diff options
Diffstat (limited to 'src/main/java/com/amazon/carbonado/cursor')
| -rw-r--r-- | src/main/java/com/amazon/carbonado/cursor/FilteredCursor.java | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/main/java/com/amazon/carbonado/cursor/FilteredCursor.java b/src/main/java/com/amazon/carbonado/cursor/FilteredCursor.java index c25f8db..faf990d 100644 --- a/src/main/java/com/amazon/carbonado/cursor/FilteredCursor.java +++ b/src/main/java/com/amazon/carbonado/cursor/FilteredCursor.java @@ -38,6 +38,27 @@ import com.amazon.carbonado.filter.OpenFilter; */
public abstract class FilteredCursor<S> extends AbstractCursor<S> {
/**
+ * Returns a Cursor that is filtered by the given filter expression and values.
+ *
+ * @param cursor cursor to wrap
+ * @param type type of storable
+ * @param filter filter to apply
+ * @param filterValues values for filter
+ * @return wrapped cursor which filters results
+ * @throws IllegalStateException if any values are not specified
+ * @throws IllegalArgumentException if any argument is null
+ */
+ public static <S extends Storable> Cursor<S> applyFilter(Cursor<S> cursor,
+ Class<S> type,
+ String filter,
+ Object... filterValues)
+ {
+ Filter<S> f = Filter.filterFor(type, filter).bind();
+ FilterValues<S> fv = f.initialFilterValues().withValues(filterValues);
+ return applyFilter(f, fv, cursor);
+ }
+
+ /**
* Returns a Cursor that is filtered by the given Filter and FilterValues.
* The given Filter must be composed only of the same PropertyFilter
* instances as used to construct the FilterValues. An
@@ -61,6 +82,9 @@ public abstract class FilteredCursor<S> extends AbstractCursor<S> { throw new IllegalArgumentException();
}
+ // Make sure the filter is the same one that filterValues should be using.
+ filter = filter.bind();
+
return FilteredCursorGenerator.getFactory(filter)
.newFilteredCursor(cursor, filterValues.getValuesFor(filter));
}
|