添加层级对象接口

hutool-core/src/main/java/cn/hutool/core/annotation/CacheableSynthesizedAnnotationAttributeProcessor.java

@@ -22,14 +22,14 @@ import java.util.Comparator;
 public class CacheableSynthesizedAnnotationAttributeProcessor implements SynthesizedAnnotationAttributeProcessor {
 
 	private final Table<String, Class<?>, Object> valueCaches = new RowKeyTable<>();
-	private final Comparator<SynthesizedAnnotation> annotationComparator;
+	private final Comparator<Hierarchical> annotationComparator;
 
 	/**
 	 * 创建一个带缓存的注解值选择器
 	 *
 	 * @param annotationComparator 注解比较器，排序更靠前的注解将被优先用于获取值
 	 */
-	public CacheableSynthesizedAnnotationAttributeProcessor(Comparator<SynthesizedAnnotation> annotationComparator) {
+	public CacheableSynthesizedAnnotationAttributeProcessor(Comparator<Hierarchical> annotationComparator) {
 		Assert.notNull(annotationComparator, "annotationComparator must not null");
 		this.annotationComparator = annotationComparator;
 	}
@@ -40,7 +40,7 @@ public class CacheableSynthesizedAnnotationAttributeProcessor implements Synthes
 	 * 越靠前的越优先被取值。
 	 */
 	public CacheableSynthesizedAnnotationAttributeProcessor() {
-		this(SynthesizedAnnotation.DEFAULT_CHILD_PRIORITY_COMPARATOR);
+		this(Hierarchical.DEFAULT_HIERARCHICAL_COMPARATOR);
 	}
 
 	@SuppressWarnings("unchecked")

