper;
+import org.jbpm.usertask.jpa.model.UserTaskInstanceEntity;
+import org.jbpm.usertask.jpa.repository.UserTaskInstanceRepository;
+import org.kie.kogito.auth.IdentityProvider;
+import org.kie.kogito.usertask.UserTaskInstance;
+import org.kie.kogito.usertask.UserTaskInstances;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public abstract class JPAUserTaskInstances implements UserTaskInstances {
+    public static final Logger LOGGER = LoggerFactory.getLogger(JPAUserTaskInstances.class);
+
+    private final UserTaskInstanceRepository userTaskInstanceRepository;
+    private final UserTaskInstanceEntityMapper userTaskInstanceEntityMapper;
+
+    private Function<UserTaskInstance, UserTaskInstance> reconnectUserTaskInstance;
+    private Function<UserTaskInstance, UserTaskInstance> disconnectUserTaskInstance;
+
+    public JPAUserTaskInstances(UserTaskInstanceRepository userTaskInstanceRepository, UserTaskInstanceEntityMapper userTaskInstanceEntityMapper) {
+        this.userTaskInstanceRepository = userTaskInstanceRepository;
+        this.userTaskInstanceEntityMapper = userTaskInstanceEntityMapper;
+    }
+
+    @Override
+    public Optional<UserTaskInstance> findById(String userTaskInstanceId) {
+        return this.userTaskInstanceRepository.findById(userTaskInstanceId)
+                .map(userTaskInstanceEntityMapper::mapTaskEntityToInstance)
+                .map(reconnectUserTaskInstance);
+    }
+
+    @Override
+    public List<UserTaskInstance> findByIdentity(IdentityProvider identityProvider) {
+        return userTaskInstanceRepository.findByIdentity(identityProvider)
+                .stream()
+                .map(userTaskInstanceEntityMapper::mapTaskEntityToInstance)
+                .map(reconnectUserTaskInstance)
+                .toList();
+    }
+
+    @Override
+    public boolean exists(String userTaskInstanceId) {
+        return userTaskInstanceRepository.findById(userTaskInstanceId).isPresent();
+    }
+
+    @Override
+    public UserTaskInstance create(UserTaskInstance userTaskInstance) {
+
+        UserTaskInstanceEntity entity = new UserTaskInstanceEntity();
+        entity.setId(userTaskInstance.getId());
+
+        this.userTaskInstanceRepository.persist(entity);
+
+        userTaskInstanceEntityMapper.mapTaskInstanceToEntity(userTaskInstance, entity);
+
+        this.userTaskInstanceRepository.update(entity);
+
+        return this.reconnectUserTaskInstance.apply(userTaskInstance);
+    }
+
+    @Override
+    public UserTaskInstance update(UserTaskInstance userTaskInstance) {
+
+        Optional<UserTaskInstanceEntity> optional = userTaskInstanceRepository.findById(userTaskInstance.getId());
+
+        if (optional.isEmpty()) {
+            LOGGER.error("Could not find userTaskInstance with id {}", userTaskInstance.getId());
+            throw new RuntimeException("Could not find userTaskInstance with id " + userTaskInstance.getId());
+        }
+
+        UserTaskInstanceEntity userTaskInstanceEntity = optional.get();
+
+        userTaskInstanceEntityMapper.mapTaskInstanceToEntity(userTaskInstance, userTaskInstanceEntity);
+
+        userTaskInstanceRepository.update(userTaskInstanceEntity);
+
+        return userTaskInstance;
+    }
+
+    @Override
+    public UserTaskInstance remove(UserTaskInstance userTaskInstance) {
+        Optional<UserTaskInstanceEntity> optional = userTaskInstanceRepository.findById(userTaskInstance.getId());
+
+        if (optional.isEmpty()) {
+            LOGGER.warn("Could not remove userTaskInstance with id {}, task cannot be found", userTaskInstance.getId());
+            throw new RuntimeException("Could not remove userTaskInstance with id " + userTaskInstance.getId() + ", userTaskInstance cannot be found");
+        }
+
+        this.userTaskInstanceRepository.remove(optional.get());
+        return this.disconnectUserTaskInstance.apply(userTaskInstance);
+    }
+
+    @Override
+    public void setReconnectUserTaskInstance(Function<UserTaskInstance, UserTaskInstance> reconnectUserTaskInstance) {
+        this.reconnectUserTaskInstance = reconnectUserTaskInstance;
+    }
+
+    @Override
+    public void setDisconnectUserTaskInstance(Function<UserTaskInstance, UserTaskInstance> disconnectUserTaskInstance) {
+        this.disconnectUserTaskInstance = disconnectUserTaskInstance;
+    }
+}

addons/common/jbpm-usertask-storage-jpa/src/main/java/org/jbpm/usertask/jpa/mapper/AttachmentsEntityMapper.java

