Thank you Gary..! Now i understood the actual method. On Wed, Apr 25, 2012 at 11:36 AM, Gary Helmling <ghelml...@gmail.com> wrote:
> Hi Vamshi, > > See the ConstraintProcessor coprocessor that was added for just this > kind of case: > http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/constraint/package-summary.html > > You would need to implement the Constraint interface and apply the > configuration to your tables via the Constraints utility. > > Assuming the fields are being handled as strings on the client end, > your Constraint implementation could simply call Bytes.toString() and > apply some basic regexs for validation. Or you could consider using a > more structured serialization format like protobufs. > > --gh > > On Tue, Apr 24, 2012 at 9:35 PM, Vamshi Krishna <vamshi2...@gmail.com> > wrote: > > Hi all , here i am having one basic doubt about constraints on hbase > > table, after knowing there is no concept of data types in hbase and > > everything is stored in the bytes. > > Suppose a table in hbase has 3 columns,(under same column family) > > 1st column is 'Name' which accepts only character strings not numbers and > > special symbols. > > 2nd column 'phoneNumber', which is numerals that too exactly 10 digits, > and > > 3rd column 'city' which should accept only upper case character strings. > If > > such is the situation, how to enforce the constraints on each of the > > columns of hbase table? > > > > Also Can anybody please tell how to write the equivalent query in hbase > > shell and Java to do so? > > -- > > *Regards* > > * > > Vamshi Krishna > > * > -- *Regards* * Vamshi Krishna *
