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https://issues.apache.org/jira/browse/TAJO-774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14009796#comment-14009796
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ASF GitHub Bot commented on TAJO-774:
-------------------------------------
Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/13#discussion_r13083687
--- Diff:
tajo-core/src/main/java/org/apache/tajo/engine/eval/WindowFunctionEval.java ---
@@ -0,0 +1,100 @@
+/**
+ * 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.tajo.engine.eval;
+
+import com.google.gson.annotations.Expose;
+import org.apache.tajo.algebra.WindowSpecExpr;
+import org.apache.tajo.catalog.FunctionDesc;
+import org.apache.tajo.catalog.Schema;
+import org.apache.tajo.catalog.SortSpec;
+import org.apache.tajo.common.TajoDataTypes.DataType;
+import org.apache.tajo.datum.Datum;
+import org.apache.tajo.engine.function.AggFunction;
+import org.apache.tajo.engine.function.FunctionContext;
+import org.apache.tajo.engine.planner.logical.WindowSpec;
+import org.apache.tajo.storage.Tuple;
+import org.apache.tajo.storage.VTuple;
+
+public class WindowFunctionEval extends AggregationFunctionCallEval
implements Cloneable {
+ @Expose private SortSpec [] sortSpecs;
+ @Expose WindowSpec.WindowFrame windowFrame;
+ private Tuple params;
--- End diff --
'Expose' is missed.
> Implement logical plan part and physical executor for window function.
> ----------------------------------------------------------------------
>
> Key: TAJO-774
> URL: https://issues.apache.org/jira/browse/TAJO-774
> Project: Tajo
> Issue Type: Sub-task
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.9.0
>
>
> See the title. The main objective of this issue is to implement the logical
> planning part for window function support.
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