Example usage for java.lang Class isAssignableFrom

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public native boolean isAssignableFrom(Class<?> cls);

Source Link

Document

Determines if the class or interface represented by this Class object is either the same as, or is a superclass or superinterface of, the class or interface represented by the specified Class parameter.

Usage

From source file:de.pribluda.android.jsonmarshaller.JSONMarshaller.java

/**
 * recursively marshall to JSON/* ww  w.  j ava 2s. c o  m*/
 *
 * @param sink
 * @param object
 */
static void marshallRecursive(JSONObject sink, Object object)
        throws JSONException, InvocationTargetException, IllegalAccessException, NoSuchMethodException {
    // nothing to marshall
    if (object == null)
        return;
    // primitive object is a field and does not interes us here
    if (object.getClass().isPrimitive())
        return;
    // object not null,  and is not primitive - iterate through getters
    for (Method method : object.getClass().getMethods()) {
        // our getters are parameterless and start with "get"
        if ((method.getName().startsWith(GETTER_PREFIX) && method.getName().length() > BEGIN_INDEX
                || method.getName().startsWith(IS_PREFIX) && method.getName().length() > IS_LENGTH)
                && (method.getModifiers() & Modifier.PUBLIC) != 0 && method.getParameterTypes().length == 0
                && method.getReturnType() != void.class) {
            // is return value primitive?
            Class<?> type = method.getReturnType();
            if (type.isPrimitive() || String.class.equals(type)) {
                // it is, marshall it
                Object val = method.invoke(object);
                if (val != null) {
                    sink.put(propertize(method.getName()), val);
                }
                continue;
            } else if (type.isArray()) {
                Object val = marshallArray(method.invoke(object));
                if (val != null) {
                    sink.put(propertize(method.getName()), val);
                }
                continue;
            } else if (type.isAssignableFrom(Date.class)) {
                Date date = (Date) method.invoke(object);
                if (date != null) {
                    sink.put(propertize(method.getName()), date.getTime());
                }
                continue;
            } else if (type.isAssignableFrom(Boolean.class)) {
                Boolean b = (Boolean) method.invoke(object);
                if (b != null) {
                    sink.put(propertize(method.getName()), b.booleanValue());
                }
                continue;
            } else if (type.isAssignableFrom(Integer.class)) {
                Integer i = (Integer) method.invoke(object);
                if (i != null) {
                    sink.put(propertize(method.getName()), i.intValue());
                }
                continue;
            } else if (type.isAssignableFrom(Long.class)) {
                Long l = (Long) method.invoke(object);
                if (l != null) {
                    sink.put(propertize(method.getName()), l.longValue());
                }
                continue;
            } else {
                // does it have default constructor?
                try {
                    if (method.getReturnType().getConstructor() != null) {
                        Object val = marshall(method.invoke(object));
                        if (val != null) {
                            sink.put(propertize(method.getName()), val);
                        }
                        continue;
                    }
                } catch (NoSuchMethodException ex) {
                    // just ignore it here, it means no such constructor was found
                }
            }
        }
    }
}

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From source file:me.xiaopan.android.gohttp.requestobject.RequestParser.java

/**
 * ?type/*w ww.  jav  a 2s.c  o m*/
 */
private static boolean isArrayByType(Field field, Class<?> type) {
    Class<?> fieldType = field.getType();
    return fieldType.isArray() && type.isAssignableFrom(fieldType.getComponentType());
}

---

From source file:ca.uhn.fhir.rest.method.MethodUtil.java

@SuppressWarnings("unchecked")
public static <T extends IIdType> T convertIdToType(IIdType value, Class<T> theIdParamType) {
    if (value != null && !theIdParamType.isAssignableFrom(value.getClass())) {
        IIdType newValue = ReflectionUtil.newInstance(theIdParamType);
        newValue.setValue(value.getValue());
        value = newValue;/*from   www . ja v a 2s .c  o  m*/
    }
    return (T) value;
}

---

From source file:com.initialxy.cordova.themeablebrowser.ThemeableBrowserUnmarshaller.java

