Example usage for java.lang.reflect Field getAnnotation

Introduction

In this page you can find the example usage for java.lang.reflect Field getAnnotation.

Prototype

public <T extends Annotation> T getAnnotation(Class<T> annotationClass) 

Source Link

Usage

From source file:com.flipkart.polyguice.dropwiz.DropConfigProvider.java

private Object getValueFromFields(String path, Class<?> type, Object inst) throws Exception {
    Field[] fields = type.getDeclaredFields();
    for (Field field : fields) {
        JsonProperty ann = field.getAnnotation(JsonProperty.class);
        if (ann != null) {
            String annName = ann.value();
            if (StringUtils.isBlank(annName)) {
                annName = ann.defaultValue();
            }//from   w w w.java2s. co m
            if (StringUtils.isBlank(annName)) {
                annName = field.getName();
            }
            if (StringUtils.equals(path, annName)) {
                boolean accessible = field.isAccessible();
                if (!accessible) {
                    field.setAccessible(true);
                }
                Object value = field.get(inst);
                if (!accessible) {
                    field.setAccessible(false);
                }
                return value;
            }
        }
    }
    return null;
}

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From source file:com.graphaware.importer.cache.BaseCaches.java

/**
 * {@inheritDoc}//from  ww  w.  ja va  2 s .c  o m
 */
@Override
public void inject(Importer importer) {
    Assert.notNull(importer);

    for (Field field : ReflectionUtils.getAllFields(importer.getClass())) {
        if (field.getAnnotation(InjectCache.class) != null) {
            field.setAccessible(true);
            try {
                field.set(importer, getCache(field.getAnnotation(InjectCache.class).name()));
            } catch (IllegalAccessException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

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From source file:com.graphaware.importer.cache.BaseCaches.java

/**
 * {@inheritDoc}//from   w  w  w  .  j a  v a2 s . c om
 */
@Override
public Set<String> createdCaches(Importer importer) {
    Assert.notNull(importer);

    Set<String> result = new HashSet<>();

    for (Field field : ReflectionUtils.getAllFields(importer.getClass())) {
        if (field.getAnnotation(InjectCache.class) != null
                && field.getAnnotation(InjectCache.class).creator()) {
            result.add(field.getAnnotation(InjectCache.class).name());
        }
    }

    return result;
}

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From source file:com.googlesource.gerrit.plugins.rabbitmq.config.AMQProperties.java

public AMQProperties(PluginProperties properties) {
    this.message = properties.getSection(Message.class);
    this.headers = new HashMap<>();
    for (Section section : properties.getSections()) {
        for (Field f : section.getClass().getFields()) {
            if (f.isAnnotationPresent(MessageHeader.class)) {
                MessageHeader mh = f.getAnnotation(MessageHeader.class);
                try {
                    Object value = f.get(section);
                    if (value == null) {
                        continue;
                    }//from www.  ja  va 2s  . c o m
                    switch (f.getType().getSimpleName()) {
                    case "String":
                        headers.put(mh.value(), value.toString());
                        break;
                    case "Integer":
                        headers.put(mh.value(), Integer.valueOf(value.toString()));
                        break;
                    case "Long":
                        headers.put(mh.value(), Long.valueOf(value.toString()));
                        break;
                    case "Boolean":
                        headers.put(mh.value(), Boolean.valueOf(value.toString()));
                        break;
                    default:
                        break;
                    }
                } catch (IllegalAccessException | IllegalArgumentException ex) {
                    LOGGER.warn("Cannot access field {}. Cause: {}", f.getName(), ex.getMessage());
                }
            }
        }
    }
}

---

From source file:eu.artofcoding.beetlejuice.spring.Slf4jPostProcessor.java

public Object postProcessBeforeInitialization(final Object bean, final String beanName) throws BeansException {
    ReflectionUtils.doWithFields(bean.getClass(), new ReflectionUtils.FieldCallback() {
        @SuppressWarnings("unchecked")
        public void doWith(Field field) throws IllegalArgumentException, IllegalAccessException {
            ReflectionUtils.makeAccessible(field);
            // Check if the field is annoted with @Slf4j
            if (field.getAnnotation(Slf4j.class) != null) {
                logger.debug("Injecting Logger into " + beanName + "/" + bean.getClass());
                //Slf4j slf4jAnnotation = field.getAnnotation(Slf4j.class);
                Logger logger = LoggerFactory.getLogger(bean.getClass());
                field.set(bean, logger);
            }// w w  w .ja v  a  2 s  . c om
        }
    });
    return bean;
}

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From source file:com.googlecode.dex2jar.tools.BaseCmd.java

protected void initOptionFromClass(Class<?> clz) {
    if (clz == null) {
        return;//from   w w w. jav  a  2  s . co m
    } else {
        initOptionFromClass(clz.getSuperclass());
    }
    Field[] fs = clz.getDeclaredFields();
    for (Field f : fs) {
        Opt opt = f.getAnnotation(Opt.class);
        if (opt != null) {
            f.setAccessible(true);
            if (!opt.hasArg()) {
                Class<?> type = f.getType();
                if (!type.equals(boolean.class)) {
                    throw new RuntimeException(
                            "the type of " + f + " must be boolean, as it is declared as no args");
                }
                boolean b;
                try {
                    b = (Boolean) f.get(this);
                } catch (Exception e) {
                    throw new RuntimeException(e);
                }
                if (b) {
                    throw new RuntimeException(
                            "the value of " + f + " must be false, as it is declared as no args");
                }
            }
            Option option = new Option(opt.opt(), opt.hasArg(), opt.description());
            option.setRequired(opt.required());
            if (!"".equals(opt.longOpt())) {
                option.setLongOpt(opt.longOpt());
            }
            if (!"".equals(opt.argName())) {
                option.setArgName(opt.argName());
            }
            options.addOption(option);
            map.put(opt.opt(), f);
        }
    }
}

