Java 类org.apache.lucene.util.SPIClassIterator 实例源码

项目：lams 文件：AnalysisSPILoader.java

public AnalysisSPILoader(Class<S> clazz, String[] suffixes, ClassLoader classloader) {
  this.clazz = clazz;
  this.suffixes = suffixes;
  // if clazz' classloader is not a parent of the given one, we scan clazz's classloader, too:
  final ClassLoader clazzClassloader = clazz.getClassLoader();
  if (clazzClassloader != null && !SPIClassIterator.isParentClassLoader(clazzClassloader, classloader)) {
    reload(clazzClassloader);
  }
  reload(classloader);
}

项目：lams 文件：AnalysisSPILoader.java

/** 
 * Reloads the internal SPI list from the given {@link ClassLoader}.
 * Changes to the service list are visible after the method ends, all
 * iterators (e.g., from {@link #availableServices()},...) stay consistent. 
 * 
 * <p><b>NOTE:</b> Only new service providers are added, existing ones are
 * never removed or replaced.
 * 
 * <p><em>This method is expensive and should only be called for discovery
 * of new service providers on the given classpath/classloader!</em>
 */
public synchronized void reload(ClassLoader classloader) {
  final LinkedHashMap<String,Class<? extends S>> services =
    new LinkedHashMap<>(this.services);
  final SPIClassIterator<S> loader = SPIClassIterator.get(clazz, classloader);
  while (loader.hasNext()) {
    final Class<? extends S> service = loader.next();
    final String clazzName = service.getSimpleName();
    String name = null;
    for (String suffix : suffixes) {
      if (clazzName.endsWith(suffix)) {
        name = clazzName.substring(0, clazzName.length() - suffix.length()).toLowerCase(Locale.ROOT);
        break;
      }
    }
    if (name == null) {
      throw new ServiceConfigurationError("The class name " + service.getName() +
        " has wrong suffix, allowed are: " + Arrays.toString(suffixes));
    }
    // only add the first one for each name, later services will be ignored
    // this allows to place services before others in classpath to make 
    // them used instead of others
    //
    // TODO: Should we disallow duplicate names here?
    // Allowing it may get confusing on collisions, as different packages
    // could contain same factory class, which is a naming bug!
    // When changing this be careful to allow reload()!
    if (!services.containsKey(name)) {
      services.put(name, service);
    }
  }
  this.services = Collections.unmodifiableMap(services);
}

项目：search 文件：AnalysisSPILoader.java

public AnalysisSPILoader(Class<S> clazz, String[] suffixes, ClassLoader classloader) {
  this.clazz = clazz;
  this.suffixes = suffixes;
  // if clazz' classloader is not a parent of the given one, we scan clazz's classloader, too:
  final ClassLoader clazzClassloader = clazz.getClassLoader();
  if (clazzClassloader != null && !SPIClassIterator.isParentClassLoader(clazzClassloader, classloader)) {
    reload(clazzClassloader);
  }
  reload(classloader);
}

项目：search 文件：AnalysisSPILoader.java

/** 
 * Reloads the internal SPI list from the given {@link ClassLoader}.
 * Changes to the service list are visible after the method ends, all
 * iterators (e.g., from {@link #availableServices()},...) stay consistent. 
 * 
 * <p><b>NOTE:</b> Only new service providers are added, existing ones are
 * never removed or replaced.
 * 
 * <p><em>This method is expensive and should only be called for discovery
 * of new service providers on the given classpath/classloader!</em>
 */
public synchronized void reload(ClassLoader classloader) {
  final LinkedHashMap<String,Class<? extends S>> services =
    new LinkedHashMap<>(this.services);
  final SPIClassIterator<S> loader = SPIClassIterator.get(clazz, classloader);
  while (loader.hasNext()) {
    final Class<? extends S> service = loader.next();
    final String clazzName = service.getSimpleName();
    String name = null;
    for (String suffix : suffixes) {
      if (clazzName.endsWith(suffix)) {
        name = clazzName.substring(0, clazzName.length() - suffix.length()).toLowerCase(Locale.ROOT);
        break;
      }
    }
    if (name == null) {
      throw new ServiceConfigurationError("The class name " + service.getName() +
        " has wrong suffix, allowed are: " + Arrays.toString(suffixes));
    }
    // only add the first one for each name, later services will be ignored
    // this allows to place services before others in classpath to make 
    // them used instead of others
    //
    // TODO: Should we disallow duplicate names here?
    // Allowing it may get confusing on collisions, as different packages
    // could contain same factory class, which is a naming bug!
    // When changing this be careful to allow reload()!
    if (!services.containsKey(name)) {
      services.put(name, service);
    }
  }
  this.services = Collections.unmodifiableMap(services);
}

项目：NYBC 文件：AnalysisSPILoader.java

public AnalysisSPILoader(Class<S> clazz, String[] suffixes, ClassLoader classloader) {
  this.clazz = clazz;
  this.suffixes = suffixes;
  // if clazz' classloader is not a parent of the given one, we scan clazz's classloader, too:
  final ClassLoader clazzClassloader = clazz.getClassLoader();
  if (clazzClassloader != null && !SPIClassIterator.isParentClassLoader(clazzClassloader, classloader)) {
    reload(clazzClassloader);
  }
  reload(classloader);
}

项目：NYBC 文件：AnalysisSPILoader.java

/** 
 * Reloads the internal SPI list from the given {@link ClassLoader}.
 * Changes to the service list are visible after the method ends, all
 * iterators (e.g., from {@link #availableServices()},...) stay consistent. 
 * 
 * <p><b>NOTE:</b> Only new service providers are added, existing ones are
 * never removed or replaced.
 * 
 * <p><em>This method is expensive and should only be called for discovery
 * of new service providers on the given classpath/classloader!</em>
 */
public synchronized void reload(ClassLoader classloader) {
  final LinkedHashMap<String,Class<? extends S>> services =
    new LinkedHashMap<String,Class<? extends S>>(this.services);
  final SPIClassIterator<S> loader = SPIClassIterator.get(clazz, classloader);
  while (loader.hasNext()) {
    final Class<? extends S> service = loader.next();
    final String clazzName = service.getSimpleName();
    String name = null;
    for (String suffix : suffixes) {
      if (clazzName.endsWith(suffix)) {
        name = clazzName.substring(0, clazzName.length() - suffix.length()).toLowerCase(Locale.ROOT);
        break;
      }
    }
    if (name == null) {
      throw new ServiceConfigurationError("The class name " + service.getName() +
        " has wrong suffix, allowed are: " + Arrays.toString(suffixes));
    }
    // only add the first one for each name, later services will be ignored
    // this allows to place services before others in classpath to make 
    // them used instead of others
    //
    // TODO: Should we disallow duplicate names here?
    // Allowing it may get confusing on collisions, as different packages
    // could contain same factory class, which is a naming bug!
    // When changing this be careful to allow reload()!
    if (!services.containsKey(name)) {
      services.put(name, service);
    }
  }
  this.services = Collections.unmodifiableMap(services);
}