Enumeration Context

The context for encoding a PCollection element. For example, for strings of utf8 characters or bytes, wholeStream encoding means that the string will be encoded as-is; while needsDelimiter encoding means that the string will be encoded prefixed with its length.

coder = new StrUtf8Coder()
w1 = new Writer()
coder.encode("my string", w, Context.wholeStream)
console.log(w1.finish())  // <= Prints the pure byte-encoding of the string
w2 = new Writer()
coder.encode("my string", w, Context.needsDelimiters)
console.log(w2.finish())  // <= Prints a length-prefix string of bytes

Enumeration Members

needsDelimiters wholeStream

Enumeration Members

needsDelimiters

needsDelimiters: "needsDelimiters"

Needs-delimiters encoding means that the encoding of data must be such that when decoding, the coder is able to stop decoding data at the end of the current element.

wholeStream

wholeStream: "wholeStream"

Whole stream encoding/decoding means that the encoding/decoding function does not need to worry about delimiting the start and end of the current element in the stream of bytes.

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