org.hibernate.search.mapper.orm.search.loading

Enum EntityLoadingCacheLookupStrategy

java.lang.Object

java.lang.Enum<EntityLoadingCacheLookupStrategy>

org.hibernate.search.mapper.orm.search.loading.EntityLoadingCacheLookupStrategy

All Implemented Interfaces:

Serializable, Comparable<EntityLoadingCacheLookupStrategy>

public enum EntityLoadingCacheLookupStrategy
extends Enum<EntityLoadingCacheLookupStrategy>

Strategy for cache lookup before search query results are loaded.

In most cases, no presence check is necessary.

Author:

Emmanuel Bernard

Enum Constant Summary

Enum Constants

Enum Constant and Description
PERSISTENCE_CONTEXT When a search query returns entities, first check the persistence context to retrieve entities that are already in the session, then load the entities that were not found in the session through an SQL query.
PERSISTENCE_CONTEXT_THEN_SECOND_LEVEL_CACHE When a search query returns entities, first check the persistence context to retrieve entities that are already in the session, then check the second level cache to retrieve entities that are in the 2LC but not in the session, then load the entities that were not found in the session or 2LC through an SQL query.
SKIP When a search query returns entities, do not check any cache and load all the entities through an SQL query.

Method Summary

Modifier and Type	Method and Description
static EntityLoadingCacheLookupStrategy	of(String value)
static EntityLoadingCacheLookupStrategy	valueOf(String name) Returns the enum constant of this type with the specified name.
static EntityLoadingCacheLookupStrategy[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

SKIP

public static final EntityLoadingCacheLookupStrategy SKIP

When a search query returns entities, do not check any cache and load all the entities through an SQL query.

This is the default strategy.

PERSISTENCE_CONTEXT

public static final EntityLoadingCacheLookupStrategy PERSISTENCE_CONTEXT

When a search query returns entities, first check the persistence context to retrieve entities that are already in the session, then load the entities that were not found in the session through an SQL query.

PERSISTENCE_CONTEXT_THEN_SECOND_LEVEL_CACHE

public static final EntityLoadingCacheLookupStrategy PERSISTENCE_CONTEXT_THEN_SECOND_LEVEL_CACHE

When a search query returns entities, first check the persistence context to retrieve entities that are already in the session, then check the second level cache to retrieve entities that are in the 2LC but not in the session, then load the entities that were not found in the session or 2LC through an SQL query.

Method Detail

values

public static EntityLoadingCacheLookupStrategy[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (EntityLoadingCacheLookupStrategy c : EntityLoadingCacheLookupStrategy.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static EntityLoadingCacheLookupStrategy valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

of

public static EntityLoadingCacheLookupStrategy of(String value)