Example usage for java.lang.reflect Field getType

List of usage examples for java.lang.reflect Field getType

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Introduction

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

Prototype

public Class<?> getType()

Source Link

Document

Returns a Class object that identifies the declared type for the field represented by this Field object.

Usage

From source file:com.vk.sdk.api.model.ParseUtils.java

/**
* Parses object with follow rules:/*from  w  ww  .  j  ava 2  s  . c o  m*/
*
* 1. All fields should had a public access.
* 2. The name of the filed should be fully equal to name of JSONObject key.
* 3. Supports parse of all Java primitives, all {@link String},
* arrays of primitive types, {@link String}s and {@link com.vk.sdk.api.model.VKApiModel}s,
* list implementation line {@link com.vk.sdk.api.model.VKList}, {@link com.vk.sdk.api.model.VKAttachments.VKAttachment} or {@link com.vk.sdk.api.model.VKPhotoSizes},
* {@link com.vk.sdk.api.model.VKApiModel}s.
*
* 4. Boolean fields defines by vk_int == 1 expression.
* @param object object to initialize
* @param source data to read values
* @return initialized according with given data object
* @throws JSONException if source object structure is invalid
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public static <T> T parseViaReflection(T object, JSONObject source) throws JSONException {
    if (source.has("response")) {
        source = source.optJSONObject("response");
    }
    if (source == null) {
        return object;
    }
    for (Field field : object.getClass().getFields()) {
        field.setAccessible(true);
        String fieldName = field.getName();
        Class<?> fieldType = field.getType();

        Object value = source.opt(fieldName);
        if (value == null) {
            continue;
        }
        try {
            if (fieldType.isPrimitive() && value instanceof Number) {
                Number number = (Number) value;
                if (fieldType.equals(int.class)) {
                    field.setInt(object, number.intValue());
                } else if (fieldType.equals(long.class)) {
                    field.setLong(object, number.longValue());
                } else if (fieldType.equals(float.class)) {
                    field.setFloat(object, number.floatValue());
                } else if (fieldType.equals(double.class)) {
                    field.setDouble(object, number.doubleValue());
                } else if (fieldType.equals(boolean.class)) {
                    field.setBoolean(object, number.intValue() == 1);
                } else if (fieldType.equals(short.class)) {
                    field.setShort(object, number.shortValue());
                } else if (fieldType.equals(byte.class)) {
                    field.setByte(object, number.byteValue());
                }
            } else {
                Object result = field.get(object);
                if (value.getClass().equals(fieldType)) {
                    result = value;
                } else if (fieldType.isArray() && value instanceof JSONArray) {
                    result = parseArrayViaReflection((JSONArray) value, fieldType);
                } else if (VKPhotoSizes.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKAttachments.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKList.class.equals(fieldType)) {
                    ParameterizedType genericTypes = (ParameterizedType) field.getGenericType();
                    Class<?> genericType = (Class<?>) genericTypes.getActualTypeArguments()[0];
                    if (VKApiModel.class.isAssignableFrom(genericType)
                            && Parcelable.class.isAssignableFrom(genericType)
                            && Identifiable.class.isAssignableFrom(genericType)) {
                        if (value instanceof JSONArray) {
                            result = new VKList((JSONArray) value, genericType);
                        } else if (value instanceof JSONObject) {
                            result = new VKList((JSONObject) value, genericType);
                        }
                    }
                } else if (VKApiModel.class.isAssignableFrom(fieldType) && value instanceof JSONObject) {
                    result = ((VKApiModel) fieldType.newInstance()).parse((JSONObject) value);
                }
                field.set(object, result);
            }
        } catch (InstantiationException e) {
            throw new JSONException(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodException e) {
            throw new JSONException(e.getMessage());
        } catch (InvocationTargetException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodError e) {
            // ?????????? ???????:
            // ?? ?? ????????, ?? ? ????????? ???????? getFields() ???????? ??? ???.
            // ?????? ? ??????? ???????????, ????????? ?? ? ????????, ?????? Android ? ???????? ????????? ??????????.
            throw new JSONException(e.getMessage());
        }
    }
    return object;
}

