com.slyak.services.file.service.DefaultFileService.java Source code

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Here is the source code for com.slyak.services.file.service.DefaultFileService.java

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/*
 *  Copyright 2017 the original author or authors.
 *
 *  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.slyak.services.file.service;

import com.slyak.services.file.domain.FileInfo;
import com.slyak.services.file.domain.VirtualFile;
import com.slyak.services.file.event.FilePostStoreEvent;
import com.slyak.services.file.event.FilePreStoreEvent;
import com.slyak.services.file.repository.FileRepository;
import lombok.Setter;
import org.springframework.context.ApplicationEventPublisher;
import org.springframework.context.ApplicationEventPublisherAware;
import org.springframework.util.CollectionUtils;

import java.io.File;
import java.util.List;

/**
 * .
 *
 * @author stormning on 2017/1/6.
 */
public class DefaultFileService implements FileService, ApplicationEventPublisherAware {

    @Setter
    private FileRepository fileRepository;

    private ApplicationEventPublisher applicationEventPublisher;

    @Setter
    private StorageService storageService;

    @Override
    public FileInfo store(FileInfo fileInfo) {
        applicationEventPublisher.publishEvent(new FilePreStoreEvent(fileInfo));
        fileInfo.setKey(storageService.store(fileInfo.getInputStream()));
        fileRepository.save(fileInfo);
        applicationEventPublisher.publishEvent(new FilePostStoreEvent(toVirtualFile(fileInfo)));
        return fileInfo;
    }

    @Override
    public VirtualFile toVirtualFile(FileInfo fileInfo) {
        return new DefaultVirtualFile(fileInfo);
    }

    @Override
    public VirtualFile toVirtualFile(Long id) {
        return toVirtualFile(fileRepository.findOne(id));
    }

    @Override
    public FileInfo getOwnerFile(String owner) {
        List<FileInfo> infos = getOwnerFiles(owner);
        if (CollectionUtils.isEmpty(infos)) {
            return null;
        }
        return infos.get(0);
    }

    @Override
    public List<FileInfo> getOwnerFiles(String owner) {
        return fileRepository.findByOwner(owner);
    }

    @Override
    public void setApplicationEventPublisher(ApplicationEventPublisher applicationEventPublisher) {
        this.applicationEventPublisher = applicationEventPublisher;
    }

    class DefaultVirtualFile implements VirtualFile {

        private FileInfo fileInfo;

        public DefaultVirtualFile(FileInfo fileInfo) {
            this.fileInfo = fileInfo;
        }

        @Override
        public FileInfo getFileInfo() {
            return this.fileInfo;
        }

        @Override
        public File getNativeFile() {
            return storageService.restore(fileInfo.getKey());
        }
    }

}