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1
52
53 package freemarker.ext.jython;
54
55 import java.util.Iterator  ;
56 import java.util.List ;
57
58 import org.python.core.Py;
59 import org.python.core.PyException;
60 import org.python.core.PyObject;
61
62 import freemarker.ext.util.ModelFactory;
63 import freemarker.ext.util.WrapperTemplateModel;
64 import freemarker.template.AdapterTemplateModel;
65 import freemarker.template.ObjectWrapper;
66 import freemarker.template.TemplateBooleanModel;
67 import freemarker.template.TemplateHashModel;
68 import freemarker.template.TemplateMethodModelEx;
69 import freemarker.template.TemplateModel;
70 import freemarker.template.TemplateModelException;
71 import freemarker.template.TemplateScalarModel;
72
73
78 public class JythonModel
79 implements TemplateBooleanModel, TemplateScalarModel, TemplateHashModel,
80 TemplateMethodModelEx, AdapterTemplateModel, WrapperTemplateModel
81 {
82 protected final PyObject object;
83 protected final JythonWrapper wrapper;
84
85 static final ModelFactory FACTORY =
86 new ModelFactory()
87 {
88 public TemplateModel create(Object object, ObjectWrapper wrapper)
89 {
90 return new JythonModel((PyObject)object, (JythonWrapper)wrapper);
91 }
92 };
93
94 public JythonModel(PyObject object, JythonWrapper wrapper)
95 {
96 this.object = object;
97 this.wrapper = wrapper;
98 }
99
100
103 public boolean getAsBoolean() throws TemplateModelException
104 {
105 try
106 {
107 return object.__nonzero__();
108 }
109 catch(PyException e)
110 {
111 throw new TemplateModelException(e);
112 }
113 }
114
115
118 public String getAsString() throws TemplateModelException
119 {
120 try
121 {
122 return object.toString();
123 }
124 catch(PyException e)
125 {
126 throw new TemplateModelException(e);
127 }
128 }
129
130
137 public TemplateModel get(String key)
138 throws
139 TemplateModelException
140 {
141 if(key != null)
142 {
143 key = key.intern();
144 }
145
146 PyObject obj = null;
147
148 try
149 {
150 if(wrapper.isAttributesShadowItems())
151 {
152 obj = object.__findattr__(key);
153 if(obj == null)
154 {
155 obj = object.__finditem__(key);
156 }
157 }
158 else
159 {
160 obj = object.__finditem__(key);
161 if(obj == null)
162 {
163 obj = object.__findattr__(key);
164 }
165 }
166 }
167 catch(PyException e)
168 {
169 throw new TemplateModelException(e);
170 }
171
172 return wrapper.wrap(obj);
173 }
174
175
178 public boolean isEmpty() throws TemplateModelException
179 {
180 try
181 {
182 return object.__len__() == 0;
183 }
184 catch(PyException e)
185 {
186 throw new TemplateModelException(e);
187 }
188 }
189
190
193 public Object exec(List arguments) throws TemplateModelException
194 {
195 int size = arguments.size();
196 try
197 {
198 switch(size)
199 {
200 case 0:
201 {
202 return wrapper.wrap(object.__call__());
203 }
204 case 1:
205 {
206 return wrapper.wrap(object.__call__(wrapper.unwrap(
207 (TemplateModel)arguments.get(0))));
208 }
209 default:
210 {
211 PyObject[] pyargs = new PyObject[size];
212 int i = 0;
213 for (Iterator arg = arguments.iterator(); arg.hasNext();)
214 {
215 pyargs[i++] = wrapper.unwrap(
216 (TemplateModel) arg.next());
217 }
218 return wrapper.wrap(object.__call__(pyargs));
219 }
220 }
221 }
222 catch(PyException e)
223 {
224 throw new TemplateModelException(e);
225 }
226 }
227
228 public Object getAdaptedObject(Class hint) {
229 if(object == null) {
230 return null;
231 }
232 Object view = object.__tojava__(hint);
233 if(view == Py.NoConversion) {
234 view = object.__tojava__(Object .class);
235 }
236 return view;
237 }
238
239 public Object getWrappedObject() {
240 return object == null ? null : object.__tojava__(Object .class);
241 }
242 }
243 |
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