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From zellerh <>
Subject [GitHub] incubator-trafodion pull request #702: optimize using of udf
Date Wed, 14 Sep 2016 16:02:46 GMT
Github user zellerh commented on a diff in the pull request:
    --- Diff: core/sql/src/main/java/org/trafodion/sql/udr/ ---
    @@ -0,0 +1,105 @@
    +// @@@ START COPYRIGHT @@@
    +// 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
    +// Unless required by applicable law or agreed to in writing,
    +// software distributed under the License is distributed on an
    +// KIND, either express or implied.  See the License for the
    +// specific language governing permissions and limitations
    +// under the License.
    +// @@@ END COPYRIGHT @@@
    +package org.trafodion.sql.udr;
    +import java.util.ArrayList;
    +import java.util.Date;
    +import java.util.List;
    +import org.apache.log4j.Logger;
    +import org.trafodion.sql.udr.TypeInfo.SQLTypeCode;
    +public abstract class SimpleUDR extends UDR {
    +    private static Logger log = Logger.getLogger(SimpleUDR.class.getName());
    +    private List<ColumnInfo> columns = new ArrayList<ColumnInfo>();
    +    UDRInvocationInfo info = null;
    --- End diff --
    The UDR class can be used for multiple UDR invocations, possibly at the same time, so
you can't cache the UDRInvocationInfo in it.

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