[GitHub] [pinot] amrishlal commented on a change in pull request #7916: FILTER Clauses for Aggregates

[GitBox <gi...@apache.org>]

amrishlal commented on a change in pull request #7916:
URL: https://github.com/apache/pinot/pull/7916#discussion_r785070053



##########
File path: pinot-core/src/main/java/org/apache/pinot/core/operator/SwimLaneDocIdSetOperator.java
##########
@@ -0,0 +1,111 @@
+/**
+ * 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.pinot.core.operator;
+
+import com.google.common.base.Preconditions;
+import java.util.Arrays;
+import java.util.List;
+import javax.annotation.Nullable;
+import org.apache.pinot.common.request.context.ExpressionContext;
+import org.apache.pinot.core.common.BlockDocIdIterator;
+import org.apache.pinot.core.common.Operator;
+import org.apache.pinot.core.operator.blocks.CombinedFilterBlock;
+import org.apache.pinot.core.operator.blocks.DocIdSetBlock;
+import org.apache.pinot.core.operator.blocks.FilterBlock;
+import org.apache.pinot.core.operator.docidsets.FilterBlockDocIdSet;
+import org.apache.pinot.core.operator.filter.CombinedFilterOperator;
+import org.apache.pinot.core.plan.DocIdSetPlanNode;
+import org.apache.pinot.segment.spi.Constants;
+
+/**
+ * DocIdSetOperator for a swimlane query plan.
+ */
+public class SwimLaneDocIdSetOperator extends DocIdSetOperator {
+  private static final String OPERATOR_NAME = "SwimLaneDocIdSetOperator";
+
+  private final CombinedFilterOperator _filterOperator;
+  private final ExpressionContext _expressionContext;
+  private final int _maxSizeOfDocIdSet;
+
+  private FilterBlockDocIdSet _filterBlockDocIdSet;
+  private BlockDocIdIterator _blockDocIdIterator;
+  private int _currentDocId = 0;
+
+  public SwimLaneDocIdSetOperator(CombinedFilterOperator filterOperator, ExpressionContext expressionContext,
+      int maxSizeOfDocIdSet) {
+    super(filterOperator, maxSizeOfDocIdSet);
+
+    Preconditions.checkArgument(maxSizeOfDocIdSet > 0 && maxSizeOfDocIdSet <= DocIdSetPlanNode.MAX_DOC_PER_CALL);
+    _filterOperator = filterOperator;
+    _expressionContext = expressionContext;
+    _maxSizeOfDocIdSet = maxSizeOfDocIdSet;
+  }
+
+  @Override
+  public String getOperatorName() {
+    return OPERATOR_NAME;
+  }
+
+  @Override
+  public List<Operator> getChildOperators() {
+    return Arrays.asList(_filterOperator);
+  }
+
+  @Nullable
+  @Override
+  public String toExplainString() {
+    return null;

Review comment:
       This hasn't been resolved yet. It is still returning null.




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