org.apache.openjpa.slice.jdbc
Class DistributedStoreQuery

java.lang.Object
  extended by org.apache.openjpa.kernel.AbstractStoreQuery
      extended by org.apache.openjpa.kernel.ExpressionStoreQuery
          extended by org.apache.openjpa.jdbc.kernel.JDBCStoreQuery
              extended by 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
(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
DistributedStoreQuery(JDBCStore store, ExpressionParser parser)
           
 
Method Summary
(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


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