[Bug] [dolphinscheduler-api] in the task define list, when edit task, should show pre node list (#12695)

* backend : add pre node list

* resolve workflow error

Co-authored-by: fanwanlong <fanwanlong@kezaihui.com>

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/service/impl/TaskDefinitionServiceImpl.java

@@ -39,6 +39,7 @@ import org.apache.dolphinscheduler.api.service.ProjectService;
 import org.apache.dolphinscheduler.api.service.TaskDefinitionService;
 import org.apache.dolphinscheduler.api.utils.PageInfo;
 import org.apache.dolphinscheduler.api.utils.Result;
+import org.apache.dolphinscheduler.api.vo.TaskDefinitionVo;
 import org.apache.dolphinscheduler.common.constants.Constants;
 import org.apache.dolphinscheduler.common.enums.AuthorizationType;
 import org.apache.dolphinscheduler.common.enums.ConditionType;
@@ -1022,7 +1023,15 @@ public class TaskDefinitionServiceImpl extends BaseServiceImpl implements TaskDe
             logger.error("Task definition does not exist, taskDefinitionCode:{}.", taskCode);
             putMsg(result, Status.TASK_DEFINE_NOT_EXIST, String.valueOf(taskCode));
         } else {
-            result.put(Constants.DATA_LIST, taskDefinition);
+            List<ProcessTaskRelation> taskRelationList = processTaskRelationMapper
+                    .queryByCode(projectCode, 0, 0, taskCode);
+            if (CollectionUtils.isNotEmpty(taskRelationList)) {
+                taskRelationList = taskRelationList.stream()
+                        .filter(v -> v.getPreTaskCode() != 0).collect(Collectors.toList());
+            }
+            TaskDefinitionVo taskDefinitionVo = TaskDefinitionVo.fromTaskDefinition(taskDefinition);
+            taskDefinitionVo.setProcessTaskRelationList(taskRelationList);
+            result.put(Constants.DATA_LIST, taskDefinitionVo);
             putMsg(result, Status.SUCCESS);
         }
         return result;

dolphinscheduler-api/src/main/java/org/apache/dolphinscheduler/api/vo/TaskDefinitionVo.java

@@ -0,0 +1,82 @@
+/*
+ * 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.apache.dolphinscheduler.api.vo;
+
+import org.apache.dolphinscheduler.dao.entity.ProcessTaskRelation;
+import org.apache.dolphinscheduler.dao.entity.TaskDefinition;
+
+import java.util.List;
+
+import lombok.Data;
+
+/**
+ * @author fanwanlong
+ */
+@Data
+public class TaskDefinitionVo extends TaskDefinition {
+
+    /**
+     * process task related list
+     */
+    private List<ProcessTaskRelation> processTaskRelationList;
+
+    public TaskDefinitionVo() {
+    }
+
+    public TaskDefinitionVo(List<ProcessTaskRelation> processTaskRelationList) {
+        this.processTaskRelationList = processTaskRelationList;
+    }
+
+    public static TaskDefinitionVo fromTaskDefinition(TaskDefinition taskDefinition) {
+        TaskDefinitionVo taskDefinitionVo = new TaskDefinitionVo();
+        taskDefinitionVo.setId(taskDefinition.getId());
+        taskDefinitionVo.setCode(taskDefinition.getCode());
+        taskDefinitionVo.setName(taskDefinition.getName());
+        taskDefinitionVo.setVersion(taskDefinition.getVersion());
+        taskDefinitionVo.setDescription(taskDefinition.getDescription());
+        taskDefinitionVo.setProjectCode(taskDefinition.getProjectCode());
+        taskDefinitionVo.setUserId(taskDefinition.getUserId());
+        taskDefinitionVo.setTaskType(taskDefinition.getTaskType());
+        taskDefinitionVo.setTaskParams(taskDefinition.getTaskParams());
+        taskDefinitionVo.setTaskParamList(taskDefinition.getTaskParamList());
+        taskDefinitionVo.setTaskParamMap(taskDefinition.getTaskParamMap());
+        taskDefinitionVo.setFlag(taskDefinition.getFlag());
+        taskDefinitionVo.setTaskPriority(taskDefinition.getTaskPriority());
+        taskDefinitionVo.setUserName(taskDefinition.getUserName());
+        taskDefinitionVo.setProjectName(taskDefinition.getProjectName());
+        taskDefinitionVo.setWorkerGroup(taskDefinition.getWorkerGroup());
+        taskDefinitionVo.setEnvironmentCode(taskDefinition.getEnvironmentCode());
+        taskDefinitionVo.setFailRetryTimes(taskDefinition.getFailRetryTimes());
+        taskDefinitionVo.setFailRetryInterval(taskDefinition.getFailRetryInterval());
+        taskDefinitionVo.setTimeoutFlag(taskDefinition.getTimeoutFlag());
+        taskDefinitionVo.setTimeoutNotifyStrategy(taskDefinition.getTimeoutNotifyStrategy());
+        taskDefinitionVo.setTimeout(taskDefinition.getTimeout());
+        taskDefinitionVo.setDelayTime(taskDefinition.getDelayTime());
+        taskDefinitionVo.setResourceIds(taskDefinition.getResourceIds());
+        taskDefinitionVo.setCreateTime(taskDefinition.getCreateTime());
+        taskDefinitionVo.setUpdateTime(taskDefinition.getUpdateTime());
+        taskDefinitionVo.setModifyBy(taskDefinition.getModifyBy());
+        taskDefinitionVo.setTaskGroupId(taskDefinition.getTaskGroupId());
+        taskDefinitionVo.setTaskGroupPriority(taskDefinition.getTaskGroupPriority());
+        taskDefinitionVo.setCpuQuota(taskDefinition.getCpuQuota());
+        taskDefinitionVo.setMemoryMax(taskDefinition.getMemoryMax());
+        taskDefinitionVo.setTaskExecuteType(taskDefinition.getTaskExecuteType());
+        return taskDefinitionVo;
+    }
+
+}