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Posted to dev@hc.apache.org by Gary Gregory <ga...@gmail.com> on 2017/05/08 01:31:21 UTC

org.apache.hc.client5.http.entity.GzipDecompressingEntity refactoring (less garbage)

Hi all,

How about making DecompressingEntity implementations reuse their same
factories since they are stateless?

Like this:

Index:
src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEntity.java
===================================================================
---
src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEntity.java
(revision
1794275)
+++
src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEntity.java
(working
copy)
@@ -33,29 +33,31 @@
 import org.apache.hc.core5.http.HttpEntity;

 /**
- * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
handling gzip
- * Content Coded responses.
+ * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
handling
+ * gzip Content Coded responses.
  *
  * @since 4.1
  */
 public class GzipDecompressingEntity extends DecompressingEntity {

+    private static final InputStreamFactory inputStreamFactory = new
InputStreamFactory() {
+
+        @Override
+        public InputStream create(final InputStream instream) throws
IOException {
+            return new GZIPInputStream(instream);
+        }
+
+    };
+
     /**
-     * Creates a new {@link GzipDecompressingEntity} which will wrap the
specified
-     * {@link HttpEntity}.
+     * Creates a new {@link GzipDecompressingEntity} which will wrap the
+     * specified {@link HttpEntity}.
      *
      * @param entity
      *            the non-null {@link HttpEntity} to be wrapped
      */
     public GzipDecompressingEntity(final HttpEntity entity) {
-        super(entity, new InputStreamFactory() {
-
-            @Override
-            public InputStream create(final InputStream instream) throws
IOException {
-                return new GZIPInputStream(instream);
-            }
-
-        });
+        super(entity, inputStreamFactory);
     }

 }

and the same for other DecompressingEntity implementations.

Gary

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Re: org.apache.hc.client5.http.entity.GzipDecompressingEntity refactoring (less garbage)

Posted by Gary Gregory <ga...@gmail.com>.
Thoughts for or against porting this to 4.4.x?

Gary

On Mon, May 8, 2017 at 9:27 AM, Gary Gregory <ga...@gmail.com> wrote:

> I'm going to take this patch a little further since I found more than one
> place that does a "new InputStreamFactory() {...}". I am creating a
> GZIPInputStreamFactory class and DeflateInputStreamFactory class which will
> have singletons. That's what will be reused. That should make things
> clearer and neater esp. looking ahead to the httpclient5-compress module.
>
> Gary
>
> Gary
>
> On Mon, May 8, 2017 at 12:09 AM, Oleg Kalnichevski <ol...@apache.org>
> wrote:
>
>> On Sun, 2017-05-07 at 18:31 -0700, Gary Gregory wrote:
>> > Hi all,
>> >
>> > How about making DecompressingEntity implementations reuse their same
>> > factories since they are stateless?
>> >
>>
>> +1
>>
>> Oleg
>>
>> > Like this:
>> >
>> > Index:
>> > src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
>> > ty.java
>> > ===================================================================
>> > ---
>> > src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
>> > ty.java
>> > (revision
>> > 1794275)
>> > +++
>> > src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
>> > ty.java
>> > (working
>> > copy)
>> > @@ -33,29 +33,31 @@
>> >  import org.apache.hc.core5.http.HttpEntity;
>> >
>> >  /**
>> > - * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
>> > handling gzip
>> > - * Content Coded responses.
>> > + * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
>> > handling
>> > + * gzip Content Coded responses.
>> >   *
>> >   * @since 4.1
>> >   */
>> >  public class GzipDecompressingEntity extends DecompressingEntity {
>> >
>> > +    private static final InputStreamFactory inputStreamFactory = new
>> > InputStreamFactory() {
>> > +
>> > +        @Override
>> > +        public InputStream create(final InputStream instream) throws
>> > IOException {
>> > +            return new GZIPInputStream(instream);
>> > +        }
>> > +
>> > +    };
>> > +
>> >      /**
>> > -     * Creates a new {@link GzipDecompressingEntity} which will wrap
>> > the
>> > specified
>> > -     * {@link HttpEntity}.
>> > +     * Creates a new {@link GzipDecompressingEntity} which will wrap
>> > the
>> > +     * specified {@link HttpEntity}.
>> >       *
>> >       * @param entity
>> >       *            the non-null {@link HttpEntity} to be wrapped
>> >       */
>> >      public GzipDecompressingEntity(final HttpEntity entity) {
>> > -        super(entity, new InputStreamFactory() {
>> > -
>> > -            @Override
>> > -            public InputStream create(final InputStream instream)
>> > throws
>> > IOException {
>> > -                return new GZIPInputStream(instream);
>> > -            }
>> > -
>> > -        });
>> > +        super(entity, inputStreamFactory);
>> >      }
>> >
>> >  }
>> >
>> > and the same for other DecompressingEntity implementations.
>> >
>> > Gary
>> >
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: dev-unsubscribe@hc.apache.org
>> For additional commands, e-mail: dev-help@hc.apache.org
>>
>>
>
>
> --
> E-Mail: garydgregory@gmail.com | ggregory@apache.org
> Java Persistence with Hibernate, Second Edition
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>
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> Tweet! http://twitter.com/GaryGregory
>



-- 
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Re: org.apache.hc.client5.http.entity.GzipDecompressingEntity refactoring (less garbage)

Posted by Gary Gregory <ga...@gmail.com>.
I'm going to take this patch a little further since I found more than one
place that does a "new InputStreamFactory() {...}". I am creating a
GZIPInputStreamFactory class and DeflateInputStreamFactory class which will
have singletons. That's what will be reused. That should make things
clearer and neater esp. looking ahead to the httpclient5-compress module.