From source file:com.vk.sdkweb.api.model.ParseUtils.java

/**
 * Parses object with follow rules://w w  w.j  a v a2  s  .  c  o  m
 *
 * 1. All fields should had a public access.
 * 2. The name of the filed should be fully equal to name of JSONObject key.
 * 3. Supports parse of all Java primitives, all {@link java.lang.String},
 *  arrays of primitive types, {@link java.lang.String}s and {@link com.vk.sdkweb.api.model.VKApiModel}s,
 *  list implementation line {@link com.vk.sdkweb.api.model.VKList}, {@link com.vk.sdkweb.api.model.VKAttachments.VKAttachment} or {@link com.vk.sdkweb.api.model.VKPhotoSizes},
 *  {@link com.vk.sdkweb.api.model.VKApiModel}s.
 *
 * 4. Boolean fields defines by vk_int == 1 expression.
 *
 * @param object object to initialize
 * @param source data to read values
 * @param <T> type of result
 * @return initialized according with given data object
 * @throws JSONException if source object structure is invalid
 */
@SuppressWarnings("rawtypes")
public static <T> T parseViaReflection(T object, JSONObject source) throws JSONException {
    if (source.has("response")) {
        source = source.optJSONObject("response");
    }
    if (source == null) {
        return object;
    }
    for (Field field : object.getClass().getFields()) {
        field.setAccessible(true);
        String fieldName = field.getName();
        Class<?> fieldType = field.getType();

        Object value = source.opt(fieldName);
        if (value == null) {
            continue;
        }
        try {
            if (fieldType.isPrimitive() && value instanceof Number) {
                Number number = (Number) value;
                if (fieldType.equals(int.class)) {
                    field.setInt(object, number.intValue());
                } else if (fieldType.equals(long.class)) {
                    field.setLong(object, number.longValue());
                } else if (fieldType.equals(float.class)) {
                    field.setFloat(object, number.floatValue());
                } else if (fieldType.equals(double.class)) {
                    field.setDouble(object, number.doubleValue());
                } else if (fieldType.equals(boolean.class)) {
                    field.setBoolean(object, number.intValue() == 1);
                } else if (fieldType.equals(short.class)) {
                    field.setShort(object, number.shortValue());
                } else if (fieldType.equals(byte.class)) {
                    field.setByte(object, number.byteValue());
                }
            } else {
                Object result = field.get(object);
                if (value.getClass().equals(fieldType)) {
                    result = value;
                } else if (fieldType.isArray() && value instanceof JSONArray) {
                    result = parseArrayViaReflection((JSONArray) value, fieldType);
                } else if (VKPhotoSizes.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKAttachments.class.isAssignableFrom(fieldType) && value instanceof JSONArray) {
                    Constructor<?> constructor = fieldType.getConstructor(JSONArray.class);
                    result = constructor.newInstance((JSONArray) value);
                } else if (VKList.class.equals(fieldType)) {
                    ParameterizedType genericTypes = (ParameterizedType) field.getGenericType();
                    Class<?> genericType = (Class<?>) genericTypes.getActualTypeArguments()[0];
                    if (VKApiModel.class.isAssignableFrom(genericType)
                            && Parcelable.class.isAssignableFrom(genericType)
                            && Identifiable.class.isAssignableFrom(genericType)) {
                        if (value instanceof JSONArray) {
                            result = new VKList((JSONArray) value, genericType);
                        } else if (value instanceof JSONObject) {
                            result = new VKList((JSONObject) value, genericType);
                        }
                    }
                } else if (VKApiModel.class.isAssignableFrom(fieldType) && value instanceof JSONObject) {
                    result = ((VKApiModel) fieldType.newInstance()).parse((JSONObject) value);
                }
                field.set(object, result);
            }
        } catch (InstantiationException e) {
            throw new JSONException(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodException e) {
            throw new JSONException(e.getMessage());
        } catch (InvocationTargetException e) {
            throw new JSONException(e.getMessage());
        } catch (NoSuchMethodError e) {
            //  ?:
            //   ,     getFields()   .
            //  ? ? ?,   ? ?,  Android  ?  .
            throw new JSONException(e.getMessage());
        }
    }
    return object;
}

