How to use

check

method

in

org.apache.hadoop.hbase.constraint.Constraint

@Override
public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put,
  WALEdit edit, Durability durability) throws IOException {
 // check the put against the stored constraints
 for (Constraint c : constraints) {
  c.check(put);
 }
 // if we made it here, then the Put is valid
}

 @Override
 public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put,
   WALEdit edit, boolean writeToWAL) throws IOException {
  // check the put against the stored constraints
  for (Constraint c : constraints) {
   c.check(put);
  }
  // if we made it here, then the Put is valid
 }
}

 @Override
 public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put,
   WALEdit edit, Durability durability) throws IOException {
  // check the put against the stored constraints
  for (Constraint c : constraints) {
   c.check(put);
  }
  // if we made it here, then the Put is valid
 }
}