HBase Client API Example -2_hadoop

package example;
Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.HColumnDescriptor;
Import Org.apache.hadoop.hbase.HTableDescriptor;
Import Org.apache.hadoop.hbase.client.HBaseAdmin;
Import org.apache.hadoop.hbase.client.HTable;
Import org.apache.hadoop.hbase.util.Bytes;

Import Org.apache.hadoop.hbase.util.Pair; Administrator public class Advancedcreatetableexample {public static void Printregion (String tablename) throws Excepti
		on{System.out.println ("tablename:" +tablename);
		Configuration conf=hbaseconfiguration.create ();
		Htable table=new htable (conf,tablename);
		Pair<byte[][],byte[][]> Pair=table.getstartendkeys ();
		Byte[][]firsts=pair.getfirst (); for (int i=0;i<firsts.length;i++) {if (firsts[i].length==8) {System.out.println (Bytes.tolong (firsts[i)) + "-------
			-"+bytes.tolong" (Pair.getsecond () [i])); }else{System.out.println (Bytes.tostringbinary (firsts[i)) + "--------" +bytes.toStringbinary (Pair.getsecond () [i])); }}/** * @param args */public static void main (string[] args) throws exception{Configuration Conf=hbas
		Econfiguration.create ();
		Hbaseadmin admin=new hbaseadmin (conf);
		Htabledescriptor tabdesc=new Htabledescriptor (bytes.tobytes ("test13"));
		Hcolumndescriptor coldesc=new hcolumndescriptor ("fam1");
		Tabdesc.addfamily (COLDESC);
		Admin.createtable (Tabdesc,bytes.tobytes (1L), Bytes.tobytes (100L), 10);
		Printregion ("test13");
		Htabledescriptor tabdesc2=new Htabledescriptor (bytes.tobytes ("test14"));
		Hcolumndescriptor coldesc2=new hcolumndescriptor ("fam1");
		Tabdesc2.addfamily (COLDESC2); byte [][]spilit=new byte[][]{bytes.tobytes ("A"), Bytes.tobytes ("B"), Bytes.tobytes ("C"), Bytes.tobytes ("D
		")
		};
		Admin.createtable (TABDESC2, spilit);

	Printregion ("test14");
 }

}

package example;

Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.HColumnDescriptor;
Import Org.apache.hadoop.hbase.HTableDescriptor;
Import Org.apache.hadoop.hbase.client.HBaseAdmin;

Administrator public
class Createtableexample {

	/**
	 * @param args
	/public static void main ( String[] args) throws exception{
		Configuration conf=hbaseconfiguration.create ();
		Hbaseadmin admin=new hbaseadmin (conf);
		Htabledescriptor tabledesc=new htabledescriptor ("test2");
		Hcolumndescriptor coldesc=new hcolumndescriptor ("col1");
		Tabledesc.addfamily (COLDESC);
		Admin.createtable (TABLEDESC);
		System.out.println (admin.istableavailable ("test2"));
	}

package example;
Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;

Import Org.apache.hadoop.hbase.client.HBaseAdmin; Administrator public class Ddeexample {/** * @param args */public static void main (string[] args) throws Except
		ion{Configuration conf=hbaseconfiguration.create ();
		Hbaseadmin admin=new hbaseadmin (conf);
		System.out.println ("Available:" +admin.istableavailable ("Test9"));
		System.out.println ("Enalbe:" +admin.istableenabled ("Test9"));
		SYSTEM.OUT.PRINTLN ("Disable:" +admin.istabledisabled ("Test9"));
		System.out.println ("------------");
		Admin.disabletable ("Test9");
		System.out.println ("Available:" +admin.istableavailable ("Test9"));
		System.out.println ("Enalbe:" +admin.istableenabled ("Test9"));
		SYSTEM.OUT.PRINTLN ("Disable:" +admin.istabledisabled ("Test9"));
		System.out.println ("------------");
		Admin.deletetable ("Test9");
		System.out.println ("Available:" +admin.istableavailable ("Test9")); System.out.println("------------");

	System.out.println ("exist:" +admin.tableexists ("Test9"));
 }

}

package example;
Import java.util.ArrayList;

