本文整理汇总了Java中org.apache.hadoop.conf.Configuration.getClasses方法的典型用法代码示例。如果您正苦于以下问题：Java Configuration.getClasses方法的具体用法？Java Configuration.getClasses怎么用？Java Configuration.getClasses使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.conf.Configuration的用法示例。
在下文中一共展示了Configuration.getClasses方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: getFilterInitializers
import org.apache.hadoop.conf.Configuration; //导入方法依赖的package包/类
/** Get an array of FilterConfiguration specified in the conf */
private static FilterInitializer[] getFilterInitializers(Configuration conf) {
if (conf == null) {
return null;
}
Class<?>[] classes = conf.getClasses(FILTER_INITIALIZER_PROPERTY);
if (classes == null) {
return null;
}
FilterInitializer[] initializers = new FilterInitializer[classes.length];
for(int i = 0; i < classes.length; i++) {
initializers[i] = (FilterInitializer)ReflectionUtils.newInstance(
classes[i], conf);
}
return initializers;
}
示例2: getFilterInitializers
import org.apache.hadoop.conf.Configuration; //导入方法依赖的package包/类
/** Get an array of FilterConfiguration specified in the conf */
private static FilterInitializer[] getFilterInitializers(Configuration conf) {
if (conf == null) {
return null;
}
Class<?>[] classes = conf.getClasses(FILTER_INITIALIZERS_PROPERTY);
if (classes == null) {
return null;
}
FilterInitializer[] initializers = new FilterInitializer[classes.length];
for(int i = 0; i < classes.length; i++) {
initializers[i] = (FilterInitializer)ReflectionUtils.newInstance(classes[i]);
}
return initializers;
}
示例3: getInstances
import org.apache.hadoop.conf.Configuration; //导入方法依赖的package包/类
/**
* Get the value of the <code>name</code> property as a <code>List</code>
* of objects implementing the interface specified by <code>xface</code>.
*
* An exception is thrown if any of the classes does not exist, or if it does
* not implement the named interface.
*
* @param name the property name.
* @param xface the interface implemented by the classes named by
* <code>name</code>.
* @return a <code>List</code> of objects implementing <code>xface</code>.
*/
@SuppressWarnings("unchecked")
public static <U> List<U> getInstances(Configuration conf,
String name, Class<U> xface) {
List<U> ret = new ArrayList<U>();
Class<?>[] classes = conf.getClasses(name);
for (Class<?> cl: classes) {
if (!xface.isAssignableFrom(cl)) {
throw new RuntimeException(cl + " does not implement " + xface);
}
ret.add((U) ReflectionUtils.newInstance(cl, conf));
}
return ret;
}
示例4: configure
import org.apache.hadoop.conf.Configuration; //导入方法依赖的package包/类
/**
* Configure the {@link ResourceUsageMatcher} to load the configured plugins
* and initialize them.
*/
@SuppressWarnings("unchecked")
public void configure(Configuration conf, ResourceCalculatorPlugin monitor,
ResourceUsageMetrics metrics, Progressive progress) {
Class[] plugins = conf.getClasses(RESOURCE_USAGE_EMULATION_PLUGINS);
if (plugins == null) {
System.out.println("No resource usage emulator plugins configured.");
} else {
for (Class clazz : plugins) {
if (clazz != null) {
if (ResourceUsageEmulatorPlugin.class.isAssignableFrom(clazz)) {
ResourceUsageEmulatorPlugin plugin =
(ResourceUsageEmulatorPlugin) ReflectionUtils.newInstance(clazz,
conf);
emulationPlugins.add(plugin);
} else {
throw new RuntimeException("Misconfigured resource usage plugins. "
+ "Class " + clazz.getClass().getName() + " is not a resource "
+ "usage plugin as it does not extend "
+ ResourceUsageEmulatorPlugin.class.getName());
}
}
}
}
// initialize the emulators once all the configured emulator plugins are
// loaded
for (ResourceUsageEmulatorPlugin emulator : emulationPlugins) {
emulator.initialize(conf, metrics, monitor, progress);
}
}