Package org.codehaus.groovy.reflection

Class ClassInfo

java.lang.Object
org.codehaus.groovy.reflection.ClassInfo
All Implemented Interfaces:
Finalizable
public class ClassInfo
extends Object
implements Finalizable
Handle for all information we want to keep about the class

This class handles caching internally and its advisable to not store references directly to objects of this class. The static factory method getClassInfo(Class) should be used to retrieve an instance from the cache. Internally the Class associated with a ClassInfo instance is kept as WeakReference, so it not safe to reference and instance without the Class being either strongly or softly reachable.

  • Field Details

  • Method Details

    • getVersion

      public int getVersion()

    • incVersion

      public void incVersion()

    • getModifiedExpando

      public ExpandoMetaClass getModifiedExpando()

    • clearModifiedExpandos

      public static void clearModifiedExpandos()

    • getTheClass

      public final Class<?> getTheClass()
      Returns the Class associated with this ClassInfo.

      This method can return null if the Class is no longer reachable through any strong or soft references. A non-null return value indicates that this ClassInfo is valid.

      Returns:
      the Class associated with this ClassInfo, else null

    • getCachedClass

      public CachedClass getCachedClass()

    • getArtifactClassLoader

      public ClassLoaderForClassArtifacts getArtifactClassLoader()

    • getClassInfo

      public static ClassInfo getClassInfo​(Class cls)

    • remove

      public static void remove​(Class<?> cls)
      Removes a ClassInfo from the cache. This is useful in cases where the Class is parsed from a script, such as when using GroovyClassLoader#parseClass, and is executed for its result but the Class is not retained or cached. Removing the ClassInfo associated with the Class will make the Class and its ClassLoader eligible for garbage collection sooner that it would otherwise.
      Parameters:
      cls - the Class associated with the ClassInfo to remove from cache

    • getAllClassInfo

      public static Collection<ClassInfo> getAllClassInfo()

    • onAllClassInfo

      public static void onAllClassInfo​(ClassInfo.ClassInfoAction action)

    • getStrongMetaClass

      public MetaClass getStrongMetaClass()

    • setStrongMetaClass

      public void setStrongMetaClass​(MetaClass answer)

    • getWeakMetaClass

      public MetaClass getWeakMetaClass()

    • setWeakMetaClass

      public void setWeakMetaClass​(MetaClass answer)

    • getMetaClassForClass

      public MetaClass getMetaClassForClass()

    • getMetaClass

      public final MetaClass getMetaClass()
      Returns the MetaClass for the Class associated with this ClassInfo. If no MetaClass exists one will be created.

      It is not safe to call this method without a Class associated with this ClassInfo. It is advisable to aways retrieve a ClassInfo instance from the cache by using the static factory method getClassInfo(Class) to ensure the referenced Class is strongly reachable.

      Returns:
      a MetaClass instance

    • getMetaClass

      public MetaClass getMetaClass​(Object obj)

    • size

      public static int size()

    • fullSize

      public static int fullSize()

    • lock

      public void lock()

    • unlock

      public void unlock()

    • getPerInstanceMetaClass

      public MetaClass getPerInstanceMetaClass​(Object obj)

    • setPerInstanceMetaClass

      public void setPerInstanceMetaClass​(Object obj, MetaClass metaClass)

    • hasPerInstanceMetaClasses

      public boolean hasPerInstanceMetaClasses()

    • finalizeReference

      public void finalizeReference()
      Specified by:
      finalizeReference in interface Finalizable