Import java.util.List;
Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.KeyValue;
Import org.apache.hadoop.hbase.client.HTable;
Import Org.apache.hadoop.hbase.client.Result;
Import Org.apache.hadoop.hbase.client.ResultScanner;
Import Org.apache.hadoop.hbase.client.Scan;
Import Org.apache.hadoop.hbase.filter.BinaryComparator;
Import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
Import Org.apache.hadoop.hbase.filter.Filter;
Import org.apache.hadoop.hbase.filter.FilterList;
Import Org.apache.hadoop.hbase.filter.FilterList.Operator;
Import Org.apache.hadoop.hbase.filter.QualifierFilter;
Import Org.apache.hadoop.hbase.filter.RowFilter;
Import Org.apache.hadoop.hbase.filter.SubstringComparator;
Import Org.apache.hadoop.hbase.filter.ValueFilter;

Import org.apache.hadoop.hbase.util.Bytes;
	 Administrator public class Filterlistexample {/** * @param args*/public static void main (string[] args) throws exception{Configuration conf=hbaseconfiguration.create ();
		Htable table=new htable (conf, "testtable");
		List<filter> filterlist=new arraylist<filter> ();
		Filter rowfilter=new RowFilter (compareop.equal, New Substringcomparator ("6"));
		Filterlist.add (RowFilter);
		Filter columnfilter=new Qualifierfilter (compareop.not_equal, New Substringcomparator ("6"));
		Filterlist.add (Columnfilter);
		Filter valuefilter=new Valuefilter (compareop.less, New Binarycomparator) (Bytes.tobytes ("Value8"));
		Filterlist.add (Valuefilter);
		FilterList filters=new filterlist (filterlist);
		Scan scan=new Scan ();
		Scan.setfilter (filters);
		Resultscanner Resultscanner=table.getscanner (scan); For [result Result:resultscanner] {for (keyvalue Kv:result.raw ()) {System.out.println (kv+ "--------" +bytes.tostring (k
			V.getvalue ()));
		} resultscanner.close ();
		System.out.println ("------------"); filters=new filterlist (Operator.must_pass_one, filterlist);
		 Scan.setfilter (filters);
		Resultscanner=table.getscanner (scan); For [result Result:resultscanner] {for (keyvalue Kv:result.raw ()) {System.out.println (kv+ "--------" +bytes.tostring (k
			V.getvalue ()));

	} resultscanner.close ();
 }

}

package example;

Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import org.apache.hadoop.hbase.client.HTable;
Import org.apache.hadoop.hbase.util.Bytes;

Administrator public
class Incrementexample {

	/**
	 * @param args
	/public static void main ( String[] args) throws exception{
		Configuration conf=hbaseconfiguration.create ();
		Htable table=new htable (conf, "testtable");
		Long L=table.incrementcolumnvalue (Bytes.tobytes ("Row9"), Bytes.tobytes ("Family1"), Bytes.tobytes ("Inc"), 1);
		System.out.println (l);
		 L=table.incrementcolumnvalue (Bytes.tobytes ("Row9"), Bytes.tobytes ("Family1"), Bytes.tobytes ("Inc"), 0);
		System.out.println (l);
		L=table.incrementcolumnvalue (Bytes.tobytes ("Row9"), Bytes.tobytes ("Family1"), Bytes.tobytes ("Inc"),-1);
		System.out.println (l);

	}

}

package example;

Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.HTableDescriptor;
Import Org.apache.hadoop.hbase.client.HBaseAdmin;
Import org.apache.hadoop.hbase.util.Bytes;

Administrator public
class Listtableexample {

	/**
	 * @param args
	/public static void main ( String[] args) throws Exception {
		Configuration conf=hbaseconfiguration.create ();
		Hbaseadmin admin=new hbaseadmin (conf);
		Htabledescriptor[] Desclist=admin.listtables ();
		for (Htabledescriptor desc:desclist) {
			System.out.println (bytes.tostring (Desc.getname ()));
		}
		Htabledescriptor Desc=admin.gettabledescriptor (bytes.tobytes ("testtable"));
		System.out.println (Bytes.tostring (Desc.getname ()));
	}

package example;
Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.HColumnDescriptor;
Import Org.apache.hadoop.hbase.HTableDescriptor;
Import Org.apache.hadoop.hbase.client.HBaseAdmin;

