Re: Does derby have an embedded Mode like Derby ?

From: Paul Taylor <ijabz(at)fastmail(dot)fm>
To: Bill Moran <wmoran(at)potentialtech(dot)com>, pgsql-general(at)postgresql(dot)org
Subject: Re: Does derby have an embedded Mode like Derby ?
Date: 2009-08-04 15:37:23
Message-ID: 4A7855B3.1060605@fastmail.fm
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Bill Moran wrote:
> In response to Paul Taylor <ijabz(at)fastmail(dot)fm>:
>
>
>> Bill Moran wrote:
>>
>>> In response to Paul Taylor <ijabz(at)fastmail(dot)fm>:
>>>
>>>
>>>> Sam Mason wrote:
>>>>
>>>>
>>>>> On Tue, Aug 04, 2009 at 01:37:34PM +0100, Paul Taylor wrote:
>>>>>
>>>>>
>>>>>
>>>>>> Does postgres have an embedded mode to allow a database to be embedded
>>>>>> with Java application without requiring seperate db manager, like the
>>>>>> derby database does ?
>>>>>>
>>>>>>
>>>>> No, and I think the consensus is that this would be bad. See:
>>>>>
>>>>> http://wiki.postgresql.org/wiki/FAQ#Can_PostgreSQL_be_embedded.3F
>>>>>
>>>>>
>>>> Thats a shame, I wanted to write junit test for a java program that
>>>> queried a database, requiring a full database to be available for unit
>>>> tests is not really an environment I want to have.
>>>>
>>> Has it occurred to you that testing a DB client when there's no
>>> DB isn't really a very accurate or realistic test?
>>>
>> I am testing the code that extracts information from a read only
>> database. These are UNIT tests so only interested in getting the right
>> results given a particular set of data, anything else is a distraction.
>>
>
> Then replace the DB client class with a class that returns fabricated
> data for the purpose of your test.
>
Won't work because I am writing SQL and I want to test the SQL is correct

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