Java U.hasAnnotation方法代码示例

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @param cls Class to deploy.
 * @param clsLdr Class loader.
 * @throws IgniteCheckedException If deployment failed.
 * @return Grid deployment.
 */
@Nullable public GridDeployment deploy(Class<?> cls, ClassLoader clsLdr) throws IgniteCheckedException {
    if (clsLdr == null)
        clsLdr = getClass().getClassLoader();

    String clsName = cls.getName();

    String lambdaParent = U.lambdaEnclosingClassName(clsName);

    if (lambdaParent != null) {
        clsName = lambdaParent;

        // Need to override passed in class if class is Lambda.
        try {
            cls = Class.forName(clsName, true, clsLdr);
        }
        catch (ClassNotFoundException e) {
            throw new IgniteCheckedException("Cannot deploy parent class for lambda: " + clsName, e);
        }
    }

    if (clsLdr instanceof GridDeploymentClassLoader) {
        GridDeploymentInfo ldr = (GridDeploymentInfo)clsLdr;

        // Expecting that peer-deploy awareness handled on upper level.
        if ((ldr.deployMode() == ISOLATED || ldr.deployMode() == PRIVATE) &&
            (ctx.config().getDeploymentMode() == SHARED || ctx.config().getDeploymentMode() == CONTINUOUS) &&
            !U.hasAnnotation(cls, GridInternal.class))
            throw new IgniteCheckedException("Attempt to deploy class loaded in ISOLATED or PRIVATE mode on node with " +
                "SHARED or CONTINUOUS deployment mode [cls=" + cls + ", clsDeployMode=" + ldr.deployMode() +
                ", localDeployMode=" + ctx.config().getDeploymentMode() + ']');

        GridDeploymentMetadata meta = new GridDeploymentMetadata();

        meta.alias(clsName);
        meta.classLoader(clsLdr);

        // Check for nested execution. In that case, if task
        // is available locally by name, then we should ignore
        // class loader ID.
        GridDeployment dep = locStore.getDeployment(meta);

        if (dep == null) {
            dep = ldrStore.getDeployment(ldr.classLoaderId());

            if (dep == null)
                dep = verStore.getDeployment(ldr.classLoaderId());
        }

        return dep;
    }
    else if (locDep != null) {
        if (ComputeTask.class.isAssignableFrom(cls)) {
            ComputeTaskName taskNameAnn = locDep.annotation(cls, ComputeTaskName.class);

            if (taskNameAnn != null)
                locDep.addDeployedClass(cls, taskNameAnn.value());
        }

        return locDep;
    }
    else
        return locStore.explicitDeploy(cls, clsLdr);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @return {@code True} if affinity function has {@link AffinityCentralizedFunction} annotation.
 */
public boolean centralizedAffinityFunction() {
    return U.hasAnnotation(aff, AffinityCentralizedFunction.class);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @return {@code True} if listener should be executed in non-system thread.
 */
protected boolean async() {
    return U.hasAnnotation(impl, IgniteAsyncCallback.class);
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/** {@inheritDoc} */
@SuppressWarnings("unchecked")
@Override public void initialize(@Nullable CacheStore cfgStore, Map sesHolders) throws IgniteCheckedException {
    GridKernalContext ctx = igniteContext();
    CacheConfiguration cfg = cacheConfiguration();

    writeThrough = cfg.isWriteThrough();

    readThrough = cfg.isReadThrough();

    this.cfgStore = cfgStore;

    store = cacheStoreWrapper(ctx, cfgStore, cfg);

    singleThreadGate = store == null ? null : new CacheStoreBalancingWrapper<>(store,
        cfg.getStoreConcurrentLoadAllThreshold());

    ThreadLocal<SessionData> sesHolder0 = null;

    if (cfgStore != null) {
        sesHolder0 = ((Map<CacheStore, ThreadLocal>)sesHolders).get(cfgStore);

        if (sesHolder0 == null) {
            sesHolder0 = new ThreadLocal<>();

            locSes = new ThreadLocalSession(sesHolder0);

            if (ctx.resource().injectStoreSession(cfgStore, locSes))
                sesHolders.put(cfgStore, sesHolder0);
        }
        else
            locSes = new ThreadLocalSession(sesHolder0);
    }

    sesHolder = sesHolder0;

    locStore = U.hasAnnotation(cfgStore, CacheLocalStore.class);

    if (cfgStore instanceof CacheJdbcPojoStore)
        alwaysKeepBinary = true;
}
 

import org.apache.ignite.internal.util.typedef.internal.U; //导入方法依赖的package包/类
/**
 * @param comp Grid component.
 * @return {@code true} if node running in daemon mode and component marked by {@code SkipDaemon} annotation.
 */
private boolean skipDaemon(GridComponent comp) {
    return ctx.isDaemon() && U.hasAnnotation(comp.getClass(), SkipDaemon.class);
}