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:Main.java

public static List<Field> getAllFieldsOfType(List<Field> fields, Class<?> type, Class<?> fieldType) {
    for (Field field : type.getDeclaredFields()) {
        if (fieldType == null || fieldType.isAssignableFrom(field.getType())) {
            fields.add(field);//from   w  w w  .  j av  a  2s  .  com
        }
    }

    if (type.getSuperclass() != null) {
        fields = getAllFieldsOfType(fields, type.getSuperclass(), fieldType);
    }

    return fields;
}

From source file:org.eumetsat.metop.visat.AmsuInfoView.java

private static <T extends Layer> T getLayer(Layer parentLayer, Class<T> layerClass) {
    if (layerClass.isAssignableFrom(parentLayer.getClass())) {
        return (T) parentLayer;
    }/*from www  . j  a v  a  2 s  . com*/
    for (final Layer childLayer : parentLayer.getChildren()) {
        final T layer = getLayer(childLayer, layerClass);
        if (layer != null) {
            return layer;
        }
    }
    return null;
}

From source file:org.lightadmin.core.config.domain.common.AbstractFieldSetConfigurationBuilder.java

protected static void assertFieldMetadataType(FieldMetadata currentFieldMetadata, Class<?> type) {
    if (currentFieldMetadata == null || !type.isAssignableFrom(currentFieldMetadata.getClass())) {
        throw new RuntimeException("Field is not defined or wrong type.");
    }//from w w w.j av a 2s . co m
}

From source file:Main.java

public static Object[] getArray(Object val) {
    Class<?> valKlass = val.getClass();
    Object[] outputArray = null;//from ww  w.j a  v a 2s . co m
    for (Class<?> arrKlass : ARRAY_PRIMITIVE_TYPES) {
        if (valKlass.isAssignableFrom(arrKlass)) {
            int arrlength = Array.getLength(val);
            outputArray = new Object[arrlength];
            for (int i = 0; i < arrlength; ++i) {
                outputArray[i] = Array.get(val, i);
            }
            break;
        }
    }
    if (outputArray == null) // not primitive type array
        outputArray = (Object[]) val;
    return outputArray;
}

From source file:shiver.me.timbers.spring.security.modification.SecurityFilterChainModifier.java

private static int findFirstIndexOf(Class<? extends Filter> filterClass, List<Filter> filters) {
    for (int i = 0; i < filters.size(); i++) {
        if (filterClass.isAssignableFrom(filters.get(i).getClass())) {
            return i;
        }/*from   w w w .  ja  v a  2  s  .c o m*/
    }
    return -1;
}

From source file:Main.java

private static boolean isListenerRegistered(Object[] objects, Class t, EventListener l) {
    for (int i = 0; i < objects.length; i++) {
        Object listener = objects[i];

        if (t.isAssignableFrom(listener.getClass()) && (listener == l)) {
            return true;
        }//from   w  w w. j  a v  a 2  s.co  m
    }

    return false;
}

From source file:Main.java

public static ParameterizedType resolveParameterizedType(Type t, Class<?> baseClass) {
    Class<?> raw = getRawType(t);

    if (t instanceof ParameterizedType && baseClass.isAssignableFrom(raw)) {
        return (ParameterizedType) t;
    }/*from w  ww  .j av a  2  s .c  o m*/

    ParameterizedType pt = null;
    if (raw.getSuperclass() != null && raw.getSuperclass() != Object.class) {
        pt = resolveParameterizedType(raw.getGenericSuperclass(), baseClass);
        if (pt != null)
            return pt;
    }
    if (!raw.isInterface()) {
        for (Type ifs : raw.getGenericInterfaces()) {
            pt = resolveParameterizedType(ifs, baseClass);
            if (pt != null)
                return pt;
        }
    }
    return null;
}

From source file:hudson.maven.settings.SettingsProviderUtils.java

/**
 * utility method to retrieve Config of type (MavenSettingsProvider etc..)
 * /*from  w w  w.  j  av a 2s. co  m*/
 * @param settingsConfigId
 * @param type
 * @return Config
 */
public static Config findConfig(String settingsConfigId, Class<?>... types) {
    ExtensionList<ConfigProvider> configProviders = ConfigProvider.all();
    if (configProviders != null && configProviders.size() > 0) {
        for (ConfigProvider configProvider : configProviders) {
            for (Class<?> type : types) {

                if (type.isAssignableFrom(configProvider.getClass())) {
                    if (configProvider.isResponsibleFor(settingsConfigId)) {
                        return configProvider.getConfigById(settingsConfigId);
                    }
                }

            }
        }
    }
    return null;
}

From source file:Main.java

public static <X extends View> X getChild(ViewGroup row, Class<X> klass) {
    assert klass != null;
    for (int i = 0; i < row.getChildCount(); i++) {
        View child = row.getChildAt(i);
        if (klass.isAssignableFrom(child.getClass())) {
            return klass.cast(child);
        }/*from   w w  w . jav  a2  s .  com*/

        if (child instanceof ViewGroup) {
            X kid = getChild((ViewGroup) child, klass);
            if (kid != null)
                return kid;
        }
    }
    // fail
    return null;
}

From source file:info.magnolia.cms.util.ExceptionUtil.java

/**
 * Returns true if the given exception or any of the nested cause exceptions is an instance of the <tt>suspectedCause</tt> exception argument, or a subclass thereof.
 * This is equivalent to ExceptionUtils.indexOfThrowable(e, javax.jcr.AccessDeniedException.class) >= 0, only more readable, and possibly more performant.
 *//*from ww  w .j  ava2  s  .c  o  m*/
public static boolean wasCausedBy(Throwable e, Class<? extends Throwable> suspectedCause) {
    if (e != null && suspectedCause.isAssignableFrom(e.getClass())) {
        return true;
    } else if (e == null) {
        return false;
    } else {
        return wasCausedBy(e.getCause(), suspectedCause);
    }
}