Ehcache Settings for Collections

Hibernate creates collection cache names based on the fully qualified name of the Domain Object followed by "." and the collection field name. For example, a Country domain object has a set of advancedSearchFacilities. The Hibernate doclet for the accessor looks like this:

/**
* Returns the advanced search facilities that should appear for this country.
* @hibernate.set cascade="all" inverse="true"
* @hibernate.collection-key column="COUNTRY_ID"
* @hibernate.collection-one-to-many class="com.wotif.jaguar.domain.AdvancedSearchFacility"
* @hibernate.cache usage="read-write"
*/
public Set getAdvancedSearchFacilities() {
return advancedSearchFacilities;
}

You need an additional cache configured for the set. The ehcache.xml configuration looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<ehcache>
<cache name="com.somecompany.someproject.domain.Country"
maxEntriesLocalHeap="50"
eternal="false"
timeToLiveSeconds="600"
<persistence strategy="localTempSwap"/>
/>
<cache
name="com.somecompany.someproject.domain.Country.advancedSearchFacilities"
maxEntriesLocalHeap="450"
eternal="false"
timeToLiveSeconds="600"
<persistence strategy="localTempSwap"/>
/>
</ehcache>

Hibernate CacheConcurrencyStrategy for Collections

The read-write, nonstrict-read-write and read-only policies apply to Domain Object collections.