/**
 * Given an object extracted from JSONObject field, convert it to an
 * appropriate object with type appropriate for given type so that it can be
 * assigned to the associated field of the ummarshalled object. eg.
 * JSONObject value from a JSONObject field probably needs to be
 * unmarshalled to a class instance. Double from JSONObject may need to be
 * converted to Float. etc.//  ww w .j av  a2  s  .c  o  m
 *
 * @param val Value extracted from JSONObject field.
 * @param genericType Type to convert to. Must be generic type. ie. From
 *                    field.getGenericType().
 * @return Object of the given type so it can be assinged to field with
 * field.set().
 * @throws com.initialxy.cordova.themeablebrowser.ThemeableBrowserUnmarshaller.TypeMismatchException
 */
private static Object valToType(Object val, Type genericType) {
    Object result = null;
    boolean isArray = false;

    Class<?> rawType = null;
    if (genericType instanceof ParameterizedType) {
        rawType = (Class<?>) ((ParameterizedType) genericType).getRawType();
    } else if (genericType instanceof GenericArrayType) {
        rawType = List.class;
        isArray = true;
    } else {
        rawType = (Class<?>) genericType;
    }

    isArray = isArray || rawType.isArray();

    if (val != null && val != JSONObject.NULL) {
        if (rawType.isAssignableFrom(String.class)) {
            if (val instanceof String) {
                result = val;
            } else {
                throw new TypeMismatchException(rawType, val.getClass());
            }
        } else if (isPrimitive(rawType)) {
            result = convertToPrimitiveFieldObj(val, rawType);
        } else if (isArray || rawType.isAssignableFrom(List.class)) {
            if (val instanceof JSONArray) {
                Type itemType = getListItemType(genericType);
                result = JSONToList((JSONArray) val, itemType);

                if (isArray) {
                    List<?> list = (List<?>) result;

                    Class<?> itemClass = null;
                    if (itemType instanceof ParameterizedType) {
                        itemClass = (Class<?>) ((ParameterizedType) itemType).getRawType();
                    } else {
                        itemClass = (Class<?>) itemType;
                    }

                    result = Array.newInstance(itemClass, list.size());
                    int cnt = 0;
                    for (Object i : list) {
                        Array.set(result, cnt, i);
                        cnt += 1;
                    }
                }
            } else {
                throw new TypeMismatchException(JSONArray.class, val.getClass());
            }
        } else if (val instanceof JSONObject) {
            result = JSONToObj((JSONObject) val, rawType);
        }
    }

    return result;
}

---

From source file:com.evolveum.midpoint.schema.util.WfContextUtil.java

@SuppressWarnings("unchecked")
public static <T extends CaseEventType> List<T> getEvents(@NotNull WfContextType wfc, @NotNull Class<T> clazz) {
    return wfc.getEvent().stream().filter(e -> clazz.isAssignableFrom(e.getClass())).map(e -> (T) e)
            .collect(Collectors.toList());
}

---

From source file:jp.terasoluna.fw.collector.util.ControlBreakChecker.java

/**
 * ???????????.<br>// w  ww.j a  v  a  2  s . c  o m
 * <ul>
 * <li>??null?????????.
 * <ul>
 * <li>compareStrategy?null?????compareStrategy?</li>
 * <li>compareStrategy?null????????????
 * <ul>
 * <li>?Comparable????Comparable#compareTo?
 * <li>?Class??????????Object#equals?
 * <li>2????org.apache.commons.lang.builder.EqualsBuilder#reflectionEquals?
 * </ul>
 * </li>
 * </ul>
 * </li>
 * <li>??null?????????.</li>
 * <li>??????null???????????.</li>
 * </ul>
 * @param value1 Object 
 * @param value2 Object 
 * @param compareStrategy CompareStrategy
 * @return ???:true / ???????:false
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
protected static boolean equalsObjects(Object value1, Object value2, CompareStrategy compareStrategy) {

    if (value1 != null && value2 != null) {
        // value1,value2?????????
        if (compareStrategy != null) {
            return compareStrategy.equalsObjects(value1, value2);
        } else {
            Class<? extends Object> clazz = value1.getClass();

            if (value1 instanceof Comparable) {
                // value1?Comparable?????compareTo??
                return (((Comparable) value1).compareTo(value2) == 0);
            } else if (clazz.isAssignableFrom(Class.class)) {
                // value1?Class?????????Object#equals??
                return value1.equals(value2);
            } else {
                // ?????reflectionEquals??
                return EqualsBuilder.reflectionEquals(value1, value2);
            }
        }
    } else if (value1 == null && value2 == null) {
        // value1,value2???????????
        return true;
    }
    // value1,value2??????????
    return false;