hutool-core/src/main/java/cn/hutool/core/annotation/Hierarchical.java

@@ -0,0 +1,155 @@
+package cn.hutool.core.annotation;
+
+
+import java.util.Comparator;
+
+/**
+ * <p>描述以一个参照物为对象，存在于该参照物的层级结构中的对象。
+ *
+ * <p>该对象可通过{@link #getVerticalDistance()}与{@link #getHorizontalDistance()}
+ * 描述其在以参照物为基点的坐标坐标系中的位置。<br>
+ * 在需要对该接口的实现类进行按优先级排序时，距离{@link #getRoot()}对象越近，则该实现类的优先级越高。
+ * 默认提供了{@link #DEFAULT_HIERARCHICAL_COMPARATOR}用于实现该比较规则。<br>
+ * 一般情况下，{@link #getRoot()}返回值相同的对象之间的比较才有意义。
+ *
+ * <p>此外，还提供了{@link Selector}接口用于根据一定的规则从两个{@link Hierarchical}实现类中选择并返回一个最合适的对象，
+ * 默认提供了四个实现类：
+ * <ul>
+ *     <li>{@link Selector#NEAREST_AND_OLDEST_PRIORITY}: 返回距离根对象更近的对象，当距离一样时优先返回旧对象；</li>
+ *     <li>{@link Selector#NEAREST_AND_NEWEST_PRIORITY}: 返回距离根对象更近的对象，当距离一样时优先返回新对象；</li>
+ *     <li>{@link Selector#FARTHEST_AND_OLDEST_PRIORITY}: 返回距离根对象更远的对象，当距离一样时优先返回旧对象；</li>
+ *     <li>{@link Selector#FARTHEST_AND_NEWEST_PRIORITY}: 返回距离根对象更远的对象，当距离一样时优先返回新对象；</li>
+ * </ul>
+ *
+ * @author huangchengxing
+ */
+public interface Hierarchical extends Comparable<Hierarchical> {
+
+	// ====================== compare  ======================
+
+	/**
+	 * 默认{@link #getHorizontalDistance()}与{@link #getVerticalDistance()}排序的比较器
+	 */
+	Comparator<Hierarchical> DEFAULT_HIERARCHICAL_COMPARATOR = Comparator
+		.comparing(Hierarchical::getVerticalDistance)
+		.thenComparing(Hierarchical::getHorizontalDistance);
+
+	/**
+	 * 按{@link #getVerticalDistance()}和{@link #getHorizontalDistance()}排序
+	 *
+	 * @param o {@link SynthesizedAnnotation}对象
+	 * @return 比较值
+	 */
+	@Override
+	default int compareTo(Hierarchical o) {
+		return DEFAULT_HIERARCHICAL_COMPARATOR.compare(this, o);
+	}
+
+	// ====================== hierarchical  ======================
+
+	/**
+	 * 参照物，即坐标为{@code (0, 0)}的对象。
+	 * 当对象本身即为参照物时，该方法应当返回其本身
+	 *
+	 * @return 参照物
+	 */
+	Object getRoot();
+
+	/**
+	 * 获取该对象与参照物的垂直距离。
+	 * 默认情况下，该距离即为当前对象与参照物之间相隔的层级数。
+	 *
+	 * @return 合成注解与根对象的垂直距离
+	 */
+	int getVerticalDistance();
+
+	/**
+	 * 获取该对象与参照物的水平距离。
+	 * 默认情况下，该距离即为当前对象在与参照物{@link #getVerticalDistance()}相同的情况下条，
+	 * 该对象被扫描到的顺序。
+	 *
+	 * @return 合成注解与根对象的水平距离
+	 */
+	int getHorizontalDistance();
+
+	// ====================== selector  ======================
+
+	/**
+	 * {@link Hierarchical}选择器，用于根据一定的规则从两个{@link Hierarchical}实现类中选择并返回一个最合适的对象
+	 */
+	@FunctionalInterface
+	interface Selector {
+
+		/**
+		 * 返回距离根对象更近的对象，当距离一样时优先返回旧对象
+		 */
+		Selector NEAREST_AND_OLDEST_PRIORITY = new NearestAndOldestPrioritySelector();
+
+		/**
+		 * 返回距离根对象更近的对象，当距离一样时优先返回新对象
+		 */
+		Selector NEAREST_AND_NEWEST_PRIORITY = new NearestAndNewestPrioritySelector();
+
+		/**
+		 * 返回距离根对象更远的对象，当距离一样时优先返回旧对象
+		 */
+		Selector FARTHEST_AND_OLDEST_PRIORITY = new FarthestAndOldestPrioritySelector();
+
+		/**
+		 * 返回距离根对象更远的对象，当距离一样时优先返回新对象
+		 */
+		Selector FARTHEST_AND_NEWEST_PRIORITY = new FarthestAndNewestPrioritySelector();
+
+		/**
+		 * 比较两个被合成的对象，选择其中的一个并返回
+		 *
+		 * @param <T>           复合注解类型
+		 * @param prev 上一对象，该参数不允许为空
+		 * @param next 下一对象，该参数不允许为空
+		 * @return 对象
+		 */
+		<T extends Hierarchical> T choose(T prev, T next);
+
+		/**
+		 * 返回距离根对象更近的注解，当距离一样时优先返回旧注解
+		 */
+		class NearestAndOldestPrioritySelector implements Selector {
+			@Override
+			public <T extends Hierarchical> T choose(T oldAnnotation, T newAnnotation) {
+				return newAnnotation.getVerticalDistance() < oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			}
+		}
+
+		/**
+		 * 返回距离根对象更近的注解，当距离一样时优先返回新注解
+		 */
+		class NearestAndNewestPrioritySelector implements Selector {
+			@Override
+			public <T extends Hierarchical> T choose(T oldAnnotation, T newAnnotation) {
+				return newAnnotation.getVerticalDistance() <= oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			}
+		}
+
+		/**
+		 * 返回距离根对象更远的注解，当距离一样时优先返回旧注解
+		 */
+		class FarthestAndOldestPrioritySelector implements Selector {
+			@Override
+			public <T extends Hierarchical> T choose(T oldAnnotation, T newAnnotation) {
+				return newAnnotation.getVerticalDistance() > oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			}
+		}
+
+		/**
+		 * 返回距离根对象更远的注解，当距离一样时优先返回新注解
+		 */
+		class FarthestAndNewestPrioritySelector implements Selector {
+			@Override
+			public <T extends Hierarchical> T choose(T oldAnnotation, T newAnnotation) {
+				return newAnnotation.getVerticalDistance() >= oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			}
+		}
+
+	}
+
+}

hutool-core/src/main/java/cn/hutool/core/annotation/SynthesizedAggregateAnnotation.java

