| Interface | Description | 
|---|---|
| PersistenceUtilHelper.AttributeAccess | 
| Class | Description | 
|---|---|
| CacheModeHelper | |
| ConfigurationHelper | |
| LockModeTypeHelper | 
 Helper to deal with  
LockModeType <-> LockMode conversions. | 
| LogHelper | |
| PersistenceUnitTransactionTypeHelper | |
| PersistenceUtilHelper | |
| PersistenceUtilHelper.ClassMetadataCache | |
| PersistenceUtilHelper.FieldAttributeAccess | |
| PersistenceUtilHelper.MetadataCache | 
 Cache hierarchy and member resolution in a weak hash map 
 | 
| PersistenceUtilHelper.MethodAttributeAccess | |
| PessimisticNumberParser | 
 An old-style query might pass positional numbers of Query parameters as strings. 
 | 
| XmlHelper | 
 A utility class to cover up the rough bits of xml parsing 
 | 
| Exception | Description | 
|---|---|
| PersistenceUtilHelper.AttributeExtractionException | 
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