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1
10
11 package com.triactive.jdo.store;
12
13 import com.triactive.jdo.PersistenceManager;
14 import java.math.BigDecimal  ;
15 import java.sql.PreparedStatement ;
16 import java.sql.ResultSet ;
17 import java.sql.SQLException ;
18 import java.sql.Types ;
19 import javax.jdo.JDODataStoreException;
20
21
22 public class FloatMapping extends ColumnMapping
23 {
24 public FloatMapping(DatabaseAdapter dba, Class type)
25 {
26 super(dba, type);
27
28 initTypeInfo();
29 }
30
31 public FloatMapping(Column col)
32 {
33 super(col);
34
35 col.checkPrimitive();
36
37 initTypeInfo();
38 }
39
40 public FloatMapping(ClassBaseTable table, int relativeFieldNumber)
41 {
42 this(table.newColumn(relativeFieldNumber));
43 }
44
45 protected TypeInfo getTypeInfo()
46 {
47 return dba.getTypeInfo(new int[] { Types.REAL, Types.FLOAT });
48 }
49
50 public void setFloat(PersistenceManager pm, PreparedStatement ps, int param, float value)
51 {
52 try
53 {
54 ps.setFloat(param, value);
55 }
56 catch (SQLException e)
57 {
58 throw dba.newDataStoreException("Can't set float parameter: value = " + value, e);
59 }
60 }
61
62 public float getFloat(PersistenceManager pm, ResultSet rs, int param)
63 {
64 float value;
65
66 try
67 {
68 value = rs.getFloat(param);
69
70 if (rs.wasNull())
71 throw new NullValueException("Illegal null value in column " + col);
72 }
73 catch (SQLException e)
74 {
75 throw dba.newDataStoreException("Can't get float result: param = " + param, e);
76 }
77
78 return value;
79 }
80
81 public void setObject(PersistenceManager pm, PreparedStatement ps, int param, Object value)
82 {
83 try
84 {
85 if (value == null)
86 ps.setNull(param, typeInfo.dataType);
87 else
88 ps.setFloat(param, ((Float )value).floatValue());
89 }
90 catch (SQLException e)
91 {
92 throw dba.newDataStoreException("Can't set Float parameter: value = " + value, e);
93 }
94 }
95
96 public Object getObject(PersistenceManager pm, ResultSet rs, int param)
97 {
98 Object value;
99
100 try
101 {
102 float f = rs.getFloat(param);
103 value = rs.wasNull() ? null : new Float (f);
104 }
105 catch (SQLException e)
106 {
107 throw dba.newDataStoreException("Can't get Float result: param = " + param, e);
108 }
109
110 return value;
111 }
112
113 public SQLExpression newSQLLiteral(QueryStatement qs, Object value)
114 {
115 return new FloatingPointLiteral(qs, (Float )value);
116 }
117
118 public SQLExpression newSQLExpression(QueryStatement qs, QueryStatement.QueryColumn qsc, String fieldName)
119 {
120 return new NumericExpression(qs, qsc);
121 }
122 }
123 |
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