Example usage for org.apache.commons.discovery.tools SPInterface SPInterface

Introduction

In this page you can find the example usage for org.apache.commons.discovery.tools SPInterface SPInterface.

Prototype

public SPInterface(Class provider) 

Source Link

Document

Construct object representing Class provider.

Usage

From source file:org.apache.axis.AxisProperties.java

public static Object newInstance(Class spiClass, Class defaultClass) {
    return newInstance(new SPInterface(spiClass), new DefaultClassHolder(defaultClass));
}

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From source file:org.codehaus.cargo.generic.AbstractFactoryRegistry.java

/**
 * Lists up {@link AbstractFactoryRegistry}s that are discovered.
 * //from w  ww. j  av a2  s. c  o  m
 * @param classLoader See {@link #register(ClassLoader, DeployableFactory)} for more details.
 * @return always non-null but can be empty.
 */
private static List<AbstractFactoryRegistry> list(ClassLoader classLoader) {
    ClassLoader cl;
    ClassLoaders loaders = new ClassLoaders();

    cl = classLoader;
    if (cl != null) {
        loaders.put(cl);
    }

    cl = Thread.currentThread().getContextClassLoader();
    if (cl != null) {
        loaders.put(cl);
    }

    cl = AbstractFactoryRegistry.class.getClassLoader();
    if (cl != null) {
        loaders.put(cl);
    }

    cl = ResourceUtils.getResourceLoader();
    if (cl != null) {
        loaders.put(cl);
    }

    cl = JDKHooks.getJDKHooks().getSystemClassLoader();
    if (cl != null) {
        loaders.put(cl);
    }

    if (loaders.size() == 0) {
        // this is not our day. bail out.
        return Collections.EMPTY_LIST;
    }

    List<AbstractFactoryRegistry> registries = new ArrayList<AbstractFactoryRegistry>();
    Enumeration providers = Service.providers(new SPInterface(AbstractFactoryRegistry.class), loaders);
    while (providers.hasMoreElements()) {
        Object provider = providers.nextElement();
        if (provider instanceof AbstractFactoryRegistry) {
            registries.add((AbstractFactoryRegistry) provider);
        }
    }

    return registries;
}

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