org.apache.hc.client5.http.impl.cache

## Class HttpByteArrayCacheEntrySerializer

- java.lang.Object
- - org.apache.hc.client5.http.impl.cache.HttpByteArrayCacheEntrySerializer

- All Implemented Interfaces:
    HttpCacheEntrySerializer<byte[]>

      @Contract(threading=STATELESS)
      public class HttpByteArrayCacheEntrySerializer
      extends Object
      implements HttpCacheEntrySerializer<byte[]>

  This class implements the `HttpCacheEntrySerializer` interface, which defines the contract for HTTP cache entry serialization and deserialization. It also includes a default buffer size of 8192 bytes, which can be overridden by specifying a different buffer size in the constructor.
  Since:
    5.3

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static HttpByteArrayCacheEntrySerializer` | `INSTANCE` Singleton instance of this class.

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `HttpByteArrayCacheEntrySerializer()` Constructs a new instance of `HttpByteArrayCacheEntrySerializer` with a default buffer size.
    `HttpByteArrayCacheEntrySerializer(int bufferSize)` Constructs a HttpByteArrayCacheEntrySerializer with the specified buffer size.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `HttpCacheStorageEntry` | `deserialize(byte[] serializedObject)` Deserializes a byte array representation of an HTTP cache storage entry into an instance of `HttpCacheStorageEntry`.
    `protected InputStream` | `makeByteArrayInputStream(byte[] bytes)` Deprecated. Do not use.
    `protected org.apache.hc.core5.http.impl.io.AbstractMessageParser<org.apache.hc.core5.http.ClassicHttpResponse>` | `makeHttpResponseParser()` Deprecated. Do not use.
    `protected org.apache.hc.core5.http.impl.io.AbstractMessageWriter<SimpleHttpResponse>` | `makeHttpResponseWriter(org.apache.hc.core5.http.io.SessionOutputBuffer outputBuffer)` Deprecated. Do not use.
    `byte[]` | `serialize(HttpCacheStorageEntry storageEntry)` Serializes an HttpCacheStorageEntry object into a byte array using an HTTP-like format.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### INSTANCE

          public static final HttpByteArrayCacheEntrySerializer INSTANCE

      Singleton instance of this class.

  - ### Constructor Detail

    - #### HttpByteArrayCacheEntrySerializer

          public HttpByteArrayCacheEntrySerializer(int bufferSize)

      Constructs a HttpByteArrayCacheEntrySerializer with the specified buffer size.
      Parameters:
        `bufferSize` - the buffer size to use for serialization and deserialization.

    - #### HttpByteArrayCacheEntrySerializer

          public HttpByteArrayCacheEntrySerializer()

      Constructs a new instance of `HttpByteArrayCacheEntrySerializer` with a default buffer size.
      See Also:
        `DEFAULT_BUFFER_SIZE`

  - ### Method Detail

    - #### serialize

          public byte[] serialize(HttpCacheStorageEntry storageEntry)
                           throws ResourceIOException

      Serializes an HttpCacheStorageEntry object into a byte array using an HTTP-like format.

      The metadata is encoded into HTTP pseudo-headers for storage.

      Specified by:
        `serialize` in interface `HttpCacheEntrySerializer<byte[]>`
      Parameters:
        `storageEntry` - the HttpCacheStorageEntry to serialize.
      Returns:
        the byte array containing the serialized HttpCacheStorageEntry.
      Throws:
        `ResourceIOException` - if there is an error during serialization.

    - #### deserialize

          public HttpCacheStorageEntry deserialize(byte[] serializedObject)
                                            throws ResourceIOException

      Deserializes a byte array representation of an HTTP cache storage entry into an instance of `HttpCacheStorageEntry`.
      Specified by:
        `deserialize` in interface `HttpCacheEntrySerializer<byte[]>`
      Parameters:
        `serializedObject` - the byte array representation of the HTTP cache storage entry
      Returns:
        the deserialized HTTP cache storage entry
      Throws:
        `ResourceIOException` - if an error occurs during deserialization

    - #### makeByteArrayInputStream

          @Deprecated
          protected InputStream makeByteArrayInputStream(byte[] bytes)

      Deprecated. Do not use.
      Returns:
        null

    - #### makeHttpResponseParser

          @Deprecated
          protected org.apache.hc.core5.http.impl.io.AbstractMessageParser<org.apache.hc.core5.http.ClassicHttpResponse> makeHttpResponseParser()

      Deprecated. Do not use.
      Returns:
        null

    - #### makeHttpResponseWriter

          @Deprecated
          protected org.apache.hc.core5.http.impl.io.AbstractMessageWriter<SimpleHttpResponse> makeHttpResponseWriter(org.apache.hc.core5.http.io.SessionOutputBuffer outputBuffer)

      Deprecated. Do not use.
      Returns:
        null

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