public class QueryLoader extends BasicLoader
A delegate that implements the Loader part of QueryTranslator.
Loader.SqlStatementWrapper
NO_SUFFIX
DEBUG_ENABLED, LOG, SELECT, SELECT_DISTINCT
Constructor and Description |
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QueryLoader(org.hibernate.hql.internal.ast.QueryTranslatorImpl queryTranslator,
SessionFactoryImplementor factory,
org.hibernate.hql.internal.ast.tree.SelectClause selectClause)
Creates a new Loader implementation.
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Modifier and Type | Method and Description |
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protected String |
applyLocks(String sql,
QueryParameters parameters,
Dialect dialect,
List<AfterLoadAction> afterLoadActions)
Append <tt>FOR UPDATE OF</tt> clause, if necessary.
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protected void |
applyPostLoadLocks(Object[] row,
LockMode[] lockModesArray,
SharedSessionContractImplementor session) |
protected int |
bindParameterValues(PreparedStatement statement,
QueryParameters queryParameters,
int startIndex,
SharedSessionContractImplementor session)
We specifically override this method here, because in general we know much more
about the parameters and their appropriate bind positions here then we do in
our super because we track them explicitly here through the ParameterSpecification
interface.
|
org.hibernate.hql.internal.ast.tree.AggregatedSelectExpression |
getAggregatedSelectExpression() |
String[] |
getAliases()
Get the SQL table aliases of entities whose
associations are subselect-loadable, returning
null if this loader does not support subselect
loading
|
protected int[] |
getCollectionOwners()
Get the index of the entity that owns the collection, or -1
if there is no owner in the query results (ie.
|
protected CollectionPersister[] |
getCollectionPersisters()
An (optional) persister for a collection to be initialized; only collection loaders
return a non-null value
|
String[] |
getCollectionSuffixes() |
protected boolean[] |
getEntityEagerPropertyFetches()
An array indicating whether the entities have eager property fetching
enabled.
|
Loadable[] |
getEntityPersisters()
An array of persisters of entity classes contained in each row of results;
implemented by all subclasses
|
protected LockMode[] |
getLockModes(LockOptions lockOptions)
What lock options does this load entities with?
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int[] |
getNamedParameterLocs(String name)
Returns the locations of all occurrences of the named parameter.
|
protected EntityType[] |
getOwnerAssociationTypes()
An array of the owner types corresponding to the
Loader.getOwners()
returns. |
protected int[] |
getOwners()
An array of indexes of the entity that owns a one-to-one association
to the entity at the given index (-1 if there is no "owner")
|
protected String |
getQueryIdentifier()
Identifies the query for statistics reporting, if null,
no statistics will be reported
|
protected Object |
getResultColumnOrRow(Object[] row,
ResultTransformer transformer,
ResultSet rs,
SharedSessionContractImplementor session)
Get the actual object that is returned in the user-visible result list.
|
protected List |
getResultList(List results,
ResultTransformer resultTransformer) |
protected Object[] |
getResultRow(Object[] row,
ResultSet rs,
SharedSessionContractImplementor session) |
protected String[] |
getResultRowAliases()
Returns the aliases that corresponding to a result row.
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String[] |
getSqlAliasSuffixes() |
String |
getSQLString()
The SQL query string to be called.
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String[] |
getSuffixes() |
protected boolean[] |
includeInResultRow() |
protected boolean |
isSubselectLoadingEnabled() |
Iterator |
iterate(QueryParameters queryParameters,
EventSource session) |
List |
list(SharedSessionContractImplementor session,
QueryParameters queryParameters) |
protected boolean |
needsFetchingScroll()
Does the result set to be scrolled contain collection fetches?
|
protected ResultTransformer |
resolveResultTransformer(ResultTransformer resultTransformer)
Determine the actual ResultTransformer that will be used to
transform query results.
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ScrollableResultsImplementor |
scroll(QueryParameters queryParameters,
SharedSessionContractImplementor session) |
protected boolean |
upgradeLocks()
Does this query return objects that might be already cached
by the session, whose lock mode may need upgrading
|
void |
validateScrollability() |
generateSuffixes, generateSuffixes, getCollectionAliases, getEntityAliases, postInstantiate
areResultSetRowsTransformedImmediately, autoDiscoverTypes, bindNamedParameters, bindPositionalParameters, checkScrollability, determineFollowOnLockMode, doList, doQueryAndInitializeNonLazyCollections, doQueryAndInitializeNonLazyCollections, executeQueryStatement, executeQueryStatement, extractKeysFromResultSet, getCompositeKeyManyToOneTargetIndices, getFactory, getLimitHandler, getResultSet, getResultSet, hasSubselectLoadableCollections, isSingleRowLoader, list, loadCollection, loadCollectionBatch, loadCollectionSubselect, loadEntity, loadEntity, loadEntityBatch, loadSequentialRowsForward, loadSequentialRowsReverse, loadSingleRow, prepareQueryStatement, preprocessSQL, processDistinctKeyword, processResultSet, putResultInQueryCache, scroll, shouldUseFollowOnLocking, toString
public QueryLoader(org.hibernate.hql.internal.ast.QueryTranslatorImpl queryTranslator, SessionFactoryImplementor factory, org.hibernate.hql.internal.ast.tree.SelectClause selectClause)
Creates a new Loader implementation.
