IdentityMapKeyEnumeration

java.lang.Object
- org.eclipse.persistence.internal.identitymaps.AbstractIdentityMapEnumeration<CacheKey>
- - org.eclipse.persistence.internal.identitymaps.IdentityMapKeyEnumeration

All Implemented Interfaces:

java.util.Enumeration<CacheKey>
```
public class IdentityMapKeyEnumeration
extends AbstractIdentityMapEnumeration<CacheKey>
```
Allows to iterate over CacheKey instances stored in the IdentityMap.

Field Summary
- Fields inherited from class org.eclipse.persistence.internal.identitymaps.AbstractIdentityMapEnumeration
  cacheKeysIterator, nextKey, shouldCheckReadLocks

Constructor Summary

Constructors
Constructor	Description
`IdentityMapKeyEnumeration(java.util.Collection<CacheKey> keys)`	Creates an instance of `CacheKey` instances enumeration.
`IdentityMapKeyEnumeration(java.util.Collection<CacheKey> keys, boolean shouldCheckReadLocks)`	Creates an instance of `CacheKey` instances enumeration.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`CacheKey`	`nextElement()`	Get next element of `CacheKey` enumeration if this enumeration object has at least one more element to provide.

Methods inherited from class org.eclipse.persistence.internal.identitymaps.AbstractIdentityMapEnumeration
getNextElement, hasMoreElements

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Enumeration
asIterator

- Constructor Detail
  - IdentityMapKeyEnumeration
```
public IdentityMapKeyEnumeration(java.util.Collection<CacheKey> keys)
```
    Creates an instance of CacheKey instances enumeration. Checking of read lock on the CacheKey instances is turned on.
    
    Parameters:
    
    keys - Collection of CacheKey instances to be iterated
  - IdentityMapKeyEnumeration
```
public IdentityMapKeyEnumeration(java.util.Collection<CacheKey> keys,
                                 boolean shouldCheckReadLocks)
```
    Creates an instance of CacheKey instances enumeration.
    
    Parameters:
    
    keys - Collection of CacheKey instances to be iterated
    
    shouldCheckReadLocks - value of true if read lock on the CacheKey instances should be checked or false otherwise
- Method Detail
  - nextElement
```
public CacheKey nextElement()
```
    Get next element of CacheKey enumeration if this enumeration object has at least one more element to provide.
    
    Specified by:
    
    nextElement in interface java.util.Enumeration<CacheKey>
    
    Specified by:
    
    nextElement in class AbstractIdentityMapEnumeration<CacheKey>
    
    Returns:
    
    the next element of this enumeration
    
    Throws:
    
    java.util.NoSuchElementException - if no more elements exist