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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 CharacterMapping extends ColumnMapping
22 {
23 public CharacterMapping(DatabaseAdapter dba, Class type)
24 {
25 super(dba, type);
26
27 initTypeInfo();
28 }
29
30 public CharacterMapping(Column col)
31 {
32 super(col);
33
34 col.setFixedLength(1);
35 col.checkString();
36
37 initTypeInfo();
38 }
39
40 public CharacterMapping(ClassBaseTable table, int relativeFieldNumber)
41 {
42 this(table.newColumn(relativeFieldNumber));
43 }
44
45 protected TypeInfo getTypeInfo()
46 {
47 return dba.getTypeInfo(Types.CHAR);
48 }
49
50 public void setChar(PersistenceManager pm, PreparedStatement ps, int param, char value)
51 {
52 try
53 {
54 ps.setString(param, new Character (value).toString());
55 }
56 catch (SQLException e)
57 {
58 throw dba.newDataStoreException("Can't set char parameter: value = " + value, e);
59 }
60 }
61
62 public char getChar(PersistenceManager pm, ResultSet rs, int param)
63 {
64 char value;
65
66 try
67 {
68 String s = rs.getString(param);
69
70 if (rs.wasNull())
71 throw new NullValueException("Illegal null value in column " + col);
72
73 value = s.length() == 0 ? '\000' : s.charAt(0);
74 }
75 catch (SQLException e)
76 {
77 throw dba.newDataStoreException("Can't get char result: param = " + param, e);
78 }
79
80 return value;
81 }
82
83 public void setObject(PersistenceManager pm, PreparedStatement ps, int param, Object value)
84 {
85 try
86 {
87 if (value == null)
88 ps.setNull(param, typeInfo.dataType);
89 else
90 ps.setString(param, ((Character )value).toString());
91 }
92 catch (SQLException e)
93 {
94 throw dba.newDataStoreException("Can't set Character parameter: value = " + value, e);
95 }
96 }
97
98 public Object getObject(PersistenceManager pm, ResultSet rs, int param)
99 {
100 Object value;
101
102 try
103 {
104 String s = rs.getString(param);
105 value = rs.wasNull() ? null : new Character (s.length() == 0 ? '\000' : s.charAt(0));
106 }
107 catch (SQLException e)
108 {
109 throw dba.newDataStoreException("Can't get Character result: param = " + param, e);
110 }
111
112 return value;
113 }
114
115 public SQLExpression newSQLLiteral(QueryStatement qs, Object value)
116 {
117 return new CharacterLiteral(qs, ((Character )value).toString());
118 }
119
120 public SQLExpression newSQLExpression(QueryStatement qs, QueryStatement.QueryColumn qsc, String fieldName)
121 {
122 return new CharacterExpression(qs, qsc);
123 }
124 }
125 |
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