From source file:com.ghy.common.util.reflection.ReflectionUtils.java

/**
 * value String/*  w  w w.j a v a 2 s . c o  m*/
 * , private/protected, ??setter.
 */
public static void setFieldsValues(final Object obj, final String fieldName, final Object value) {
    Field field = getAccessibleField(obj, fieldName);

    if (field == null) {
        return;
    }

    try {
        Class<?> type = field.getType();
        if (type.equals(Integer.class) || type.equals(int.class)) {
            field.set(obj, Integer.valueOf((String) value));
        } else if (type.equals(Long.class) || type.equals(long.class)) {
            field.set(obj, Long.valueOf((String) value));
        } else if (type.equals(Double.class) || type.equals(double.class)) {
            field.set(obj, Double.valueOf((String) value));
        } else if (type.equals(Float.class) || type.equals(float.class)) {
            field.set(obj, Float.valueOf((String) value));
        } else if (type.equals(Boolean.class) || type.equals(boolean.class)) {
            field.set(obj, Boolean.valueOf((String) value));
        } else if (type.equals(Date.class)) {
            field.set(obj, new SimpleDateFormat("yyyyMMddHHmmsssss").parse((String) value));
        } else {
            field.set(obj, value);
        }
    } catch (IllegalAccessException e) {
        logger.error(":{}", e.getMessage());
    } catch (IllegalArgumentException e) {
        logger.error(":{}", e.getMessage());
        e.printStackTrace();
    } catch (ParseException e) {
        logger.error(":{}", e.getMessage());
        e.printStackTrace();
    }
}

From source file:com.frame.base.utils.ReflectionUtils.java

/**
 * Setter. valueClass?Setter.//from   w w  w .  ja  v  a 2  s .  co  m
 * @throws NoSuchFieldException 
 * @throws SecurityException 
 */
public static void _invokeSetterMethod(Object obj, String propertyName, Object value) {
    String[] methods = StringUtils.split(propertyName, '.');
    int len = methods.length - 1;
    for (int i = 0; i < len; i++)
        obj = invokeGetter(obj, methods[i]);
    try {
        Field filed = obj.getClass().getDeclaredField(methods[len]);
        if (filed.getType().getSimpleName().equals("BigDecimal")) {
            invokeSetter(obj, methods[len], new BigDecimal(value.toString()));
        } else {
            invokeSetter(obj, methods[len], value);
        }
    } catch (Exception e) {
        // TODO Auto-generated catch block
        invokeSetter(obj, methods[len], value);
    }

}

From source file:jfix.util.Reflections.java

/**
 * Retrieves all objects of given class-type which are referred by all the
 * objects in given collection.//  w  w  w . jav  a 2  s .com
 */
public static Set<Object> getReferredObjects(Collection<?> objects, Class<?> objectClass) {
    try {
        Set<Object> result = new HashSet<>();
        for (Object object : objects) {
            for (Field field : Reflections.getFields(object.getClass())) {
                if (isAssignable(objectClass, field)) {
                    Object fieldValue = field.get(object);
                    if (fieldValue != null) {
                        if (field.getType().isArray()) {
                            for (Object arrayElement : (Object[]) fieldValue) {
                                result.add(arrayElement);
                            }
                        } else {
                            result.add(fieldValue);
                        }
                    }
                }
            }
        }
        return result;
    } catch (Exception e) {
        throw new RuntimeException(e.getMessage(), e);
    }
}

