software.amazon.awssdk.core

Class BytesWrapper

java.lang.Object

software.amazon.awssdk.core.BytesWrapper

Direct Known Subclasses:

ResponseBytes, SdkBytes

public abstract class BytesWrapper
extends Object

A base class for SdkBytes and ResponseBytes that enables retrieving an underlying byte array as multiple different types, like a byte buffer (via asByteBuffer(), or a string (via asUtf8String().

Method Summary

Modifier and Type	Method and Description
byte[]	asByteArray()
byte[]	asByteArrayUnsafe()
ByteBuffer	asByteBuffer()
ContentStreamProvider	asContentStreamProvider()
InputStream	asInputStream()
String	asString(Charset charset) Retrieve the output as a string.
String	asUtf8String()
boolean	equals(Object o)
int	hashCode()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

asByteBuffer

public final ByteBuffer asByteBuffer()

Returns:

The output as a read-only byte buffer.

asByteArray

public final byte[] asByteArray()

Returns:

A copy of the output as a byte array.

See Also:

to prevent creating an additional array copy.

asByteArrayUnsafe

public final byte[] asByteArrayUnsafe()

Returns:

The output as a byte array. This does not create a copy of the underlying byte array. This introduces concurrency risks, allowing: (1) the caller to modify the byte array stored in this object implementation AND (2) the original creator of this object, if they created it using the unsafe method.

Consider using asByteBuffer(), which is a safer method to avoid an additional array copy because it does not provide a way to modify the underlying buffer. As the method name implies, this is unsafe. If you're not sure, don't use this. The only guarantees given to the user of this method is that the SDK itself won't modify the underlying byte array.

See Also:

to prevent creating an additional array copy safely.

asString

public final String asString(Charset charset)
                      throws UncheckedIOException

Retrieve the output as a string.

Parameters:

charset - The charset of the string.

Returns:

The output as a string.

Throws:

UncheckedIOException - with a CharacterCodingException as the cause if the bytes cannot be encoded using the provided charset

asUtf8String

public final String asUtf8String()
                          throws UncheckedIOException

Returns:

The output as a utf-8 encoded string.

Throws:

UncheckedIOException - with a CharacterCodingException as the cause if the bytes cannot be encoded as UTF-8.

asInputStream

public final InputStream asInputStream()

Returns:

The output as an input stream. This stream will not need to be closed.

asContentStreamProvider

public final ContentStreamProvider asContentStreamProvider()

Returns:

The output as a ContentStreamProvider.

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object