org.wte4j.examples.showcase.server.hsql.ShowCaseDbInitializer.java Source code

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Here is the source code for org.wte4j.examples.showcase.server.hsql.ShowCaseDbInitializer.java

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/**
 * Copyright (C) 2015 Born Informatik AG (www.born.ch)
 *
 * 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.wte4j.examples.showcase.server.hsql;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

import org.springframework.context.support.StaticApplicationContext;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.ResourcePatternResolver;

public class ShowCaseDbInitializer {

    private ResourcePatternResolver resourceLoader;

    public ShowCaseDbInitializer(ResourcePatternResolver resourceLoader) {
        this.resourceLoader = resourceLoader;
    }

    /**
     * Initialize Hslq Database with name wte4-showcase
     * 
     * @param dataBaseLocation
     *            - path in the file system where the hsql database file shall
     *            be stored
     * @param overwrite
     *            - if true and the database file exists the files will be
     *            replaced
     * @return
     */
    public HsqlServerBean createDatabase(Path dataBaseLocation, boolean overwrite) {
        createDateBaseFiles(dataBaseLocation, overwrite);
        return new HsqlServerBean(dataBaseLocation, "wte4j-showcase");
    }

    void createDateBaseFiles(Path dataBaseLocation, boolean overide) {
        Path hsqlScript = dataBaseLocation.resolve("wte4j-showcase.script");
        if (overide || !Files.exists(hsqlScript)) {
            try {
                if (!Files.exists(dataBaseLocation)) {
                    Files.createDirectories(dataBaseLocation);
                }
                Resource[] resources = resourceLoader.getResources("classpath:/db/*");
                for (Resource resource : resources) {
                    Path filePath = dataBaseLocation.resolve(resource.getFilename());
                    File source = resource.getFile();
                    Files.copy(source.toPath(), filePath, StandardCopyOption.REPLACE_EXISTING);
                }
            } catch (IOException e) {
                throw new IllegalArgumentException("can not copy database files", e);
            }
        }
    }

    public static void main(String... args) {
        ShowCaseDbInitializer initializer = new ShowCaseDbInitializer(new StaticApplicationContext());
        boolean overide = false;
        if (args.length == 2) {
            overide = Boolean.parseBoolean(args[1]);
        }
        HsqlServerBean hsqlServerBean = initializer.createDatabase(Paths.get(args[0]), overide);
        hsqlServerBean.startDatabase();
    }

}