Data operation code is all about adding a record, deleting a record, and getting a single record. It will also help in scanning the table and listing all records.
Let's see how we can build our own function to perform various tasks:
public void addOneRecordToTable(String tableObjName, String rowKey,
String colFamName, String columnName, String data) throws Exception
{
try
{
HTable tableObj = new HTable(configurationObj, tableObjName);
Put put = new Put(Bytes.toBytes(rowKey));
put.add(Bytes.toBytes(colFamName), Bytes.toBytes(columnName), Bytes
.toBytes(data));
tableObj.put(put);
}
catch (IOException exception)
{
exception.printStackTrace();
}
}
public void delRecordFromTable(String tableObjName, String rowKey) throws IOException
{
HTable tableObj = new HTable(configurationObj, tableObjName);
List<Delete>list = new ArrayList<Delete>();
Delete delObj = new Delete(rowKey.getBytes());
list.add(delObj);
tableObj.delete...