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1
10
11 package com.triactive.jdo.store;
12
13 import com.triactive.jdo.model.FieldMetaData;
14 import com.triactive.jdo.model.MapMetaData;
15 import javax.jdo.JDOUserException;
16
17
18 public class MapTable extends FieldTable
19 {
20 private ColumnMapping ownerMapping;
21 private ColumnMapping keyMapping;
22 private ColumnMapping valueMapping;
23
24
25 protected MapTable(TableMetadata tmd, FieldMetaData fmd, StoreManager storeMgr)
26 {
27 super(tmd, fmd, storeMgr);
28 }
29
30
31 public void initialize()
32 {
33 assertIsUninitialized();
34
35 MapMetaData mmd = fmd.getMapMetaData();
36 if (mmd == null)
37 throw new JDOUserException("No map metadata found in " + fmd);
38
39 Class  keyType = mmd.getKeyType();
40 Class valueType = mmd.getValueType();
41
42 SQLIdentifier ownerColumnName = getBaseColumnNameForType(ownerType);
43 SQLIdentifier keyColumnName = getBaseColumnNameForType(keyType);
44 SQLIdentifier valueColumnName = getBaseColumnNameForType(valueType);
45
46 Column ownerColumn = newColumn(ownerType, ownerColumnName, Role.OWNER).setPrimaryKeyPart();
47 Column keyColumn = newColumn(keyType, keyColumnName, Role.KEY).setPrimaryKeyPart();
48 Column valueColumn = newColumn(valueType, valueColumnName, Role.VALUE);
49
50 keyColumn.setOptions(mmd.getKeyColumnOptions());
51 valueColumn.setOptions(mmd.getValueColumnOptions());
52
53 if (mmd.allowsNullValues())
54 valueColumn.setNullable();
55
56 ownerMapping = dba.getMapping(ownerColumn);
57 keyMapping = dba.getMapping(keyColumn);
58 valueMapping = dba.getMapping(valueColumn);
59
60 state = TABLE_STATE_INITIALIZED;
61 }
62
63
64 public ColumnMapping getOwnerMapping()
65 {
66 assertIsInitialized();
67
68 return ownerMapping;
69 }
70
71
72 public ColumnMapping getKeyMapping()
73 {
74 assertIsInitialized();
75
76 return keyMapping;
77 }
78
79
80 public ColumnMapping getValueMapping()
81 {
82 assertIsInitialized();
83
84 return valueMapping;
85 }
86 }
87 |
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