Example usage for java.lang.reflect Method getReturnType

Introduction

In this page you can find the example usage for java.lang.reflect Method getReturnType.

Prototype

public Class<?> getReturnType() 

Source Link

Document

Returns a Class object that represents the formal return type of the method represented by this Method object.

Usage

From source file:bdi4jade.util.ReflectionUtils.java

private static boolean isGetter(Method method) {
    if (!method.getName().startsWith(GETTER_PREFIX))
        return false;
    if (method.getParameterTypes().length != 0)
        return false;
    if (void.class.equals(method.getReturnType()))
        return false;
    return true;//w  w  w. j  av  a  2  s .c  om
}

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From source file:bdi4jade.util.ReflectionUtils.java

private static boolean isSetter(Method method) {
    if (!method.getName().startsWith(SETTER_PREFIX))
        return false;
    if (method.getParameterTypes().length != 1)
        return false;
    if (!void.class.equals(method.getReturnType()))
        return false;
    return true;//from  w  ww.  j av a 2 s.c om
}

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From source file:edu.umn.msi.tropix.proteomics.parameters.ParameterUtils.java

/**
 * This is the (mostly) inverse of {@link #setParametersFromMap(Map, Object)}. Given a parameter object that is bean where the parameters are the
 * attributes with a simple type (i.e. Double, Integer, Float, or Boolean), a map of the attribute names to values (as strings) is
 * created./*from  w ww .  ja  v a 2s  .c  o m*/
 * 
 * @param parameters
 *          Parameter object to pull keys and values from.
 * @return
 */
@SuppressWarnings("unchecked")
public static void setMapFromParameters(final Object parameters, final Map parameterMap) {
    final List<Class> simpleTypes = java.util.Arrays.asList(new Class[] { Double.class, Integer.class,
            Float.class, Boolean.class, Long.class, String.class, Short.class, double.class, int.class,
            float.class, boolean.class, long.class, short.class });
    for (final Method method : parameters.getClass().getMethods()) {
        String methodName = method.getName();
        if (method.getParameterTypes().length != 0
                || !(methodName.startsWith("get") || methodName.startsWith("is"))
                || !simpleTypes.contains(method.getReturnType())) {
            continue;
        }
        String attributeName;
        if (methodName.startsWith("get")) {
            attributeName = methodName.substring(3, 4).toLowerCase() + methodName.substring(4);
        } else { // is method
            attributeName = methodName.substring(2, 3).toLowerCase() + methodName.substring(3);
        }
        Object result;
        try {
            result = method.invoke(parameters);
        } catch (final Exception e) {
            logger.info(e);
            throw new IllegalArgumentException(
                    "Failed to invoke get method on bean, should not happen with simple beans.", e);
        }
        if (result != null) {
            parameterMap.put(attributeName, result.toString());
        } // else null value found in setMapFromParameters, not adding it to the map"
    }
}

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From source file:it.sample.parser.util.CommonsUtil.java

/**
 * metodo di utilita' per controllare che un metodo sia un getter
 * /*from ww  w  .j  a v a  2s .com*/
 * @param method
 * @return true se il metodo e' un getter, false altrimenti
 */
private static boolean isGetter(Method method) {
    if (!method.getName().startsWith("get"))
        return false;
    if (method.getParameterTypes().length != 0)
        return false;
    if (void.class.equals(method.getReturnType()))
        return false;
    return true;
}

