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1
10
11 package com.triactive.jdo.store;
12
13 import com.triactive.jdo.PersistenceManager;
14 import java.math.BigInteger  ;
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 LongMapping extends ColumnMapping
23 {
24 private static final int LONG_MAX_DECIMAL_DIGITS = 19;
25
26 public LongMapping(DatabaseAdapter dba, Class type)
27 {
28 super(dba, type);
29
30 initTypeInfo();
31 }
32
33 public LongMapping(Column col)
34 {
35 super(col);
36
37 col.checkPrimitive();
38
39 initTypeInfo();
40 }
41
42 public LongMapping(ClassBaseTable table, int relativeFieldNumber)
43 {
44 this(table.newColumn(relativeFieldNumber));
45 }
46
47 protected TypeInfo getTypeInfo()
48 {
49 return dba.getTypeInfo(new int[] { Types.BIGINT, Types.DECIMAL });
50 }
51
52 protected void initTypeInfo()
53 {
54 super.initTypeInfo();
55
56
60 if (col != null && typeInfo.dataType == Types.DECIMAL)
61 {
62 col.setMinimumPrecision(Math.min(typeInfo.precision, LONG_MAX_DECIMAL_DIGITS));
63 col.checkDecimal();
64 }
65 }
66
67 public void setLong(PersistenceManager pm, PreparedStatement ps, int param, long value)
68 {
69 try
70 {
71 ps.setLong(param, value);
72 }
73 catch (SQLException e)
74 {
75 throw dba.newDataStoreException("Can't set long parameter: value = " + value, e);
76 }
77 }
78
79 public long getLong(PersistenceManager pm, ResultSet rs, int param)
80 {
81 long value;
82
83 try
84 {
85 value = rs.getLong(param);
86
87 if (rs.wasNull())
88 throw new NullValueException("Illegal null value in column " + col);
89 }
90 catch (SQLException e)
91 {
92 throw dba.newDataStoreException("Can't get long result: param = " + param, e);
93 }
94
95 return value;
96 }
97
98 public void setObject(PersistenceManager pm, PreparedStatement ps, int param, Object value)
99 {
100 try
101 {
102 if (value == null)
103 ps.setNull(param, typeInfo.dataType);
104 else
105 ps.setLong(param, ((Long )value).longValue());
106 }
107 catch (SQLException e)
108 {
109 throw dba.newDataStoreException("Can't set Long parameter: value = " + value, e);
110 }
111 }
112
113 public Object getObject(PersistenceManager pm, ResultSet rs, int param)
114 {
115 Object value;
116
117 try
118 {
119 long l = rs.getLong(param);
120 value = rs.wasNull() ? null : new Long (l);
121 }
122 catch (SQLException e)
123 {
124 throw dba.newDataStoreException("Can't get Long result: param = " + param, e);
125 }
126
127 return value;
128 }
129
130 public SQLExpression newSQLLiteral(QueryStatement qs, Object value)
131 {
132 return new IntegerLiteral(qs, BigInteger.valueOf(((Long )value).longValue()));
133 }
134
135 public SQLExpression newSQLExpression(QueryStatement qs, QueryStatement.QueryColumn qsc, String fieldName)
136 {
137 return new NumericExpression(qs, qsc);
138 }
139 }
140 |
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