|
1
10
11 package com.triactive.jdo.store;
12
13 import com.triactive.jdo.PersistenceManager;
14 import java.sql.PreparedStatement  ;
15 import java.sql.ResultSet ;
16 import java.sql.SQLException ;
17 import java.sql.Types ;
18 import javax.jdo.JDODataStoreException;
19
20
21 public class OIDMapping extends ColumnMapping
22 {
23 private static final int LONG_MAX_DECIMAL_DIGITS = 19;
24
25 public OIDMapping(DatabaseAdapter dba, Class type)
26 {
27 super(dba, type);
28
29 initTypeInfo();
30 }
31
32 public OIDMapping(Column col)
33 {
34 super(col);
35
36 col.checkPrimitive();
37
38 initTypeInfo();
39 }
40
41 public OIDMapping(ClassBaseTable table, int relativeFieldNumber)
42 {
43 this(table.newColumn(relativeFieldNumber));
44 }
45
46 protected TypeInfo getTypeInfo()
47 {
48 return dba.getTypeInfo(new int[] { Types.BIGINT, Types.DECIMAL });
49 }
50
51 protected void initTypeInfo()
52 {
53 super.initTypeInfo();
54
55
59 if (col != null && typeInfo.dataType == Types.DECIMAL)
60 {
61 col.setMinimumPrecision(Math.min(typeInfo.precision, LONG_MAX_DECIMAL_DIGITS));
62 col.checkDecimal();
63 }
64 }
65
66 public void setObject(PersistenceManager pm, PreparedStatement ps, int param, Object value)
67 {
68 try
69 {
70 if (value == null)
71 ps.setNull(param, typeInfo.dataType);
72 else
73 ps.setLong(param, ((OID)value).longValue());
74 }
75 catch (SQLException e)
76 {
77 throw dba.newDataStoreException("Can't set OID parameter: value = " + value, e);
78 }
79 }
80
81 public Object getObject(PersistenceManager pm, ResultSet rs, int param)
82 {
83 Object value;
84
85 try
86 {
87 long l = rs.getLong(param);
88 value = rs.wasNull() ? null : new OID(l);
89 }
90 catch (SQLException e)
91 {
92 throw dba.newDataStoreException("Can't get OID result: param = " + param, e);
93 }
94
95 return value;
96 }
97
98 public SQLExpression newSQLLiteral(QueryStatement qs, Object value)
99 {
100 return new ObjectLiteral(qs, this, value);
101 }
102
103 public SQLExpression newSQLExpression(QueryStatement qs, QueryStatement.QueryColumn qsc, String fieldName)
104 {
105 return new ObjectExpression(qs, qsc);
106 }
107 }
108 |
Popular Tags |
Java API By Example, From Geeks To Geeks.