Example usage for java.lang.reflect Field getModifiers

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

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Introduction

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

Prototype

public int getModifiers()

Source Link

Document

Returns the Java language modifiers for the field represented by this Field object, as an integer.

Usage

From source file:com.taobao.tdhs.client.protocol.TDHSProtocolBinary.java

protected static void encodeRequest(Request o, ByteArrayOutputStream out, String charsetName)
        throws IllegalAccessException, IOException, TDHSEncodeException {
    for (Field f : o.getClass().getDeclaredFields()) {
        if (!Modifier.isPublic(f.getModifiers())) {
            f.setAccessible(true);/*from w w w. ja  v a  2  s  . c om*/
        }
        Object v = f.get(o);
        if (v instanceof Request) {
            encodeRequest((Request) v, out, charsetName);
        } else if (f.getName().startsWith("_")) {
            writeObjectToStream(v, out, f.getName(), charsetName);
        }
    }
}

From source file:com.ejisto.modules.web.util.FieldSerializationUtil.java

public static List<MockedField> translateObject(Object object, String containerClassName, String fieldName,
        String contextPath) {//from w  w  w . jav a  2  s. c  o m
    if (object == null) {
        return emptyList();
    }
    if (isBlackListed(object.getClass())) {
        String fieldType = object.getClass().getName();
        MockedField out = buildMockedField(containerClassName, fieldName, contextPath, fieldType);
        return asList(out);
    }
    DefaultSupportedType type = DefaultSupportedType.evaluate(object);
    if (type != null && type.isPrimitiveOrSimpleValue()) {
        return asList(getSingleFieldFromDefaultSupportedType(object, type, contextPath, containerClassName,
                fieldName));
    }
    List<MockedField> out = new ArrayList<MockedField>();
    Class<?> objectClass = object.getClass();
    String className = objectClass.getName();
    for (Field field : objectClass.getDeclaredFields()) {
        if (!Modifier.isTransient(field.getModifiers()) && !isBlackListed(field.getType())) {
            out.add(translateField(field, object, className, contextPath));
        }
    }
    return out;
}

From source file:ClassTree.java

/**
 * Returns a description of the fields of a class.
 * @param the class to be described/*from  ww  w  . ja v a2s. co  m*/
 * @return a string containing all field types and names
 */
public static String getFieldDescription(Class<?> c) {
    // use reflection to find types and names of fields
    StringBuilder r = new StringBuilder();
    Field[] fields = c.getDeclaredFields();
    for (int i = 0; i < fields.length; i++) {
        Field f = fields[i];
        if ((f.getModifiers() & Modifier.STATIC) != 0)
            r.append("static ");
        r.append(f.getType().getName());
        r.append(" ");
        r.append(f.getName());
        r.append("\n");
    }
    return r.toString();
}

From source file:com.googlecode.xtecuannet.framework.catalina.manager.tomcat.constants.Constants.java

public static List<Field> getOnlyFields(Class clazz) {

    List<Field> salida = new ArrayList<Field>(0);

    Field[] all = clazz.getDeclaredFields();

    for (int i = 0; i < all.length; i++) {
        Field field = all[i];

        logger.debug(Modifier.toString(field.getModifiers()) + "-" + field.getModifiers());
        if (field.getModifiers() == Modifier.PRIVATE) {

            salida.add(field);// w  w w .j  a  v  a 2  s  .  co m
        }
    }

    return salida;
}

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 {/*w  ww .j  a v  a2  s . c  o  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.springmodules.cache.util.Reflections.java

/**
 * <p>// w  w w .j  a  v  a 2  s .  c  o  m
 * This method uses reflection to build a valid hash code.
 * </p>
 *
 * <p>
 * It uses <code>AccessibleObject.setAccessible</code> to gain access to
 * private fields. This means that it will throw a security exception if run
 * under a security manager, if the permissions are not set up correctly. It
 * is also not as efficient as testing explicitly.
 * </p>
 *
 * <p>
 * Transient members will not be used, as they are likely derived fields,
 * and not part of the value of the <code>Object</code>.
 * </p>
 *
 * <p>
 * Static fields will not be tested. Superclass fields will be included.
 * </p>
 *
 * @param obj
 *          the object to create a <code>hashCode</code> for
 * @return the generated hash code, or zero if the given object is
 *         <code>null</code>
 */
public static int reflectionHashCode(Object obj) {
    if (obj == null)
        return 0;

    Class targetClass = obj.getClass();
    if (Objects.isArrayOfPrimitives(obj) || Objects.isPrimitiveOrWrapper(targetClass)) {
        return Objects.nullSafeHashCode(obj);
    }

    if (targetClass.isArray()) {
        return reflectionHashCode((Object[]) obj);
    }

    if (obj instanceof Collection) {
        return reflectionHashCode((Collection) obj);
    }

    if (obj instanceof Map) {
        return reflectionHashCode((Map) obj);
    }

    // determine whether the object's class declares hashCode() or has a
    // superClass other than java.lang.Object that declares hashCode()
    Class clazz = (obj instanceof Class) ? (Class) obj : obj.getClass();
    Method hashCodeMethod = ReflectionUtils.findMethod(clazz, "hashCode", new Class[0]);

    if (hashCodeMethod != null) {
        return obj.hashCode();
    }

    // could not find a hashCode other than the one declared by java.lang.Object
    int hash = INITIAL_HASH;

    try {
        while (targetClass != null) {
            Field[] fields = targetClass.getDeclaredFields();
            AccessibleObject.setAccessible(fields, true);

