Class FederatedJDOQLQuery

java.lang.Object

org.datanucleus.store.query.Query

org.datanucleus.store.query.AbstractJavaQuery

org.datanucleus.store.query.AbstractJDOQLQuery

org.datanucleus.store.federation.FederatedJDOQLQuery

All Implemented Interfaces:

Serializable, ExecutionContextListener

public class FederatedJDOQLQuery
extends AbstractJDOQLQuery

JDOQL query that is federated across multiple datastores

See Also:

• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class Query

Query.QueryType, Query.SubqueryDefinition

Field Summary

Fields

Modifier and Type	Field	Description
private static final long	serialVersionUID

Fields inherited from class AbstractJavaQuery

candidateCollection, singleString

Fields inherited from class Query

candidateClass, candidateClassName, clr, compilation, ec, explicitParameters, explicitVariables, EXTENSION_CHECK_UNUSED_PARAMETERS, EXTENSION_CLOSE_RESULTS_AT_EC_CLOSE, EXTENSION_COMPILATION_CACHED, EXTENSION_COMPILE_OPTIMISE_VAR_THIS, EXTENSION_EVALUATE_IN_MEMORY, EXTENSION_EXCLUDE_SUBCLASSES, EXTENSION_FLUSH_BEFORE_EXECUTION, EXTENSION_JDOQL_ALLOW_ALL, EXTENSION_JDOQL_STRICT, EXTENSION_JPQL_ALLOW_RANGE, EXTENSION_JPQL_STRICT, EXTENSION_LOAD_RESULTS_AT_COMMIT, EXTENSION_QUERY_TYPE, EXTENSION_RESULT_CACHE_TYPE, EXTENSION_RESULT_CACHE_VALIDATE_OBJECTS, EXTENSION_RESULT_SIZE_METHOD, EXTENSION_RESULTS_CACHED, EXTENSION_SQL_ALLOW_ALL, EXTENSION_SQL_SYNTAX_CHECKS, EXTENSION_UPDATE_ALL_CANDIDATE_FIELDS, EXTENSION_USE_FETCH_PLAN, extensions, filter, from, fromInclNo, fromInclParam, grouping, having, ignoreCache, implicitParameters, imports, inputParameters, insertFields, insertSelectQuery, ordering, parameterNames, parsedImports, queryResults, range, result, resultClass, resultClassName, resultDistinct, storeMgr, subclasses, subqueries, tasks, toExclNo, toExclParam, type, unique, unmodifiable, update

Constructor Summary

Constructors

Constructor	Description
FederatedJDOQLQuery(StoreManager storeMgr, ExecutionContext ec)	Constructs a new query instance that uses the given execution context.
FederatedJDOQLQuery(StoreManager storeMgr, ExecutionContext ec, String query)	Constructor for a JDOQL query where the query is specified using the "Single-String" format.
FederatedJDOQLQuery(StoreManager storeMgr, ExecutionContext ec, FederatedJDOQLQuery q)	Constructs a new query instance having the same criteria as the given query.

Method Summary

Modifier and Type	Method	Description
protected Object	performExecute(Map parameters)	Method to actually execute the query.

Methods inherited from class AbstractJDOQLQuery

compileGeneric, compileInternal, compileSubqueries, getLanguage, getQueryCacheKey, getSingleStringQuery, getSupportedExtensions, setGrouping, setResult

Methods inherited from class AbstractJavaQuery

dereferenceFilter, discardCompiled, evaluateInMemory, performDeletePersistentAll, setCandidates, setCandidates, toString

Methods inherited from class Query

addExtension, addSubquery, applyImplicitParameterValueToCompilation, applyImplicitParameterValueToSubqueries, assertIsModifiable, assertIsOpen, assertSupportsCancel, cancel, cancel, cancelTaskObject, checkForMissingParameters, checkParameterTypesAgainstCompilation, checkUnusedParameters, close, closeAll, compile, declareExplicitParameters, declareExplicitVariables, declareImports, deepFindSymbolForParameterInCompilation, deletePersistentAll, deletePersistentAll, deletePersistentAll, deregisterTask, equals, execute, executeQuery, executeWithArray, executeWithMap, executionContextClosing, getBooleanExtensionProperty, getCandidateClass, getCandidateClassMetaData, getCandidateClassName, getCompilation, getDatastoreReadTimeoutMillis, getDatastoreWriteTimeoutMillis, getExecutionContext, getExplicitParametersDeclaration, getExplicitVariablesDeclaration, getExtension, getExtensions, getFetchPlan, getFilter, getFrom, getGrouping, getHaving, getIgnoreCache, getImplicitParameters, getImportsDeclaration, getInputParameters, getInsertFields, getInsertSelectQuery, getNativeQuery, getOrdering, getParameterMapForValues, getParsedImports, getQueryManager, getRange, getRangeFromIncl, getRangeFromInclParam, getRangeToExcl, getRangeToExclParam, getResult, getResultClass, getResultClassName, getResultDistinct, getSerializeRead, getStoreManager, getStringExtensionProperty, getSubqueryForVariable, getType, getUpdate, hashCode, hasSubqueryForVariable, isCompiled, isSubclasses, isUnique, isUnmodifiable, prepareDatastore, processesRangeInDatastoreQuery, registerTask, resolveClassDeclaration, setCacheResults, setCandidateClass, setCandidateClassName, setCompilation, setDatastoreReadTimeoutMillis, setDatastoreWriteTimeoutMillis, setExtensions, setFetchPlan, setFilter, setFrom, setHaving, setIgnoreCache, setImplicitParameter, setImplicitParameter, setInsertFields, setInsertSelectQuery, setOrdering, setRange, setRange, setResultClass, setResultClassName, setResultDistinct, setResultMetaData, setSerializeRead, setSubclasses, setType, setUnique, setUnmodifiable, setUpdate, shouldReturnSingleRow, supportsTimeout, useCaching, useFetchPlan, useResultsCaching

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

Constructor Details

FederatedJDOQLQuery

public FederatedJDOQLQuery(StoreManager storeMgr,
 ExecutionContext ec)

Constructs a new query instance that uses the given execution context.

Parameters:

storeMgr - StoreManager for this query

ec - execution context

FederatedJDOQLQuery

public FederatedJDOQLQuery(StoreManager storeMgr,
 ExecutionContext ec,
 FederatedJDOQLQuery q)

Constructs a new query instance having the same criteria as the given query.

Parameters:

storeMgr - StoreManager for this query

ec - execution context

q - The query from which to copy criteria.

FederatedJDOQLQuery

public FederatedJDOQLQuery(StoreManager storeMgr,
 ExecutionContext ec,
 String query)

Constructor for a JDOQL query where the query is specified using the "Single-String" format.

Parameters:

storeMgr - StoreManager for this query

ec - execution context

query - The query string

Method Details

performExecute

protected Object performExecute(Map parameters)

Description copied from class: Query

Method to actually execute the query. To be implemented by extending classes for the particular query language.

Specified by:

performExecute in class Query

Parameters:

parameters - Map containing the parameters.

Returns:

Query result - QueryResult if SELECT, or Long if BULK_UPDATE, BULK_DELETE