= Blob
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Represents a binary large object.

Conceptually you can consider it as a set of bytes (a picture, a video etc), though in fact it wraps three pieces of information:

* the set of bytes
* a name
* a mime type

== API

[source,java]
.Blob.java
----
class Blob {
  Blob(String name, String primaryType, String subtype, byte[] bytes)
  Blob(String name, String mimeTypeBase, byte[] bytes)
  Blob(String name, MimeType mimeType, byte[] bytes)
  Blob of(String name, CommonMimeType mimeType, byte[] content)     // <.>
  Try<Blob> tryRead(String name, CommonMimeType mimeType, DataSource dataSource)     // <.>
  Try<Blob> tryRead(String name, CommonMimeType mimeType, File file)     // <.>
  String getName()
  MimeType getMimeType()
  byte[] getBytes()
  Clob toClob(Charset charset)     // <.>
  void writeBytesTo(OutputStream os)     // <.>
  void writeTo(File file)     // <.>
  DataSource asDataSource()     // <.>
  Blob zip()     // <.>
  Blob zip(String zipEntryNameIfAny)     // <.>
  Blob unZip(CommonMimeType resultingMimeType)
  Try<HashUtils.Hash> tryHash(HashAlgorithm hashAlgorithm)
  Try<HashUtils.Hash> tryMd5()
  String md5Hex()
  boolean equals(Object o)
  int hashCode()
  String toString()
  Optional<BufferedImage> asImage()     // <.>
}
----

<.> xref:#of_String_CommonMimeType_byte[of(String, CommonMimeType, byte)]
+
--
Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] of given _name_ , _mimeType_ and _content_ .
--
<.> xref:#tryRead_String_CommonMimeType_DataSource[tryRead(String, CommonMimeType, DataSource)]
+
--
Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] of given _name_ , _mimeType_ and content from _dataSource_ , wrapped with a xref:refguide:commons:index/functional/Try.adoc[Try] .
--
<.> xref:#tryRead_String_CommonMimeType_File[tryRead(String, CommonMimeType, File)]
+
--
Shortcut for _tryRead(name, mimeType, DataSource.ofFile(file))_
--
<.> xref:#toClob_Charset[toClob(Charset)]
+
--
Converts to a xref:refguide:applib:index/value/Clob.adoc[Clob] , using given _Charset_ for the underlying byte[] to String conversion.
--
<.> xref:#writeBytesTo_OutputStream[writeBytesTo(OutputStream)]
+
--
Does not close the OutputStream.
--
<.> xref:#writeTo_File[writeTo(File)]
+
--
Writes this xref:refguide:applib:index/value/Blob.adoc[Blob] to the file represented by the specified `File` object.
--
<.> xref:#asDataSource_[asDataSource()]
+
--
Returns a new xref:refguide:commons:index/io/DataSource.adoc[DataSource] for underlying byte array.
--
<.> xref:#zip_[zip()]
+
--
Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] that has this Blob's underlying byte array zipped into a zip-entry using this Blob's name.
--
<.> xref:#zip_String[zip(String)]
+
--
Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] that has this Blob's underlying byte array zipped into a zip-entry with given zip-entry name.
--
<.> xref:#asImage_[asImage()]

== Members

[#of_String_CommonMimeType_byte]
=== of(String, CommonMimeType, byte)

Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] of given _name_ , _mimeType_ and _content_ .

_name_ may or may not include the desired filename extension, as it is guaranteed, that the resulting xref:refguide:applib:index/value/Blob.adoc[Blob] has the appropriate extension as constraint by the given _mimeType_ .

For more fine-grained control use one of the xref:refguide:applib:index/value/Blob.adoc[Blob] constructors directly.

[#tryRead_String_CommonMimeType_DataSource]
=== tryRead(String, CommonMimeType, DataSource)

Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] of given _name_ , _mimeType_ and content from _dataSource_ , wrapped with a xref:refguide:commons:index/functional/Try.adoc[Try] .

_name_ may or may not include the desired filename extension, as it is guaranteed, that the resulting xref:refguide:applib:index/value/Blob.adoc[Blob] has the appropriate extension as constraint by the given _mimeType_ .

For more fine-grained control use one of the xref:refguide:applib:index/value/Blob.adoc[Blob] factories directly.

[#tryRead_String_CommonMimeType_File]
=== tryRead(String, CommonMimeType, File)

Shortcut for _tryRead(name, mimeType, DataSource.ofFile(file))_

[#toClob_Charset]
=== toClob(Charset)

Converts to a xref:refguide:applib:index/value/Clob.adoc[Clob] , using given _Charset_ for the underlying byte[] to String conversion.

[#writeBytesTo_OutputStream]
=== writeBytesTo(OutputStream)

Does not close the OutputStream.

[#writeTo_File]
=== writeTo(File)

Writes this xref:refguide:applib:index/value/Blob.adoc[Blob] to the file represented by the specified `File` object.

If the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened for any other reason then a `FileNotFoundException` is thrown.

[#asDataSource_]
=== asDataSource()

Returns a new xref:refguide:commons:index/io/DataSource.adoc[DataSource] for underlying byte array.

[#zip_]
=== zip()

Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] that has this Blob's underlying byte array zipped into a zip-entry using this Blob's name.

[#zip_String]
=== zip(String)

Returns a new xref:refguide:applib:index/value/Blob.adoc[Blob] that has this Blob's underlying byte array zipped into a zip-entry with given zip-entry name.

[#asImage_]
=== asImage()

include::hooks/Blob_usage-notes.adoc[]