From source file:org.cybercat.automation.annotations.AnnotationBuilder.java

/**
 * @param entity/*from w w w.  jav a  2s.co  m*/
 * @param fields
 * @param i
 * @return
 * @throws AutomationFrameworkException
 */
@SuppressWarnings("unchecked")
private static <T> Class<AbstractFeature> processCCFeatureField(T entity, Field field)
        throws AutomationFrameworkException {
    Class<AbstractFeature> clazz;
    try {
        clazz = (Class<AbstractFeature>) field.getType();
    } catch (Exception e) {
        throw new AutomationFrameworkException("Unexpected field type :" + field.getType().getSimpleName()
                + " field name: " + field.getName() + " class: " + entity.getClass().getSimpleName()
                + " Thread ID:" + Thread.currentThread().getId()
                + " \n\tThis field must be of the type that extends AbstractPageObject class.", e);
    }
    try {
        field.set(entity, createFeature(versionControlPreprocessor(clazz)));
    } catch (Exception e) {
        throw new AutomationFrameworkException(
                "Set filed exception. Please, save this log and contact the Cybercat project support."
                        + " field name: " + field.getName() + " class: " + entity.getClass().getSimpleName()
                        + " Thread ID:" + Thread.currentThread().getId(),
                e);
    }
    return clazz;
}

From source file:com.ms.commons.test.common.ReflectUtil.java

public static void setValueToBean(Object bean, String field, Object value) {
    Class<?> clazz = bean.getClass();
    try {/*from   w ww .java  2 s .co  m*/
        Field f = getDeclaredField(clazz, NamingUtil.dbNameToJavaName(field));
        f.setAccessible(true);
        try {
            f.set(bean, TypeConvertUtil.convert(f.getType(), value));
        } catch (IllegalArgumentException e) {
            throw new UnknowException(e);
        } catch (IllegalAccessException e) {
            throw new UnknowException(e);
        }
    } catch (SecurityException e) {
        throw new UnknowException(e);
    } catch (NoSuchFieldException e) {
        throw new JavaFieldNotFoundException(clazz, field);
    }
}

From source file:gumga.framework.presentation.api.CSVGeneratorAPI.java

public static StringBuilder objectToCsvLine(Object gm) {
    StringBuilder sb = new StringBuilder();
    for (Field f : getAllAtributes(gm.getClass())) {
        try {// ww  w. j  a  v a 2s.c o  m
            f.setAccessible(true);
            if (f.get(gm) != null) {
                Field idField = getIdField(f.getType());
                if (idField != null) {
                    idField.setAccessible(true);
                    Object idValue = idField.get(f.get(gm));
                    sb.append(idValue.toString());
                } else if (f.getType().equals(Date.class)) {
                    sb.append(SDF.format(f.get(gm)));
                } else {
                    sb.append(f.get(gm).toString());
                }
            }
        } catch (Exception ex) {
            log.error("erro ao criar linha csv", ex);
        }
        sb.append(CSV_SEPARATOR);
    }
    sb.deleteCharAt(sb.length() - 1);
    sb.append(CSV_LINE_DELIMITER);
    return sb;
}

From source file:com.facebook.presto.hive.TestPrestoS3FileSystem.java

@SuppressWarnings("unchecked")
private static <T> T getFieldValue(Object instance, Class<?> clazz, String name, Class<T> type) {
    try {// w  w  w .j a va  2  s  .co  m
        Field field = clazz.getDeclaredField(name);
        checkArgument(field.getType() == type, "expected %s but found %s", type, field.getType());
        field.setAccessible(true);
        return (T) field.get(instance);
    } catch (ReflectiveOperationException e) {
        throw Throwables.propagate(e);
    }
}

From source file:cn.afterturn.easypoi.util.PoiPublicUtil.java

/**
 * ?java/*  w  w  w .j  ava  2 s. co m*/
 *
 * @param field
 * @return
 */
public static boolean isJavaClass(Field field) {
    Class<?> fieldType = field.getType();
    boolean isBaseClass = false;
    if (fieldType.isArray()) {
        isBaseClass = false;
    } else if (fieldType.isPrimitive() || fieldType.getPackage() == null
            || "java.lang".equals(fieldType.getPackage().getName())
            || "java.math".equals(fieldType.getPackage().getName())
            || "java.sql".equals(fieldType.getPackage().getName())
            || "java.time".equals(fieldType.getPackage().getName())
            || "java.util".equals(fieldType.getPackage().getName())) {
        isBaseClass = true;
    }
    return isBaseClass;
}