org.apache.openjpa.slice.jdbc

Class DistributedStoreQuery

java.lang.Object

org.apache.openjpa.kernel.AbstractStoreQuery

org.apache.openjpa.kernel.ExpressionStoreQuery

org.apache.openjpa.jdbc.kernel.JDBCStoreQuery

org.apache.openjpa.slice.jdbc.DistributedStoreQuery

All Implemented Interfaces:

Serializable, QueryOperations, StoreQuery

 class DistributedStoreQuery
extends JDBCStoreQuery

A query for distributed databases.

Author:

Pinaki Poddar

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
(package private) static class	DistributedStoreQuery.DeleteExecutor
static class	DistributedStoreQuery.ParallelExecutor Executes queries on multiple databases.
(package private) static class	DistributedStoreQuery.QueryExecutor
(package private) static class	DistributedStoreQuery.UpdateExecutor

Nested classes/interfaces inherited from class org.apache.openjpa.kernel.ExpressionStoreQuery

ExpressionStoreQuery.AbstractExpressionExecutor, ExpressionStoreQuery.DataStoreExecutor, ExpressionStoreQuery.InMemoryExecutor

Nested classes/interfaces inherited from class org.apache.openjpa.kernel.AbstractStoreQuery

AbstractStoreQuery.AbstractExecutor

Nested classes/interfaces inherited from interface org.apache.openjpa.kernel.StoreQuery

StoreQuery.Executor, StoreQuery.Range

Field Summary

Fields inherited from class org.apache.openjpa.kernel.ExpressionStoreQuery

_parsed

Fields inherited from class org.apache.openjpa.kernel.AbstractStoreQuery

ctx

Fields inherited from interface org.apache.openjpa.kernel.StoreQuery

EMPTY_BOOLEANS, EMPTY_CLASSES, EMPTY_METAS, EMPTY_OBJECTS, EMPTY_ORDERED_PARAMS, EMPTY_PARAMS, EMPTY_STRINGS

Fields inherited from interface org.apache.openjpa.kernel.QueryOperations

OP_DELETE, OP_SELECT, OP_UPDATE

Constructor Summary

Constructors

Constructor and Description
DistributedStoreQuery(JDBCStore store, ExpressionParser parser)

Method Summary

Methods

Modifier and Type	Method and Description
(package private) void	add(StoreQuery q)
DistributedJDBCStoreManager	getDistributedStore()
StoreQuery.Executor	newDataStoreExecutor(ClassMetaData meta, boolean subs) Return an executor for datastore execution of this query.
void	setContext(QueryContext ctx) Set the current query context.

Methods inherited from class org.apache.openjpa.jdbc.kernel.JDBCStoreQuery

evaluate, executeDelete, executeQuery, executeUpdate, executeUpdate, executeUpdate, getDataStoreActions, getExpressionFactory, getFilterListener, getIndependentExpressionCandidates, getStore, getThreadLocalContext, getThreadLocalContext, getThreadLocalContext, getThreadLocalSelect, newCompilationKey, prepareStatement, supportsDataStoreExecution

Methods inherited from class org.apache.openjpa.kernel.ExpressionStoreQuery

getCompilation, getResolver, invalidateCompilation, newCompilation, newInMemoryExecutor, populateFromCompilation, setQuery, supportsInMemoryExecution

Methods inherited from class org.apache.openjpa.kernel.AbstractStoreQuery

getAggregateListener, getContext, requiresCandidateType, requiresParameterDeclarations, supportsAbstractExecutors, supportsParameterDeclarations

Methods inherited from class java.lang.Object

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

Constructor Detail

DistributedStoreQuery

public DistributedStoreQuery(JDBCStore store,
                     ExpressionParser parser)

Method Detail

add

void add(StoreQuery q)

getDistributedStore

public DistributedJDBCStoreManager getDistributedStore()

newDataStoreExecutor

public StoreQuery.Executor newDataStoreExecutor(ClassMetaData meta,
                                       boolean subs)

Description copied from interface: StoreQuery

Return an executor for datastore execution of this query. Executors must be cachable and thread safe. If this class returns true from StoreQuery.supportsAbstractExecutors(), the given metadata will always be for the candidate class of this query, or possibly null if the candidate class is not itself persistence capable (like an interface or abstract base class). Otherwise, the given type will be a mapped class.

Specified by:

newDataStoreExecutor in interface StoreQuery

Overrides:

newDataStoreExecutor in class ExpressionStoreQuery

subs - whether to include dependent mapped subclasses in the results; independent subclasses should never be included

setContext

public void setContext(QueryContext ctx)

Description copied from interface: StoreQuery

Set the current query context. This will be called before use.

Specified by:

setContext in interface StoreQuery

Overrides:

setContext in class AbstractStoreQuery