Github user jackylk commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/916#discussion_r117386887
--- Diff:
core/src/main/java/org/apache/carbondata/core/scan/filter/partition/DefaultPartitionFilterImpl.java
---
@@ -0,0 +1,43 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.carbondata.core.scan.filter.partition;
+
+import java.util.BitSet;
+
+import org.apache.carbondata.core.scan.partition.PartitionUtil;
+import org.apache.carbondata.core.scan.partition.Partitioner;
+
+/**
+ * the default implement of partition filter
+ */
+public class DefaultPartitionFilterImpl implements PartitionFilterIntf {
+
+ /**
+ * true: all partitions are required
+ * false: no partition is required
+ */
+ private boolean isContainAll;
+
+ public DefaultPartitionFilterImpl(boolean isContainAll) {
--- End diff --
There is only one instance creation whose `isContainAll` is `false`
Can you make another implementation for it? I think the name `isContainAll`
is not intuitive.
```
case FALSE:
return new DefaultPartitionFilterImpl(false);
```
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