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package javax.faces.component; |
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import org.apache.commons.logging.Log; |
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import org.apache.commons.logging.LogFactory; |
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import javax.faces.FacesException; |
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import javax.faces.context.FacesContext; |
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import javax.el.ExpressionFactory; |
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import java.io.InputStream; |
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import java.io.IOException; |
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import java.lang.reflect.Array; |
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import java.util.*; |
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final class _ClassUtils |
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{ |
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|
42 | 0 | private static final Log log = LogFactory.getLog(_ClassUtils.class); |
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|
44 | 0 | public static final Class BOOLEAN_ARRAY_CLASS = boolean[].class; |
45 | 0 | public static final Class BYTE_ARRAY_CLASS = byte[].class; |
46 | 0 | public static final Class CHAR_ARRAY_CLASS = char[].class; |
47 | 0 | public static final Class SHORT_ARRAY_CLASS = short[].class; |
48 | 0 | public static final Class INT_ARRAY_CLASS = int[].class; |
49 | 0 | public static final Class LONG_ARRAY_CLASS = long[].class; |
50 | 0 | public static final Class FLOAT_ARRAY_CLASS = float[].class; |
51 | 0 | public static final Class DOUBLE_ARRAY_CLASS = double[].class; |
52 | 0 | public static final Class OBJECT_ARRAY_CLASS = Object[].class; |
53 | 0 | public static final Class BOOLEAN_OBJECT_ARRAY_CLASS = Boolean[].class; |
54 | 0 | public static final Class BYTE_OBJECT_ARRAY_CLASS = Byte[].class; |
55 | 0 | public static final Class CHARACTER_OBJECT_ARRAY_CLASS = Character[].class; |
56 | 0 | public static final Class SHORT_OBJECT_ARRAY_CLASS = Short[].class; |
57 | 0 | public static final Class INTEGER_OBJECT_ARRAY_CLASS = Integer[].class; |
58 | 0 | public static final Class LONG_OBJECT_ARRAY_CLASS = Long[].class; |
59 | 0 | public static final Class FLOAT_OBJECT_ARRAY_CLASS = Float[].class; |
60 | 0 | public static final Class DOUBLE_OBJECT_ARRAY_CLASS = Double[].class; |
61 | 0 | public static final Class STRING_OBJECT_ARRAY_CLASS = String[].class; |
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|
63 | 0 | public static final Map COMMON_TYPES = new HashMap(64); |
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static |
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{ |
66 | 0 | COMMON_TYPES.put("byte", Byte.TYPE); |
67 | 0 | COMMON_TYPES.put("char", Character.TYPE); |
68 | 0 | COMMON_TYPES.put("double", Double.TYPE); |
69 | 0 | COMMON_TYPES.put("float", Float.TYPE); |
70 | 0 | COMMON_TYPES.put("int", Integer.TYPE); |
71 | 0 | COMMON_TYPES.put("long", Long.TYPE); |
72 | 0 | COMMON_TYPES.put("short", Short.TYPE); |
73 | 0 | COMMON_TYPES.put("boolean", Boolean.TYPE); |
74 | 0 | COMMON_TYPES.put("void", Void.TYPE); |
75 | 0 | COMMON_TYPES.put("java.lang.Object", Object.class); |
76 | 0 | COMMON_TYPES.put("java.lang.Boolean", Boolean.class); |
77 | 0 | COMMON_TYPES.put("java.lang.Byte", Byte.class); |
78 | 0 | COMMON_TYPES.put("java.lang.Character", Character.class); |
79 | 0 | COMMON_TYPES.put("java.lang.Short", Short.class); |
80 | 0 | COMMON_TYPES.put("java.lang.Integer", Integer.class); |
81 | 0 | COMMON_TYPES.put("java.lang.Long", Long.class); |
82 | 0 | COMMON_TYPES.put("java.lang.Float", Float.class); |
83 | 0 | COMMON_TYPES.put("java.lang.Double", Double.class); |
84 | 0 | COMMON_TYPES.put("java.lang.String", String.class); |
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|
86 | 0 | COMMON_TYPES.put("byte[]", BYTE_ARRAY_CLASS); |
87 | 0 | COMMON_TYPES.put("char[]", CHAR_ARRAY_CLASS); |
88 | 0 | COMMON_TYPES.put("double[]", DOUBLE_ARRAY_CLASS); |
89 | 0 | COMMON_TYPES.put("float[]", FLOAT_ARRAY_CLASS); |
90 | 0 | COMMON_TYPES.put("int[]", INT_ARRAY_CLASS); |
91 | 0 | COMMON_TYPES.put("long[]", LONG_ARRAY_CLASS); |
92 | 0 | COMMON_TYPES.put("short[]", SHORT_ARRAY_CLASS); |
93 | 0 | COMMON_TYPES.put("boolean[]", BOOLEAN_ARRAY_CLASS); |
94 | 0 | COMMON_TYPES.put("java.lang.Object[]", OBJECT_ARRAY_CLASS); |
95 | 0 | COMMON_TYPES.put("java.lang.Boolean[]", BOOLEAN_OBJECT_ARRAY_CLASS); |
96 | 0 | COMMON_TYPES.put("java.lang.Byte[]", BYTE_OBJECT_ARRAY_CLASS); |
97 | 0 | COMMON_TYPES.put("java.lang.Character[]", CHARACTER_OBJECT_ARRAY_CLASS); |
98 | 0 | COMMON_TYPES.put("java.lang.Short[]", SHORT_OBJECT_ARRAY_CLASS); |
99 | 0 | COMMON_TYPES.put("java.lang.Integer[]", INTEGER_OBJECT_ARRAY_CLASS); |
100 | 0 | COMMON_TYPES.put("java.lang.Long[]", LONG_OBJECT_ARRAY_CLASS); |
101 | 0 | COMMON_TYPES.put("java.lang.Float[]", FLOAT_OBJECT_ARRAY_CLASS); |
102 | 0 | COMMON_TYPES.put("java.lang.Double[]", DOUBLE_OBJECT_ARRAY_CLASS); |
103 | 0 | COMMON_TYPES.put("java.lang.String[]", STRING_OBJECT_ARRAY_CLASS); |
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105 | 0 | } |
