How to use org.jfree.base.modules

/**
 * Returns the packageManager instance of the package manager.
 *
 * @return The package manager.
 */
public synchronized PackageManager getPackageManager() {
  if (this.packageManager == null) {
    this.packageManager = PackageManager.createInstance(this);
  }
  return this.packageManager;
}

/**
 * Checks, whether the reader contains a next line. Returns false if the end
 * of the stream has been reached.
 *
 * @return true, if there is a next line to read, false otherwise.
 * @throws IOException if an error occures.
 */
public boolean hasNext() throws IOException
{
 if (this.buffer == null)
 {
  this.buffer = readLine();
 }
 return this.buffer != null;
}

/**
 * Returns the modules subsystem. If this module is not part of an subsystem
 * then return the modules name, but never null.
 *
 * @return the name of the subsystem.
 */
public String getSubSystem()
{
 if (this.subsystem == null)
 {
  return getName();
 }
 return this.subsystem;
}

/**
 * Checks, whether a certain module is available.
 *
 * @param moduleDescription the module description of the desired module.
 * @return true, if the module is available and the version of the module
 *         is compatible, false otherwise.
 */
public boolean isModuleAvailable(final ModuleInfo moduleDescription) {
  final PackageState[] packageStates =
    (PackageState[]) this.modules.toArray(new PackageState[this.modules.size()]);
  for (int i = 0; i < packageStates.length; i++) {
    final PackageState state = packageStates[i];
    if (state.getModule().getModuleClass().equals(moduleDescription.getModuleClass())) {
      return (state.getState() == PackageState.STATE_INITIALIZED);
    }
  }
  return false;
}

/**
 * Checks, whether the next line in the reader is a value line.
 *
 * @param reader from where to read the lines.
 * @return true, if the next line is a value line, false otherwise.
 * @throws IOException if an IO error occurs.
 */
private boolean isNextLineValueLine (final ReaderHelper reader) throws IOException
{
 if (reader.hasNext() == false)
 {
  return false;
 }
 final String firstLine = reader.next();
 if (firstLine == null)
 {
  return false;
 }
 if (parseKey(firstLine) != null)
 {
  reader.pushBack(firstLine);
  return false;
 }
 reader.pushBack(firstLine);
 return true;
}

/**
 * Adds a module to the package manager.
 * Once all modules are added, you have to call initializeModules()
 * to configure and initialize the new modules.
 *
 * @param modClass the module class
 */
public synchronized void addModule(final String modClass) {
  final ArrayList loadModules = new ArrayList();
  final ModuleInfo modInfo = new DefaultModuleInfo
    (modClass, null, null, null);
  if (loadModule(modInfo, new ArrayList(), loadModules, false)) {
    for (int i = 0; i < loadModules.size(); i++) {
      final Module mod = (Module) loadModules.get(i);
      this.modules.add(new PackageState(mod));
    }
  }
}

/**
 * Returns a basic string representation of this SortModule. This
 * should be used for debugging purposes only.
 * @see java.lang.Object#toString()
 *
 * @return a string representation of this module.
 */
public String toString ()
{
 final StringBuffer buffer = new StringBuffer();
 buffer.append("SortModule: ");
 buffer.append(this.position);
 buffer.append(" ");
 buffer.append(this.state.getModule().getName());
 buffer.append(" ");
 buffer.append(this.state.getModule().getModuleClass());
 return buffer.toString();
}

/**
 * Returns an array of the currently active modules. The module definition
 * returned contain all known modules, including buggy and unconfigured
 * instances.
 *
 * @return the modules.
 */
public Module[] getAllModules() {
  final Module[] mods = new Module[this.modules.size()];
  for (int i = 0; i < this.modules.size(); i++) {
    final PackageState state = (PackageState) this.modules.get(i);
    mods[i] = state.getModule();
  }
  return mods;
}

/**
 * Checks, whether a certain module is available.
 *
 * @param moduleDescription the module description of the desired module.
 * @return true, if the module is available and the version of the module
 *         is compatible, false otherwise.
 */
public boolean isModuleAvailable(final ModuleInfo moduleDescription) {
  final PackageState[] packageStates =
    (PackageState[]) this.modules.toArray(new PackageState[this.modules.size()]);
  for (int i = 0; i < packageStates.length; i++) {
    final PackageState state = packageStates[i];
    if (state.getModule().getModuleClass().equals(moduleDescription.getModuleClass())) {
      return (state.getState() == PackageState.STATE_INITIALIZED);
    }
  }
  return false;
}

