Class QueryCacheEntry

java.lang.Object

io.ebean.cache.QueryCacheEntry

public final class QueryCacheEntry
extends Object

For query cache entries we additionally hold the dependent tables and timestamp for the query result.

We use the dependent tables and timestamp to validate that tables the query joins to have not been modified since the query cache entry was cached. If any dependent tables have since been modified the query cache entry is treated as invalid.

Constructor Summary

Constructors

Constructor	Description
QueryCacheEntry(Object value, Set<String> dependentTables, Instant timestamp)	Create with dependent tables and timestamp.

Method Summary

Modifier and Type	Method	Description
Set<String>	dependentTables()	Return the tables the query result is dependent on.
Instant	timestamp()	Return the timestamp used to check for modifications on the dependent tables.
Object	value()	Return the actual query result.

Methods inherited from class Object

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

Constructor Details

QueryCacheEntry

public QueryCacheEntry(Object value,
 Set<String> dependentTables,
 Instant timestamp)

Create with dependent tables and timestamp.

Parameters:

value - The query result being cached

dependentTables - The extra tables the query is dependent on (joins to)

timestamp - The timestamp that the query uses to check for modifications

Method Details

value

public Object value()

Return the actual query result.

dependentTables

public Set<String> dependentTables()

Return the tables the query result is dependent on.

timestamp

public Instant timestamp()

Return the timestamp used to check for modifications on the dependent tables.