QueryCacheStoreQuery (OpenJPA 1.0.4 API)

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org.apache.openjpa.datacache
Class QueryCacheStoreQuery

java.lang.Object
  org.apache.openjpa.datacache.QueryCacheStoreQuery

All Implemented Interfaces:: Serializable, QueryOperations, StoreQuery

public class QueryCacheStoreQuery
extends Object
implements StoreQuery
extends Object
implements StoreQuery

A StoreQuery implementation that caches the OIDs involved in the query, and can determine whether or not the query has been dirtied.

Since:: 0.2.5.0
Author:: Patrick Linskey
See Also:: Serialized Form

Nested Class Summary
`static class`	`QueryCacheStoreQuery.CachedList` Result list implementation for a cached query result.

Nested classes/interfaces inherited from interface org.apache.openjpa.kernel.StoreQuery
`StoreQuery.Executor, StoreQuery.Range`

Field Summary

Fields inherited from interface org.apache.openjpa.kernel.StoreQuery
`EMPTY_BOOLEANS, EMPTY_CLASSES, EMPTY_METAS, EMPTY_OBJECTS, EMPTY_PARAMS, EMPTY_STRINGS`

Fields inherited from interface org.apache.openjpa.kernel.QueryOperations
`OP_DELETE, OP_SELECT, OP_UPDATE`

Constructor Summary
`QueryCacheStoreQuery(StoreQuery query, QueryCache cache)` Create a new instance that delegates to `query` if no cached results are available.

Method Summary
`AggregateListener`	`getAggregateListener(String tag)` Return the standard filter listener for the given tag, or null.
`QueryCache`	`getCache()` Return the `QueryCache` that this object is associated with.
`QueryContext`	`getContext()` Return the query context that has been set.
`StoreQuery`	`getDelegate()` Delegate.
`FilterListener`	`getFilterListener(String tag)` Return the standard filter listener for the given tag, or null.
`void`	`invalidateCompilation()` Invalidate any internal compilation state.
`Object`	`newCompilation()` Create a new compilation for this query.
`Object`	`newCompilationKey()` Create a new key for caching compiled query information.
`StoreQuery.Executor`	`newDataStoreExecutor(ClassMetaData meta, boolean subs)` Return an executor for datastore execution of this query.
`StoreQuery.Executor`	`newInMemoryExecutor(ClassMetaData meta, boolean subs)` Return an executor for in-memory execution of this query.
`void`	`populateFromCompilation(Object comp)` Populate internal data from compilation.
`boolean`	`requiresCandidateType()` Whether this query requires a candidate class.
`boolean`	`requiresParameterDeclarations()` Whether this query requires parameters to be declared.
`void`	`setContext(QueryContext qctx)` Set the current query context.
`boolean`	`setQuery(Object query)` This is invoked when the user or a facade creates a new query with an object that the system does not recognize.
`boolean`	`supportsAbstractExecutors()` Return true if this query supports execution against abstract or interface types.
`boolean`	`supportsDataStoreExecution()` True if this query supports datastore execution, false if it can only run in memory.
`boolean`	`supportsInMemoryExecution()` True if this query supports in-memory execution, false if it can only run against the datastore.
`boolean`	`supportsParameterDeclarations()` Whether this query supports declared parameters.
`Object`	`writeReplace()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

QueryCacheStoreQuery

public QueryCacheStoreQuery(StoreQuery query,
                            QueryCache cache)

Create a new instance that delegates to query if no cached results are available.

Method Detail

getCache

public QueryCache getCache()

Return the QueryCache that this object is associated with.

getDelegate

public StoreQuery getDelegate()

Delegate.

writeReplace

public Object writeReplace()
                    throws ObjectStreamException

Throws:: ObjectStreamException