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1
8
9 package com.sleepycat.persist.impl;
10
11 import java.io.Serializable  ;
12 import java.lang.reflect.Field ;
13 import java.lang.reflect.Modifier ;
14 import java.util.ArrayList ;
15 import java.util.List ;
16 import java.util.Map ;
17
18 import com.sleepycat.persist.raw.RawField;
19
20
25 class FieldInfo implements RawField, Serializable , Comparable <FieldInfo> {
26
27 private static final long serialVersionUID = 2062721100372306296L;
28
29
33 static List <FieldInfo> getInstanceFields(Class cls) {
34 Field [] declaredFields = cls.getDeclaredFields();
35 List <FieldInfo> fields =
36 new ArrayList <FieldInfo>(declaredFields.length);
37 for (Field field : declaredFields) {
38 int mods = field.getModifiers();
39 if (!Modifier.isTransient(mods) && !Modifier.isStatic(mods)) {
40 fields.add(new FieldInfo(field));
41 }
42 }
43 return fields;
44 }
45
46 static FieldInfo getField(List <FieldInfo> fields, String fieldName) {
47 int i = getFieldIndex(fields, fieldName);
48 if (i >= 0) {
49 return fields.get(i);
50 } else {
51 return null;
52 }
53 }
54
55 static int getFieldIndex(List <FieldInfo> fields, String fieldName) {
56 for (int i = 0; i < fields.size(); i += 1) {
57 FieldInfo field = fields.get(i);
58 if (fieldName.equals(field.getName())) {
59 return i;
60 }
61 }
62 return -1;
63 }
64
65 private String name;
66 private String className;
67 private Format format;
68 private transient Class cls;
69
70 private FieldInfo(Field field) {
71 name = field.getName();
72 cls = field.getType();
73 className = cls.getName();
74 }
75
76 void collectRelatedFormats(Catalog catalog,
77 Map <String ,Format> newFormats) {
78 format = catalog.createFormat(cls, newFormats);
79 }
80
81 void migrateFromBeta(Map <String ,Format> formatMap) {
82 if (format == null) {
83 format = formatMap.get(className);
84 if (format == null) {
85 throw new IllegalStateException (className);
86 }
87 }
88 }
89
90 void initialize(Catalog catalog) {
91 }
92
93 Class getFieldClass() {
94 if (cls == null) {
95 try {
96 cls = SimpleCatalog.classForName(className);
97 } catch (ClassNotFoundException e) {
98 throw new IllegalStateException (e);
99 }
100 }
101 return cls;
102 }
103
104 String getClassName() {
105 return className;
106 }
107
108 public String getName() {
109 return name;
110 }
111
112 public Format getType() {
113 return format;
114 }
115
116 public int compareTo(FieldInfo o) {
117 return name.compareTo(o.name);
118 }
119
120 @Override
121 public boolean equals(Object other) {
122 if (other instanceof FieldInfo) {
123 FieldInfo o = (FieldInfo) other;
124 return name.equals(o.name);
125 } else {
126 return false;
127 }
128 }
129
130 @Override
131 public int hashCode() {
132 return name.hashCode();
133 }
134
135 @Override
136 public String toString() {
137 return "[Field name: " + name + " class: " + className + ']';
138 }
139 }
140 |
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