Example usage for java.lang Class getDeclaredFields

Introduction

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

Prototype

@CallerSensitive
public Field[] getDeclaredFields() throws SecurityException 

Source Link

Document

Returns an array of Field objects reflecting all the fields declared by the class or interface represented by this Class object.

Usage

From source file:ch.algotrader.util.FieldUtil.java

/**
 * Returns all non-static / non-transient Fields including Fields defined by superclasses of the defined {@code type}
 *//*from  www.  j a va2  s. com*/
public static List<Field> getAllFields(Class<?> type) {

    List<Field> fields = new ArrayList<>();

    while (true) {

        for (Field field : type.getDeclaredFields()) {
            if (!Modifier.isStatic(field.getModifiers()) && !Modifier.isTransient(field.getModifiers())) {
                setAccessible(field);
                fields.add(field);
            }
        }

        type = type.getSuperclass();
        if (type == Object.class || type == null) {
            break;
        }
    }

    return fields;
}

---

From source file:io.github.pellse.decorator.util.reflection.ReflectionUtils.java

public static void copyFields(Object src, Object target) {

    Class<?> targetClass = target.getClass();
    do {//from   w w  w.j  ava2  s  .co m
        stream(targetClass.getDeclaredFields())
                .forEach(field -> CheckedRunnable.of(() -> field.set(target, field.get(src))).run());
        targetClass = targetClass.getSuperclass();
    } while (targetClass != null && targetClass != Object.class);
}

---

From source file:com.francetelecom.clara.cloud.presentation.utils.GetObjectsUtils.java

public static Field[] getAllFields(Class objectClass) {
    if (objectClass.getSuperclass() == null) {
        return null;
    }/*from   w  ww.  j a  va2s  . co  m*/
    return (Field[]) ArrayUtils.addAll(objectClass.getDeclaredFields(),
            getAllFields(objectClass.getSuperclass()));
}

---

From source file:com.edmunds.autotest.ClassUtil.java

public static Map<String, Field> getAllDeclaredFieldsMap(Class originalCls, boolean lowercase,
        AutoTestConfig config) {//w  w w  .java2 s.  c o  m
    Map<String, Field> fields = new HashMap<String, Field>();

    Class cls = originalCls;

    do {
        for (Field field : cls.getDeclaredFields()) {
            String fieldName = field.getName();

            if (lowercase) {
                fieldName = fieldName.toLowerCase();
            }

            if (fields.containsKey(fieldName)) {

                if (isDeclaredUnderRootPackage(config, field)
                        && !config.getFieldOverrideExceptions().contains(field.getName())) {

                    String msg = "Instance variable (" + field.getName() + ") has been overridden: "
                            + originalCls.getName();
                    log.warn(msg);

                    if (config.isFailOnFieldOverride()) {
                        fail(msg);
                    }
                }
            } else {
                fields.put(fieldName, field);
            }
        }
        cls = cls.getSuperclass();
    } while (cls != null);
    return fields;
}

---

From source file:com.hortonworks.minicluster.util.ReflectionUtils.java

/**
 *
 * @param clazz//  ww w  .  j  av  a  2  s  . c  om
 * @param fieldName
 * @return
 */
public static Field getFieldAndMakeAccessible(Class<?> clazz, String fieldName) {
    ObjectAssertUtils.assertNotNull(clazz);
    StringAssertUtils.assertNotEmptyAndNoSpaces(fieldName);
    Class<?> searchType = clazz;
    while (!Object.class.equals(searchType) && searchType != null) {
        Field[] fields = searchType.getDeclaredFields();
        for (Field field : fields) {
            if (fieldName == null || fieldName.equals(field.getName())) {
                field.setAccessible(true);
                return field;
            }
        }
        searchType = searchType.getSuperclass();
    }
    return null;
}

---

From source file:jfix.util.Reflections.java

/**
 * Initializes all declared static string fields in given class with name of
 * fields.//from  w ww. jav a  2  s .  c om
 */
public static void init(Class<?> clazz) {
    for (Field field : clazz.getDeclaredFields()) {
        field.setAccessible(true);
        try {
            field.set(null, field.getName());
        } catch (Exception e) {
        }
    }
}

---

From source file:org.wso2.carbon.ganalytics.publisher.GoogleAnalyticsDataPublisher.java

/**
 * Use this method to retireve a payload a list of NameValuePair.
 * @param o a GoogleAnalyticsData object
 * @return list of NamevaluePairs to be used in httpclient entity
 *//*from  w  w  w  . jav  a  2 s  .c o m*/
public static List<NameValuePair> buildPayload(Object o) {
    List<NameValuePair> payload = new ArrayList<NameValuePair>();
    Class<?> clazz = o.getClass();

