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21 package org.apache.hadoop.hbase.hbql.mapping;
22
23 import org.apache.hadoop.hbase.client.Result;
24 import org.apache.hadoop.hbase.hbql.client.HBqlException;
25 import org.apache.hadoop.hbase.hbql.impl.HConnectionImpl;
26 import org.apache.hadoop.hbase.hbql.statement.select.SelectElement;
27
28 import java.io.Serializable;
29 import java.util.List;
30
31 public abstract class ResultAccessor implements Serializable {
32
33 private static final long serialVersionUID = 1L;
34
35 private MappingContext mappingContext;
36
37 public ResultAccessor() {
38 }
39
40 public ResultAccessor(final MappingContext mappingContext) {
41 this.mappingContext = mappingContext;
42 this.getMappingContext().setResultAccessor(this);
43 }
44
45 public MappingContext getMappingContext() {
46 return this.mappingContext;
47 }
48
49 public Mapping getMapping() {
50 return this.getMappingContext().getMapping();
51 }
52
53 public TableMapping getTableMapping() throws HBqlException {
54 return (TableMapping)this.getMapping();
55 }
56
57 public abstract Object newObject(final HConnectionImpl conn,
58 final MappingContext mappingContext,
59 final List<SelectElement> selectElementList,
60 final int maxVersions,
61 final Result result) throws HBqlException;
62
63 public ColumnAttrib getKeyAttrib() throws HBqlException {
64 return this.getMapping().getKeyAttrib();
65 }
66
67 public abstract ColumnAttrib getColumnAttribByQualifiedName(String familyName,
68 String columnName) throws HBqlException;
69
70 public abstract ColumnAttrib getColumnAttribByName(String name) throws HBqlException;
71
72 public ColumnAttrib getVersionAttrib(String familyName, String columnName) throws HBqlException {
73 return this.getVersionAttrib(familyName + ":" + columnName);
74 }
75
76 public abstract ColumnAttrib getVersionAttrib(String name) throws HBqlException;
77 }