@Override
      public void read(org.apache.thrift.protocol.TProtocol prot, checkAndMutate_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TTupleProtocol iprot = (org.apache.thrift.protocol.TTupleProtocol) prot;
        struct.table = iprot.readBinary();
        struct.setTableIsSet(true);
        struct.row = iprot.readBinary();
        struct.setRowIsSet(true);
        struct.family = iprot.readBinary();
        struct.setFamilyIsSet(true);
        struct.qualifier = iprot.readBinary();
        struct.setQualifierIsSet(true);
        struct.compareOperator = org.apache.hadoop.hbase.thrift2.generated.TCompareOperator.findByValue(iprot.readI32());
        struct.setCompareOperatorIsSet(true);
        struct.rowMutations = new TRowMutations();
        struct.rowMutations.read(iprot);
        struct.setRowMutationsIsSet(true);
        java.util.BitSet incoming = iprot.readBitSet(1);
        if (incoming.get(0)) {
          struct.value = iprot.readBinary();
          struct.setValueIsSet(true);
        }
      }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/THBaseService.java