com.seajas.search.profiler.validator.ArchiveValidator.java Source code

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Here is the source code for com.seajas.search.profiler.validator.ArchiveValidator.java

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/**
 * Copyright (C) 2013 Seajas, the Netherlands.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as
 * published by the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.seajas.search.profiler.validator;

import java.io.StringReader;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;

import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamSource;

import org.apache.commons.lang.StringUtils;
import org.springframework.stereotype.Component;
import org.springframework.validation.Errors;
import org.springframework.validation.Validator;

import com.seajas.search.profiler.model.command.ArchiveCommand;

/**
 * Archive validator.
 * 
 * @author Jasper van Veghel <jasper@seajas.com>
 */
@Component("archiveValidator")
public class ArchiveValidator implements Validator {
    /**
     * Determine whether this validator supports the command object.
     * 
     * @param klass
     * @return boolean
     */
    @Override
    public boolean supports(final Class<?> klass) {
        return klass.equals(ArchiveCommand.class);
    }

    /**
     * Validate the given command object.
     * 
     * @param command
     * @param errors
     */
    @Override
    public void validate(final Object command, final Errors errors) {
        ArchiveCommand archive = (ArchiveCommand) command;

        if (archive.getAction().equals("add") || archive.getAction().equals("edit")) {
            if (StringUtils.isEmpty(archive.getName()))
                errors.rejectValue("name", "archives.error.no.name");
            if (StringUtils.isEmpty(archive.getDescription()))
                errors.rejectValue("description", "archives.error.no.description");

            if (!StringUtils.isEmpty(archive.getTransformerContent())) {
                StreamSource source = new StreamSource(new StringReader(archive.getTransformerContent()));

                try {
                    TransformerFactory.newInstance().newTransformer(source);
                } catch (Exception e) {
                    errors.rejectValue("transformerContent", "archives.error.invalid.transformation");
                }
            } else
                errors.rejectValue("transformerContent", "archives.error.invalid.transformation");

            if (StringUtils.isEmpty(archive.getInternalLink()))
                errors.rejectValue("internalLink", "archives.error.no.internal.link");

            if (!StringUtils.isEmpty(archive.getDeletionExpression()))
                try {
                    Pattern.compile(archive.getDeletionExpression());
                } catch (PatternSyntaxException e) {
                    errors.rejectValue("deletionExpression", "archives.error.invalid.expression");
                }
            if (!StringUtils.isEmpty(archive.getExclusionExpression()))
                try {
                    Pattern.compile(archive.getExclusionExpression());
                } catch (PatternSyntaxException e) {
                    errors.rejectValue("exclusionExpression", "archives.error.invalid.expression");
                }

            for (String archiveUrl : archive.getArchiveUrls())
                try {
                    new URL(archiveUrl);
                } catch (MalformedURLException e) {
                    errors.rejectValue("archiveUrls", "archives.error.invalid.urls");

                    break;
                }
        }
    }
}