CacheUsageIndirectionPolicy (EclipseLink 4.0.2, API Reference)

java.lang.Object
- org.eclipse.persistence.config.CacheUsageIndirectionPolicy

```
public class CacheUsageIndirectionPolicy
extends Object
```
In-memory querying and conforming indirection policy. The class contains all the valid values for QueryHints.INDIRECTION_POLICY query hint. This can be used on a query with a CACHE_USAGE hint to configure the behavior of in-memory querying and conforming's treatment of uninstantiated indirection/lazy relationships. This is only relevant when the query traverses a join across a lazy relationship. JPA Query Hint Usage:
query.setHint(QueryHints.INDIRECTION_POLICY, CacheUsageIndirectionPolicy.Trigger);
or
@QueryHint(name=QueryHints.INDIRECTION_POLICY, value=CacheUsageIndirectionPolicy.Trigger)
Hint values are case-insensitive. "" could be used instead of default value CacheUsageIndirectionPolicy.Exception.

See Also:

QueryHints.INDIRECTION_POLICY, ObjectLevelReadQuery.setInMemoryQueryIndirectionPolicyState(int)

Author:

James Sutherland

Field Summary

Fields
Modifier and Type	Field	Description
`static String`	`Conform`	If conforming encounters an uninstantiated indirection/lazy object it is assumed to conform.
`static String`	`DEFAULT`	The default type is Exception.
`static String`	`Exception`	If conforming encounters an uninstantiated indirection/lazy object an exception is thrown.
`static String`	`NotConform`	If conforming encounters an uninstantiated indirection/lazy object it is assumed to not conform.
`static String`	`Trigger`	If conforming encounters an uninstantiated indirection/lazy object it is triggered.

Constructor Summary

Constructors
Constructor Description

CacheUsageIndirectionPolicy()

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

- Field Detail
  - Exception
```
public static final String Exception
```
    If conforming encounters an uninstantiated indirection/lazy object an exception is thrown.
    
    See Also:
    
    Constant Field Values
  - Trigger
```
public static final String Trigger
```
    If conforming encounters an uninstantiated indirection/lazy object it is triggered.
    
    See Also:
    
    Constant Field Values
  - Conform
```
public static final String Conform
```
    If conforming encounters an uninstantiated indirection/lazy object it is assumed to conform.
    
    See Also:
    
    Constant Field Values
  - NotConform
```
public static final String NotConform
```
    If conforming encounters an uninstantiated indirection/lazy object it is assumed to not conform.
    
    See Also:
    
    Constant Field Values
  - DEFAULT
```
public static final String DEFAULT
```
    The default type is Exception.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - CacheUsageIndirectionPolicy
```
public CacheUsageIndirectionPolicy()
```