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From source file:com.hihframework.core.utils.BeanUtils.java

public static void bean2Bean(Object src, Object dest, String... excludes) {
    if (src == null || dest == null || src == dest)
        return;//from   w w w .  java  2  s .  co m
    Method[] methods = src.getClass().getDeclaredMethods();
    for (Method m : methods) {
        String name = m.getName();
        if (!Modifier.isPublic(m.getModifiers()))
            continue;
        if (!name.startsWith("get") && !name.startsWith("is"))
            continue;
        if (Collection.class.isAssignableFrom(m.getReturnType()))
            continue;
        boolean exc = false;
        for (String exclude : excludes) {
            if (name.equalsIgnoreCase(exclude)) {
                exc = true;
                break;
            }
        }
        if (exc)
            continue;
        int position = name.startsWith("get") ? 3 : 2;
        String method = name.substring(position);
        try {
            Object val = m.invoke(src);
            if (val == null)
                continue;
            Method targetFun = dest.getClass().getMethod("set" + method, m.getReturnType());
            targetFun.invoke(dest, val);
        } catch (Exception e) {
            log.error(e);
        }

    }
}

---

From source file:com.github.cherimojava.data.mongo.entity.EntityUtils.java

/**
 * returns the setter method of the given getter method or throws an exception if no such method exists
 *
 * @param m getter method for which a matching setter method shall be found
 * @return setter method belonging to the given getter method
 * @throws java.lang.IllegalArgumentException if the given getter Method has no setter method
 *///from w  w  w . j  a v a2 s  . c  o  m
static Method getSetterFromGetter(Method m) {
    try {
        return m.getDeclaringClass()
                .getMethod(m.getName().startsWith("get") ? m.getName().replaceFirst("g", "s")
                        : m.getName().replaceFirst("is", "set"), m.getReturnType());
    } catch (NoSuchMethodException e) {
        throw new IllegalArgumentException(format("Method %s has no corresponding setter method", m.getName()));
    }
}

---

From source file:com.baasbox.configuration.PropertiesConfigurationHelper.java

public static String dumpConfiguration(String section) {
    Class en = CONFIGURATION_SECTIONS.get(section);
    try {// w w  w  . j a v  a2  s  .  co  m
        StringBuilder sb = new StringBuilder();
        String enumDescription = "";

        Method getEnumDescription = en.getMethod("getEnumDescription");
        if (getEnumDescription != null && getEnumDescription.getReturnType() == String.class
                && Modifier.isStatic(getEnumDescription.getModifiers()))
            enumDescription = (String) getEnumDescription.invoke(null);

        sb.append(enumDescription);
        sb.append("\n");
        sb.append(section.toUpperCase());
        sb.append("\n");

        String lastSection = "";
        EnumSet values = EnumSet.allOf(en);
        for (Object v : values) {
            String key = (String) ((Method) v.getClass().getMethod("getKey")).invoke(v);
            Object value = ((Method) en.getMethod("getValue")).invoke(v);
            String subsection = key.substring(0, key.indexOf('.'));

            if (!lastSection.equals(subsection)) {
                sb.append("  - ");
                sb.append(subsection.toUpperCase());
                sb.append("\n");
                lastSection = subsection;
            }
            sb.append("      + ");
            sb.append(key);
            sb.append(" = ");
            sb.append(value);
            sb.append("\n");
        }
        return sb.toString();
    } catch (Exception e) {
        BaasBoxLogger.error("Cannot generate a json for " + en.getSimpleName()
                + " Enum. Is it an Enum that implements the IProperties interface?", e);
    }
    return "";
}

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From source file:com.netflix.hystrix.contrib.javanica.cache.CacheInvocationContextFactory.java

private static MethodExecutionAction createCacheKeyAction(String method, MetaHolder metaHolder) {
    MethodExecutionAction cacheKeyAction = null;
    if (StringUtils.isNotBlank(method)) {
        Method cacheKeyMethod = getDeclaredMethod(metaHolder.getObj().getClass(), method,
                metaHolder.getMethod().getParameterTypes());
        if (cacheKeyMethod == null) {
            throw new HystrixCachingException("method with name '" + method + "' doesn't exist in class '"
                    + metaHolder.getObj().getClass() + "'");
        }//ww w  .j a v  a 2  s. c o m
        if (!cacheKeyMethod.getReturnType().equals(String.class)) {
            throw new HystrixCachingException("return type of cacheKey method must be String. Method: '"
                    + method + "', Class: '" + metaHolder.getObj().getClass() + "'");
        }

