CacheUsageIndirectionPolicy (EclipseLink 2.6.4, API Reference)

EclipseLink 2.6.4, API Reference

All Classes

Summary:
Nested |
Field |
Constr |
Method

Detail:
Field |
Constr |
Method

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

```
public class CacheUsageIndirectionPolicy
extends java.lang.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 and Description
`static java.lang.String`	`Conform` If conforming encounters an uninstantiated indirection/lazy object it is assumed to conform.
`static java.lang.String`	`DEFAULT` The default type is Exception.
`static java.lang.String`	`Exception` If conforming encounters an uninstantiated indirection/lazy object an exception is thrown.
`static java.lang.String`	`NotConform` If conforming encounters an uninstantiated indirection/lazy object it is assumed to not conform.
`static java.lang.String`	`Trigger` If conforming encounters an uninstantiated indirection/lazy object it is triggered.

Constructor Summary

Constructors
Constructor and 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 java.lang.String Exception
```
    If conforming encounters an uninstantiated indirection/lazy object an exception is thrown.
    
    See Also:
    Constant Field Values
  - Trigger
```
public static final java.lang.String Trigger
```
    If conforming encounters an uninstantiated indirection/lazy object it is triggered.
    
    See Also:
    Constant Field Values
  - Conform
```
public static final java.lang.String Conform
```
    If conforming encounters an uninstantiated indirection/lazy object it is assumed to conform.
    
    See Also:
    Constant Field Values
  - NotConform
```
public static final java.lang.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 java.lang.String DEFAULT
```
    The default type is Exception.
    
    See Also:
    Constant Field Values
- Constructor Detail
  - CacheUsageIndirectionPolicy
```
public CacheUsageIndirectionPolicy()
```

EclipseLink 2.6.4, API Reference

All Classes

Summary:
Nested |
Field |
Constr |
Method

Detail:
Field |
Constr |
Method