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1
10
11 package com.triactive.jdo.model;
12
13 import java.util.List  ;
14 import java.util.Set ;
15 import javax.jdo.JDOFatalInternalException;
16 import org.w3c.dom.Element ;
17
18
19 public class CollectionMetaData extends MetaData
20 {
21 protected final Class elementType;
22 protected final boolean embeddedElement;
23 protected final boolean clearOnDelete;
24
25 public CollectionMetaData(FieldMetaData fmd, Element elem)
26 {
27 super(fmd.getClassMetaData().getSourceURL(), elem);
28
29 String typeAttr = elem.getAttribute("element-type");
30 String embeddedAttr = elem.getAttribute("embedded-element");
31
32 elementType = getReferencedType(typeAttr, fmd.getClassMetaData());
33
34 if (embeddedAttr.length() > 0)
35 embeddedElement = Boolean.valueOf(embeddedAttr).booleanValue();
36 else
37 embeddedElement = Types.isDefaultEmbeddedType(elementType);
38
39 String codAttr = getVendorExtension(MY_VENDOR, "clear-on-delete");
40
41 clearOnDelete = codAttr == null ? true : Boolean.valueOf(codAttr).booleanValue();
42 }
43
44 public String getJavaName()
45 {
46 throw new JDOFatalInternalException("CollectionMetaData has no equivalent Java identifier");
47 }
48
49 public Class getElementType()
50 {
51 return elementType;
52 }
53
54 public boolean isEmbeddedElement()
55 {
56 return embeddedElement;
57 }
58
59 public ColumnOptions getElementColumnOptions()
60 {
61 return new ColumnOptions()
62 {
63 public String getLength()
64 {
65 return getVendorExtension(MY_VENDOR, "length");
66 }
67
68 public String getPrecision()
69 {
70 return getVendorExtension(MY_VENDOR, "precision");
71 }
72
73 public String getScale()
74 {
75 return getVendorExtension(MY_VENDOR, "scale");
76 }
77 };
78 }
79
80 public boolean isInverseCollection()
81 {
82 return getOwnerField() != null;
83 }
84
85 public boolean clearOnDelete()
86 {
87 return clearOnDelete;
88 }
89
90 public FieldMetaData getOwnerField()
91 {
92 String ownerFieldName = getVendorExtension(MY_VENDOR, "owner-field");
93
94 if (ownerFieldName == null)
95 ownerFieldName = getVendorExtension("sunw", "element-inverse");
96
97 return ownerFieldName == null ? null : FieldMetaData.forField(elementType, ownerFieldName);
98 }
99
100 void getReferencedClasses(final String vendorID, final List ordered, final Set referenced)
101 {
102 ClassMetaData cmd = ClassMetaData.forClass(elementType);
103
104 if (cmd != null)
105 cmd.getReferencedClasses(vendorID, ordered, referenced);
106 }
107 }
108 |
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