001/**
002 * Copyright (c) 2015-2022, Michael Yang 杨福海 (fuhai999@gmail.com).
003 * <p>
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * <p>
008 * http://www.apache.org/licenses/LICENSE-2.0
009 * <p>
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package io.jboot.db.datasource;
017
018import com.jfinal.aop.Interceptor;
019import com.jfinal.aop.Invocation;
020import io.jboot.aop.InterceptorBuilder;
021import io.jboot.aop.Interceptors;
022import io.jboot.aop.annotation.AutoLoad;
023import io.jboot.db.JbootDb;
024import io.jboot.db.annotation.PriorDatasource;
025import io.jboot.utils.AnnotationUtil;
026import io.jboot.utils.StrUtil;
027
028import java.lang.reflect.Method;
029
030/**
031 * @author Michael Yang 杨福海 （fuhai999@gmail.com）
032 */
033@AutoLoad
034public class PriorDatasourceInterceptor implements Interceptor, InterceptorBuilder {
035
036
037    @Override
038    public void intercept(Invocation inv) {
039        PriorDatasource datasource = getAnnotation(inv);
040        if (datasource != null) {
041            String configName = AnnotationUtil.get(datasource.value());
042            if (StrUtil.isNotBlank(configName)) {
043                JbootDb.setCurrentConfigName(configName);
044            }
045        }
046
047        inv.invoke();
048    }
049
050
051
052    private PriorDatasource getAnnotation(Invocation inv) {
053        PriorDatasource annotation = inv.getController().getClass().getAnnotation(PriorDatasource.class);
054        return annotation != null ? annotation : inv.getMethod().getAnnotation(PriorDatasource.class);
055    }
056
057
058
059    @Override
060    public void build(Class<?> targetClass, Method method, Interceptors interceptors) {
061        if (Util.hasAnnotation(targetClass, PriorDatasource.class) || Util.hasAnnotation(method, PriorDatasource.class)) {
062            interceptors.add(this);
063        }
064    }
065}