Import org.apache.hadoop.hbase.util.Bytes;  Administrator public class Modifytableexample {/** * @param args */public static void main (string[] args) throws
		Exception {Configuration conf=hbaseconfiguration.create ();
		Hbaseadmin admin=new hbaseadmin (conf);
		Htabledescriptor desc=new htabledescriptor ("Modify");
		Hcolumndescriptor coldesc=new hcolumndescriptor ("fam1");
		Desc.addfamily (COLDESC);
		Admin.createtable (DESC);
		Htabledescriptor Desc2=admin.gettabledescriptor (bytes.tobytes ("Modify"));
		Hcolumndescriptor coldesc2=new hcolumndescriptor ("Fami2");
		Desc2.addfamily (COLDESC2);
		Admin.disabletable ("Modify");
		Admin.modifytable ("Modify", DESC2);
		Admin.enabletable ("Modify"); Htabledescriptor Desc3=admin.Gettabledescriptor (Bytes.tobytes ("Modify"));
		System.out.println ("is Equal:" +desc2.equals (DESC3));
	System.out.println (DESC3);
 }

}

package example;

Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.HColumnDescriptor;
Import Org.apache.hadoop.hbase.client.HBaseAdmin;
Import org.apache.hadoop.hbase.util.Bytes;

Administrator public
class ModifyTableExample2 {

	/**
	 * @param args
	/public static void main ( String[] args) throws Exception {
		Configuration conf=hbaseconfiguration.create ();
		Hbaseadmin admin=new hbaseadmin (conf);
		Admin.enabletable ("Test8");
		Admin.disabletable ("Test8");
		Admin.deletecolumn ("Test8", "fam1");
		Admin.enabletable ("Test8");
		System.out.println (Admin.gettabledescriptor) (Bytes.tobytes ("Test8"));
		Admin.disabletable ("Test8");
		Admin.addcolumn ("Test8", New Hcolumndescriptor ("fam1"));
		System.out.println (Admin.gettabledescriptor (Bytes.tobytes ("Test8")));

	}

package example;
Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.KeyValue;
Import org.apache.hadoop.hbase.client.HTable;
Import org.apache.hadoop.hbase.client.Increment;
Import Org.apache.hadoop.hbase.client.Result;

Import org.apache.hadoop.hbase.util.Bytes; Administrator public class Multiincrementexample {/** * @param args */public static void main (string[] args) thr
		oWS Exception {Configuration conf=hbaseconfiguration.create ();
		Htable table=new htable (conf, "testtable");
		Increment increment=new Increment (bytes.tobytes ("Row9"));
		Increment.addcolumn (Bytes.tobytes ("Family1"), Bytes.tobytes ("Inc"), 0);
		Increment.addcolumn (Bytes.tobytes ("Family1"), Bytes.tobytes ("Inc1"),-1);
		
		Increment.addcolumn (Bytes.tobytes ("Family1"), Bytes.tobytes ("Inc2"), 2);
		Result Result=table.increment (increment); For (KeyValue Kv:result.raw ()) {System.out.println (kv+ "-----" +bytes.tolong (Kv.getvalue ()));
		}

	}

}
 

package example;

Import org.apache.hadoop.conf.Configuration;
Import org.apache.hadoop.hbase.HBaseConfiguration;
Import Org.apache.hadoop.hbase.client.HTableInterface;
Import Org.apache.hadoop.hbase.client.HTablePool;

Administrator public
class Tablepoolexample {

	/**
	 * @param args
	/public static void main ( String[] args) throws exception{
		Configuration conf=hbaseconfiguration.create ();
		Htablepool pool=new Htablepool (conf,5);
		Htableinterface [] inter=new htableinterface[10];
		for (int i=0;i<inter.length;i++) {
			inter[i]=pool.gettable ("TestTable");
		}
		for (int i=0;i<inter.length;i++) {
			pool.puttable (inter[i]);
		}
		
		Pool.closetablepool ("TestTable");

	}