fix apache#6306. support TypeBuilder sort

dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/definition/TypeDefinitionBuilder.java

@@ -25,6 +25,7 @@
 
 import java.lang.reflect.Type;
 import java.util.ArrayList;
+import java.util.Comparator;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -36,14 +37,20 @@
  */
 public class TypeDefinitionBuilder {
     private static final Logger logger = LoggerFactory.getLogger(TypeDefinitionBuilder.class);
-    private static final List<TypeBuilder> BUILDERS;
+    static final List<TypeBuilder> BUILDERS;
 
     static {
         List<TypeBuilder> builders = new ArrayList<>();
         ExtensionLoader<TypeBuilder> extensionLoader = ExtensionLoader.getExtensionLoader(TypeBuilder.class);
         for (String extensionName : extensionLoader.getSupportedExtensions()) {
             builders.add(extensionLoader.getExtension(extensionName));
         }
+        builders.sort(new Comparator<TypeBuilder>() {
+            @Override
+            public int compare(TypeBuilder o1, TypeBuilder o2) {
+                return o1.order() - o2.order();
+            }
+        });
         BUILDERS = builders;
     }
 

dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/definition/builder/CollectionTypeBuilder.java

@@ -31,6 +31,11 @@
  */
 public class CollectionTypeBuilder implements TypeBuilder {
 
+    @Override
+    public int order(){
+        return 99;
+    }
+
     @Override
     public boolean accept(Type type, Class<?> clazz) {
         if (clazz == null) {

dubbo-metadata/dubbo-metadata-api/src/main/java/org/apache/dubbo/metadata/definition/builder/TypeBuilder.java

@@ -28,6 +28,11 @@
 @SPI
 public interface TypeBuilder {
 
+    // the smaller, it is have much more priority
+    default int order(){
+        return 100;
+    }
+
     /**
      * Whether the build accept the type or class passed in.
      */

dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/definition/TestTypeBuilder.java

@@ -0,0 +1,27 @@
+package org.apache.dubbo.metadata.definition;
+
+import org.apache.dubbo.metadata.definition.builder.TypeBuilder;
+import org.apache.dubbo.metadata.definition.model.TypeDefinition;
+
+import java.lang.reflect.Type;
+import java.util.Map;
+
+/**
+ * test for sort
+ */
+public class TestTypeBuilder implements TypeBuilder {
+    // it is smaller than the implements of TypeBuilder
+    public int order(){
+        return 10;
+    }
+
+    @Override
+    public boolean accept(Type type, Class<?> clazz) {
+        return false;
+    }
+
+    @Override
+    public TypeDefinition build(Type type, Class<?> clazz, Map<Class<?>, TypeDefinition> typeCache) {
+        return null;
+    }
+}

dubbo-metadata/dubbo-metadata-api/src/test/java/org/apache/dubbo/metadata/definition/TypeDefinitionBuilderTest.java

@@ -0,0 +1,15 @@
+package org.apache.dubbo.metadata.definition;
+
+import org.apache.dubbo.metadata.definition.builder.TypeBuilder;
+
+import org.junit.jupiter.api.Assertions;
+import org.junit.jupiter.api.Test;
+
+public class TypeDefinitionBuilderTest {
+
+    @Test
+    public void testSortTypeBuilder(){
+        TypeBuilder tb = TypeDefinitionBuilder.BUILDERS.get(0);
+        Assertions.assertTrue(tb instanceof TestTypeBuilder);
+    }
+}

dubbo-metadata/dubbo-metadata-api/src/test/resources/META-INF/dubbo/internal/org.apache.dubbo.metadata.definition.builder.TypeBuilder

@@ -0,0 +1 @@
+test=org.apache.dubbo.metadata.definition.TestTypeBuilder