csns.web.validator.ItemValidator.java Source code

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Here is the source code for csns.web.validator.ItemValidator.java

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/*
 * This file is part of the CSNetwork Services (CSNS) project.
 * 
 * Copyright 2014, Chengyu Sun (csun@calstatela.edu).
 * 
 * CSNS is free software: you can redistribute it and/or modify it under the
 * terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 * 
 * CSNS is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
 * more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with CSNS. If not, see http://www.gnu.org/licenses/agpl.html.
 */
package csns.web.validator;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;
import org.springframework.web.multipart.MultipartFile;

import csns.model.core.Resource;
import csns.model.core.ResourceType;
import csns.model.site.Item;

@Component
public class ItemValidator implements Validator {

    @Autowired
    ResourceValidator resourceValidator;

    @Override
    public boolean supports(Class<?> clazz) {
        return Item.class.isAssignableFrom(clazz);
    }

    @Override
    public void validate(Object target, Errors errors) {
        Item item = (Item) target;

        errors.pushNestedPath("resource");
        ValidationUtils.invokeValidator(resourceValidator, item.getResource(), errors);
        errors.popNestedPath();
    }

    /**
     * Controllers should call this method instead of validate(Object,Errors) so
     * the file field can be validated as well.
     */
    public void validate(Item item, MultipartFile uploadedFile, Errors errors) {
        validate(item, errors);

        Resource resource = item.getResource();
        if (resource.getType() == ResourceType.FILE && resource.getFile() == null
                && (uploadedFile == null || uploadedFile.isEmpty()))
            errors.rejectValue("resource.file", "error.field.required");
    }

}