调整核心类的创建方式

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/helper/MapHelper.java

@@ -25,7 +25,7 @@ public class MapHelper {
     return map;
   }
 
-  public static Map<String, Object> empty() {
+  public static <K, V> Map<K, V> empty() {
     return new HashMap<>(0);
   }
 

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/manager/FlowableManager.java

@@ -3,6 +3,7 @@ package com.lanyuanxiaoyao.flowable.core.manager;
 import com.lanyuanxiaoyao.flowable.core.helper.ListHelper;
 import com.lanyuanxiaoyao.flowable.core.helper.MapHelper;
 import com.lanyuanxiaoyao.flowable.core.helper.StringHelper;
+import com.lanyuanxiaoyao.flowable.core.model.FlowableAccessor;
 import com.lanyuanxiaoyao.flowable.core.model.FlowableAction;
 import com.lanyuanxiaoyao.flowable.core.model.FlowableHandler;
 import com.lanyuanxiaoyao.flowable.core.model.FlowableHistory;
@@ -68,7 +69,11 @@ public abstract class FlowableManager {
 
   public String start(String nodeId, Map<String, Object> metadata) {
     FlowableNode node = repository.getNode(nodeId);
-    FlowableInstance instance = new FlowableInstance(createId(), node.getNodeId(), new FlowableMetadata(metadata));
+    FlowableInstance instance = FlowableInstance.builder()
+        .instanceId(createId())
+        .currentNodeId(node.getNodeId())
+        .metadata(new FlowableMetadata(metadata))
+        .build();
     repository.saveInstance(instance);
 
     if (FlowableNode.Type.AUTOMATIC.equals(node.getType())) {

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableHistory.java

@@ -1,6 +1,8 @@
 package com.lanyuanxiaoyao.flowable.core.model;
 
 import java.time.LocalDateTime;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 
 /**
@@ -8,6 +10,8 @@ import lombok.Data;
  * @version 20241231
  */
 @Data
+@AllArgsConstructor
+@Builder
 public class FlowableHistory {
   private final String historyId;
   private final String instanceId;
@@ -18,12 +22,4 @@ public class FlowableHistory {
   public FlowableHistory(String historyId, String instanceId, FlowableAction action, String comment) {
     this(historyId, instanceId, action, comment, LocalDateTime.now());
   }
-
-  public FlowableHistory(String historyId, String instanceId, FlowableAction action, String comment, LocalDateTime createdTime) {
-    this.historyId = historyId;
-    this.instanceId = instanceId;
-    this.action = action;
-    this.comment = comment;
-    this.createdTime = createdTime;
-  }
 }

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableInstance.java

@@ -2,6 +2,8 @@ package com.lanyuanxiaoyao.flowable.core.model;
 
 import java.time.LocalDateTime;
 import java.util.Map;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 
 /**
@@ -9,31 +11,20 @@ import lombok.Data;
  * @version 20241231
  */
 @Data
+@AllArgsConstructor
+@Builder
 public class FlowableInstance {
   private final String instanceId;
-  private final FlowableMetadata metadata;
-  private final LocalDateTime createdTime;
+  @Builder.Default
+  private final FlowableMetadata metadata = new FlowableMetadata();
+  @Builder.Default
+  private final LocalDateTime createdTime = LocalDateTime.now();
 
   private String currentNodeId;
-  private Status status;
-  private LocalDateTime updatedTime;
-
-  public FlowableInstance(String instanceId, String currentNodeId) {
-    this(instanceId, currentNodeId, new FlowableMetadata(), Status.RUNNING, LocalDateTime.now(), LocalDateTime.now());
-  }
-
-  public FlowableInstance(String instanceId, String currentNodeId, FlowableMetadata metadata) {
-    this(instanceId, currentNodeId, metadata, Status.RUNNING, LocalDateTime.now(), LocalDateTime.now());
-  }
-
-  public FlowableInstance(String instanceId, String currentNodeId, FlowableMetadata metadata, Status status, LocalDateTime createdTime, LocalDateTime updatedTime) {
-    this.instanceId = instanceId;
-    this.metadata = metadata;
-    this.createdTime = createdTime;
-    this.currentNodeId = currentNodeId;
-    this.status = status;
-    this.updatedTime = updatedTime;
-  }
+  @Builder.Default
+  private Status status = Status.RUNNING;
+  @Builder.Default
+  private LocalDateTime updatedTime = LocalDateTime.now();
 
   public void addMetadata(Map<String, Object> metadata) {
     this.metadata.putAll(metadata);

flowable-core/src/main/java/com/lanyuanxiaoyao/flowable/core/model/FlowableNode.java

@@ -1,9 +1,11 @@
 package com.lanyuanxiaoyao.flowable.core.model;
 
-import com.lanyuanxiaoyao.flowable.core.helper.ListHelper;
+import com.lanyuanxiaoyao.flowable.core.helper.MapHelper;
 import java.time.LocalDateTime;
 import java.util.List;
 import java.util.Map;
+import lombok.AllArgsConstructor;
+import lombok.Builder;
 import lombok.Data;
 
 /**
@@ -13,43 +15,29 @@ import lombok.Data;
  * @version 20241231
  */
 @Data
+@AllArgsConstructor
+@Builder
 public class FlowableNode {
   private final String nodeId;
   private final String name;
   private final String description;
 
-  private final Type type;
-  private final String handler;
-  private final Map<FlowableAction, String> targets;
+  @Builder.Default
+  private final Type type = Type.MANUAL;
+  @Builder.Default
+  private final String handler = FlowableHandler.DefaultFlowableHandler.class.getName();
+  @Builder.Default
+  private final Map<FlowableAction, String> targets = MapHelper.empty();
 
+  @Builder.Default
+  private final String accessor = FlowableAccessor.DefaultFlowableAccessor.class.getName();
   private final List<String> listeners;
-  private final LocalDateTime createdTime;
+  @Builder.Default
+  private final LocalDateTime createdTime = LocalDateTime.now();
 
+  @Builder.Default
   private LocalDateTime updatedTime = LocalDateTime.now();
 
-  public FlowableNode(String nodeId, String name, String description, Map<FlowableAction, String> targets) {
-    this(nodeId, name, description, Type.MANUAL, FlowableHandler.DefaultFlowableHandler.class, targets);
-  }
-
-  public FlowableNode(String nodeId, String name, String description, Class<? extends FlowableHandler> actionClass, Map<FlowableAction, String> targets) {
-    this(nodeId, name, description, Type.AUTOMATIC, actionClass, targets);
-  }
-
-  public FlowableNode(String nodeId, String name, String description, Type type, Class<? extends FlowableHandler> actionClass, Map<FlowableAction, String> targets) {
-    this(nodeId, name, description, type, actionClass.getName(), targets, ListHelper.empty(), LocalDateTime.now());
-  }
-
-  public FlowableNode(String nodeId, String name, String description, Type type, String handler, Map<FlowableAction, String> targets, List<String> listeners, LocalDateTime createdTime) {
-    this.nodeId = nodeId;
-    this.name = name;
-    this.description = description;
-    this.type = type;
-    this.handler = handler;
-    this.targets = targets;
-    this.listeners = listeners;
-    this.createdTime = createdTime;
-  }
-
   public enum Type {
     AUTOMATIC,
     MANUAL,