- All Implemented Interfaces:
- Value, JackrabbitValue
public class BinaryValueImpl
- extends BinaryValue
- implements JackrabbitValue
Represents a binary value that is backed by a blob file value.
public String getContentIdentity()
- Get a unique identifier of the content of this value. Usually this is a
message digest of the content (a cryptographically secure one-way hash).
This allows to avoid processing large binary values multiple times.
This method returns null if the identifier is unknown. The identifier may
not always be available, for example if the value has not yet been saved
or processed. Once an identifier is available, it will never change
because values are immutable.
If two values have the same identifier, the content of the value is
guaranteed to be the same. However it is not guaranteed that two values
with the same content will return the same identifier.
The identifier is opaque, meaning it can have any format and size, however
it is at normally about 50 characters and at most 255 characters long.
The string only contains Unicode code points from 32 to 127 (including).
- Specified by:
getContentIdentity in interface
- the unique identifier or null
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