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1
52
53 package freemarker.ext.beans;
54
55 import java.lang.reflect.Array  ;
56
57 import freemarker.ext.util.ModelFactory;
58 import freemarker.template.ObjectWrapper;
59 import freemarker.template.TemplateCollectionModel;
60 import freemarker.template.TemplateModel;
61 import freemarker.template.TemplateModelException;
62 import freemarker.template.TemplateModelIterator;
63 import freemarker.template.TemplateSequenceModel;
64
65
72 public class ArrayModel
73 extends
74 BeanModel
75 implements
76 TemplateCollectionModel,
77 TemplateSequenceModel
78 {
79 static final ModelFactory FACTORY =
80 new ModelFactory()
81 {
82 public TemplateModel create(Object object, ObjectWrapper wrapper)
83 {
84 return new ArrayModel(object, (BeansWrapper)wrapper);
85 }
86 };
87
88 private int length;
90
91
100 public ArrayModel(Object array, BeansWrapper wrapper)
101 {
102 super(array, wrapper);
103 Class clazz = array.getClass();
104 if(!clazz.isArray())
105 throw new IllegalArgumentException ("Object is not an array, it is " + array.getClass().getName());
106 length = Array.getLength(array);
107 }
108
109
110 public TemplateModelIterator iterator()
111 {
112 return new Iterator();
113 }
114
115 public TemplateModel get(int index)
116 throws
117 TemplateModelException
118 {
119 try
120 {
121 return wrap(Array.get(object, index));
122 }
123 catch(IndexOutOfBoundsException e)
124 {
125 throw new TemplateModelException("Index out of bounds: " + index);
126 }
127 }
128
129 private class Iterator
130 implements
131 TemplateSequenceModel,
132 TemplateModelIterator
133 {
134 private int position = 0;
135
136 public boolean hasNext()
137 {
138 return position < length;
139 }
140
141 public TemplateModel get(int index)
142 throws
143 TemplateModelException
144 {
145 return ArrayModel.this.get(index);
146 }
147
148 public TemplateModel next()
149 throws
150 TemplateModelException
151 {
152 return position < length ? get(position++) : null;
153 }
154
155 public int size()
156 {
157 return ArrayModel.this.size();
158 }
159 }
160
161 public int size()
162 {
163 return length;
164 }
165
166 public boolean isEmpty() {
167 return length == 0;
168 }
169 }
170 |
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