queryTranslator
- The query translator that is the delegator.factory
- The factory from which this loader is being created.selectClause
- The AST representing the select clause for loading.public org.hibernate.hql.internal.ast.tree.AggregatedSelectExpression getAggregatedSelectExpression()
public final void validateScrollability() throws HibernateException
HibernateException
protected boolean needsFetchingScroll()
Loader
Does the result set to be scrolled contain collection fetches?
needsFetchingScroll
in class Loader
public Loadable[] getEntityPersisters()
Loader
An array of persisters of entity classes contained in each row of results; implemented by all subclasses
getEntityPersisters
in class Loader
public String[] getAliases()
Loader
Get the SQL table aliases of entities whose associations are subselect-loadable, returning null if this loader does not support subselect loading
getAliases
in class Loader
public String[] getSqlAliasSuffixes()
public String[] getSuffixes()
getSuffixes
in class BasicLoader
public String[] getCollectionSuffixes()
getCollectionSuffixes
in class BasicLoader
protected String getQueryIdentifier()
Loader
Identifies the query for statistics reporting, if null, no statistics will be reported
getQueryIdentifier
in class Loader
public String getSQLString()
The SQL query string to be called.
getSQLString
in class Loader
ResultSet
.protected CollectionPersister[] getCollectionPersisters()
An (optional) persister for a collection to be initialized; only collection loaders return a non-null value
getCollectionPersisters
in class Loader
protected int[] getCollectionOwners()
Loader
Get the index of the entity that owns the collection, or -1 if there is no owner in the query results (ie. in the case of a collection initializer) or no collection.
getCollectionOwners
in class Loader
protected boolean[] getEntityEagerPropertyFetches()
Loader
An array indicating whether the entities have eager property fetching enabled.
getEntityEagerPropertyFetches
in class Loader
protected int[] getOwners()
An array of indexes of the entity that owns a one-to-one association to the entity at the given index (-1 if there is no "owner")
protected EntityType[] getOwnerAssociationTypes()
Loader
An array of the owner types corresponding to the Loader.getOwners()
returns. Indices indicating no owner would be null here.
getOwnerAssociationTypes
in class Loader
protected boolean isSubselectLoadingEnabled()
isSubselectLoadingEnabled
in class Loader
protected LockMode[] getLockModes(LockOptions lockOptions)
Loader
What lock options does this load entities with?
getLockModes
in class Loader
lockOptions
- a collection of lock modes specified dynamically via the Query interfaceprotected String applyLocks(String sql, QueryParameters parameters, Dialect dialect, List<AfterLoadAction> afterLoadActions) throws QueryException
Loader
Append <tt>FOR UPDATE OF</tt> clause, if necessary. This empty superclass implementation merely returns its first argument.
applyLocks
in class Loader
QueryException
protected void applyPostLoadLocks(Object[] row, LockMode[] lockModesArray, SharedSessionContractImplementor session)
applyPostLoadLocks
in class Loader
protected boolean upgradeLocks()
Loader
Does this query return objects that might be already cached by the session, whose lock mode may need upgrading
upgradeLocks
in class Loader
protected String[] getResultRowAliases()
Loader
Returns the aliases that corresponding to a result row.
getResultRowAliases
in class Loader
protected ResultTransformer resolveResultTransformer(ResultTransformer resultTransformer)
Loader
Determine the actual ResultTransformer that will be used to transform query results.
resolveResultTransformer
in class Loader
resultTransformer
- the specified result transformerprotected boolean[] includeInResultRow()
includeInResultRow
in class Loader
protected Object getResultColumnOrRow(Object[] row, ResultTransformer transformer, ResultSet rs, SharedSessionContractImplementor session) throws SQLException, HibernateException
Loader
Get the actual object that is returned in the user-visible result list. This empty implementation merely returns its first argument. This is overridden by some subclasses.
getResultColumnOrRow
in class Loader
SQLException
HibernateException
protected Object[] getResultRow(Object[] row, ResultSet rs, SharedSessionContractImplementor session) throws SQLException, HibernateException
getResultRow
in class Loader
SQLException
HibernateException
protected List getResultList(List results, ResultTransformer resultTransformer) throws QueryException
getResultList
in class Loader
QueryException
public List list(SharedSessionContractImplementor session, QueryParameters queryParameters) throws HibernateException
HibernateException
public Iterator iterate(QueryParameters queryParameters, EventSource session) throws HibernateException
HibernateException
public ScrollableResultsImplementor scroll(QueryParameters queryParameters, SharedSessionContractImplementor session) throws HibernateException
HibernateException
public int[] getNamedParameterLocs(String name) throws QueryException
Returns the locations of all occurrences of the named parameter.
getNamedParameterLocs
in class Loader
QueryException
protected int bindParameterValues(PreparedStatement statement, QueryParameters queryParameters, int startIndex, SharedSessionContractImplementor session) throws SQLException
We specifically override this method here, because in general we know much more about the parameters and their appropriate bind positions here then we do in our super because we track them explicitly here through the ParameterSpecification interface.
bindParameterValues
in class Loader
queryParameters
- The encapsulation of the parameter values to be bound.startIndex
- The position from which to start binding parameter values.session
- The originating session.statement
- The JDBC prepared statementSQLException
- Indicates problems performing the binding.Copyright © 2001-2018 Red Hat, Inc. All Rights Reserved.