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21 package org.apache.hadoop.hbase.hbql.statement;
22
23 import org.apache.hadoop.hbase.HColumnDescriptor;
24 import org.apache.hadoop.hbase.client.HBaseAdmin;
25 import org.apache.hadoop.hbase.hbql.client.HBqlException;
26 import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
27 import org.apache.hadoop.hbase.hbql.mapping.FamilyDefinition;
28
29 import java.io.IOException;
30
31 public class AddFamilyAction implements AlterTableAction {
32 private final FamilyDefinition familyDefinition;
33
34 public AddFamilyAction(final FamilyDefinition familyDefinition) {
35 this.familyDefinition = familyDefinition;
36 }
37
38 private FamilyDefinition getFamilyDefinition() {
39 return this.familyDefinition;
40 }
41
42 public void execute(final HConnectionImpl conn,
43 final HBaseAdmin admin,
44 final String tableName) throws HBqlException {
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46 final HColumnDescriptor columnDescriptor = this.getFamilyDefinition().getColumnDescription();
47
48 try {
49 admin.addColumn(tableName, columnDescriptor);
50 }
51 catch (IOException e) {
52 throw new HBqlException(e);
53 }
54 }
55 }