org.fastquery.web.GenerateRepositoryImpl Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of fastquery Show documentation
Method of fast database query in complicated environment.
There is a newer version: 1.0.140
/*
 * Copyright (c) 2016-2017, fastquery.org and/or its affiliates. All rights reserved.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.
 * 
 * For more information, please see http://www.fastquery.org/.
 * 
 */

package org.fastquery.web;

import java.util.ArrayList;
import java.util.List;
import java.util.Set;

import org.slf4j.LoggerFactory;
import org.slf4j.Logger;
import org.fastquery.asm.AsmRepository;
import org.fastquery.core.FQueryResourceImpl;
import org.fastquery.core.GenerateRepository;
import org.fastquery.core.Repository;
import org.fastquery.core.Resource;
import org.fastquery.dsm.FastQueryJson;
import org.fastquery.mapper.QueryPool;
import org.fastquery.util.ClassUtil;
import org.fastquery.util.LoadPrperties;

/**
 * 这个类在osgi环境中不能调用
 * 
 * @author xixifeng ([email protected])
 */
class GenerateRepositoryImpl implements GenerateRepository {

	private static final Logger LOG = LoggerFactory.getLogger(GenerateRepositoryImpl.class);

	private FqClassLoader classLoader;
	
	GenerateRepositoryImpl(FqClassLoader classLoader) {
		this.classLoader = classLoader;
		LOG.debug("GenerateRepositoryImpl 已实例化.");
	}

	@SuppressWarnings("unchecked")
	@Override
	public  Class generate(Class repositoryClazz) {
		String name = repositoryClazz.getName() + SUFFIX;

		byte[] bytes = AsmRepository.generateBytes(repositoryClazz);

		/*
		// 把生成的文件存储起来
		try (java.io.FileOutputStream fos = new java.io.FileOutputStream("/data/tmp/" + name + ".class")) {
			fos.write(bytes);
		} catch (Exception e) {
			e.printStackTrace();
		}
		// 把生成的文件存储起来 end
		 */
		return (Class) classLoader.defineClassByName(name, bytes, 0, bytes.length);
	}
	
	void persistent() {

		Resource resource = new FQueryResourceImpl(classLoader);

		// 1). 装载配置文件
		Set fqPropertie = LoadPrperties.load(resource);
		
		List> clses = new ArrayList<>();

		// 3). 批量生成 Repository 的实现类
		Set basePackages;
		for (FastQueryJson fQueryPropertie : fqPropertie) {
			basePackages = fQueryPropertie.getBasePackages();
			for (String basePackage : basePackages) {
				List> classes = ClassUtil.getClasses(basePackage, classLoader);
				clses.addAll(classes);
				// classes.forEach(this::generate)
				for (Class rcls : classes) {
					generate(rcls); // 生成
					QueryPool.put(rcls.getName(), resource);
				}
			}
		}

		// 3). 生成 Repository之后的检测
		AsmRepository.after(clses);
	}
}