Spring Framework

org.springframework.core.type.classreading
Class CachingMetadataReaderFactory

java.lang.Object
  extended by org.springframework.core.type.classreading.SimpleMetadataReaderFactory
      extended by org.springframework.core.type.classreading.CachingMetadataReaderFactory
All Implemented Interfaces:
MetadataReaderFactory

public class CachingMetadataReaderFactory
extends SimpleMetadataReaderFactory

Caching implementation of the MetadataReaderFactory interface, caching MetadataReader per Spring Resource handle (i.e. per ".class" file).

Since:
2.5
Author:
Juergen Hoeller, Costin Leau

Field Summary
static int DEFAULT_CACHE_LIMIT
          Default maximum number of entries for the MetadataReader cache: 256
 
Constructor Summary
CachingMetadataReaderFactory()
          Create a new CachingMetadataReaderFactory for the default class loader.
CachingMetadataReaderFactory(java.lang.ClassLoader classLoader)
          Create a new CachingMetadataReaderFactory for the given class loader.
CachingMetadataReaderFactory(ResourceLoader resourceLoader)
          Create a new CachingMetadataReaderFactory for the given resource loader.
 
Method Summary
 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.
 
Methods inherited from class org.springframework.core.type.classreading.SimpleMetadataReaderFactory
getMetadataReader, getResourceLoader
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DEFAULT_CACHE_LIMIT

public static final int DEFAULT_CACHE_LIMIT
Default maximum number of entries for the MetadataReader cache: 256

See Also:
Constant Field Values
Constructor Detail

CachingMetadataReaderFactory

public CachingMetadataReaderFactory()
Create a new CachingMetadataReaderFactory for the default class loader.


CachingMetadataReaderFactory

public CachingMetadataReaderFactory(ResourceLoader resourceLoader)
Create a new CachingMetadataReaderFactory for the given resource loader.

Parameters:
resourceLoader - the Spring ResourceLoader to use (also determines the ClassLoader to use)

CachingMetadataReaderFactory

public CachingMetadataReaderFactory(java.lang.ClassLoader classLoader)
Create a new CachingMetadataReaderFactory for the given class loader.

Parameters:
classLoader - the ClassLoader to use
Method Detail

setCacheLimit

public void setCacheLimit(int cacheLimit)
Specify the maximum number of entries for the MetadataReader cache. Default is 256.


getCacheLimit

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


getMetadataReader

public MetadataReader getMetadataReader(Resource resource)
                                 throws java.io.IOException
Description copied from interface: MetadataReaderFactory
Obtain a MetadataReader for the given resource.

Specified by:
getMetadataReader in interface MetadataReaderFactory
Overrides:
getMetadataReader in class SimpleMetadataReaderFactory
Parameters:
resource - the resource (pointing to a ".class" file)
Returns:
a holder for the ClassReader instance (never null)
Throws:
java.io.IOException - in case of I/O failure

Spring Framework