List of usage examples for java.lang Class getMethod
@CallerSensitive public Method getMethod(String name, Class<?>... parameterTypes) throws NoSuchMethodException, SecurityException
From source file:com.bosscs.spark.commons.utils.Utils.java
/** * Resolves the setter name for the property whose name is 'propertyName' whose type is 'valueType' * in the entity bean whose class is 'entityClass'. * If we don't find a setter following Java's naming conventions, before throwing an exception we try to * resolve the setter following Scala's naming conventions. * * @param propertyName the field name of the property whose setter we want to resolve. * @param entityClass the bean class object in which we want to search for the setter. * @param valueType the class type of the object that we want to pass to the setter. * @return the resolved setter.//from w w w . j av a2 s .c o m */ @SuppressWarnings("unchecked") public static Method findSetter(String propertyName, Class entityClass, Class valueType) { Method setter; String setterName = "set" + propertyName.substring(0, 1).toUpperCase() + propertyName.substring(1); try { setter = entityClass.getMethod(setterName, valueType); } catch (NoSuchMethodException e) { // let's try with scala setter name try { setter = entityClass.getMethod(propertyName + "_$eq", valueType); } catch (NoSuchMethodException e1) { throw new HadoopIOException(e1); } } return setter; }
From source file:com.stratio.deep.commons.utils.Utils.java
/** * Resolves the setter name for the property whose name is 'propertyName' whose type is 'valueType' * in the entity bean whose class is 'entityClass'. * If we don't find a setter following Java's naming conventions, before throwing an exception we try to * resolve the setter following Scala's naming conventions. * * @param propertyName the field name of the property whose setter we want to resolve. * @param entityClass the bean class object in which we want to search for the setter. * @param valueType the class type of the object that we want to pass to the setter. * @return the resolved setter.// w w w.j a va 2 s . co m */ @SuppressWarnings("unchecked") public static Method findSetter(String propertyName, Class entityClass, Class valueType) { Method setter; String setterName = "set" + propertyName.substring(0, 1).toUpperCase() + propertyName.substring(1); try { setter = entityClass.getMethod(setterName, valueType); } catch (NoSuchMethodException e) { // let's try with scala setter name try { setter = entityClass.getMethod(propertyName + "_$eq", valueType); } catch (NoSuchMethodException e1) { throw new DeepIOException(e1); } } return setter; }
From source file:AWTUtilities.java
/** * Attempts to determine the usable screen bounds of the default screen * device. If the require java.awt API is not available under the JVM we're * running in, this will simply return the screen bounds obtained via * <code>Toolkit.getScreenSize()</code>. *//*w w w .j a v a2 s. c o m*/ public static Rectangle getUsableScreenBounds() { if (PlatformUtils.isJavaBetterThan("1.4")) { try { Class graphicsEnvironmentClass = Class.forName("java.awt.GraphicsEnvironment"); Class graphicsDeviceClass = Class.forName("java.awt.GraphicsDevice"); Class graphicsConfigurationClass = Class.forName("java.awt.GraphicsConfiguration"); Class[] emptyClassArr = new Class[0]; Method getLocalGraphicsEnvironmentMethod = graphicsEnvironmentClass .getMethod("getLocalGraphicsEnvironment", emptyClassArr); Method getDefaultScreenDeviceMethod = graphicsEnvironmentClass.getMethod("getDefaultScreenDevice", emptyClassArr); Method getDefaultConfigurationMethod = graphicsDeviceClass.getMethod("getDefaultConfiguration", emptyClassArr); Method getBoundsMethod = graphicsConfigurationClass.getMethod("getBounds", emptyClassArr); Method getScreenInsetsMethod = Toolkit.class.getMethod("getScreenInsets", new Class[] { graphicsConfigurationClass }); Object[] emptyObjArr = new Object[0]; Object graphicsEnvironment = getLocalGraphicsEnvironmentMethod.invoke(null, emptyObjArr); Object defaultScreenDevice = getDefaultScreenDeviceMethod.invoke(graphicsEnvironment, emptyObjArr); Object defaultConfiguration = getDefaultConfigurationMethod.invoke(defaultScreenDevice, emptyObjArr); Rectangle bounds = (Rectangle) getBoundsMethod.invoke(defaultConfiguration, emptyObjArr); Insets insets = (Insets) getScreenInsetsMethod.invoke(Toolkit.getDefaultToolkit(), new Object[] { defaultConfiguration }); bounds.x += insets.left; bounds.y += insets.top; bounds.width -= insets.left + insets.right; bounds.height -= insets.top + insets.bottom; return bounds; } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (NoSuchMethodException e) { e.printStackTrace(); } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } catch (InvocationTargetException e) { e.printStackTrace(); } } return new Rectangle(new Point(0, 0), Toolkit.getDefaultToolkit().getScreenSize()); }
From source file:com.aurel.track.persist.ReflectionHelper.java
