Module org.eclipse.persistence.core
Package org.eclipse.persistence.internal.helper

Class ConcurrentFixedCache

java.lang.Object
org.eclipse.persistence.internal.helper.ConcurrentFixedCache
All Implemented Interfaces:
Serializable
public class ConcurrentFixedCache extends Object implements Serializable
Provide a concurrent fixed size caching mechanism. This is used for caching EJBQL parsed queries, Update calls, and other places a fixed size cache is needed. The default fixed size is 100.
See Also:

  • Field Details

    • maxSize

      protected int maxSize

    • cache

      protected Map cache

  • Constructor Details

    • ConcurrentFixedCache

      public ConcurrentFixedCache()
      Create a new concurrent cache, with a fixed size of 100.

    • ConcurrentFixedCache

      public ConcurrentFixedCache(int maxSize)
      Create a new concurrent cache, with the max size.

  • Method Details

    • getMaxSize

      public int getMaxSize()
      Return the fixed size of the parse cache.

    • setMaxSize

      public void setMaxSize(int maxSize)
      Set the fixed size of the parse cache. When the size is exceeded, subsequent EJBQL will not be cached. The default size is 100;

    • get

      public Object get(Object key)
      Return the pre-parsed query that represents the EJBQL string. If the EJBQL has not been cached, null is returned.

    • clear

      public void clear()

    • put

      public void put(Object key, Object value)
      Add the value to the cache. Remove the

    • remove

      public void remove(Object key)
      Remove from cache.

    • getCache

      public Map getCache()
      Return the cache.