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:com.googlecode.psiprobe.tools.logging.slf4jlogback.TomcatSlf4jLogbackFactoryAccessor.java

/**
 * Attempts to initialize a TomcatSlf4jLogback logger factory via the given class loader.
 * //www . j  av  a  2 s. com
 * @param cl the ClassLoader to use when fetching the factory
 */
public TomcatSlf4jLogbackFactoryAccessor(ClassLoader cl) throws ClassNotFoundException, IllegalAccessException,
        IllegalArgumentException, InvocationTargetException {

    // Get the singleton SLF4J binding, which may or may not be Logback, depending on the binding.
    Class clazz = cl.loadClass("org.apache.juli.logging.org.slf4j.impl.StaticLoggerBinder");
    Method getSingleton = MethodUtils.getAccessibleMethod(clazz, "getSingleton", new Class[] {});
    Object singleton = getSingleton.invoke(null, null);
    Method getLoggerFactory = MethodUtils.getAccessibleMethod(clazz, "getLoggerFactory", new Class[] {});

    Object loggerFactory = getLoggerFactory.invoke(singleton, null);

    // Check if the binding is indeed Logback
    Class loggerFactoryClass = cl.loadClass("org.apache.juli.logging.ch.qos.logback.classic.LoggerContext");
    if (!loggerFactoryClass.isInstance(loggerFactory)) {
        throw new RuntimeException("The singleton SLF4J binding was not Logback");
    }
    setTarget(loggerFactory);
}

From source file:hudson.model.Actionable.java

/**
 * Gets all actions of a specified type that contributed to this build.
 *
 * @param type The type of action to return.
 * @return/*  w  w  w  .  j  ava 2 s . c  o  m*/
 *      may be empty but never null.
 * @see #getAction(Class)
 */
public <T extends Action> List<T> getActions(Class<T> type) {
    List<T> result = new Vector<T>();
    for (Action a : getActions())
        if (type.isInstance(a))
            result.add(type.cast(a));
    return result;
}

From source file:com.clustercontrol.view.CommonViewPart.java

/**
 * ????????????//from w  w  w  .j  a  v  a 2  s  .co  m
 * 
 * @return ?
 * @see org.eclipse.core.runtime.IAdaptable#getAdapter(java.lang.Class)
 * @since 1.0.0
 */
@SuppressWarnings("unchecked")
@Override
public Object getAdapter(@SuppressWarnings("rawtypes") Class cls) {
    if (cls.isInstance(this)) {
        return this;
    } else {
        return super.getAdapter(cls);
    }
}

From source file:com.jivesoftware.os.routing.bird.http.client.HttpClientFactoryProvider.java

@SuppressWarnings("unchecked")
private <T> T locateConfig(Collection<HttpClientConfiguration> configurations, Class<? extends T> _class,
        T defaultConfiguration) {/*from w  w  w.  ja v  a2s.  c  om*/
    for (HttpClientConfiguration configuration : configurations) {
        if (_class.isInstance(configuration)) {
            return (T) configuration;
        }
    }
    return defaultConfiguration;
}

From source file:org.apache.taverna.scufl2.rdfxml.ParserState.java

public <T extends WorkflowBean> T getCurrent(Class<T> beanType) {
    if (getStack().isEmpty())
        throw new IllegalStateException("Parser stack is empty");
    if (beanType.isInstance(getStack().peek()))
        return beanType.cast(getStack().peek());
    T candidate = null;/*from w  w w  . java 2s  .c o m*/
    for (WorkflowBean bean : getStack())
        if (beanType.isInstance(bean))
            // Don't return - we want the *last* candidate
            candidate = beanType.cast(bean);
    if (candidate == null)
        throw new IllegalStateException("Could not find a " + beanType + " on parser stack");
    return candidate;
}

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

public void check(Dataset data, Class clazz, int plotType) throws IncompatibleDatasetException {
    if (!clazz.isInstance(data)) {
        throw new IncompatibleDatasetException("Plots of type " + PlotTypes.typeNames[plotType]
                + " need a dataset of type " + clazz.getName());
    }//from   w w w .j  av  a2s .  com
}

From source file:org.biopax.validator.rules.UnificationXrefLimitedRule.java

public void check(final Validation validation, UnificationXref x) {
    if (!ready)//from  w ww .  j  ava  2 s. c  om
        initInternalMaps();

    if (x.getDb() == null || helper.getPrimaryDbName(x.getDb()) == null) {
        // ignore for unknown databases (another rule checks)
        return;
    }

    // fix case sensitivity
    final String xdb = helper.dbName(x.getDb());

    // check constrains for each element containing this unification xref 
    for (XReferrable bpe : x.getXrefOf()) {
        for (Class<? extends BioPAXElement> c : allow.keySet()) {
            if (c.isInstance(bpe)) {
                if (!allow.get(c).contains(xdb)) {
                    error(validation, x, "not.allowed.xref", false, x.getDb(), bpe, c.getSimpleName(),
                            allow.get(c).toString());
                }
            }
        }
        for (Class<? extends BioPAXElement> c : deny.keySet()) {
            if (c.isInstance(bpe)) {
                if (deny.get(c).contains(xdb)) {
                    error(validation, x, "denied.xref", false, x.getDb(), bpe, c.getSimpleName(),
                            deny.get(c).toString());
                }
            }
        }
    }
}

From source file:moe.encode.airblock.commands.core.components.ComponentBag.java

/**
 * Checks if the given interface is implemented by the component holder
 * @param interfaceCls The interface that should be implemented.
 * @return {@code true} if the given interface has been implemented.
 */// ww w . j ava2  s.  c o m
public boolean isImplemented(@NonNull Class<?> interfaceCls, @NonNull HandleWrapper<?> wrapper) {
    return interfaceCls.isInstance(wrapper.getHandle()) || this.methods.containsKey(interfaceCls);
}

From source file:grails.plugin.cache.GrailsConcurrentLinkedMapCache.java

@Override
public <T> T get(Object key, Class<T> type) {
    Object value = getNativeCache().get(key);
    if (value != null && type != null && !type.isInstance(value)) {
        throw new IllegalStateException(
                "Cached value is not of required type [" + type.getName() + "]: " + value);
    }/*w w  w . ja v  a  2s .co  m*/
    return (T) value;
}

From source file:rmblworx.tools.timey.AlarmEventsTest.java

/**
 * Stellt sicher, dass das Element <code>item</code> von einem der in <code>types</code> aufgefhrten Typen ist.
 * @param item Element//  w  ww  .j  av a2s .  c  o  m
 * @param types Typen
 */
protected final void assertIsOfOneType(final Object item, final Class<?>... types) {
    for (final Class<?> klass : types) {
        if (klass.isInstance(item)) {
            return;
        }
    }

    fail(String.format("%s ist vom unerwarteten Typ %s.", item, item.getClass()));
}