@@ -0,0 +1,73 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+
+package org.jbpm.usertask.jpa.mapper;
+
+import java.net.URI;
+import java.util.Collection;
+
+import org.jbpm.usertask.jpa.model.AttachmentEntity;
+import org.jbpm.usertask.jpa.model.UserTaskInstanceEntity;
+import org.jbpm.usertask.jpa.repository.AttachmentRepository;
+import org.kie.kogito.usertask.UserTaskInstance;
+import org.kie.kogito.usertask.model.Attachment;
+
+public class AttachmentsEntityMapper {
+    private final AttachmentRepository repository;
+
+    public AttachmentsEntityMapper(AttachmentRepository repository) {
+        this.repository = repository;
+    }
+
+    public void mapInstanceToEntity(UserTaskInstance userTaskInstance, UserTaskInstanceEntity userTaskInstanceEntity) {
+        Collection<AttachmentEntity> toRemove = userTaskInstanceEntity.getAttachments()
+                .stream()
+                .filter(entity -> userTaskInstance.getAttachments().stream().noneMatch(attachment -> attachment.getId().equals(entity.getId())))
+                .toList();
+
+        toRemove.forEach(attachment -> {
+            repository.remove(attachment);
+            userTaskInstanceEntity.removeAttachment(attachment);
+        });
+
+        userTaskInstance.getAttachments().forEach(attachment -> {
+            AttachmentEntity attachmentEntity = userTaskInstanceEntity.getAttachments().stream().filter(entity -> entity.getId().equals(attachment.getId())).findFirst().orElseGet(() -> {
+                AttachmentEntity entity = new AttachmentEntity();
+                userTaskInstanceEntity.addAttachment(entity);
+                return entity;
+            });
+            attachmentEntity.setId(attachment.getId());
+            attachmentEntity.setUpdatedBy(attachment.getUpdatedBy());
+            attachmentEntity.setName(attachment.getName());
+            attachmentEntity.setUrl(attachment.getContent().toString());
+            attachmentEntity.setUpdatedAt(attachment.getUpdatedAt());
+        });
+    }
+
+    public void mapEntityToInstance(UserTaskInstanceEntity userTaskInstanceEntity, UserTaskInstance userTaskInstance) {
+        userTaskInstance.getAttachments().clear();
+        userTaskInstanceEntity.getAttachments().forEach(attachmentEntity -> {
+            Attachment attachment = new Attachment(attachmentEntity.getId(), attachmentEntity.getUpdatedBy());
+            attachment.setId(attachmentEntity.getId());
+            attachment.setContent(URI.create(attachmentEntity.getUrl()));
+            attachment.setUpdatedAt(attachmentEntity.getUpdatedAt());
+            userTaskInstance.addAttachment(attachment);
+        });
+    }
+}

addons/common/jbpm-usertask-storage-jpa/src/main/java/org/jbpm/usertask/jpa/mapper/CommentsEntityMapper.java

@@ -0,0 +1,72 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+
+package org.jbpm.usertask.jpa.mapper;
+
+import java.util.Collection;
+
+import org.jbpm.usertask.jpa.model.CommentEntity;
+import org.jbpm.usertask.jpa.model.UserTaskInstanceEntity;
+import org.jbpm.usertask.jpa.repository.CommentRepository;
+import org.kie.kogito.usertask.UserTaskInstance;
+import org.kie.kogito.usertask.model.Comment;
+
+public class CommentsEntityMapper {
+
+    private final CommentRepository repository;
+
+    public CommentsEntityMapper(CommentRepository repository) {
+        this.repository = repository;
+    }
+
+    public void mapInstanceToEntity(UserTaskInstance userTaskInstance, UserTaskInstanceEntity userTaskInstanceEntity) {
+        Collection<CommentEntity> toRemove = userTaskInstanceEntity.getComments()
+                .stream()
+                .filter(entity -> userTaskInstance.getComments().stream().noneMatch(comment -> comment.getId().equals(entity.getId())))
+                .toList();
+
+        toRemove.forEach(comment -> {
+            repository.remove(comment);
+            userTaskInstanceEntity.removeComment(comment);
+        });
+
+        userTaskInstance.getComments().forEach(comment -> {
+            CommentEntity commentEntity = userTaskInstanceEntity.getComments().stream().filter(entity -> entity.getId().equals(comment.getId())).findFirst().orElseGet(() -> {
+                CommentEntity entity = new CommentEntity();
+                userTaskInstanceEntity.addComment(entity);
+                return entity;
+            });
+            commentEntity.setId(comment.getId());
+            commentEntity.setUpdatedBy(comment.getUpdatedBy());
+            commentEntity.setComment(comment.getContent());
+            commentEntity.setUpdatedAt(comment.getUpdatedAt());
+        });
+    }
+
+    public void mapEntityToInstance(UserTaskInstanceEntity userTaskInstanceEntity, UserTaskInstance userTaskInstance) {
+        userTaskInstance.getComments().clear();
+        userTaskInstanceEntity.getComments().forEach(commentEntity -> {
+            Comment comment = new Comment(commentEntity.getId(), commentEntity.getUpdatedBy());
+            comment.setId(commentEntity.getId());
+            comment.setContent(commentEntity.getComment());
+            comment.setUpdatedAt(commentEntity.getUpdatedAt());
+            userTaskInstance.addComment(comment);
+        });
+    }
+}