@@ -34,7 +34,33 @@ import java.util.Collection;
  * @see SynthesizedAnnotationPostProcessor
  * @see SynthesizedMetaAggregateAnnotation
  */
-public interface SynthesizedAggregateAnnotation extends Annotation, AggregateAnnotation {
+public interface SynthesizedAggregateAnnotation extends Annotation, AggregateAnnotation, Hierarchical {
+
+	// ================== hierarchical ==================
+
+	/**
+	 * 距离{@link #getRoot()}返回值的垂直距离，
+	 * 默认聚合注解即为根对象，因此返回0
+	 *
+	 * @return 距离{@link #getRoot()}返回值的水平距离，
+	 */
+	@Override
+	default int getVerticalDistance() {
+		return 0;
+	}
+
+	/**
+	 * 距离{@link #getRoot()}返回值的水平距离，
+	 * 默认聚合注解即为根对象，因此返回0
+	 *
+	 * @return 距离{@link #getRoot()}返回值的水平距离，
+	 */
+	@Override
+	default int getHorizontalDistance() {
+		return 0;
+	}
+
+	// ================== synthesize ==================
 
 	/**
 	 * 获取在聚合中存在的指定注解对象

hutool-core/src/main/java/cn/hutool/core/annotation/SynthesizedAnnotation.java

@@ -3,7 +3,6 @@ package cn.hutool.core.annotation;
 import cn.hutool.core.collection.CollUtil;
 
 import java.lang.annotation.Annotation;
-import java.util.Comparator;
 import java.util.Map;
 import java.util.function.UnaryOperator;
 
@@ -16,16 +15,7 @@ import java.util.function.UnaryOperator;
  * @author huangchengxing
  * @see SynthesizedAggregateAnnotation
  */
-public interface SynthesizedAnnotation extends Annotation, Comparable<SynthesizedAnnotation> {
+public interface SynthesizedAnnotation extends Annotation, Hierarchical {
-
-	/**
-	 * {@link SynthesizedAnnotation}使用的默认的比较器，
-	 * 按照按{@link #getVerticalDistance()}和{@link #getHorizontalDistance()}的返回值进行排序。<br>
-	 * 一般情况下，排序越小的合成注解应当被优先处理。
-	 */
-	Comparator<SynthesizedAnnotation> DEFAULT_CHILD_PRIORITY_COMPARATOR = Comparator
-		.comparing(SynthesizedAnnotation::getVerticalDistance)
-		.thenComparing(SynthesizedAnnotation::getHorizontalDistance);
 
 	/**
 	 * 获取所属的合成注解聚合器
@@ -34,13 +24,6 @@ public interface SynthesizedAnnotation extends Annotation, Comparable<Synthesize
 	 */
 	SynthesizedAggregateAnnotation getOwner();
 
-	/**
-	 * 获取该合成注解对应的根节点
-	 *
-	 * @return 合成注解对应的根节点
-	 */
-	Object getRoot();
-
 	/**
 	 * 获取被合成的注解对象
 	 *
@@ -54,6 +37,7 @@ public interface SynthesizedAnnotation extends Annotation, Comparable<Synthesize
 	 *
 	 * @return 合成注解与根对象的垂直距离
 	 */
+	@Override
 	int getVerticalDistance();
 
 	/**
@@ -62,6 +46,7 @@ public interface SynthesizedAnnotation extends Annotation, Comparable<Synthesize
 	 *
 	 * @return 合成注解与根对象的水平距离
 	 */
+	@Override
 	int getHorizontalDistance();
 
 	/**
@@ -115,15 +100,4 @@ public interface SynthesizedAnnotation extends Annotation, Comparable<Synthesize
 	 */
 	Object getAttributeValue(String attributeName);
 
