According to https://javaee.github.io/javaee-spec/javadocs/javax/persistence/Query.html#setMaxResults-int-
{code:java}
maxResult - maximum number of results to retrieve
{code}
The documentation does not specify that maxResult must be >0. Also, previous Hibernate versions did not ignore maxResult == 0.
The problem is that LimitHelper.hasMaxRows() ignores parameter completely (providing the whole result set) if it is == 0:
{code:java}
public static boolean hasMaxRows(RowSelection selection) {
return selection != null && selection.getMaxRows() != null && selection.getMaxRows() > 0;
}
public static boolean useLimit(LimitHandler limitHandler, RowSelection selection) {
return limitHandler.supportsLimit() && hasMaxRows( selection );
}
{code}
It breaks legacy behavior, so rather serious problem. |
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