org.hibernate.engine.query
Class QueryPlanCache

java.lang.Object
  org.hibernate.engine.query.QueryPlanCache

All Implemented Interfaces:

Serializable

public class QueryPlanCache
extends Object
implements Serializable

Acts as a cache for compiled query plans, as well as query-parameter metadata.

Author:

Steve Ebersole

See Also:

Environment.QUERY_PLAN_CACHE_MAX_STRONG_REFERENCES, Environment.QUERY_PLAN_CACHE_MAX_SOFT_REFERENCES, Serialized Form

Constructor Summary

QueryPlanCache(SessionFactoryImplementor factory)

Method Summary

FilterQueryPlan	getFilterQueryPlan(String filterString, String collectionRole, boolean shallow, Map enabledFilters)
HQLQueryPlan	getHQLQueryPlan(String queryString, boolean shallow, Map enabledFilters)
NativeSQLQueryPlan	getNativeSQLQueryPlan(NativeSQLQuerySpecification spec)
ParameterMetadata	getSQLParameterMetadata(String query) Obtain the parameter metadata for given native-sql query.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryPlanCache

public QueryPlanCache(SessionFactoryImplementor factory)

Method Detail

getSQLParameterMetadata

public ParameterMetadata getSQLParameterMetadata(String query)

Obtain the parameter metadata for given native-sql query.

for native-sql queries, the param metadata is determined outside any relation to a query plan, because query plan creation and/or retrieval for a native-sql query depends on all of the return types having been set, which might not be the case up-front when param metadata would be most useful

Parameters:

query - The query

Returns:

The parameter metadata

getHQLQueryPlan

public HQLQueryPlan getHQLQueryPlan(String queryString,
                                    boolean shallow,
                                    Map enabledFilters)
                             throws QueryException,
                                    MappingException

Throws:

QueryException

MappingException

getFilterQueryPlan

public FilterQueryPlan getFilterQueryPlan(String filterString,
                                          String collectionRole,
                                          boolean shallow,
                                          Map enabledFilters)
                                   throws QueryException,
                                          MappingException

Throws:

QueryException

MappingException

getNativeSQLQueryPlan

public NativeSQLQueryPlan getNativeSQLQueryPlan(NativeSQLQuerySpecification spec)