org.apache.openjpa.persistence
Interface OpenJPAQuery

All Known Subinterfaces:

OpenJPAQuerySPI

All Known Implementing Classes:

QueryImpl

public interface OpenJPAQuery

Interface implemented by OpenJPA queries.

Since:

0.4.0

Author:

Abe White

Field Summary

static String

HINT_RESULT_COUNT Hint key for specifying the number of rows to optimize for.

Method Summary

OpenJPAQuery	closeAll() Close all open query results.
OpenJPAQuery	compile() Compile the query.
Collection	getCandidateCollection() Return the candidate collection, or null if an extent was specified instead of a collection.
String[]	getDataStoreActions(Map params) Returns a description of the commands that will be sent to the datastore in order to execute this query.
OpenJPAEntityManager	getEntityManager() The owning entity manager.
FetchPlan	getFetchPlan() Fetch plan for controlling the loading of results.
int	getFirstResult() Return the 0-based start index for the returned results.
FlushModeType	getFlushMode() Return the current flush mode.
boolean	getIgnoreChanges() Whether to ignore changes in the current transaction.
String	getLanguage() Query language.
int	getMaxResults() Return the maximum number of results to retrieve.
Map	getNamedParameters() The named parameters for the query; empty map if none or if query uses named parameters.
QueryOperationType	getOperation() Query operation type.
Object[]	getPositionalParameters() The positional parameters for the query; empty array if none or if query uses named parameters.
String	getQueryString() Query string.
Class	getResultClass() Query result element type.
boolean	hasPositionalParameters() Whether this query has positional parameters.
boolean	hasSubclasses() Whether subclasses are included in the query results.
OpenJPAQuery	setCandidateCollection(Collection coll) Set a collection of candidates.
OpenJPAQuery	setFirstResult(int startPosition)
OpenJPAQuery	setFlushMode(FlushModeType flushMode)
OpenJPAQuery	setHint(String hintName, Object value)
OpenJPAQuery	setIgnoreChanges(boolean ignore) Whether to ignore changes in the current transaction.
OpenJPAQuery	setMaxResults(int maxResult)
OpenJPAQuery	setParameter(int position, Calendar value, TemporalType temporalType)
OpenJPAQuery	setParameter(int position, Date value, TemporalType temporalType)
OpenJPAQuery	setParameter(int position, Object value)
OpenJPAQuery	setParameter(String name, Calendar value, TemporalType temporalType)
OpenJPAQuery	setParameter(String name, Date value, TemporalType temporalType)
OpenJPAQuery	setParameter(String name, Object value)
OpenJPAQuery	setParameters(Map params) Set parameters.
OpenJPAQuery	setParameters(Object... params) Set parameters.
OpenJPAQuery	setResultClass(Class type) Query result element type.
OpenJPAQuery	setSubclasses(boolean subs) Whether subclasses are included in the query results.

Field Detail

HINT_RESULT_COUNT

static final String HINT_RESULT_COUNT

Hint key for specifying the number of rows to optimize for.

See Also:

Constant Field Values

Method Detail

getEntityManager

OpenJPAEntityManager getEntityManager()

The owning entity manager.

getLanguage

String getLanguage()

Query language.

getOperation

QueryOperationType getOperation()

Query operation type.

getFetchPlan

FetchPlan getFetchPlan()

Fetch plan for controlling the loading of results.

getQueryString

String getQueryString()

Query string.

getIgnoreChanges

boolean getIgnoreChanges()

Whether to ignore changes in the current transaction.

setIgnoreChanges

OpenJPAQuery setIgnoreChanges(boolean ignore)

Whether to ignore changes in the current transaction.

getCandidateCollection

Collection getCandidateCollection()

Return the candidate collection, or null if an extent was specified instead of a collection.

setCandidateCollection

OpenJPAQuery setCandidateCollection(Collection coll)

Set a collection of candidates.

getResultClass

Class getResultClass()

Query result element type.

setResultClass

OpenJPAQuery setResultClass(Class type)

Query result element type.

hasSubclasses

boolean hasSubclasses()

Whether subclasses are included in the query results.

setSubclasses

OpenJPAQuery setSubclasses(boolean subs)

Whether subclasses are included in the query results.

getFirstResult

int getFirstResult()

Return the 0-based start index for the returned results.

getMaxResults

int getMaxResults()

Return the maximum number of results to retrieve. or Integer.MAX_VALUE for no limit.

compile

OpenJPAQuery compile()

Compile the query.

hasPositionalParameters

boolean hasPositionalParameters()

Whether this query has positional parameters.

getPositionalParameters

Object[] getPositionalParameters()

The positional parameters for the query; empty array if none or if query uses named parameters.

getNamedParameters

Map getNamedParameters()

The named parameters for the query; empty map if none or if query uses named parameters.

setParameters

OpenJPAQuery setParameters(Map params)

Set parameters.

setParameters

OpenJPAQuery setParameters(Object... params)

Set parameters.

closeAll

OpenJPAQuery closeAll()

Close all open query results.

getDataStoreActions

String[] getDataStoreActions(Map params)

Returns a description of the commands that will be sent to the datastore in order to execute this query. This will typically be in the native query language of the database (e.g., SQL).

Parameters:

params - the named parameter map for the query invocation

setMaxResults

OpenJPAQuery setMaxResults(int maxResult)

setFirstResult

OpenJPAQuery setFirstResult(int startPosition)

setHint

OpenJPAQuery setHint(String hintName,
                     Object value)

setParameter

OpenJPAQuery setParameter(String name,
                          Object value)

setParameter

OpenJPAQuery setParameter(String name,
                          Date value,
                          TemporalType temporalType)

setParameter

OpenJPAQuery setParameter(String name,
                          Calendar value,
                          TemporalType temporalType)

setParameter

OpenJPAQuery setParameter(int position,
                          Object value)

setParameter

OpenJPAQuery setParameter(int position,
                          Date value,
                          TemporalType temporalType)

setParameter

OpenJPAQuery setParameter(int position,
                          Calendar value,
                          TemporalType temporalType)

setFlushMode

OpenJPAQuery setFlushMode(FlushModeType flushMode)

getFlushMode

FlushModeType getFlushMode()

Return the current flush mode.