}

---

From source file:adalid.commons.util.TimeUtils.java

public static java.util.Date toJavaDate(Object object, Class<? extends java.util.Date> targetClass) {
    if (object == null) {
        return null;
    }/*from ww  w.  ja  v a2  s  .c om*/
    Class<?> sourceClass = object.getClass();
    if (targetClass == null || targetClass.isAssignableFrom(sourceClass)) {
        return (java.util.Date) object;
    } else if (targetClass.equals(Date.class)) {
        return toDate(object);
    } else if (targetClass.equals(Time.class)) {
        return toTime(object);
    } else if (targetClass.equals(Timestamp.class)) {
        return toTimestamp(object);
    } else {
        return (java.util.Date) object;
    }
}

---

From source file:com.evolveum.midpoint.test.util.MidPointAsserts.java

public static <F extends FocusType> void assertAssignments(PrismObject<F> user, Class expectedType,
        int expectedNumber) {
    F userType = user.asObjectable();//from  w w w .j  a v  a2s  .  c  o  m
    int actualAssignments = 0;
    List<AssignmentType> assignments = userType.getAssignment();
    for (AssignmentType assignment : assignments) {
        ObjectReferenceType targetRef = assignment.getTargetRef();
        if (targetRef != null) {
            QName type = targetRef.getType();
            if (type != null) {
                Class<? extends ObjectType> assignmentTargetClass = ObjectTypes.getObjectTypeFromTypeQName(type)
                        .getClassDefinition();
                if (expectedType.isAssignableFrom(assignmentTargetClass)) {
                    actualAssignments++;
                }
            }
        }
    }
    assertEquals("Unexepected number of assignments of type " + expectedType + " in " + user + ": "
            + userType.getAssignment(), expectedNumber, actualAssignments);
}

---

From source file:com.evolveum.midpoint.schema.util.WfContextUtil.java

public static <T extends WorkItemEventType> List<T> getWorkItemEvents(@NotNull WfContextType wfc,
        @NotNull String workItemId, Class<T> clazz) {
    return wfc.getEvent().stream()
            .filter(e -> clazz.isAssignableFrom(e.getClass())
                    && workItemId.equals(((WorkItemEventType) e).getExternalWorkItemId()))
            .map(e -> (T) e).collect(Collectors.toList());
}

---

From source file:adalid.core.XS1.java

static boolean checkFieldAnnotation(boolean log, Field field, Class<? extends Annotation> annotation,
        Class<?>[] validTypes) {
    String name = field.getName();
    Class<?> type = field.getDeclaringClass();
    String string;//ww  w . ja va  2  s  . c o m
    int modifiers = field.getModifiers();
    if (Modifier.isStatic(modifiers) || Modifier.isFinal(modifiers)) {
        string = "field " + name + " has static and/or final modifier";
        if (log) {
            logFieldAnnotationErrorMessage(name, type, annotation, string);
        }
        return false;
    }
    int length = validTypes == null ? 0 : validTypes.length;
    if (length < 1) {
        return true;
    }
    Class<?> ft = getTrueType(field.getType());
    String[] strings = new String[length];
    int i = 0;
    for (Class<?> vt : validTypes) {
        if (vt.isAssignableFrom(ft)) {
            return true;
        }
        strings[i++] = vt.getSimpleName();
    }
    string = "type of " + name + " is not " + StringUtils.join(strings, " or ");
    if (log) {
        logFieldAnnotationErrorMessage(name, type, annotation, string);
    }
    return false;
}

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