            for (int i = 0; i < fields.length; i++) {
                Field field = fields[i];
                int modifiers = field.getModifiers();

                if (!Modifier.isStatic(modifiers) && !Modifier.isTransient(modifiers)) {
                    hash = MULTIPLIER * hash + reflectionHashCode(field.get(obj));
                }
            }
            targetClass = targetClass.getSuperclass();
        }
    } catch (IllegalAccessException exception) {
        // ///CLOVER:OFF
        ReflectionUtils.handleReflectionException(exception);
        // ///CLOVER:ON
    }

    return hash;
}

From source file:ReflectionTest.java

/**
 * Prints all fields of a class//from  www . j  a v a 2  s . com
 * @param cl a class
 */
public static void printFields(Class cl) {
    Field[] fields = cl.getDeclaredFields();

    for (Field f : fields) {
        Class type = f.getType();
        String name = f.getName();
        System.out.print("   ");
        String modifiers = Modifier.toString(f.getModifiers());
        if (modifiers.length() > 0)
            System.out.print(modifiers + " ");
        System.out.println(type.getName() + " " + name + ";");
    }
}

From source file:Main.java

public static boolean equals(Object target, Object o) {
    if (target == o)
        return true;
    if (target == null || o == null)
        return false;
    if (!target.getClass().equals(o.getClass()))
        return false;

    Class<?> current = target.getClass();
    do {//from   w  w w.ja  v  a  2  s.com
        for (Field f : current.getDeclaredFields()) {
            if (Modifier.isStatic(f.getModifiers()) || Modifier.isTransient(f.getModifiers())
                    || f.isSynthetic()) {
                continue;
            }

            Object self;
            Object other;
            try {
                f.setAccessible(true);
                self = f.get(target);
                other = f.get(o);
            } catch (IllegalAccessException e) {
                throw new IllegalStateException(e);
            }
            if (self == null) {
                if (other != null)
                    return false;
            } else if (self.getClass().isArray()) {
                if (self.getClass().equals(boolean[].class)) {
                    if (!Arrays.equals((boolean[]) self, (boolean[]) other))
                        return false;
                } else if (self.getClass().equals(char[].class)) {
                    if (!Arrays.equals((char[]) self, (char[]) other))
                        return false;
                } else if (self.getClass().equals(byte[].class)) {
                    if (!Arrays.equals((byte[]) self, (byte[]) other))
                        return false;
                } else if (self.getClass().equals(short[].class)) {
                    if (!Arrays.equals((short[]) self, (short[]) other))
                        return false;
                } else if (self.getClass().equals(int[].class)) {
                    if (!Arrays.equals((int[]) self, (int[]) other))
                        return false;
                } else if (self.getClass().equals(long[].class)) {
                    if (!Arrays.equals((long[]) self, (long[]) other))
                        return false;
                } else if (self.getClass().equals(float[].class)) {
                    if (!Arrays.equals((float[]) self, (float[]) other))
                        return false;
                } else if (self.getClass().equals(double[].class)) {
                    if (!Arrays.equals((double[]) self, (double[]) other))
                        return false;
                } else {
                    if (!Arrays.equals((Object[]) self, (Object[]) other))
                        return false;
                }
            } else if (!self.equals(other)) {
                return false;
            }
        }
        current = current.getSuperclass();
    } while (!Object.class.equals(current));

    return true;
}

From source file:com.yahoo.egads.data.JsonEncoder.java

public static void // modifies json_out
        toJson(Object object, JSONStringer json_out) throws Exception {
    json_out.object();/*from ww w .j  a  v  a2  s.com*/
    // for each inherited class...
    for (Class c = object.getClass(); c != Object.class; c = c.getSuperclass()) {
        // for each member variable... 
        Field[] fields = c.getDeclaredFields();
        for (Field f : fields) {
            // if variable is static/private... skip it
            if (Modifier.isStatic(f.getModifiers())) {
                continue;
            }
            if (Modifier.isPrivate(f.getModifiers())) {
                continue;
            }
            Object value = f.get(object);

            // if variable is a complex type... recurse on sub-objects
            if (value instanceof JsonAble) {
                json_out.key(f.getName());
                ((JsonAble) value).toJson(json_out);
                // if variable is an array... recurse on sub-objects
            } else if (value instanceof ArrayList) {
                json_out.key(f.getName());
                json_out.array();
                for (Object e : (ArrayList) value) {
                    toJson(e, json_out);
                }
                json_out.endArray();
                // if variable is a simple type... convert to json
            } else {
                json_out.key(f.getName()).value(value);
            }
        }
    }
    json_out.endObject();
}

From source file:Main.java

public static String[] getClassStaticFieldNames(Class c, Type fieldType, String nameContains) {
    Field[] fields = c.getDeclaredFields();
    List<String> list = new ArrayList<>();
    for (Field field : fields) {
        try {//from   ww  w . j a  v  a 2 s .  c  o m
            boolean isString = field.getType().equals(fieldType);
            boolean containsExtra = field.getName().contains(nameContains);
            boolean isStatic = Modifier.isStatic(field.getModifiers());
            if (field.getType().equals(String.class) && field.getName().contains("EXTRA_")
                    && Modifier.isStatic(field.getModifiers()))
                list.add(String.valueOf(field.get(null)));
        } catch (IllegalAccessException iae) {
            Log.d(TAG,
                    "!!!!!!!!!!!! class Static field, illegal access exception message: " + iae.getMessage());
        }
    }
    return list.toArray(new String[list.size()]);
}