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Android-Download/Aria/src/main/java/com/arialyy/aria/util/DbDataHelper.java

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3.8 KiB

/*
* Copyright (C) 2016 AriaLyy(https://github.com/AriaLyy/Aria)
*
* 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
*
* 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.
*/
package com.arialyy.aria.util;
import com.arialyy.aria.core.common.RecordWrapper;
import com.arialyy.aria.core.common.TaskRecord;
import com.arialyy.aria.core.download.DGEntityWrapper;
import com.arialyy.aria.core.download.DownloadEntity;
import com.arialyy.aria.core.download.DownloadGroupEntity;
import com.arialyy.aria.orm.DbEntity;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
/**
* 数据库帮助类
*/
public class DbDataHelper {
/**
* 获取任务记录
*
* @param filePath 文件地址
* @return 没有记录返回null,有记录则返回任务记录
*/
public static TaskRecord getTaskRecord(String filePath) {
List<RecordWrapper> records =
DbEntity.findRelationData(RecordWrapper.class, "TaskRecord.filePath=?", filePath);
if (records == null || records.size() == 0) {
return null;
}
return records.get(0).taskRecord;
}
/**
* 获取组合任务实体 如果数据库不存在该实体,则新创建一个新的任务组实体
*
* @param groupName 组合任务名称
* @param urls 子任务url列表
*/
public static DownloadGroupEntity getHttpDGEntity(String groupName, List<String> urls) {
List<DGEntityWrapper> wrapper =
DbEntity.findRelationData(DGEntityWrapper.class, "DownloadGroupEntity.groupName=?",
groupName);
DownloadGroupEntity groupEntity;
if (wrapper != null && !wrapper.isEmpty()) {
groupEntity = wrapper.get(0).groupEntity;
if (groupEntity == null) {
groupEntity = new DownloadGroupEntity();
groupEntity.setSubEntities(createHttpSubTask(groupName, urls));
}
} else {
groupEntity = new DownloadGroupEntity();
groupEntity.setSubEntities(createHttpSubTask(groupName, urls));
}
groupEntity.setGroupName(groupName);
groupEntity.setUrls(urls);
return groupEntity;
}
/**
* 创建HTTP子任务实体
*/
private static List<DownloadEntity> createHttpSubTask(String groupName, List<String> urls) {
List<DownloadEntity> list = new ArrayList<>();
for (int i = 0, len = urls.size(); i < len; i++) {
String url = urls.get(i);
DownloadEntity entity = new DownloadEntity();
entity.setUrl(url);
entity.setDownloadPath(groupName + "_" + i);
int lastIndex = url.lastIndexOf(File.separator);
entity.setFileName(url.substring(lastIndex + 1));
entity.setGroupName(groupName);
entity.setGroupChild(true);
list.add(entity);
}
return list;
}
/**
* 通过Ftp下载地址获取组合任务实体
*
* @param ftpUrl ftp下载地址
*/
public static DownloadGroupEntity getFtpDGEntity(String ftpUrl) {
List<DGEntityWrapper> wrapper =
DbEntity.findRelationData(DGEntityWrapper.class, "DownloadGroupEntity.groupName=?",
ftpUrl);
DownloadGroupEntity groupEntity;
if (wrapper != null && !wrapper.isEmpty()) {
groupEntity = wrapper.get(0).groupEntity;
if (groupEntity == null) {
groupEntity = new DownloadGroupEntity();
}
} else {
groupEntity = new DownloadGroupEntity();
}
groupEntity.setGroupName(ftpUrl);
return groupEntity;
}
}