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From wengyanqing <...@git.apache.org>
Subject [GitHub] incubator-hawq pull request #1349: HAWQ-1598. Vectorized Scan Node Framework...
Date Thu, 29 Mar 2018 02:54:25 GMT
Github user wengyanqing commented on a diff in the pull request:

    https://github.com/apache/incubator-hawq/pull/1349#discussion_r177941951
  
    --- Diff: contrib/vexecutor/execVScan.c ---
    @@ -0,0 +1,167 @@
    +/*
    + * 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.
    + */
    +
    +#include "execVScan.h"
    +#include "miscadmin.h"
    +
    +static TupleTableSlot*
    +ExecVScan(ScanState *node, ExecScanAccessMtd accessMtd);
    +
    +static const ScanMethod *
    +getVScanMethod(int tableType)
    +{
    +    static const ScanMethod scanMethods[] =
    +            {
    +                    //HEAPSCAN
    +                    {
    +                    },
    +                    //APPENDONLYSCAN
    +                    {
    +                            &AppendOnlyScanNext, &BeginScanAppendOnlyRelation,
&EndScanAppendOnlyRelation,
    --- End diff --
    
    Are these scan functions placeholders?


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