Example usage for java.lang Class cast

List of usage examples for java.lang Class cast

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Introduction

In this page you can find the example usage for java.lang Class cast.

Prototype

@SuppressWarnings("unchecked")
@HotSpotIntrinsicCandidate
public T cast(Object obj)

Source Link

Document

Casts an object to the class or interface represented by this Class object.

Usage

From source file:org.solmix.runtime.support.spring.SpringBeanProvider.java

/**
 * {@inheritDoc}//from   w  w  w. j  av a2  s  .  co m
 * 
 * @see org.solmix.api.bean.ConfiguredBeanProvider#loadBeansOfType(java.lang.Class,
 *      org.solmix.api.bean.ConfiguredBeanProvider.BeanLoaderListener)
 */
@Override
public <T> boolean loadBeansOfType(Class<T> type, BeanLoaderListener<T> listener) {
    List<String> list = new ArrayList<String>(Arrays.asList(context.getBeanNamesForType(type, false, false)));
    list.removeAll(passThroughs);
    Collections.reverse(list);
    boolean loaded = false;
    for (String s : list) {
        Class<?> beanType = context.getType(s);
        Class<? extends T> t = beanType.asSubclass(type);
        if (listener.loadBean(s, t)) {
            Object o = context.getBean(s);
            if (listener.beanLoaded(s, type.cast(o))) {
                return true;
            }
            loaded = true;
        }
    }
    return loaded || original.loadBeansOfType(type, listener);
}

From source file:com.orchestra.portale.controller.EditEventController.java

@RequestMapping(value = "/editevent", params = "id")
public ModelAndView editEventbyID(@RequestParam(value = "id") String id) {
    ModelAndView model = new ModelAndView("editform");
    try {// w w  w. j  ava  2s .c om
        CompletePOI poi = pm.getCompletePoiById(id);
        model.addObject("nome", poi.getName());
        model.addObject("loc", poi.getLocation());
        model.addObject("cat", poi.getCategories());
        model.addObject("id", poi.getId());
        model.addObject("shortD", poi.getShortDescription());
        model.addObject("addr", poi.getAddress());
        model.addObject("start", poi.getStart_date());
        model.addObject("end", poi.getEnd_date());

        for (AbstractPoiComponent comp : poi.getComponents()) {

            //associazione delle componenti al model tramite lo slug
            String slug = comp.slug();
            int index = slug.lastIndexOf(".");
            String cname = slug.substring(index + 1).replace("Component", "").toLowerCase();

            try {
                Class c = Class.forName(slug);
                model.addObject(cname, c.cast(comp));
            } catch (ClassNotFoundException ex) {
                Logger.getLogger(PoiViewController.class.getName()).log(Level.SEVERE, null, ex);

            }
        }
        return model;
    } catch (RuntimeException e) {
        ModelAndView model2 = new ModelAndView("errorViewPoi");
        model2.addObject("err", "Errore impossibile trovare il poi con id: " + id);
        return model2;
    }
}

From source file:com.orchestra.portale.controller.EditEventController.java

@RequestMapping(value = "/editevent", params = "name")
public ModelAndView editPoi(@RequestParam(value = "name") String name) {
    ModelAndView model = new ModelAndView("editeventform");
    try {//from  w ww .j a v  a  2  s .c  om
        CompletePOI poi = pm.findOneCompletePoiByName(name);
        model.addObject("nome", poi.getName());
        model.addObject("loc", poi.getLocation());
        model.addObject("cat", poi.getCategories());
        model.addObject("id", poi.getId());
        model.addObject("shortD", poi.getShortDescription());
        model.addObject("addr", poi.getAddress());
        model.addObject("start", poi.getStart_date());
        model.addObject("end", poi.getEnd_date());

        for (AbstractPoiComponent comp : poi.getComponents()) {

            //associazione delle componenti al model tramite lo slug
            String slug = comp.slug();
            int index = slug.lastIndexOf(".");
            String cname = slug.substring(index + 1).replace("Component", "").toLowerCase();

            try {
                Class c = Class.forName(slug);
                model.addObject(cname, c.cast(comp));
            } catch (ClassNotFoundException ex) {
                Logger.getLogger(PoiViewController.class.getName()).log(Level.SEVERE, null, ex);

            }

        }

        return model;
    } catch (RuntimeException e) {
        ModelAndView model2 = new ModelAndView("errorViewPoi");
        model2.addObject("err", "Errore impossibile trovare il poi: " + e.toString());
        return model2;
    }
}

From source file:de.zib.gndms.infra.system.GNDMSystemDirectory.java

/**
 * Returns the instance, which has been registered on {@link #instances} with the name <tt>name</tt>.
 * The instace will be casted to the parameter <tt>T</tt> of <tt>clazz</tt>.
 *
 * @param clazz the class the instance belongs to
 * @param name the name of the instance as denoted on the map {@link #instances}
 * @param <T> the class the instance will be casted to
 * @return an instance from the <tt>instances</tt> map
 *//*  w  w w .j  a  va2 s.  co m*/
public synchronized @NotNull <T> T getInstance(@NotNull Class<? extends T> clazz, @NotNull String name) {
    final Object obj = instances.get(name);
    if (obj == null)
        throw new IllegalStateException("Null instance retrieved or invalid or unregistered name");
    return clazz.cast(obj);
}

