Example usage for java.lang Class isInstance

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public native boolean isInstance(Object obj);

Source Link

Document

Determines if the specified Object is assignment-compatible with the object represented by this Class .

Usage

From source file:me.j360.dubbo.modules.util.base.ExceptionUtil.java

/**
 * ??.//from  w  w w.ja  v  a2s  . c o  m
 */
@SuppressWarnings("unchecked")
public static boolean isCausedBy(Throwable t, Class<? extends Exception>... causeExceptionClasses) {
    Throwable cause = t;

    while (cause != null) {
        for (Class<? extends Exception> causeClass : causeExceptionClasses) {
            if (causeClass.isInstance(cause)) {
                return true;
            }
        }
        cause = cause.getCause();
    }
    return false;
}

From source file:com.bluexml.side.build.tools.graph.jung.algorithms.GraphFilter.java

public static boolean testClassName(Object o, String name) {
    Class<?> forName;
    try {/* w w w .  ja v a 2s  .  co m*/
        forName = Class.forName("com.bluexml.side.build.tools.componants." + name);
        return forName.isInstance(o);
    } catch (ClassNotFoundException e) {
        logger.error(e.getMessage(), e);
    }
    return false;
}

From source file:io.fabric8.devops.ProjectConfigs.java

/**
 * Configures the given {@link ProjectConfig} with a map of key value pairs from
 * something like a JBoss Forge command/*from ww w.j a  v  a2 s. co  m*/
 */
public static void configureProperties(ProjectConfig config, Map map) {
    Class<? extends ProjectConfig> clazz = config.getClass();
    BeanInfo beanInfo = null;
    try {
        beanInfo = Introspector.getBeanInfo(clazz);
    } catch (IntrospectionException e) {
        LOG.warn("Could not introspect " + clazz.getName() + ". " + e, e);
    }
    if (beanInfo != null) {
        PropertyDescriptor[] propertyDescriptors = beanInfo.getPropertyDescriptors();
        for (PropertyDescriptor descriptor : propertyDescriptors) {
            Method writeMethod = descriptor.getWriteMethod();
            if (writeMethod != null) {
                String name = descriptor.getName();
                Object value = map.get(name);
                if (value != null) {
                    Object safeValue = null;
                    Class<?> propertyType = descriptor.getPropertyType();
                    if (propertyType.isInstance(value)) {
                        safeValue = value;
                    } else {
                        PropertyEditor editor = descriptor.createPropertyEditor(config);
                        if (editor == null) {
                            editor = PropertyEditorManager.findEditor(propertyType);
                        }
                        if (editor != null) {
                            String text = value.toString();
                            editor.setAsText(text);
                            safeValue = editor.getValue();
                        } else {
                            LOG.warn("Cannot update property " + name + " with value " + value + " of type "
                                    + propertyType.getName() + " on " + clazz.getName());
                        }
                    }
                    if (safeValue != null) {
                        try {
                            writeMethod.invoke(config, safeValue);
                        } catch (Exception e) {
                            LOG.warn("Failed to set property " + name + " with value " + value + " on "
                                    + clazz.getName() + " " + config + ". " + e, e);
                        }

                    }
                }
            }
        }
    }
    String flow = null;
    Object flowValue = map.get("pipeline");
    if (flowValue == null) {
        flowValue = map.get("flow");
    }
    if (flowValue != null) {
        flow = flowValue.toString();
    }
    config.setPipeline(flow);
}

From source file:de.laures.cewolf.taglib.CewolfChartFactory.java

/**
 * Helper to check if the given dataset is the expected type.
 * @param data The dataset//from  w  ww.j a v a2s . c o m
 * @param clazz Expected type (class)
 * @param chartType The chart type string
 * @throws IncompatibleDatasetException If not the expected class
 */
public static void check(Dataset data, Class clazz, String chartType) throws IncompatibleDatasetException {
    if (!clazz.isInstance(data)) {
        throw new IncompatibleDatasetException(
                "Charts of type " + chartType + " " + "need datasets of type " + clazz.getName());
    }
}

From source file:com.vmware.admiral.compute.container.volume.VolumeUtil.java

private static <T extends ResourceState> Map<String, T> filterDescriptions(Class<T> clazz,
        Collection<ComponentDescription> componentDescriptions) {

    return componentDescriptions.stream().filter(cd -> clazz.isInstance(cd.getServiceDocument()))
            .map(cd -> clazz.cast(cd.getServiceDocument())).collect(Collectors.toMap(c -> c.name, c -> c));
}

From source file:de.thorstenberger.taskmodel.complex.complextaskhandling.subtasklets.impl.SubTasklet_MCBuilder.java

/**
 * Return all instances of <code>clazz</code> from the given list.
 *
 * @param correctOrIncorrect/*from   w w  w.  j a v a  2  s  . c o m*/
 * @param clazz
 * @return
 */
static int[] getIndices(List correctOrIncorrect, Class<?> clazz) {
    List<Integer> selected = new ArrayList<Integer>();
    int idx = 0;
    for (Object o : correctOrIncorrect) {
        if (clazz.isInstance(o)) {
            selected.add(idx);
        }
        idx++;
    }
    return ArrayUtils.toPrimitive(selected.toArray(new Integer[selected.size()]));
}

From source file:cc.sion.core.utils.Exceptions.java

/**
 * ??.//from  www .  j  av  a2  s  .  co m
 */
public static boolean isCausedBy(Exception ex, Class<? extends Exception>... causeExceptionClasses) {
    Throwable cause = ex;
    while (cause != null) {
        for (Class<? extends Exception> causeClass : causeExceptionClasses) {
            if (causeClass.isInstance(cause)) {
                return true;
            }
        }
        cause = cause.getCause();
    }
    return false;
}

From source file:cc.sion.core.utils.Exceptions.java

/**
 * ??.//from  w ww.  j a v  a2 s  .  c om
 */
public static boolean isCausedBy(Throwable t, Class<? extends Exception>... causeExceptionClasses) {
    Throwable cause = t;

    while (cause != null) {
        for (Class<? extends Exception> causeClass : causeExceptionClasses) {
            if (causeClass.isInstance(cause)) {
                return true;
            }
        }
        cause = cause.getCause();
    }
    return false;
}

From source file:com.icesoft.faces.util.CoreUtils.java

public static boolean isPortletEnvironment() {
    if (portletEnvironment == null) {
        try {// w w w .  j av  a 2s.  c  o m
            Class portletRequestClass = Class.forName("javax.portlet.PortletRequest");
            portletEnvironment = new Boolean(portletRequestClass
                    .isInstance(FacesContext.getCurrentInstance().getExternalContext().getRequest()));
        } catch (Throwable e) {
            //both ClassNotFoundException and NoClassDefError
            //portlet not found
            portletEnvironment = Boolean.FALSE;
        }
    }
    return portletEnvironment.booleanValue();
}

From source file:com.excilys.ebi.bank.util.Asserts.java

public static void isInstanceOf(Class<?> type, Object obj, String messagePattern, Object arg) {
    notNull(type, "Type to check against must not be null");
    if (!type.isInstance(obj)) {
        throw new IllegalArgumentException(MessageFormatter.format(messagePattern, arg).getMessage()
                + " Object of class [" + (obj != null ? obj.getClass().getName() : "null")
                + "] must be an instance of " + type);
    }//from  ww  w .jav a  2s .  c  om
}