/**
 * Adds a module to the package manager.
 * Once all modules are added, you have to call initializeModules()
 * to configure and initialize the new modules.
 *
 * @param modClass the module class
 */
public synchronized void addModule(final String modClass) {
  final ArrayList loadModules = new ArrayList();
  final ModuleInfo modInfo = new DefaultModuleInfo
    (modClass, null, null, null);
  if (loadModule(modInfo, new ArrayList(), loadModules, false)) {
    for (int i = 0; i < loadModules.size(); i++) {
      final Module mod = (Module) loadModules.get(i);
      this.modules.add(new PackageState(mod));
    }
  }
}

/**
 * Returns a basic string representation of this SortModule. This
 * should be used for debugging purposes only.
 * @see java.lang.Object#toString()
 *
 * @return a string representation of this module.
 */
public String toString ()
{
 final StringBuffer buffer = new StringBuffer();
 buffer.append("SortModule: ");
 buffer.append(this.position);
 buffer.append(" ");
 buffer.append(this.state.getModule().getName());
 buffer.append(" ");
 buffer.append(this.state.getModule().getModuleClass());
 return buffer.toString();
}

/**
 * Returns the packageManager instance of the package manager.
 *
 * @return The package manager.
 */
public synchronized PackageManager getPackageManager() {
  if (this.packageManager == null) {
    this.packageManager = PackageManager.createInstance(this);
  }
  return this.packageManager;
}

/**
 * Checks, whether the reader contains a next line. Returns false if the end
 * of the stream has been reached.
 *
 * @return true, if there is a next line to read, false otherwise.
 * @throws IOException if an error occures.
 */
public boolean hasNext() throws IOException
{
 if (this.buffer == null)
 {
  this.buffer = readLine();
 }
 return this.buffer != null;
}

/**
 * Returns the modules subsystem. If this module is not part of an subsystem
 * then return the modules name, but never null.
 *
 * @return the name of the subsystem.
 */
public String getSubSystem()
{
 if (this.subsystem == null)
 {
  return getName();
 }
 return this.subsystem;
}

/**
 * Checks, whether a certain module is available.
 *
 * @param moduleDescription the module description of the desired module.
 * @return true, if the module is available and the version of the module
 *         is compatible, false otherwise.
 */
public boolean isModuleAvailable(final ModuleInfo moduleDescription) {
  final PackageState[] packageStates =
    (PackageState[]) this.modules.toArray(new PackageState[this.modules.size()]);
  for (int i = 0; i < packageStates.length; i++) {
    final PackageState state = packageStates[i];
    if (state.getModule().getModuleClass().equals(moduleDescription.getModuleClass())) {
      return (state.getState() == PackageState.STATE_INITIALIZED);
    }
  }
  return false;
}

/**
 * Adds a module to the package manager.
 * Once all modules are added, you have to call initializeModules()
 * to configure and initialize the new modules.
 *
 * @param modClass the module class
 */
public synchronized void addModule(final String modClass) {
  final ArrayList loadModules = new ArrayList();
  final ModuleInfo modInfo = new DefaultModuleInfo
    (modClass, null, null, null);
  if (loadModule(modInfo, new ArrayList(), loadModules, false)) {
    for (int i = 0; i < loadModules.size(); i++) {
      final Module mod = (Module) loadModules.get(i);
      this.modules.add(new PackageState(mod));
    }
  }
}

/**
 * Returns a basic string representation of this SortModule. This
 * should be used for debugging purposes only.
 * @see java.lang.Object#toString()
 *
 * @return a string representation of this module.
 */
public String toString ()
{
 final StringBuffer buffer = new StringBuffer();
 buffer.append("SortModule: ");
 buffer.append(this.position);
 buffer.append(" ");
 buffer.append(this.state.getModule().getName());
 buffer.append(" ");
 buffer.append(this.state.getModule().getModuleClass());
 return buffer.toString();
}

/**
 * Returns the packageManager instance of the package manager.
 *
 * @return The package manager.
 */
public synchronized PackageManager getPackageManager() {
  if (this.packageManager == null) {
    this.packageManager = PackageManager.createInstance(this);
  }
  return this.packageManager;
}

/**
 * Checks, whether the reader contains a next line. Returns false if the end
 * of the stream has been reached.
 *
 * @return true, if there is a next line to read, false otherwise.
 * @throws IOException if an error occures.
 */
public boolean hasNext() throws IOException
{
 if (this.buffer == null)
 {
  this.buffer = readLine();
 }
 return this.buffer != null;
}

/**
 * Returns the modules subsystem. If this module is not part of an subsystem
 * then return the modules name, but never null.
 *
 * @return the name of the subsystem.
 */
public String getSubSystem()
{
 if (this.subsystem == null)
 {
  return getName();
 }
 return this.subsystem;
}