-	/**
-	 * 按{@link #getVerticalDistance()}和{@link #getHorizontalDistance()}排序
-	 *
-	 * @param o {@link SynthesizedAnnotation}对象
-	 * @return 比较值
-	 */
-	@Override
-	default int compareTo(SynthesizedAnnotation o) {
-		return DEFAULT_CHILD_PRIORITY_COMPARATOR.compare(this, o);
-	}
-
 }

hutool-core/src/main/java/cn/hutool/core/annotation/SynthesizedAnnotationSelector.java

@@ -45,7 +45,7 @@ public interface SynthesizedAnnotationSelector {
 	class NearestAndOldestPrioritySelector implements SynthesizedAnnotationSelector {
 		@Override
 		public <T extends SynthesizedAnnotation> T choose(T oldAnnotation, T newAnnotation) {
-			return newAnnotation.getVerticalDistance() < oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			return Hierarchical.Selector.NEAREST_AND_OLDEST_PRIORITY.choose(oldAnnotation, newAnnotation);
 		}
 	}
 
@@ -55,7 +55,7 @@ public interface SynthesizedAnnotationSelector {
 	class NearestAndNewestPrioritySelector implements SynthesizedAnnotationSelector {
 		@Override
 		public <T extends SynthesizedAnnotation> T choose(T oldAnnotation, T newAnnotation) {
-			return newAnnotation.getVerticalDistance() <= oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			return Hierarchical.Selector.NEAREST_AND_NEWEST_PRIORITY.choose(oldAnnotation, newAnnotation);
 		}
 	}
 
@@ -65,7 +65,7 @@ public interface SynthesizedAnnotationSelector {
 	class FarthestAndOldestPrioritySelector implements SynthesizedAnnotationSelector {
 		@Override
 		public <T extends SynthesizedAnnotation> T choose(T oldAnnotation, T newAnnotation) {
-			return newAnnotation.getVerticalDistance() > oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			return Hierarchical.Selector.FARTHEST_AND_OLDEST_PRIORITY.choose(oldAnnotation, newAnnotation);
 		}
 	}
 
@@ -75,7 +75,7 @@ public interface SynthesizedAnnotationSelector {
 	class FarthestAndNewestPrioritySelector implements SynthesizedAnnotationSelector {
 		@Override
 		public <T extends SynthesizedAnnotation> T choose(T oldAnnotation, T newAnnotation) {
-			return newAnnotation.getVerticalDistance() >= oldAnnotation.getVerticalDistance() ? newAnnotation : oldAnnotation;
+			return Hierarchical.Selector.FARTHEST_AND_NEWEST_PRIORITY.choose(oldAnnotation, newAnnotation);
 		}
 	}
 

hutool-core/src/main/java/cn/hutool/core/annotation/SynthesizedMetaAggregateAnnotation.java

@@ -52,6 +52,21 @@ public class SynthesizedMetaAggregateAnnotation implements SynthesizedAggregateA
 	 */
 	private final Annotation source;
 
