程序包 cn.taketoday.core.type.classreading

类 CachingMetadataReaderFactory

java.lang.Object
cn.taketoday.core.type.classreading.SimpleMetadataReaderFactory
cn.taketoday.core.type.classreading.CachingMetadataReaderFactory
所有已实现的接口:
MetadataReaderFactory
public class CachingMetadataReaderFactory extends SimpleMetadataReaderFactory
Caching implementation of the MetadataReaderFactory interface, caching a MetadataReader instance per Resource handle (i.e. per ".class" file).
从以下版本开始:
4.0
作者:
Juergen Hoeller, Costin Leau

  • 字段详细资料

    • DEFAULT_CACHE_LIMIT

      public static final int DEFAULT_CACHE_LIMIT
      Default maximum number of entries for a local MetadataReader cache: 256.
      另请参阅:

    • metadataReaderCache

      @Nullable private Map<Resource,MetadataReader> metadataReaderCache
      MetadataReader cache: either local or shared at the ResourceLoader level.

  • 构造器详细资料

    • CachingMetadataReaderFactory

      public CachingMetadataReaderFactory()
      Create a new CachingMetadataReaderFactory for the default class loader, using a local resource cache.

    • CachingMetadataReaderFactory

      public CachingMetadataReaderFactory(@Nullable ClassLoader classLoader)
      Create a new CachingMetadataReaderFactory for the given ClassLoader, using a local resource cache.
      参数:
      classLoader - the ClassLoader to use

    • CachingMetadataReaderFactory

      public CachingMetadataReaderFactory(@Nullable ResourceLoader resourceLoader)
      Create a new CachingMetadataReaderFactory for the given ResourceLoader, using a shared resource cache if supported or a local resource cache otherwise.
      参数:
      resourceLoader - the ResourceLoader to use (also determines the ClassLoader to use)
      另请参阅:

  • 方法详细资料

    • setCacheLimit

      public void setCacheLimit(int cacheLimit)
      Specify the maximum number of entries for the MetadataReader cache.

      Default is 256 for a local cache, whereas a shared cache is typically unbounded. This method enforces a local resource cache, even if the ResourceLoader supports a shared resource cache.

    • getCacheLimit

      public int getCacheLimit()
      Return the maximum number of entries for the MetadataReader cache.

    • getMetadataReader

      public MetadataReader getMetadataReader(Resource resource) throws IOException
      从接口复制的说明: MetadataReaderFactory
      Obtain a MetadataReader for the given resource.
      指定者:
      getMetadataReader 在接口中 MetadataReaderFactory
      覆盖:
      getMetadataReader 在类中 SimpleMetadataReaderFactory
      参数:
      resource - the resource (pointing to a ".class" file)
      返回:
      a holder for the ClassReader instance (never null)
      抛出:
      IOException - in case of I/O failure

    • clearCache

      public void clearCache()
      Clear the local MetadataReader cache, if any, removing all cached class metadata.