org.springframework.core.type.classreading

类 CachingMetadataReaderFactory

java.lang.Object

org.springframework.core.type.classreading.SimpleMetadataReaderFactory

org.springframework.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 Spring Resource handle (i.e. per ".class" file).

从以下版本开始:

2.5

作者:

Juergen Hoeller, Costin Leau

字段概要

字段

限定符和类型	字段和说明
static int	DEFAULT_CACHE_LIMIT Default maximum number of entries for a local MetadataReader cache: 256

构造器概要

构造器

构造器和说明
CachingMetadataReaderFactory() Create a new CachingMetadataReaderFactory for the default class loader, using a local resource cache.
CachingMetadataReaderFactory(ClassLoader classLoader) Create a new CachingMetadataReaderFactory for the given ClassLoader, using a local resource cache.
CachingMetadataReaderFactory(ResourceLoader resourceLoader) Create a new CachingMetadataReaderFactory for the given ResourceLoader, using a shared resource cache if supported or a local resource cache otherwise.

方法概要

限定符和类型	方法和说明
void	clearCache() Clear the local MetadataReader cache, if any, removing all cached class metadata.
int	getCacheLimit() Return the maximum number of entries for the MetadataReader cache.
MetadataReader	getMetadataReader(Resource resource) Obtain a MetadataReader for the given resource.
void	setCacheLimit(int cacheLimit) Specify the maximum number of entries for the MetadataReader cache.

从类继承的方法 org.springframework.core.type.classreading.SimpleMetadataReaderFactory

getMetadataReader, getResourceLoader

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

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:

常量字段值

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 Spring ResourceLoader to use (also determines the ClassLoader to use)

另请参阅:

DefaultResourceLoader.getResourceCache(java.lang.Class<T>)

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.