+	/**
+	 * 根对象
+	 */
+	private final Object root;
+
+	/**
+	 * 距离根对象的垂直距离
+	 */
+	private final int verticalDistance;
+
+	/**
+	 * 距离根对象的水平距离
+	 */
+	private final int horizontalDistance;
+
 	/**
 	 * 包含根注解以及其元注解在内的全部注解实例
 	 */
@@ -94,11 +109,35 @@ public class SynthesizedMetaAggregateAnnotation implements SynthesizedAggregateA
 	/**
 	 * 基于指定根注解，为其层级结构中的全部注解构造一个合成注解
 	 *
-	 * @param annotation         当前查找的注解对象
+	 * @param annotation               当前查找的注解对象
-	 * @param annotationSelector 合成注解选择器
+	 * @param annotationSelector       合成注解选择器
-	 * @param attributeProcessor 注解属性处理器
+	 * @param attributeProcessor       注解属性处理器
+	 * @param annotationPostProcessors 注解后置处理器
 	 */
 	public SynthesizedMetaAggregateAnnotation(
+		Annotation annotation,
+		SynthesizedAnnotationSelector annotationSelector,
+		SynthesizedAnnotationAttributeProcessor attributeProcessor,
+		Collection<? extends SynthesizedAnnotationPostProcessor> annotationPostProcessors) {
+		this(
+			null, 0, 0,
+			annotation, annotationSelector, attributeProcessor, annotationPostProcessors
+		);
+	}
+
+	/**
+	 * 基于指定根注解，为其层级结构中的全部注解构造一个合成注解
+	 *
+	 * @param root                     根对象
+	 * @param verticalDistance         距离根对象的水平距离
+	 * @param horizontalDistance       距离根对象的垂直距离
+	 * @param annotation               当前查找的注解对象
+	 * @param annotationSelector       合成注解选择器
+	 * @param attributeProcessor       注解属性处理器
+	 * @param annotationPostProcessors 注解后置处理器
+	 */
+	SynthesizedMetaAggregateAnnotation(
+		Object root, int verticalDistance, int horizontalDistance,
 		Annotation annotation,
 		SynthesizedAnnotationSelector annotationSelector,
 		SynthesizedAnnotationAttributeProcessor attributeProcessor,
@@ -108,6 +147,11 @@ public class SynthesizedMetaAggregateAnnotation implements SynthesizedAggregateA
 		Assert.notNull(attributeProcessor, "attributeProcessor must not null");
 		Assert.notNull(annotationPostProcessors, "attributePostProcessors must not null");
 
+		// 初始化坐标
+		this.root = ObjectUtil.defaultIfNull(root, this);
+		this.verticalDistance = verticalDistance;
+		this.horizontalDistance = horizontalDistance;
+
 		// 初始化属性
 		this.source = annotation;
 		this.annotationSelector = annotationSelector;
@@ -123,6 +167,36 @@ public class SynthesizedMetaAggregateAnnotation implements SynthesizedAggregateA
 		);
 	}
 
+	/**
+	 * 获取根对象
+	 *
+	 * @return 根对象
+	 */
+	@Override
+	public Object getRoot() {
+		return root;
+	}
+
+	/**
+	 * 获取与根对象的垂直距离
+	 *
+	 * @return 与根对象的垂直距离
+	 */
+	@Override
+	public int getVerticalDistance() {
+		return verticalDistance;
+	}
+
+	/**
+	 * 获取与根对象的水平距离
+	 *
+	 * @return 获取与根对象的水平距离
+	 */
+	@Override
+	public int getHorizontalDistance() {
+		return horizontalDistance;
+	}
+
 	/**
 	 * 获取根注解
 	 *

hutool-core/src/test/java/cn/hutool/core/annotation/AliasAnnotationPostProcessorTest.java

@@ -106,6 +106,11 @@ public class AliasAnnotationPostProcessorTest {
 		public Object getAttribute(String attributeName, Class<?> attributeType) {
 			return null;
 		}
+
+		@Override
+		public Object getRoot() {
+			return null;
+		}
 	}
 
 	static class TestSynthesizedAnnotation implements SynthesizedAnnotation {

hutool-core/src/test/java/cn/hutool/core/annotation/AliasLinkAnnotationPostProcessorTest.java

@@ -134,6 +134,11 @@ public class AliasLinkAnnotationPostProcessorTest {
 		public Object getAttribute(String attributeName, Class<?> attributeType) {
 			return null;
 		}
+
+		@Override
+		public Object getRoot() {
+			return null;
+		}
 	}
 
 	static class TestSynthesizedAnnotation implements SynthesizedAnnotation {

hutool-core/src/test/java/cn/hutool/core/annotation/MirrorLinkAnnotationPostProcessorTest.java

@@ -109,6 +109,11 @@ public class MirrorLinkAnnotationPostProcessorTest {
 			return null;
 		}
 
+		@Override
+		public Object getRoot() {
+			return null;
+		}
+
 	}
 
 	static class TestSynthesizedAnnotation implements SynthesizedAnnotation {