org.broadleafcommerce.common.i18n.service

Class SparseTranslationOverrideStrategy

java.lang.Object

org.broadleafcommerce.common.i18n.service.SparseTranslationOverrideStrategy

All Implemented Interfaces:

OverridePreCacheInitializer, TranslationOverrideStrategy, org.springframework.core.Ordered

@Component(value="blSparseTranslationOverrideStrategy")
public class SparseTranslationOverrideStrategy
extends Object
implements TranslationOverrideStrategy, OverridePreCacheInitializer

A retrieval and caching strategy for translations. Primarily supports multitenant scenarios with the following characteristics:

• A very large template translation catalog
• A small number of standard site overrides
• Small or large quantity of individual standard sites

Since the large catalog can be costly for the threshold count bounding inherent to ThresholdCacheTranslationOverrideStrategy, this strategy opts for completely caching overrides and minimizing template queries. The highest template query optimization is achieved in conjunction with the 'precached.sparse.override.template.search.restrict.catalog' property set to true (false by default). See com.broadleafcommerce.tenant.service.extension.MultiTenantTemplateOnlyQueryExtensionHandler for more information, since this setting assumes the translated entity is in the same catalog as the Translation instance, which may not be true for all installations.

Hybrid configurations are also possible for small to medium size template translation catalogs where the threshold count bounding queries are not a concern and complete (or partial) caching of the template catalog can be achieved. However, such a strategy may provide little to no benefit over the out-of-the-box ThresholdCacheTranslationOverrideStrategy. See the templateEnabled property for more information.

This strategy also works best when there are few standard sites with isolated values (i.e. the value was created in the standard site and was not inherited from a profile or catalog). This is because the strategy can utilize an optimized template query that is portable across sites if it doesn't have to take into account the standard site. The strategy uses OverridePreCacheService.isActiveIsolatedSiteForType(Long, String) to figure out this state.

This strategy is disabled by default. Please see the javadoc for com.broadleafcommerce.tenant.service.cache.SparseOverridePreCacheServiceImpl (MultiTenant only) for more information on how to enable this strategy via configuration of that service.

Author:

Jeff Fischer

See Also:

ThresholdCacheTranslationOverrideStrategy

Field Summary

Fields

Modifier and Type	Field and Description
protected TranslationDao	dao
protected javax.persistence.EntityManager	em
protected TemplateOnlyQueryExtensionManager	extensionManager
static int	PRECACHED_SPARSE_OVERRIDE_ORDER
protected OverridePreCacheService	preCachedSparseOverrideService
protected boolean	restrictAssociation Whether or not to restrict the template search to the catalog/site of an associated item.
protected boolean	templateEnabled Whether or not getLocaleBasedTemplateValue(String, String, TranslatedEntity, String, String, String, String, String) will be utilized from this strategy.

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
SparseTranslationOverrideStrategy()

Method Summary

Modifier and Type	Method and Description
protected String	getCacheKey(TranslatedEntity type, String entityId, String fieldName, String localeCode)
protected String	getCacheKey(Translation translation)
LocalePair	getLocaleBasedOverride(String property, TranslatedEntity entityType, String entityId, String localeCode, String localeCountryCode, String basicCacheKey) Retrieve the standard site override translation, if applicable
LocalePair	getLocaleBasedTemplateValue(String templateCacheKey, String property, TranslatedEntity entityType, String entityId, String localeCode, String localeCountryCode, String specificPropertyKey, String generalPropertyKey) Retrieve the template level translation, if applicable
int	getOrder()
protected List<Translation>	getTemplateTranslations(TranslatedEntity entityType, String entityId, String property, String localeCode)
StandardCacheItem	initializeOverride(Object entity) Perform any initialization tasks (e.g.
boolean	isOverrideQualified(Class<?> type) Whether or not this initializer is qualified to work on the given entity type
boolean	isRestrictAssociation()
boolean	isTemplateEnabled()
void	setRestrictAssociation(boolean restrictAssociation)
void	setTemplateEnabled(boolean templateEnabled)
boolean	validateTemplateProcessing(String standardCacheKey, String templateCacheKey) Whether or not a template version should be searched for.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

PRECACHED_SPARSE_OVERRIDE_ORDER

public static final int PRECACHED_SPARSE_OVERRIDE_ORDER

See Also:

Constant Field Values

preCachedSparseOverrideService

protected OverridePreCacheService preCachedSparseOverrideService

extensionManager

protected TemplateOnlyQueryExtensionManager extensionManager

em

protected javax.persistence.EntityManager em

dao

protected TranslationDao dao

templateEnabled

@Value(value="${precached.sparse.override.translation.template.enabled:true}")
protected boolean templateEnabled

Whether or not getLocaleBasedTemplateValue(String, String, TranslatedEntity, String, String, String, String, String) will be utilized from this strategy. If false, the fallback ThresholdCacheTranslationOverrideStrategy.getLocaleBasedTemplateValue(String, String, TranslatedEntity, String, String, String, String, String) will be used instead.

