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.conversantmedia.mapreduce.tool.DistributedResourceManager.java

/**
 * Locates the resources in the configuration and distributed cache, etc., 
 * and sets them on the provided mapper instance.
 * //from w  w w  . jav  a2 s.  c o m
 * @param bean            the object to inspect for resource annotations
 * @param config         the job configuration
 * @throws ToolException   if there are errors with reflection or the cache
 */
@SuppressWarnings("unchecked")
public static void initializeResources(Object bean, Configuration config) throws ToolException {
    try {
        List<Field> fields = MaraAnnotationUtil.INSTANCE.findAnnotatedFields(bean.getClass(), Resource.class);
        Path[] files = org.apache.hadoop.util.StringUtils
                .stringToPath(config.getStrings(MRJobConfig.CACHE_LOCALFILES));
        for (Field field : fields) {
            Resource resAnnotation = field.getAnnotation(Resource.class);
            String key = StringUtils.isEmpty(resAnnotation.name()) ? field.getName() : resAnnotation.name();
            String resourceId = config.get(CONFIGKEYBASE_RESOURCE + key);
            if (resourceId != null) {
                String[] parts = StringUtils.split(resourceId, VALUE_SEP);
                String className = parts[0];
                String valueString = parts[1];

                // Retrieve the value
                Object value = getResourceValue(field, valueString, className, files);

                setFieldValue(field, bean, value);
            }
        }
    } catch (IllegalArgumentException | IOException | ClassNotFoundException | IllegalAccessException e) {
        throw new ToolException(e);
    }
}

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From source file:com.epam.ta.reportportal.database.search.CriteriaMap.java

public static String getQueryCriteria(Field f) {
    String queryCriteria;//from w w w . ja va 2s  . co  m
    if (f.isAnnotationPresent(org.springframework.data.mongodb.core.mapping.Field.class)) {
        queryCriteria = f.getAnnotation(org.springframework.data.mongodb.core.mapping.Field.class).value();
    } else {
        queryCriteria = f.getName();
    }
    return queryCriteria;
}

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From source file:com.diversityarrays.dal.db.DalDatabaseUtil.java

static public Map<Field, Column> buildEntityFieldColumnMap(Class<? extends DalEntity> entityClass) {
    Map<Field, Column> columnByField = new LinkedHashMap<Field, Column>();

    for (Field fld : entityClass.getDeclaredFields()) {
        if (!Modifier.isStatic(fld.getModifiers())) {
            Column column = fld.getAnnotation(Column.class);
            fld.setAccessible(true);//from www  .j  a v a 2s  .  c om
            columnByField.put(fld, column);
        }
    }

    return columnByField;
}

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From source file:com.adobe.acs.commons.mcp.util.AnnotatedFieldDeserializer.java

@SuppressWarnings("squid:S3776")
private static void parseInput(Object target, ValueMap input, Field field)
        throws ReflectiveOperationException, ParseException {
    FormField inputAnnotation = field.getAnnotation(FormField.class);
    Object value;//from  w w  w  .  j a  v  a  2 s.  c o m
    if (input.get(field.getName()) == null) {
        if (inputAnnotation != null && inputAnnotation.required()) {
            if (field.getType() == Boolean.class || field.getType() == Boolean.TYPE) {
                value = false;
            } else {
                throw new NullPointerException("Required field missing: " + field.getName());
            }
        } else {
            return;
        }
    } else {
        value = input.get(field.getName());
    }

    if (hasMultipleValues(field.getType())) {
        parseInputList(target, serializeToStringArray(value), field);
    } else {
        Object val = value;
        if (value.getClass().isArray()) {
            val = ((Object[]) value)[0];
        }

        if (val instanceof RequestParameter) {
            /** Special case handling uploaded files; Method call ~ copied from parseInputValue(..) **/
            if (field.getType() == RequestParameter.class) {
                FieldUtils.writeField(field, target, val, true);
            } else {
                try {
                    FieldUtils.writeField(field, target, ((RequestParameter) val).getInputStream(), true);
                } catch (IOException ex) {
                    LOG.error("Unable to get InputStream for uploaded file [ {} ]",
                            ((RequestParameter) val).getName(), ex);
                }
            }
        } else {
            parseInputValue(target, String.valueOf(val), field);
        }
    }
}

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From source file:com.darkstar.beanCartography.utils.NameUtils.java

/**
 * @param field field to check/*from   w  ww  . j  a va2s  .c o m*/
 * @return the name associated to the field
 */
public static String getBusinessName(Field field) {
    Preconditions.checkNotNull(field, "Field cannot be null");
    if (hasBusinessName(field))
        return field.getAnnotation(NamedField.class).name();
    return null;
}

