• 设为首页
  • 点击收藏
  • 手机版
    手机扫一扫访问
    迪恩网络手机版
  • 关注官方公众号
    微信扫一扫关注
    迪恩网络公众号

Java RichInputFormat类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Java中org.apache.flink.api.common.io.RichInputFormat的典型用法代码示例。如果您正苦于以下问题:Java RichInputFormat类的具体用法?Java RichInputFormat怎么用?Java RichInputFormat使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



RichInputFormat类属于org.apache.flink.api.common.io包,在下文中一共展示了RichInputFormat类的5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,您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: executeDataSource

import org.apache.flink.api.common.io.RichInputFormat; //导入依赖的package包/类
private <OUT> List<OUT> executeDataSource(GenericDataSourceBase<?, ?> source, int superStep)
		throws Exception {
	@SuppressWarnings("unchecked")
	GenericDataSourceBase<OUT, ?> typedSource = (GenericDataSourceBase<OUT, ?>) source;
	// build the runtime context and compute broadcast variables, if necessary
	TaskInfo taskInfo = new TaskInfo(typedSource.getName(), 1, 0, 1, 0);
	
	RuntimeUDFContext ctx;

	MetricGroup metrics = new UnregisteredMetricsGroup();
	if (RichInputFormat.class.isAssignableFrom(typedSource.getUserCodeWrapper().getUserCodeClass())) {
		ctx = superStep == 0 ? new RuntimeUDFContext(taskInfo, classLoader, executionConfig, cachedFiles, accumulators, metrics) :
				new IterationRuntimeUDFContext(taskInfo, classLoader, executionConfig, cachedFiles, accumulators, metrics);
	} else {
		ctx = null;
	}
	return typedSource.executeOnCollections(ctx, executionConfig);
}
 
开发者ID:axbaretto,项目名称:flink,代码行数:19,代码来源:CollectionExecutor.java


示例2: executeOnCollections

import org.apache.flink.api.common.io.RichInputFormat; //导入依赖的package包/类
protected List<OUT> executeOnCollections(RuntimeContext ctx, ExecutionConfig executionConfig) throws Exception {
	@SuppressWarnings("unchecked")
	InputFormat<OUT, InputSplit> inputFormat = (InputFormat<OUT, InputSplit>) this.formatWrapper.getUserCodeObject();
	//configure the input format
	inputFormat.configure(this.parameters);

	//open the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).setRuntimeContext(ctx);
		((RichInputFormat) inputFormat).openInputFormat();
	}

	List<OUT> result = new ArrayList<OUT>();
	
	// splits
	InputSplit[] splits = inputFormat.createInputSplits(1);
	TypeSerializer<OUT> serializer = getOperatorInfo().getOutputType().createSerializer(executionConfig);
	
	for (InputSplit split : splits) {
		inputFormat.open(split);
		
		while (!inputFormat.reachedEnd()) {
			OUT next = inputFormat.nextRecord(serializer.createInstance());
			if (next != null) {
				result.add(serializer.copy(next));
			}
		}
		
		inputFormat.close();
	}
	
	//close the input format
	if (inputFormat instanceof RichInputFormat) {
		((RichInputFormat) inputFormat).closeInputFormat();
	}

	return result;
}
 
开发者ID:axbaretto,项目名称:flink,代码行数:39,代码来源:GenericDataSourceBase.java


示例3: open

import org.apache.flink.api.common.io.RichInputFormat; //导入依赖的package包/类
@Override
@SuppressWarnings("unchecked")
public void open(Configuration parameters) throws Exception {
	StreamingRuntimeContext context = (StreamingRuntimeContext) getRuntimeContext();

	if (format instanceof RichInputFormat) {
		((RichInputFormat) format).setRuntimeContext(context);
	}
	format.configure(parameters);

	provider = context.getInputSplitProvider();
	serializer = typeInfo.createSerializer(getRuntimeContext().getExecutionConfig());
	splitIterator = getInputSplits();
	isRunning = splitIterator.hasNext();
}
 
开发者ID:axbaretto,项目名称:flink,代码行数:16,代码来源:InputFormatSourceFunction.java


示例4: run

import org.apache.flink.api.common.io.RichInputFormat; //导入依赖的package包/类
@Override
public void run(SourceContext<OUT> ctx) throws Exception {
	try {

		Counter completedSplitsCounter = getRuntimeContext().getMetricGroup().counter("numSplitsProcessed");
		if (isRunning && format instanceof RichInputFormat) {
			((RichInputFormat) format).openInputFormat();
		}

		OUT nextElement = serializer.createInstance();
		while (isRunning) {
			format.open(splitIterator.next());

			// for each element we also check if cancel
			// was called by checking the isRunning flag

			while (isRunning && !format.reachedEnd()) {
				nextElement = format.nextRecord(nextElement);
				if (nextElement != null) {
					ctx.collect(nextElement);
				} else {
					break;
				}
			}
			format.close();
			completedSplitsCounter.inc();

			if (isRunning) {
				isRunning = splitIterator.hasNext();
			}
		}
	} finally {
		format.close();
		if (format instanceof RichInputFormat) {
			((RichInputFormat) format).closeInputFormat();
		}
		isRunning = false;
	}
}
 
开发者ID:axbaretto,项目名称:flink,代码行数:40,代码来源:InputFormatSourceFunction.java


示例5: close

import org.apache.flink.api.common.io.RichInputFormat; //导入依赖的package包/类
@Override
public void close() throws Exception {
	format.close();
	if (format instanceof RichInputFormat) {
		((RichInputFormat) format).closeInputFormat();
	}
}
 
开发者ID:axbaretto,项目名称:flink,代码行数:8,代码来源:InputFormatSourceFunction.java



注:本文中的org.apache.flink.api.common.io.RichInputFormat类示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


鲜花

握手

雷人

路过

鸡蛋
该文章已有0人参与评论

请发表评论

全部评论

专题导读
上一篇:
Java Session类代码示例发布时间:2022-05-22
下一篇:
Java IDocumentProviderExtension类代码示例发布时间:2022-05-22
热门推荐
阅读排行榜

扫描微信二维码

查看手机版网站

随时了解更新最新资讯

139-2527-9053

在线客服(服务时间 9:00~18:00)

在线QQ客服
地址:深圳市南山区西丽大学城创智工业园
电邮:jeky_zhao#qq.com
移动电话:139-2527-9053

Powered by 互联科技 X3.4© 2001-2213 极客世界.|Sitemap