创建的数据库存储如下数据
表结构
java代码
public class HbaseTest {
/**
* 配置ss
*/
static Configuration config = null;
private Connection connection = null;
private Table table = null;
@Before
public void init() throws Exception {
config = HBaseConfiguration.create();
config.set("hbase.zookeeper.quorum", "192.168.33.61");
config.set("hbase.zookeeper.property.clientPort", "2181");
connection = ConnectionFactory.createConnection(config);
table = connection.getTable(TableName.valueOf("dept"));
}
/**
* 创建数据库表dept，并增加列族info和subdept
*
* @throws Exception
*/
@Test
public void createTable() throws Exception {
HBaseAdmin admin = new HBaseAdmin(config);
TableName tableName = TableName.valueOf("dept");
HTableDescriptor desc = new HTableDescriptor(tableName);
HColumnDescriptor family = new HColumnDescriptor("info");
desc.addFamily(family);
HColumnDescriptor family2 = new HColumnDescriptor("subdept");
desc.addFamily(family2);
admin.createTable(desc);
System.out.println("创建表成功！");
}
/**
* 向hbase中插入前三行网络部、开发部、测试部的相关数据，
* 即加入表中的前三条数据
*
* @throws Exception
*/
@SuppressWarnings({ "deprecation", "resource" })
@Test
public void insertData() throws Exception {
table.setAutoFlushTo(false);
table.setWriteBufferSize(534534534);
ArrayList<Put> arrayList = new ArrayList<Put>();
Put put = new Put(Bytes.toBytes("0_1"));
put.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("网络部"));
put.add(Bytes.toBytes("subdept"), Bytes.toBytes("subdept1"), Bytes.toBytes("1_1"));
put.add(Bytes.toBytes("subdept"), Bytes.toBytes("subdept2"), Bytes.toBytes("1_2"));
arrayList.add(put);
Put put1 = new Put(Bytes.toBytes("1_1"));
put1.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("开发部"));
put1.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("0_1"));
Put put2 = new Put(Bytes.toBytes("1_2"));
put2.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("测试部"));
put2.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("0_1"));
for (int i = 1; i <= 100; i++) {
put1.add(Bytes.toBytes("subdept"), Bytes.toBytes("subdept"+i), Bytes.toBytes("2_"+i));
put2.add(Bytes.toBytes("subdept"), Bytes.toBytes("subdept"+i), Bytes.toBytes("3_"+i));
}
arrayList.add(put1);
arrayList.add(put2);
table.put(arrayList);
table.flushCommits();
System.out.println("数据插入成功！");
}
/**
* 向hbase中插入开发部、测试部下的所有子部门数据
* @throws Exception
*/
@Test
public void insertOtherData() throws Exception {
table.setAutoFlushTo(false);
table.setWriteBufferSize(534534534);
ArrayList<Put> arrayList = new ArrayList<Put>();
for (int i = 1; i <= 100; i++) {
Put put_development = new Put(Bytes.toBytes("2_"+i));
put_development.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("开发"+i+"组"));
put_development.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("1_1"));
arrayList.add(put_development);
Put put_test = new Put(Bytes.toBytes("3_"+i));
put_test.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("测试"+i+"组"));
put_test.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("1_2"));
arrayList.add(put_test);
}
table.put(arrayList);
table.flushCommits();
System.out.println("插入其他数据成功！");
}
/**
* 查询所有一级部门(没有上级部门的部门)
* @throws Exception
*/
@Test
public void scanDataStep1() throws Exception {
Scan scan = new Scan();
System.out.println("查询到的所有一级部门如下：");
ResultScanner scanner = table.getScanner(scan);
for (Result result : scanner) {
if (result.getValue(Bytes.toBytes("info"), Bytes.toBytes("f_pid")) == null) {
for (KeyValue kv : result.raw()) {
System.out.print(new String(kv.getRow()) + " ");
System.out.print(new String(kv.getFamily()) + ":");
System.out.print(new String(kv.getQualifier()) + " = ");
System.out.print(new String(kv.getValue()));
System.out.print(" timestamp = " + kv.getTimestamp() + "\n");
}
}
}
}
/**
* 已知rowkey，查询该部门的所有(直接)子部门信息 rowkey=1_1
* @throws Exception
*/
@Test
public void scanDataStep2() throws Exception {
Get g = new Get("1_1".getBytes());
g.addFamily("subdept".getBytes());
Result result = table.get(g);
for (KeyValue kv : result.raw()) {
Get g1 = new Get(kv.getValue());
Result result1 = table.get(g1);
for (KeyValue kv1 : result1.raw()) {
System.out.print(new String(kv1.getRow()) + " ");
System.out.print(new String(kv1.getFamily()) + ":");
System.out.print(new String(kv1.getQualifier()) + " = ");
System.out.print(new String(kv1.getValue()));
System.out.print(" timestamp = " + kv1.getTimestamp() + "\n");
}
}
}
/**
* 已知rowkey，向该部门增加一个子部门
* rowkey:0_1
* 增加的部门名：我增加的部门
* @throws Exception
*/
@Test
public void scanDataStep3() throws Exception {
Put put = new Put(Bytes.toBytes("4_1"));
put.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("我增加的部门"));
put.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("0_1"));
table.put(put);
table.flushCommits();
Put put1 = new Put(Bytes.toBytes("0_1"));
put1.add(Bytes.toBytes("subdept"), Bytes.toBytes("subdept3"), Bytes.toBytes("4_1"));
table.put(put1);
table.flushCommits();
}
/**
* 已知rowkey（且该部门存在子部门），删除该部门信息，该部门所有(直接)子部门被调整到其他部门中
* @throws Exception
*/
@Test
public void scanDataStep4() throws Exception {
/**
* 向部门"我增加的部门"添加两个子部门"
*/
table.setAutoFlushTo(false);
table.setWriteBufferSize(534534534);
ArrayList<Put> arrayList = new ArrayList<Put>();
Put put1 = new Put(Bytes.toBytes("5_1"));
put1.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("新增子部门1"));
put1.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("4_1"));
Put put2 = new Put(Bytes.toBytes("5_2"));
put2.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("新增子部门2"));
put2.add(Bytes.toBytes("info"), Bytes.toBytes("f_pid"), Bytes.toBytes("4_1"));
arrayList.add(put1);
arrayList.add(put2);
table.put(arrayList);
table.flushCommits();
/**
* 目的：删除"我增加的部门"的部门信息，该部门所有(直接)子部门被调整到其他部门中
* 使用策略：更新部门名就可以了，也就是说一个部门可能有多个rowkey
*/
Put put = new Put(Bytes.toBytes("4_1"));
put.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("开发部"));
table.put(put);
table.flushCommits();
}
@After
public void close() throws Exception {
table.close();
connection.close();
}
}