---

From source file:edu.usu.sdl.openstorefront.validation.ForeignKeyRule.java

@Override
protected boolean validate(Field field, Object dataObject) {
    boolean valid = true;

    if (dataObject != null) {
        FK fk = field.getAnnotation(FK.class);
        if (fk != null) {
            if (fk.enforce()) {
                try {
                    String value = BeanUtils.getProperty(dataObject, field.getName());
                    if (value != null) {
                        Class fkClass = fk.value();
                        Service serviceProxy = ServiceProxyFactory.getServiceProxy();
                        if (StringUtils.isNotBlank(fk.referencedField())) {
                            Object referenceEntity = fkClass.newInstance();
                            Field referenceField = ReflectionUtil.getField(referenceEntity,
                                    fk.referencedField());
                            if (referenceField != null) {
                                if (referenceEntity instanceof BaseEntity) {
                                    referenceField.setAccessible(true);
                                    referenceField.set(referenceEntity, value);
                                    Object entity = ((BaseEntity) referenceEntity).find();
                                    if (entity == null) {
                                        valid = false;
                                    }//from  ww  w  .j a va2s.co m
                                } else {
                                    throw new OpenStorefrontRuntimeException(
                                            "Reference Class is not a Base Entity: " + fkClass.getName());
                                }
                            } else {
                                throw new OpenStorefrontRuntimeException("Reference field: "
                                        + fk.referencedField() + " not on Class: " + fkClass.getSimpleName(),
                                        "check code");
                            }
                        } else {
                            Object entity = serviceProxy.getPersistenceService().findById(fkClass, value);
                            if (entity == null) {
                                valid = false;
                            }
                        }
                    }
                } catch (InstantiationException | IllegalAccessException | NoSuchMethodException
                        | InvocationTargetException ex) {
                    throw new OpenStorefrontRuntimeException(
                            "Unexpected error occur trying get original field value.", ex);
                }
            }
        }
    }

    return valid;
}

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From source file:com.ls.http.base.handler.MultipartRequestHandler.java

private void formMultipartEntityObject(Object source) {
    Class<?> currentClass = source.getClass();
    while (!Object.class.equals(currentClass)) {
        Field[] fields = currentClass.getDeclaredFields();
        for (int counter = 0; counter < fields.length; counter++) {
            Field field = fields[counter];
            Expose expose = field.getAnnotation(Expose.class);
            if (expose != null && !expose.deserialize() || Modifier.isTransient(field.getModifiers())) {
                continue;// We don't have to copy ignored fields.
            }//  w  w w.  jav  a2  s.  c o m
            field.setAccessible(true);
            Object value;

            String name;
            SerializedName serializableName = field.getAnnotation(SerializedName.class);
            if (serializableName != null) {
                name = serializableName.value();
            } else {
                name = field.getName();
            }
            try {
                value = field.get(source);
                addEntity(name, value);
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                e.printStackTrace();
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
        }
        currentClass = currentClass.getSuperclass();
    }
    httpentity = entity.build();
}

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From source file:com.cognifide.qa.bb.aem.ui.DialogFieldProvider.java

/**
 * Looks for DialogField annotation, reads locator data from the annotation instance
 * and asks AemDialogFieldResolver to produce a dialog field instance for the class field.
 *///from  w  w w. j a v a  2  s .com
@Override
public Optional<Object> provideValue(Object pageObject, Field field, PageObjectContext context) {
    AemDialogFieldResolver aemDialogFieldResolver = fieldResolverProvider.get();
    DialogField dialogFieldAnnotation = field.getAnnotation(DialogField.class);

    String searchBy;
    Class<?> type = field.getType();
    Object dialogField = null;
    if (StringUtils.isNotEmpty(dialogFieldAnnotation.label())) {
        searchBy = dialogFieldAnnotation.label();
        dialogField = aemDialogFieldResolver.getField(searchBy, type);
    } else if (StringUtils.isNotEmpty(dialogFieldAnnotation.css())) {
        searchBy = dialogFieldAnnotation.css();
        dialogField = aemDialogFieldResolver.getFieldByCss(searchBy, type);
    } else if (StringUtils.isNotEmpty(dialogFieldAnnotation.name())) {
        searchBy = dialogFieldAnnotation.name();
        dialogField = aemDialogFieldResolver.getFieldByName(searchBy, type);
    } else if (StringUtils.isNotEmpty(dialogFieldAnnotation.xpath())) {
        searchBy = dialogFieldAnnotation.xpath();
        dialogField = aemDialogFieldResolver.getFieldByXpath(searchBy, type);
    }
    return Optional.ofNullable(dialogField);
}

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From source file:com.ripariandata.timberwolf.conf4j.ConfigFileParser.java

public ConfigFileParser(final Object bean) {
    for (Class c = bean.getClass(); c != null; c = c.getSuperclass()) {
        for (Field f : c.getDeclaredFields()) {
            ConfigEntry entry = f.getAnnotation(ConfigEntry.class);
            if (entry != null) {
                fields.put(entry.name(), new FieldSetter(bean, f));
                entries.add(entry);//w  w w .j av a2 s  .  c o  m
            }
        }
    }
}

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