/** * This method replaces all occurrences of <code>ProjectType</code> * value oldOID with project type value newOID going through all related * tables in the database.//from w w w. ja v a 2 s .c o m * @param oldOID object identifier of list type to be replaced * @param newOID object identifier of replacement list type */ public static boolean hasDependentData(Class[] peerClasses, String[] fields, List<Integer> oldOIDs) { // Do this using reflection. if (oldOIDs == null || oldOIDs.isEmpty()) { return false; } Criteria selectCriteria; for (int i = 0; i < peerClasses.length; ++i) { Class peerClass = peerClasses[i]; String field = fields[i]; List<int[]> chunkList = GeneralUtils.getListOfChunks(oldOIDs); Iterator<int[]> iterator = chunkList.iterator(); while (iterator.hasNext()) { int[] oIDsChunk = iterator.next(); selectCriteria = new Criteria(); selectCriteria.addIn(field, oIDsChunk); try { Class partypes[] = new Class[1]; partypes[0] = Criteria.class; Method meth = peerClass.getMethod("doSelect", partypes); Object arglist[] = new Object[1]; arglist[0] = selectCriteria; List results = (List) meth.invoke(peerClass, arglist); if (results != null && !results.isEmpty()) { return true; } } catch (Exception e) { LOGGER.error("Exception when trying to find dependent data for " + "oldOIDs " + oldOIDs.size() + " for class " + peerClass.toString() + " and field " + field + ": " + e.getMessage()); LOGGER.debug(ExceptionUtils.getStackTrace(e)); } } } return false; }
From source file:com.softmotions.commons.bean.BeanUtils.java
/** * Gets a property from the given bean.// w ww .j a va 2 s .c o m * * @param clazz The class to determine the property type for. * @param propertyName The name of the property to read. * @param lenient If true is passed for this attribute, null will returned for * in case no matching getter method is defined, else an Exception will be throw * in this case. * @return The determined value. * @throws BeanException In case the bean access failed. */ public static Class getPropertyType(Class clazz, String propertyName, boolean lenient) throws BeanException { try { // getting property object from bean using "getNnnn", where nnnn is parameter name Method getterMethod = null; try { // first trying form getPropertyNaae for regular value String getterName = "get" + Character.toUpperCase(propertyName.charAt(0)) + propertyName.substring(1); getterMethod = clazz.getMethod(getterName, GETTER_ARG_TYPES); } catch (NoSuchMethodException ex) { // next trying isPropertyNaae for possible boolean String getterName = "is" + Character.toUpperCase(propertyName.charAt(0)) + propertyName.substring(1); getterMethod = clazz.getMethod(getterName, GETTER_ARG_TYPES); } return getterMethod.getReturnType(); } catch (NoSuchMethodError | NoSuchMethodException ex) { if (!lenient) { throw new BeanException("Property '" + propertyName + "' is undefined for given bean from class " + clazz.getName() + "."); } } return null; }
From source file:cc.pp.analyzer.paoding.knife.PaodingMaker.java
@SuppressWarnings({ "rawtypes", "unchecked" })
private static Paoding createPaodingWithKnives(Properties p) throws Exception {
// PaodingHolderPaoding
// ?Paoding?paodingHolder
Paoding paoding = new Paoding();
// Knife//from w w w . j ava2 s . com
final Map /* <String, Knife> */ knifeMap = new HashMap /*
* <String,
* Knife>
*/();
final List /* <Knife> */ knifeList = new LinkedList/* <Knife> */();
final List /* <Function> */<Function> functions = new LinkedList/* <Function> */();
Iterator iter = p.entrySet().iterator();
while (iter.hasNext()) {
Map.Entry e = (Map.Entry) iter.next();
final String key = (String) e.getKey();
final String value = (String) e.getValue();
int index = key.indexOf(Constants.KNIFE_CLASS);
if (index == 0 && key.length() > Constants.KNIFE_CLASS.length()) {
final int end = key.indexOf('.', Constants.KNIFE_CLASS.length());
if (end == -1) {
Class clazz = Class.forName(value);
Knife knife = (Knife) clazz.newInstance();
knifeList.add(knife);
knifeMap.put(key, knife);
log.info("add knike: " + value);
} else {
// hashkey???????knife?
// ?functionsknife??
functions.add(new Function() {
@Override
public void run() throws Exception {
String knifeName = key.substring(0, end);
Object obj = knifeMap.get(knifeName);
if (!obj.getClass().getName().equals("org.springframework.beans.BeanWrapperImpl")) {
Class beanWrapperImplClass = Class
.forName("org.springframework.beans.BeanWrapperImpl");
Method setWrappedInstance = beanWrapperImplClass.getMethod("setWrappedInstance",
new Class[] { Object.class });
Object beanWrapperImpl = beanWrapperImplClass.newInstance();
setWrappedInstance.invoke(beanWrapperImpl, new Object[] { obj });
knifeMap.put(knifeName, beanWrapperImpl);
obj = beanWrapperImpl;
}
String propertyName = key.substring(end + 1);
Method setPropertyValue = obj.getClass().getMethod("setPropertyValue",
new Class[] { String.class, Object.class });
setPropertyValue.invoke(obj, new Object[] { propertyName, value });
}
});
}
}
}
// ???
for (Iterator iterator = functions.iterator(); iterator.hasNext();) {
Function function = (Function) iterator.next();
function.run();
}
// ?
paoding.setKnives(knifeList);
return paoding;
}