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From Heng Chen <heng.chen.1...@gmail.com>
Subject Re: Could i use Hive SQL parser in our application?
Date Thu, 19 May 2016 03:09:29 GMT
Hi, guys.

        I write one example as @furcy said like this.

public static void main(String[] args) throws SemanticException,
ParseException, IOException {
  String sql = "select * from table1 where a > 100";
  Context context = new Context(new HiveConf());
  ParseDriver pd = new ParseDriver();
  ASTNode tree = pd.parse(sql, context);
  System.out.println(tree);
}


When i run it,  exception thrown out,  did i miss something?


Exception in thread "main" java.lang.NullPointerException: Conf non-local
session path expected to be non-null
at com.google.common.base.Preconditions.checkNotNull(Preconditions.java:204)
at
org.apache.hadoop.hive.ql.session.SessionState.getHDFSSessionPath(SessionState.java:669)
at org.apache.hadoop.hive.ql.Context.<init>(Context.java:133)
at org.apache.hadoop.hive.ql.Context.<init>(Context.java:120)
at com.fenbi.pipe.utils.LineageInfoUtils.main(LineageInfoUtils.java:24)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)








2016-05-19 10:20 GMT+08:00 Heng Chen <heng.chen.1986@gmail.com>:

> Thanks guys!  Let me try it firstly.
>
> 2016-05-19 1:44 GMT+08:00 Pengcheng Xiong <pxiong@apache.org>:
>
>> Hi Heng,
>>
>>     Sure you can. Hive SQL parser is based on ANTLR and you can do that
>> by taking that part out of Hive and integrate in to your application.
>> Please let me know if you need any further help. Thanks.
>>
>> Best
>> Pengcheng Xiong
>>
>> On Wed, May 18, 2016 at 3:43 AM, Heng Chen <heng.chen.1986@gmail.com>
>> wrote:
>>
>>> Hi, guys.
>>>
>>>       Recently,  we need to integrate Hive SQL parser in our
>>> application.  Is there any way to do it?
>>>
>>> Thanks!
>>>
>>
>>
>

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