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private _ClassUtils() |
109 | 0 | { |
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111 | 0 | } |
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public static Class classForName(String type) |
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throws ClassNotFoundException |
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{ |
128 | 0 | if (type == null) throw new NullPointerException("type"); |
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try |
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{ |
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|
132 | 0 | return Class.forName(type, |
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false, |
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Thread.currentThread().getContextClassLoader()); |
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} |
136 | 0 | catch (ClassNotFoundException ignore) |
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{ |
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|
139 | 0 | return Class.forName(type, |
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false, |
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_ClassUtils.class.getClassLoader()); |
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} |
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} |
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public static Class simpleClassForName(String type) |
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{ |
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try |
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{ |
158 | 0 | return classForName(type); |
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} |
160 | 0 | catch (ClassNotFoundException e) |
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{ |
162 | 0 | log.error("Class " + type + " not found", e); |
163 | 0 | throw new FacesException(e); |
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} |
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} |
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public static Class javaTypeToClass(String type) |
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throws ClassNotFoundException |
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{ |
181 | 0 | if (type == null) throw new NullPointerException("type"); |
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|
184 | 0 | Class clazz = (Class) COMMON_TYPES.get(type); |
185 | 0 | if (clazz != null) |
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{ |
187 | 0 | return clazz; |
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} |
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|
190 | 0 | int len = type.length(); |
191 | 0 | if (len > 2 && type.charAt(len - 1) == ']' && type.charAt(len - 2) == '[') |
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{ |
193 | 0 | String componentType = type.substring(0, len - 2); |
194 | 0 | Class componentTypeClass = classForName(componentType); |
195 | 0 | return Array.newInstance(componentTypeClass, 0).getClass(); |
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} |
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198 | 0 | return classForName(type); |
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} |
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public static Class simpleJavaTypeToClass(String type) |
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{ |
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try |
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{ |
215 | 0 | return javaTypeToClass(type); |
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} |
217 | 0 | catch (ClassNotFoundException e) |
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{ |
219 | 0 | log.error("Class " + type + " not found", e); |
220 | 0 | throw new FacesException(e); |
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} |
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} |
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public static InputStream getResourceAsStream(String resource) |
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{ |
226 | 0 | InputStream stream = Thread.currentThread().getContextClassLoader() |
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.getResourceAsStream(resource); |
228 | 0 | if (stream == null) |
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{ |
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|
231 | 0 | stream = _ClassUtils.class.getClassLoader().getResourceAsStream(resource); |
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} |
233 | 0 | return stream; |
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} |
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public static Iterator getResources(String resource, Object defaultObject) |
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{ |
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try |
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{ |
245 | 0 | Enumeration resources = getCurrentLoader(defaultObject).getResources(resource); |
246 | 0 | List lst = new ArrayList(); |
247 | 0 | while (resources.hasMoreElements()) |
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{ |
249 | 0 | lst.add(resources.nextElement()); |
