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HHH-6076 - query with setFirstResult throws Exception on derby

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This commit is contained in:
Strong Liu 2011-04-07 01:59:56 +08:00
parent 7b4998d1ce
commit de38d784c7
2 changed files with 40 additions and 11 deletions
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34
hibernate-core/src/main/java/org/hibernate/loader/Loader.java
View File

@ -1685,6 +1685,19 @@ private static boolean useLimit(final RowSelection selection, final Dialect dial
return dialect.supportsLimit() && hasMaxRows( selection ); return dialect.supportsLimit() && hasMaxRows( selection );
} }
private ScrollMode getScrollMode(boolean scroll, QueryParameters queryParameters, boolean hasFirstRow, boolean useLimitOffSet) {
final boolean canScroll = getFactory().getSettings().isScrollableResultSetsEnabled();
if ( !canScroll ) {
return null;
}
if ( scroll ) {
return queryParameters.getScrollMode();
}
if ( hasFirstRow && !useLimitOffSet ) {
return ScrollMode.SCROLL_INSENSITIVE;
}
return null;
}
/** /**
* Obtain a <tt>PreparedStatement</tt> with all parameters pre-bound. * Obtain a <tt>PreparedStatement</tt> with all parameters pre-bound.
* Bind JDBC-style <tt>?</tt> parameters, named parameters, and * Bind JDBC-style <tt>?</tt> parameters, named parameters, and
@ -1701,24 +1714,23 @@ protected final PreparedStatement prepareQueryStatement(
final RowSelection selection = queryParameters.getRowSelection(); final RowSelection selection = queryParameters.getRowSelection();
boolean useLimit = useLimit( selection, dialect ); boolean useLimit = useLimit( selection, dialect );
boolean hasFirstRow = getFirstRow( selection ) > 0; boolean hasFirstRow = getFirstRow( selection ) > 0;
boolean useOffset = hasFirstRow && useLimit && dialect.supportsLimitOffset(); boolean useLimitOffset = hasFirstRow && useLimit && dialect.supportsLimitOffset();
boolean callable = queryParameters.isCallable(); boolean callable = queryParameters.isCallable();
final boolean canScroll = getFactory().getSettings().isScrollableResultSetsEnabled(); final boolean canScroll = getFactory().getSettings().isScrollableResultSetsEnabled();
final boolean useScrollableResultSetToSkip = hasFirstRow && final boolean useScrollableResultSetToSkip = hasFirstRow &&
!useOffset && !useLimitOffset && canScroll;
getFactory().getSettings().isScrollableResultSetsEnabled(); ScrollMode scrollMode = getScrollMode(scroll,queryParameters,hasFirstRow,useLimit);
final ScrollMode scrollMode = //
canScroll // if(canScroll && ( scroll || useScrollableResultSetToSkip )){
? scroll || useScrollableResultSetToSkip // scrollMode = scroll ? queryParameters.getScrollMode() : ScrollMode.SCROLL_INSENSITIVE;
? queryParameters.getScrollMode() // }else{
: ScrollMode.SCROLL_INSENSITIVE // scrollMode = null;
: null; // }
if ( useLimit ) { if ( useLimit ) {
sql = dialect.getLimitString( sql = dialect.getLimitString(
sql.trim(), //use of trim() here is ugly? sql.trim(), //use of trim() here is ugly?
useOffset ? getFirstRow(selection) : 0, useLimitOffset ? getFirstRow(selection) : 0,
getMaxOrLimit(selection, dialect) getMaxOrLimit(selection, dialect)
); );
} }

17
hibernate-core/src/test/java/org/hibernate/test/pagination/PaginationTest.java
View File

@ -91,6 +91,23 @@ public void testLimit() {
cleanupTestData(); cleanupTestData();
} }
@Test
public void testOffset(){
prepareTestData();
Session session = openSession();
session.beginTransaction();
List result;
result = generateBaseHQLQuery( session )
.setFirstResult( 3 )
.list();
result = generateBaseCriteria( session )
.setFirstResult( 3 )
.list();
session.getTransaction().commit();
session.close();
cleanupTestData();
}
@Test @Test
@RequiresDialectFeature( @RequiresDialectFeature(