Package org.eclipse.persistence.config
Class CacheUsageIndirectionPolicy
- java.lang.Object
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- org.eclipse.persistence.config.CacheUsageIndirectionPolicy
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public class CacheUsageIndirectionPolicy extends java.lang.ObjectIn-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
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Field Summary
Fields Modifier and Type Field Description static java.lang.StringConformIf conforming encounters an uninstantiated indirection/lazy object it is assumed to conform.static java.lang.StringDEFAULTThe default type is Exception.static java.lang.StringExceptionIf conforming encounters an uninstantiated indirection/lazy object an exception is thrown.static java.lang.StringNotConformIf conforming encounters an uninstantiated indirection/lazy object it is assumed to not conform.static java.lang.StringTriggerIf conforming encounters an uninstantiated indirection/lazy object it is triggered.
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Constructor Summary
Constructors Constructor Description CacheUsageIndirectionPolicy()
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Field Detail
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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
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Trigger
public static final java.lang.String Trigger
If conforming encounters an uninstantiated indirection/lazy object it is triggered.- See Also:
- Constant Field Values
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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
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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
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DEFAULT
public static final java.lang.String DEFAULT
The default type is Exception.- See Also:
- Constant Field Values
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