If the 'template' repository (MT concept) is large, this value should be left true. However, if the 'template' repository is relatively small, you may want to consider setting this to false in order to leverage the possibility of complete caching in the default strategy. See TranslationSupport.getThresholdForFullCache() for more info on this option.

The default value is true. Set the 'precached.sparse.override.translation.template.enabled' property to change the value.

This value is meaningless if the current standard site is found to contain active isolated values for translations. Review the documentation in com.broadleafcommerce.tenant.service.cache.SparseOverridePreCacheServiceImpl for more information.

restrictAssociation

@Value(value="${precached.sparse.override.translation.template.search.restrict.association:false}")
protected boolean restrictAssociation

Whether or not to restrict the template search to the catalog/site of an associated item. For example, restrict the translation of name for a Sku to the catalog of the Sku. Or, restrict the translation of StructuredContent property to the site discriminator of the StructuredContent.

This value is false by default. Change the 'precached.sparse.override.translation.template.search.restrict.association' to true to enable.

Constructor Detail

SparseTranslationOverrideStrategy

public SparseTranslationOverrideStrategy()

Method Detail

getLocaleBasedOverride

public LocalePair getLocaleBasedOverride(String property,
                                         TranslatedEntity entityType,
                                         String entityId,
                                         String localeCode,
                                         String localeCountryCode,
                                         String basicCacheKey)

Description copied from interface: TranslationOverrideStrategy

Retrieve the standard site override translation, if applicable

Specified by:

getLocaleBasedOverride in interface TranslationOverrideStrategy

Returns:

getLocaleBasedTemplateValue

public LocalePair getLocaleBasedTemplateValue(String templateCacheKey,
                                              String property,
                                              TranslatedEntity entityType,
                                              String entityId,
                                              String localeCode,
                                              String localeCountryCode,
                                              String specificPropertyKey,
                                              String generalPropertyKey)

Description copied from interface: TranslationOverrideStrategy

Retrieve the template level translation, if applicable

Specified by:

getLocaleBasedTemplateValue in interface TranslationOverrideStrategy

Returns:

isOverrideQualified

public boolean isOverrideQualified(Class<?> type)

Description copied from interface: OverridePreCacheInitializer

Whether or not this initializer is qualified to work on the given entity type

Specified by:

isOverrideQualified in interface OverridePreCacheInitializer

Returns:

initializeOverride

public StandardCacheItem initializeOverride(Object entity)

Description copied from interface: OverridePreCacheInitializer

Perform any initialization tasks (e.g. exercising a lazy collection) and returns a StandardCacheItem instance.

Specified by:

initializeOverride in interface OverridePreCacheInitializer

Returns:

validateTemplateProcessing

public boolean validateTemplateProcessing(String standardCacheKey,
                                          String templateCacheKey)

Description copied from interface: TranslationOverrideStrategy

Whether or not a template version should be searched for. If false, then the system will return null for the translation, should an override not be found.

Specified by:

validateTemplateProcessing in interface TranslationOverrideStrategy

Returns:

getOrder

public int getOrder()

Specified by:

getOrder in interface org.springframework.core.Ordered

isTemplateEnabled

public boolean isTemplateEnabled()

setTemplateEnabled

public void setTemplateEnabled(boolean templateEnabled)

isRestrictAssociation

public boolean isRestrictAssociation()

setRestrictAssociation

public void setRestrictAssociation(boolean restrictAssociation)

getTemplateTranslations

protected List<Translation> getTemplateTranslations(TranslatedEntity entityType,
                                                    String entityId,
                                                    String property,
                                                    String localeCode)

getCacheKey

protected String getCacheKey(Translation translation)

getCacheKey

protected String getCacheKey(TranslatedEntity type,
                             String entityId,
                             String fieldName,
                             String localeCode)