I'm thinking that because of the usage of this scenario I only need to
implement one method for each decorator like in the following example?
static {
final SmileFactory smileFactory=new
SmileFactory().disable(ENCODE_BINARY_AS_7BIT);
smileFactory.setInputDecorator(new InputDecorator()
{
@Override
public InputStream decorate(IOContext context,InputStream
inputStream) throws IOException
{
return new GZIPInputStream(inputStream);
}
@Override
public InputStream decorate(IOContext context,byte[] bytes,int i,int
i1)
{
return null;
}
@Override
public Reader decorate(IOContext ioContext,Reader reader)
{
return null;
}
});
smileFactory.setOutputDecorator(new OutputDecorator()
{
@Override
public OutputStream decorate(IOContext context,OutputStream
outputStream) throws IOException
{
return new GZIPOutputStream(outputStream);
}
@Override
public Writer decorate(IOContext context,Writer writer)
{
return null;
}
});
GZIP_SMILE_MAPPER=new ObjectMapper(smileFactory).
disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES).
disable(SerializationFeature.FAIL_ON_EMPTY_BEANS).
setSerializationInclusion(JsonInclude.Include.NON_NULL).
disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS).
registerModule(INT_RANGE_MODULE).
registerModule(JODA_MODULE).
registerModule(TAGS_MODULE);
}
Thanks again for your support and great framework ;-)
Guido.
On Saturday, November 24, 2018 at 10:56:21 AM UTC, [email protected] wrote:
>
> Hi Tatu,
>
> This looks exactly like what I need, I know this is not a responsibility
> of the *ObjectMapper* but the 3rd party API isn't giving me much freedom
> so I cannot compress myself,
> I'm wondering if I can decorate the *SmileFactory* using this approach?
> As the SmileFactory without the extra string compression is the fastest of
> the bunch.
> Also, are there examples on how to use these Input/Output decorators,
> thanks a lot for answering as this is a huge step towards the solution.
>
> Guido.
>
> On Saturday, November 24, 2018 at 4:37:54 AM UTC, Tatu Saloranta wrote:
>>
>> On Fri, Nov 23, 2018 at 8:17 PM <[email protected]> wrote:
>> >
>> > Hi,
>> >
>> > I have been scratching my head for the last hour or two looking for a
>> Gzip JsonFactory or any other type of factory that is able to compress huge
>> Json objects,
>> > I know I'm going to sacrifice some performance but for this particular
>> scenario I need a JsonFactory -or ObjectMapper- that is able to gzip.
>> > Is there any opensource project that has that done already? or what
>> would be the simplest way to write one?
>> > I could gzip the output of the ObjectMapper but this is not an option
>> before I'm using a 3rd party framework that requires me to pass an
>> ObjectMapper
>>
>> This sort of falls outside realm of ObjectMapper in my opinion (and
>> why just gzip? Snappy, lz4, bz2, there's plethora of compression
>> codecs to support).
>>
>> But there is one extension point in JsonFactory (part of `jackson-core`):
>>
>> JsonFactory.setOutputDecorator(OutputDecorator decoratorImpl);
>>
>> which you can use to install a decorator that will add compression
>> codec into `OutputStream` when `decorate(OutputStream)` method is
>> called.
>> So you can construct and configure `JsonFactory`, construct
>> `ObjectMapper` with it, and that should allow you to add compression.
>>
>> I hope this helps,
>>
>> -+ Tatu +-
>>
>
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