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1
21 package com.db4o.reflect.core;
22
23 import java.lang.reflect.Array  ;
24
25 import com.db4o.reflect.*;
26
27
30 public abstract class AbstractReflectArray implements ReflectArray {
31
32 protected final Reflector _reflector;
33
34 public AbstractReflectArray(Reflector reflector) {
35 _reflector = reflector;
36 }
37
38 public abstract Object newInstance(ReflectClass componentType, int[] dimensions);
39
40 public abstract Object newInstance(ReflectClass componentType, int length);
41
42 public int[] dimensions(Object arr) {
43 int count = 0;
44 ReflectClass claxx = _reflector.forObject(arr);
45 while (claxx.isArray()) {
46 count++;
47 claxx = claxx.getComponentType();
48 }
49 int dim[] = new int[count];
50 for (int i = 0; i < count; i++) {
51 try {
52 dim[i] = getLength(arr);
53 arr = get(arr, 0);
54 } catch (Exception e) {
55 return dim;
56 }
57 }
58 return dim;
59 }
60
61 public int flatten(Object a_shaped, int[] a_dimensions, int a_currentDimension, Object [] a_flat,
62 int a_flatElement) {
63 if (a_currentDimension == (a_dimensions.length - 1)) {
64 for (int i = 0; i < a_dimensions[a_currentDimension]; i++) {
65 a_flat[a_flatElement++] = getNoExceptions(a_shaped, i);
66 }
67 } else {
68 for (int i = 0; i < a_dimensions[a_currentDimension]; i++) {
69 a_flatElement =
70 flatten(
71 getNoExceptions(a_shaped, i),
72 a_dimensions,
73 a_currentDimension + 1,
74 a_flat,
75 a_flatElement);
76 }
77 }
78 return a_flatElement;
79 }
80
81 public Object get(Object onArray, int index) {
82 return Array.get(onArray, index);
83 }
84
85 public ReflectClass getComponentType(ReflectClass a_class) {
86 while (a_class.isArray()) {
87 a_class = a_class.getComponentType();
88 }
89 return a_class;
90 }
91
92 public int getLength(Object array) {
93 return Array.getLength(array);
94 }
95
96 private final Object getNoExceptions(Object onArray, int index) {
97 try {
98 return get(onArray, index);
99 } catch (Exception e) {
100 return null;
101 }
102 }
103
104 public boolean isNDimensional(ReflectClass a_class) {
105 return a_class.getComponentType().isArray();
106 }
107
108 public void set(Object onArray, int index, Object element) {
109 if(element == null){
110 try{
111 Array.set(onArray, index, element);
112 }catch(Exception e){
113 }
117
118 }else{
119 Array.set(onArray, index, element);
120 }
121 }
122
123 public int shape(Object [] a_flat, int a_flatElement, Object a_shaped, int[] a_dimensions,
124 int a_currentDimension) {
125 if (a_currentDimension == (a_dimensions.length - 1)) {
126 for (int i = 0; i < a_dimensions[a_currentDimension]; i++) {
127 set(a_shaped, i, a_flat[a_flatElement++]);
128 }
129 } else {
130 for (int i = 0; i < a_dimensions[a_currentDimension]; i++) {
131 a_flatElement =
132 shape(
133 a_flat,
134 a_flatElement,
135 get(a_shaped, i),
136 a_dimensions,
137 a_currentDimension + 1);
138 }
139 }
140 return a_flatElement;
141 }
142
143 }
144 |
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