feat: 添加多数据源切换切面。

mybatis-flex-spring/src/main/java/com/mybatisflex/spring/datasource/DataSourceAdvice.java

@@ -0,0 +1,53 @@
+/*
+ *  Copyright (c) 2022-2023, Mybatis-Flex (fuhai999@gmail.com).
+ *  <p>
+ *  Licensed 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
+ *  <p>
+ *  http://www.apache.org/licenses/LICENSE-2.0
+ *  <p>
+ *  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 com.mybatisflex.spring.datasource;
+
+import com.mybatisflex.annotation.UseDataSource;
+import org.aopalliance.aop.Advice;
+import org.springframework.aop.Pointcut;
+import org.springframework.aop.support.AbstractPointcutAdvisor;
+import org.springframework.aop.support.ComposablePointcut;
+import org.springframework.aop.support.annotation.AnnotationMatchingPointcut;
+import org.springframework.aop.support.annotation.AnnotationMethodMatcher;
+
+/**
+ * 多数据源切面。
+ *
+ * @author 王帅
+ * @since 2023-06-25
+ */
+public class DataSourceAdvice extends AbstractPointcutAdvisor {
+
+    private final DataSourceInterceptor advice;
+
+    public DataSourceAdvice(DataSourceInterceptor advice) {
+        this.advice = advice;
+    }
+
+    @Override
+    public Pointcut getPointcut() {
+        AnnotationMatchingPointcut cpc = new AnnotationMatchingPointcut(UseDataSource.class/*, true*/);
+        AnnotationMethodMatcher mpc = new AnnotationMethodMatcher(UseDataSource.class);
+        return new ComposablePointcut(cpc).union(mpc);
+    }
+
+    @Override
+    public Advice getAdvice() {
+        return this.advice;
+    }
+
+}