Package com.cedarsoft.configuration.xml

Source Code of com.cedarsoft.configuration.xml.XmlConfigurationManager

/**
* Copyright (C) cedarsoft GmbH.
*
* Licensed under the GNU General Public License version 3 (the "License")
* with Classpath Exception; you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
*         http://www.cedarsoft.org/gpl3ce
*         (GPL 3 with Classpath Exception)
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3 only, as
* published by the Free Software Foundation. cedarsoft GmbH designates this
* particular file as subject to the "Classpath" exception as provided
* by cedarsoft GmbH in the LICENSE file that accompanied this code.
*
* This code 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
* version 3 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 3 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
* or visit www.cedarsoft.com if you need additional information or
* have any questions.
*/

package com.cedarsoft.configuration.xml;

import com.google.inject.Inject;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.HierarchicalConfiguration;
import org.apache.commons.configuration.XMLConfiguration;
import org.jetbrains.annotations.NonNls;
import org.jetbrains.annotations.NotNull;

/**
* Configures configurations
*/
public class XmlConfigurationManager {
  @NonNls
  private static final String MODULES_KEY = "modules";

  @NotNull
  private final XMLConfiguration configuration;

  @Inject
  public XmlConfigurationManager( @NotNull XMLConfiguration configuration ) {
    this.configuration = configuration;

    if ( this.configuration.getFileName() != null ) {
      Runtime.getRuntime().addShutdownHook( new Thread( new Runnable() {
        @Override
        public void run() {
          try {
            XmlConfigurationManager.this.configuration.save();
          } catch ( ConfigurationException e ) {
            throw new RuntimeException( e );
          }
        }
      } ) );
    }
  }

  /**
   * Returns the configuration for the given moduleType
   *
   * @param moduleType the moduleType
   * @return the configuration for the given  moduleType
   */
  @NotNull
  public HierarchicalConfiguration getModuleConfiguration( @NotNull Class<?> moduleType ) {
    String moduleTypeName = moduleType.getName().replaceAll( "\\$", "." );
    HierarchicalConfiguration modulesConfiguration = getModulesConfiguration();
    try {
      return modulesConfiguration.configurationAt( moduleTypeName );
    } catch ( IllegalArgumentException ignore ) {
      modulesConfiguration.addProperty( moduleTypeName, "" );
      return modulesConfiguration.configurationAt( moduleTypeName );
    }
  }

  @NotNull
  HierarchicalConfiguration getModulesConfiguration() {
    try {
      return configuration.configurationAt( MODULES_KEY );
    } catch ( IllegalArgumentException ignore ) {
      configuration.addProperty( MODULES_KEY, "" );
      return configuration.configurationAt( MODULES_KEY );
    }
  }

  @NotNull
  public HierarchicalConfiguration getConfiguration() {
    return configuration;
  }
}
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