Gary

Gary

On Mon, May 8, 2017 at 12:09 AM, Oleg Kalnichevski <ol...@apache.org> wrote:

> On Sun, 2017-05-07 at 18:31 -0700, Gary Gregory wrote:
> > Hi all,
> >
> > How about making DecompressingEntity implementations reuse their same
> > factories since they are stateless?
> >
>
> +1
>
> Oleg
>
> > Like this:
> >
> > Index:
> > src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
> > ty.java
> > ===================================================================
> > ---
> > src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
> > ty.java
> > (revision
> > 1794275)
> > +++
> > src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
> > ty.java
> > (working
> > copy)
> > @@ -33,29 +33,31 @@
> >  import org.apache.hc.core5.http.HttpEntity;
> >
> >  /**
> > - * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
> > handling gzip
> > - * Content Coded responses.
> > + * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
> > handling
> > + * gzip Content Coded responses.
> >   *
> >   * @since 4.1
> >   */
> >  public class GzipDecompressingEntity extends DecompressingEntity {
> >
> > +    private static final InputStreamFactory inputStreamFactory = new
> > InputStreamFactory() {
> > +
> > +        @Override
> > +        public InputStream create(final InputStream instream) throws
> > IOException {
> > +            return new GZIPInputStream(instream);
> > +        }
> > +
> > +    };
> > +
> >      /**
> > -     * Creates a new {@link GzipDecompressingEntity} which will wrap
> > the
> > specified
> > -     * {@link HttpEntity}.
> > +     * Creates a new {@link GzipDecompressingEntity} which will wrap
> > the
> > +     * specified {@link HttpEntity}.
> >       *
> >       * @param entity
> >       *            the non-null {@link HttpEntity} to be wrapped
> >       */
> >      public GzipDecompressingEntity(final HttpEntity entity) {
> > -        super(entity, new InputStreamFactory() {
> > -
> > -            @Override
> > -            public InputStream create(final InputStream instream)
> > throws
> > IOException {
> > -                return new GZIPInputStream(instream);
> > -            }
> > -
> > -        });
> > +        super(entity, inputStreamFactory);
> >      }
> >
> >  }
> >
> > and the same for other DecompressingEntity implementations.
> >
> > Gary
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@hc.apache.org
> For additional commands, e-mail: dev-help@hc.apache.org
>
>


-- 
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Re: org.apache.hc.client5.http.entity.GzipDecompressingEntity refactoring (less garbage)

Posted by Oleg Kalnichevski <ol...@apache.org>.
On Sun, 2017-05-07 at 18:31 -0700, Gary Gregory wrote:
> Hi all,
> 
> How about making DecompressingEntity implementations reuse their same
> factories since they are stateless?
> 

+1

Oleg

> Like this:
> 
> Index:
> src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
> ty.java
> ===================================================================
> ---
> src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
> ty.java
> (revision
> 1794275)
> +++
> src/main/java/org/apache/hc/client5/http/entity/GzipDecompressingEnti
> ty.java
> (working
> copy)
> @@ -33,29 +33,31 @@
>  import org.apache.hc.core5.http.HttpEntity;
> 
>  /**
> - * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
> handling gzip
> - * Content Coded responses.
> + * {@link org.apache.hc.core5.http.io.entity.HttpEntityWrapper} for
> handling
> + * gzip Content Coded responses.
>   *
>   * @since 4.1
>   */
>  public class GzipDecompressingEntity extends DecompressingEntity {
> 
> +    private static final InputStreamFactory inputStreamFactory = new
> InputStreamFactory() {
> +
> +        @Override
> +        public InputStream create(final InputStream instream) throws
> IOException {
> +            return new GZIPInputStream(instream);
> +        }
> +
> +    };
> +
>      /**
> -     * Creates a new {@link GzipDecompressingEntity} which will wrap
> the
> specified
> -     * {@link HttpEntity}.
> +     * Creates a new {@link GzipDecompressingEntity} which will wrap
> the
> +     * specified {@link HttpEntity}.
>       *
>       * @param entity
>       *            the non-null {@link HttpEntity} to be wrapped
>       */
>      public GzipDecompressingEntity(final HttpEntity entity) {
> -        super(entity, new InputStreamFactory() {
> -
> -            @Override
> -            public InputStream create(final InputStream instream)
> throws
> IOException {
> -                return new GZIPInputStream(instream);
> -            }
> -
> -        });
> +        super(entity, inputStreamFactory);
>      }
> 
>  }
> 
> and the same for other DecompressingEntity implementations.
> 
> Gary
> 

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