    Field[] fields = clazz.getDeclaredFields();

    for (int i = 0; i < fields.length; i++) {
        fields[i].setAccessible(true);
        String fieldValue = getFieldValue(fields[i], o);
        fields[i].setAccessible(false);

        if (fieldValue == null) {
            continue;
        }

        NameValuePair nvp = new BasicNameValuePair(
                GoogleAnalyticsConstants.METHOD_TO_PARAM_MAP.get(fields[i].getName()), fieldValue);
        payload.add(nvp);
    }

    return payload;
}

---

From source file:Main.java

public static int hashCode(Object target) {
    if (target == null)
        return 0;
    final int prime = 31;
    int result = 1;

    Class<?> current = target.getClass();
    do {/*from   w ww  .  j av a  2  s  .co m*/
        for (Field f : current.getDeclaredFields()) {
            if (Modifier.isStatic(f.getModifiers()) || Modifier.isTransient(f.getModifiers())
                    || f.isSynthetic()) {
                continue;
            }

            Object self;
            try {
                f.setAccessible(true);
                self = f.get(target);
            } catch (IllegalAccessException e) {
                throw new IllegalStateException(e);
            }
            if (self == null) {
                result = prime * result + 0;
            } else if (self.getClass().isArray()) {
                if (self.getClass().equals(boolean[].class)) {
                    result = prime * result + Arrays.hashCode((boolean[]) self);
                } else if (self.getClass().equals(char[].class)) {
                    result = prime * result + Arrays.hashCode((char[]) self);
                } else if (self.getClass().equals(byte[].class)) {
                    result = prime * result + Arrays.hashCode((byte[]) self);
                } else if (self.getClass().equals(short[].class)) {
                    result = prime * result + Arrays.hashCode((short[]) self);
                } else if (self.getClass().equals(int[].class)) {
                    result = prime * result + Arrays.hashCode((int[]) self);
                } else if (self.getClass().equals(long[].class)) {
                    result = prime * result + Arrays.hashCode((long[]) self);
                } else if (self.getClass().equals(float[].class)) {
                    result = prime * result + Arrays.hashCode((float[]) self);
                } else if (self.getClass().equals(double[].class)) {
                    result = prime * result + Arrays.hashCode((double[]) self);
                } else {
                    result = prime * result + Arrays.hashCode((Object[]) self);
                }
            } else {
                result = prime * result + self.hashCode();
            }

            System.out.println(f.getName() + ": " + result);
        }
        current = current.getSuperclass();
    } while (!Object.class.equals(current));

    return result;
}

---

From source file:org.wso2.carbon.ganalytics.publisher.GoogleAnalyticsDataPublisher.java

/**
 * Use this method to retrieve a payload as string.
 * @param o a GoogleAnalyticsData object
 * @return query param string//from ww  w  . ja  v  a  2s .c o m
 */
public static String buildPayloadString(Object o) {
    String queryString = "";
    Class<?> clazz = o.getClass();

    Field[] fields = clazz.getDeclaredFields();

    for (int i = 0; i < fields.length; i++) {
        fields[i].setAccessible(true);
        String fieldValue = getFieldValue(fields[i], o);
        fields[i].setAccessible(false);

        if (fieldValue == null) {
            continue;
        }

        queryString = queryString
                + encodeString(GoogleAnalyticsConstants.METHOD_TO_PARAM_MAP.get(fields[i].getName())) + "="
                + encodeString(fieldValue) + "&";
    }

    queryString = queryString.substring(0, queryString.length() - 1);

    return queryString;
}

---

From source file:com.yimidida.shards.utils.ParameterUtil.java

public static Serializable extractPrimaryKey(Object object) {
    if (object != null) {
        Class<?> clazz = object.getClass();
        Field[] first = clazz.getDeclaredFields();
        Field[] second = clazz.getSuperclass().getDeclaredFields();

        Field[] fields = Arrays.copyOf(first, first.length + second.length);
        System.arraycopy(second, 0, fields, first.length, second.length);

        for (Field field : fields) {
            field.setAccessible(true);//from  w  w w .j av a 2  s . c om

            PrimaryKey primaryKey = field.getAnnotation(PrimaryKey.class);
            if (primaryKey != null) {
                try {
                    //0
                    Object result = field.get(object);
                    if (result != null && "0".equals(result.toString())) {
                        return null;
                    }
                    return (Serializable) result;
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

    }

    return null;
}

---

• «
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 48
• 49
• 50
• »