        MetaHolder cMetaHolder = MetaHolder.builder().obj(metaHolder.getObj()).method(cacheKeyMethod)
                .args(metaHolder.getArgs()).build();
        cacheKeyAction = new MethodExecutionAction(cMetaHolder.getObj(), cacheKeyMethod, cMetaHolder.getArgs(),
                cMetaHolder);
    }
    return cacheKeyAction;
}

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From source file:com.amalto.core.metadata.ClassRepository.java

private static Method[] getMethods(Class clazz) {
    // TMDM-5851: Work around several issues in introspection (getDeclaredMethods() and getMethods() may return
    // inherited methods if returned type is a sub class of super class method).
    Map<String, Class<?>> superClassMethods = new HashMap<String, Class<?>>();
    if (clazz.getSuperclass() != null) {
        for (Method method : clazz.getSuperclass().getMethods()) {
            superClassMethods.put(method.getName(), method.getReturnType());
        }/* w w w  .j a v a2s  .co  m*/
    }
    Map<String, Method> methods = new HashMap<String, Method>();
    for (Method method : clazz.getDeclaredMethods()) {
        if (!(superClassMethods.containsKey(method.getName())
                && superClassMethods.get(method.getName()).equals(method.getReturnType()))) {
            methods.put(method.getName(), method);
        }
    }
    Method[] allMethods = clazz.getMethods();
    for (Method method : allMethods) {
        if (!methods.containsKey(method.getName())) {
            methods.put(method.getName(), method);
        }
    }
    Method[] classMethods = methods.values().toArray(new Method[methods.size()]);
    // TMDM-5483: getMethods() does not always return methods in same order: sort them to ensure fixed order.
    Arrays.sort(classMethods, new Comparator<Method>() {
        @Override
        public int compare(Method method1, Method method2) {
            return method1.getName().compareTo(method2.getName());
        }
    });
    return classMethods;
}

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From source file:jp.terasoluna.fw.web.struts.actions.FileDownloadUtil.java

/**
 * uEU_E??[h?B//from   w w w  .  j  a v  a 2  s.c o  m
 *
 * @param result _E??[hf?[^?CX^X?B
 * @param request NGXg?B
 * @param response X|X?B
 */
@SuppressWarnings("unchecked")
public static void download(Object result, HttpServletRequest request, HttpServletResponse response) {
    List<AbstractDownloadObject> downloadList = new ArrayList<AbstractDownloadObject>();

    if (result instanceof AbstractDownloadObject) {
        downloadList.add((AbstractDownloadObject) result);
    } else {
        BeanWrapper wrapper = new BeanWrapperImpl(result);
        PropertyDescriptor[] propertyDescriptors = wrapper.getPropertyDescriptors();
        for (PropertyDescriptor propertyDescriptor : propertyDescriptors) {
            Method readMethod = propertyDescriptor.getReadMethod();
            if (readMethod == null) {
                continue;
            }
            Class type = readMethod.getReturnType();
            if (AbstractDownloadObject.class.isAssignableFrom(type)) {
                downloadList
                        .add((AbstractDownloadObject) wrapper.getPropertyValue(propertyDescriptor.getName()));
            }
        }
    }

    if (downloadList.isEmpty()) {
        return;
    }
    // _E??[hIuWFNg???O
    if (downloadList.size() != 1) {
        throw new SystemException(new IllegalStateException("Too many AbstractDownloadObject properties."),
                TOO_MANY_DOWNLOAD_ERROR);
    }

    try {
        download(downloadList.get(0), request, response, true);
    } catch (SocketException e) {
        if (log.isDebugEnabled()) {
            log.debug(e.getMessage(), e);
        }
    } catch (IOException e) {
        if (log.isErrorEnabled()) {
            log.error("IOException has occurred while downloading", e);
        }
    }
}

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