cache-usage.indirection-policy

Use eclipselink.cache-usage.indirection-policy (with cache-usage) to configure in-memory querying and conforming's treatment of uninstantiated indirection/lazy relationships.

Values

Table 4-4 describes this query hint's values.

Table 4-4 Valid Values for cache-usage.indirection-policy

Value	Description
`Conform`	If conforming encounters an uninstantiated indirection/lazy object, it is assumed to conform.
`Exception`	(Default) If conforming encounters an uninstantiated indirection/lazy object an exception is thrown.
`NotConform`	If conforming encounters an uninstantiated indirection/lazy object it is assumed to not conform.
`Trigger`	If conforming encounters an uninstantiated indirection/lazy object it is triggered.

Usage

This hint applies only when the query traverses a join across a lazy relationship.

Examples

Example 4-9 Using cache-usage.indirection-policy in a JPA Query

query.setHint(QueryHints.INDIRECTION_POLICY, CacheUsageIndirectionPolicy.Trigger);

Example 4-10 Using cache-usage.indirection-policy in a @QueryHint Annotation

@QueryHint(name=QueryHints.INDIRECTION_POLICY, value=CacheUsageIndirectionPolicy.Trigger)