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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-3232) Modify existing vectors to allow type promotion
Date Fri, 30 Oct 2015 05:05:27 GMT

    [ https://issues.apache.org/jira/browse/DRILL-3232?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14981898#comment-14981898
] 

ASF GitHub Bot commented on DRILL-3232:
---------------------------------------

Github user jacques-n commented on a diff in the pull request:

    https://github.com/apache/drill/pull/207#discussion_r43472075
  
    --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/expr/fn/ExceptionFunction.java
---
    @@ -0,0 +1,53 @@
    +/**
    + * 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
    + * <p/>
    + * http://www.apache.org/licenses/LICENSE-2.0
    + * <p/>
    + * 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.drill.exec.expr.fn;
    +
    +import org.apache.drill.common.exceptions.DrillRuntimeException;
    +import org.apache.drill.exec.expr.DrillSimpleFunc;
    +import org.apache.drill.exec.expr.annotations.FunctionTemplate;
    +import org.apache.drill.exec.expr.annotations.FunctionTemplate.FunctionScope;
    +import org.apache.drill.exec.expr.annotations.Output;
    +import org.apache.drill.exec.expr.annotations.Param;
    +import org.apache.drill.exec.expr.holders.BigIntHolder;
    +import org.apache.drill.exec.expr.holders.VarCharHolder;
    +
    +public class ExceptionFunction {
    +
    +  public static final String EXCEPTION_FUNCTION_NAME = "throwException";
    +
    +  @FunctionTemplate(name = EXCEPTION_FUNCTION_NAME, isRandom = true,
    +          scope = FunctionScope.SIMPLE, nulls = FunctionTemplate.NullHandling.NULL_IF_NULL)
    +  public static class ThrowException implements DrillSimpleFunc {
    +
    +    @Param VarCharHolder message;
    +    @Output BigIntHolder out;
    +
    +    public void setup() {
    +    }
    +
    +    public void eval() {
    +      byte[] bytes = new byte[message.end - message.start];
    --- End diff --
    
    I'm pretty sure we have a utility method that converts from buffer to string.


> Modify existing vectors to allow type promotion
> -----------------------------------------------
>
>                 Key: DRILL-3232
>                 URL: https://issues.apache.org/jira/browse/DRILL-3232
>             Project: Apache Drill
>          Issue Type: Sub-task
>          Components: Execution - Codegen, Execution - Data Types, Execution - Relational
Operators, Functions - Drill
>            Reporter: Steven Phillips
>            Assignee: Hanifi Gunes
>             Fix For: 1.3.0
>
>
> Support the ability for existing vectors to be promoted similar to supported implicit
casting rules.
> For example:
> INT > DOUBLE > STRING > EMBEDDED



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