hbase client api 例子-2

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;//Administratorpublic class AdvancedCreateTableExample {public static void printRegion(String tableName)throws Exception{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=HBaseConfiguration.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;//Administratorpublic 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;//Administratorpublic class DDEExample {/** * @param args */public static void main(String[] args) throws Exception{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;//Administratorpublic 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(kv.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(kv.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;//Administratorpublic 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;//Administratorpublic 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;//Administratorpublic 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;//Administratorpublic 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;//Administratorpublic class MultiIncrementExample {/** * @param args */public static void main(String[] args)throws 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;//Administratorpublic 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");}}