org.opensingular.form.wicket.mapper.attachment.upload.ServletFileUploadFactory.java Source code

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Here is the source code for org.opensingular.form.wicket.mapper.attachment.upload.ServletFileUploadFactory.java

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/*
 * Copyright (C) 2016 Singular Studios (a.k.a Atom Tecnologia) - www.opensingular.com
 *
 * 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 org.opensingular.form.wicket.mapper.attachment.upload;

import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.opensingular.form.wicket.mapper.attachment.upload.info.UploadInfo;

import java.io.Serializable;

public class ServletFileUploadFactory implements Serializable {

    private final FileUploadConfig config;

    public ServletFileUploadFactory(FileUploadConfig config) {
        this.config = config;
    }

    public ServletFileUpload makeServletFileUpload(UploadInfo uploadInfo) {
        final ServletFileUpload servletFileUpload = new ServletFileUpload(new DiskFileItemFactory());

        servletFileUpload.setFileSizeMax(resolveMax(uploadInfo.getMaxFileSize(), config.getDefaultMaxFileSize(),
                config.getGlobalMaxFileSize()));

        servletFileUpload.setSizeMax(resolveMax(uploadInfo.getMaxFileSize() * uploadInfo.getMaxFileCount(),
                config.getDefaultMaxRequestSize(), config.getGlobalMaxRequestSize()));

        return servletFileUpload;
    }

    private static long resolveMax(long specifiedMax, long defaultMax, long globalMax) {
        return Math.min((specifiedMax > 0) ? specifiedMax : defaultMax, globalMax);
    }

}