|
Oracle Fusion Middleware Java API Reference for Oracle TopLink 11g Release 1 (11.1.1) E28847-01 |
||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object
org.eclipse.persistence.config.ResultType
public class ResultType
Result type hint values. The class contains all the valid values for QueryHints.RESULT_TYPE query hint. By default in JPA for non-single select queries an Array of values is returned. If getSingleResult() is called the first array is returned, for getResultList() a List of arrays is returned.
i.e. "Select e.firstName, e.lastName from Employee e" returns List<Object[]>
or the native query, "SELECT * FROM EMPLOYEE" returns List<Object[]>
The ResultType can be used to instead return a Map of values (DatabaseRecord, ReportQueryResult).
It can also be used to return a single column, or single value. JPA Query Hint Usage:
query.setHint(QueryHints.RESULT_TYPE, ResultType.Map);
or
@QueryHint(name=QueryHints.RESULT_TYPE, value=ResultType.Map)
Hint values are case-insensitive. "" could be used instead of default value ResultType.Array.
QueryHints.RESULT_TYPE
, Record
, DatabaseRecord
, ReportQueryResult
, ReportQuery.setReturnType(int)
, org.eclipse.persistence.queries.DataReadQuery#setUseAbstractRecord(boolean)
Field Summary | |
---|---|
static java.lang.String |
Array An Object array of values is returned (List<Object[]> or Object[]). |
static java.lang.String |
Attribute A List of the first selected value is returned. |
static java.lang.String |
DEFAULT The default type is Array. |
static java.lang.String |
Map A Map of key value pairs is returned. |
static java.lang.String |
Value The first value of the first rows is returned. |
Constructor Summary | |
---|---|
ResultType() |
Method Summary |
---|
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
---|
public static final java.lang.String Array
public static final java.lang.String Map
public static final java.lang.String Attribute
public static final java.lang.String Value
public static final java.lang.String DEFAULT
Constructor Detail |
---|
public ResultType()
|
|
||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |