org.apache.ibatis.migration.commands.InitializeCommand Maven / Gradle / Ivy

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package org.apache.ibatis.migration.commands;

import org.apache.ibatis.migration.MigrationException;
import org.apache.ibatis.migration.options.SelectedOptions;
import org.apache.ibatis.migration.utils.Util;

import java.io.File;
import java.util.Properties;

public class InitializeCommand extends BaseCommand {
  public InitializeCommand(SelectedOptions selectedOptions) {
    super(selectedOptions);
  }

  public void execute(String... params) {
    final File basePath = paths.getBasePath();
    final File scriptPath = paths.getScriptPath();

    printStream.println("Initializing: " + basePath);

    createDirectoryIfNecessary(basePath);
    ensureDirectoryIsEmpty(basePath);

    createDirectoryIfNecessary(paths.getEnvPath());
    createDirectoryIfNecessary(scriptPath);
    createDirectoryIfNecessary(paths.getDriverPath());

    copyResourceTo("org/apache/ibatis/migration/template_README", Util.file(basePath, "README"));
    copyResourceTo("org/apache/ibatis/migration/template_environment.properties", environmentFile());
    copyResourceTo("org/apache/ibatis/migration/template_bootstrap.sql", Util.file(scriptPath, "bootstrap.sql"));
    copyResourceTo("org/apache/ibatis/migration/template_changelog.sql",
        Util.file(scriptPath, getNextIDAsString() + "_create_changelog.sql"));
    copyResourceTo("org/apache/ibatis/migration/template_migration.sql",
        Util.file(scriptPath, getNextIDAsString() + "_first_migration.sql"),
        new Properties() {
          {
            setProperty("description", "First migration.");
          }
        });
    printStream.println("Done!");
    printStream.println();
  }

  protected void ensureDirectoryIsEmpty(File path) {
    String[] list = path.list();
    if (list.length != 0) {
      for (String entry : list) {
        if (!entry.startsWith(".")) {
          throw new MigrationException(
              "Directory must be empty (.svn etc allowed): " + path.getAbsolutePath());
        }
      }
    }
  }

  protected void createDirectoryIfNecessary(File path) {
    if (!path.exists()) {
      printStream.println("Creating: " + path.getName());
      if (!path.mkdirs()) {
        throw new MigrationException(
            "Could not create directory path for an unknown reason. Make sure you have access to the directory.");
      }
    }
  }


}