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} |
251 | 0 | return lst.iterator(); |
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} |
253 | 0 | catch (IOException e) |
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{ |
255 | 0 | log.error(e.getMessage(), e); |
256 | 0 | throw new FacesException(e); |
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} |
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} |
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public static Object newInstance(String type) |
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throws FacesException |
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{ |
264 | 0 | if (type == null) return null; |
265 | 0 | return newInstance(simpleClassForName(type)); |
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} |
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public static Object newInstance(String type, Class expectedType) throws FacesException |
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{ |
270 | 0 | return newInstance(type, expectedType == null ? null : new Class[] {expectedType}); |
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} |
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public static Object newInstance(String type, Class[] expectedTypes) |
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{ |
275 | 0 | if (type == null) |
276 | 0 | return null; |
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|
278 | 0 | Class clazzForName = simpleClassForName(type); |
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|
280 | 0 | if(expectedTypes != null) |
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{ |
282 | 0 | for (int i = 0, size = expectedTypes.length; i < size; i++) |
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{ |
284 | 0 | if (!expectedTypes[i].isAssignableFrom(clazzForName)) |
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{ |
286 | 0 | throw new FacesException("'" + type + "' does not implement expected type '" + expectedTypes[i] |
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+ "'"); |
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} |
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} |
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} |
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292 | 0 | return newInstance(clazzForName); |
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} |
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public static Object newInstance(Class clazz) |
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throws FacesException |
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{ |
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try |
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{ |
300 | 0 | return clazz.newInstance(); |
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} |
302 | 0 | catch(NoClassDefFoundError e) |
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{ |
304 | 0 | log.error("Class : "+clazz.getName()+" not found.",e); |
305 | 0 | throw new FacesException(e); |
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} |
307 | 0 | catch (InstantiationException e) |
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{ |
309 | 0 | log.error(e.getMessage(), e); |
310 | 0 | throw new FacesException(e); |
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} |
312 | 0 | catch (IllegalAccessException e) |
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{ |
314 | 0 | log.error(e.getMessage(), e); |
315 | 0 | throw new FacesException(e); |
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} |
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} |
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public static Object convertToType(Object value, Class desiredClass) |
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{ |
321 | 0 | if (value == null) return null; |
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try |
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{ |
325 | 0 | ExpressionFactory expFactory = FacesContext.getCurrentInstance().getApplication().getExpressionFactory(); |
326 | 0 | return expFactory.coerceToType(value, desiredClass); |
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} |
328 | 0 | catch (Exception e) |
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{ |
330 | 0 | String message = "Cannot coerce " + value.getClass().getName() |
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+ " to " + desiredClass.getName(); |
332 | 0 | log.error(message, e); |
333 | 0 | throw new FacesException(message, e); |
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} |
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} |
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protected static ClassLoader getCurrentLoader(Object defaultObject) |
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{ |
346 | 0 | ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
347 | 0 | if(loader == null) |
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{ |
349 | 0 | loader = defaultObject.getClass().getClassLoader(); |
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} |
351 | 0 | return loader; |
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} |
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} |