use o.a.c.marshal.*Type for CQL 
--------------------------------

                 Key: CASSANDRA-2262
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2262
             Project: Cassandra
          Issue Type: Sub-task
          Components: API
    Affects Versions: 0.8
            Reporter: Eric Evans
            Priority: Minor
             Fix For: 0.8
         Attachments: v0-0001-test-shows-no-roundtrip-in-BytesType.txt

Presently, {{o.a.c.cql.Term.getByteBuffer}} manage's the conversion from a 
parsed term to a {{ByteBuffer}} of the right contents, this should be moved 
into the individual {{AbstractType}} subclasses (aka 
{{AbstractType.fromString}}).

Additionally, a method that does the inverse (returning the string equivalent), 
needs to exists such that {{AbstractType.getString(AbstractType.fromString(s)) 
== s}}

Finally, for use in results decoding a method should exist that given a 
{{ByteBuffer}} will return the appropriate object for that type.  For example, 
{{IntegerType.compose(ByteBuffer) -> java.math.BigInteger}}, or 
{{LexicalUUIDType.compose(ByteBuffer) -> java.util.UUID}}.

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