From source file:com.github.yongchristophertang.engine.web.response.JsonResultTransformer.java

/**
 * Transform the json result to an instance of T.
 *
 * @param clazz the type class of transformed object
 *//*ww w . jav  a  2  s  . c om*/
public <T> ResultTransform<T> object(Class<T> clazz) {
    return result -> {
        ObjectMapper mapper = new ObjectMapper();
        mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
        mapper.configure(JsonParser.Feature.ALLOW_UNQUOTED_FIELD_NAMES, true);
        try {
            return expression == null ? mapper.readValue(result.getResponseStringContent(), clazz)
                    : mapper.readValue(
                            JsonPath.compile(expression).read(result.getResponseStringContent()).toString(),
                            clazz);
        } catch (JsonParseException e) {
            Objects.nonNull(expression);
            return clazz.cast(JsonPath.compile(expression).read(result.getResponseStringContent()));
        }
    };
}

From source file:org.apache.taverna.scufl2.validation.correctness.CorrectnessVisitor.java

public <T> T findAncestral(Child<?> bean, Class<T> class1) {
    T result = null;//from   w ww  .  jav a2  s  . co m
    for (WorkflowBean parent = bean.getParent(); parent != null; parent = ((Child<?>) parent).getParent()) {
        if (class1.isInstance(parent))
            return class1.cast(parent);
        if (!(parent instanceof Child))
            return null;
    }
    return result;
}

From source file:it.attocchi.jsf2.PageBase.java

protected <T> T getParamObject(String paramName, Class<T> clazz) {
    T res = null;//from w  w  w . j av  a 2 s .c o  m

    try {
        if (hasParam(paramName)) {
            Object o = getExternalContext().getRequestParameterMap().get(paramName);
            if (o != null) {
                res = clazz.cast(o);
            }
        }
    } catch (Exception ex) {
        logger.error("getParamObject", ex);
    }

    return res;
}

From source file:integration.DiskUsageTest.java

/**
 * Retrieve a model object from the database. Assumed to exist.
 * @param targetClass the object's class
 * @param targetId the object's ID/*from w  w  w .  j a  v a  2s.c  om*/
 * @return the object
 * @throws ServerError if the retrieval failed
 */
private <X extends IObject> X queryForObject(Class<X> targetClass, long targetId) throws ServerError {
    final String query = "FROM " + targetClass.getSimpleName() + " WHERE id = " + targetId;
    final List<List<RType>> results = iQuery.projection(query, null);
    return targetClass.cast(((RObject) results.get(0).get(0)).getValue());
}

From source file:edu.gmu.isa681.ctn.EncodedChannel.java

/**
 * Decodes an encoded packet if and only if: 1) it is marked by Encodeable, and 2) has the same type as 
 * the expected type./*from   www  .  j  a  v a  2  s .c  o m*/
 * 
 * @param encoded
 * @param expectedType
 * @return
 * @throws UnexpectedTypeException if either of the two conditions is violated.
 */
private Encodeable decode(final String encoded, Class<? extends Encodeable> expectedType)
        throws UnexpectedTypeException {
    try {
        JsonAdaptor adaptor = gson.fromJson(encoded, JsonAdaptor.class);

        // do NOT change the "false" to true. We don't want any code to run until the type is validated
        Class<?> actual = Class.forName(adaptor.getType(), false, getClass().getClassLoader());

        // check if type is marked by Encodeable
        if (expectedType.isAssignableFrom(actual)) {
            Object body = gson.fromJson(adaptor.getBody(), actual);
            return expectedType.cast(body);

        } else {
            throw new UnexpectedTypeException(adaptor.getType());
        }

    } catch (JsonSyntaxException | ClassNotFoundException ex) {
        throw new UnexpectedTypeException(ex);
    }
}

From source file:org.jboss.spring.support.SpringInjectionSupport.java

/**
 * @param jndiName      the JNDI location of the Spring context relative to
 *                      'java:' on JBoss AS5 and JBoss AS6 and 'java:jboss' on JBoss AS7
 * @param expectedClass the expected type of the retrieved object
 * @return/*w w  w . j a  v a2s.c o  m*/
 */
private <T> T lookup(String jndiName, Class<T> expectedClass) {
    Object instance;
    try {
        InitialContext initialContext = new InitialContext();
        instance = initialContext.lookup(jndiName);
        if (!(expectedClass.isAssignableFrom(instance.getClass()))) {
            throw new IllegalArgumentException("Cannot retrieve an " + expectedClass.getName() + " from "
                    + jndiName + " - a " + instance.getClass().getName() + " found instead");
        }
    } catch (NamingException e) {
        throw new IllegalStateException(e);
    }
    return expectedClass.cast(instance);
}