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From source file:edu.usu.sdl.openstorefront.core.util.EntityUtil.java

public static <T extends BaseEntity> boolean isPKFieldGenerated(T entity) {
    boolean generated = false;

    Field field = getPKField(entity);
    if (field != null) {
        PK idAnnotation = field.getAnnotation(PK.class);
        if (idAnnotation != null) {
            generated = idAnnotation.generated();
        }// www  .j a v  a 2  s.  c  o  m
    } else {
        throw new OpenStorefrontRuntimeException("Unable to find PK for enity: " + entity.getClass().getName(),
                "Check entity passed in.");
    }

    return generated;
}

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From source file:com.u2apple.tool.util.AndroidDeviceUtils.java

public static String getPropertyByKey(AndroidDeviceRanking androidDevice, String key) {
    if (androidDevice == null || key == null) {
        return null;
    }/*from w  ww  .j a va  2s.c  o  m*/
    for (Field field : androidDevice.getClass().getSuperclass().getDeclaredFields()) {
        field.setAccessible(true);
        if (field.isAnnotationPresent(Key.class)) {
            Key keyAnno = field.getAnnotation(Key.class);
            if (keyAnno.value().equals(key)) {
                try {
                    return (String) field.get(androidDevice);
                } catch (IllegalArgumentException | IllegalAccessException ex) {
                    Logger.getLogger(AndroidDeviceUtils.class.getName()).log(Level.SEVERE, null, ex);
                }
            }
        }
    }
    return null;
}

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From source file:org.querybyexample.jpa.JpaUtil.java

public static <T extends Identifiable<?>> String compositePkPropertyName(T entity) {
    for (Method m : entity.getClass().getMethods()) {
        if (m.getAnnotation(EmbeddedId.class) != null) {
            return BeanUtils.findPropertyForMethod(m).getName();
        }//from   ww  w  .  ja v  a 2 s  . c  om
    }
    for (Field f : entity.getClass().getFields()) {
        if (f.getAnnotation(EmbeddedId.class) != null) {
            return f.getName();
        }
    }
    return null;
}

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From source file:org.querybyexample.jpa.JpaUtil.java

public static <T extends Identifiable<?>> boolean hasSimplePk(T entity) {
    for (Method m : entity.getClass().getMethods()) {
        if (m.getAnnotation(Id.class) != null) {
            return true;
        }//www  .  ja  v  a  2s.  co m
    }
    for (Field f : entity.getClass().getFields()) {
        if (f.getAnnotation(Id.class) != null) {
            return true;
        }
    }
    return false;
}

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From source file:edu.usu.sdl.openstorefront.core.util.EntityUtil.java

/**
 * This will set default on the fields that are marked with a default and
 * are null//ww w.j  a v  a 2s  .c  om
 *
 * @param entity
 */
public static void setDefaultsOnFields(Object entity) {
    Objects.requireNonNull(entity, "Entity must not be NULL");
    List<Field> fields = getAllFields(entity.getClass());
    for (Field field : fields) {
        DefaultFieldValue defaultFieldValue = field.getAnnotation(DefaultFieldValue.class);
        if (defaultFieldValue != null) {
            field.setAccessible(true);
            try {
                if (field.get(entity) == null) {
                    String value = defaultFieldValue.value();
                    Class fieldClass = field.getType();
                    if (fieldClass.getSimpleName().equalsIgnoreCase(String.class.getSimpleName())) {
                        field.set(entity, value);
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(Long.class.getSimpleName())) {
                        field.set(entity, value);
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(Integer.class.getSimpleName())) {
                        field.set(entity, Integer.parseInt(value));
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(Boolean.class.getSimpleName())) {
                        field.set(entity, Convert.toBoolean(value));
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(Double.class.getSimpleName())) {
                        field.set(entity, Double.parseDouble(value));
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(Float.class.getSimpleName())) {
                        field.set(entity, Float.parseFloat(value));
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(BigDecimal.class.getSimpleName())) {
                        field.set(entity, Convert.toBigDecimal(value));
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(Date.class.getSimpleName())) {
                        field.set(entity, TimeUtil.fromString(value));
                    } else if (fieldClass.getSimpleName().equalsIgnoreCase(BigInteger.class.getSimpleName())) {
                        field.set(entity, new BigInteger(value));
                    }
                }
            } catch (IllegalArgumentException | IllegalAccessException ex) {
                throw new OpenStorefrontRuntimeException(
                        "Unable to get value on " + entity.getClass().getName(), "Check entity passed in.");
            }
        }
    }
}

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