本文整理汇总了Scala中com.github.tototoshi.csv.CSVReader类的典型用法代码示例。如果您正苦于以下问题:Scala CSVReader类的具体用法?Scala CSVReader怎么用?Scala CSVReader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。
在下文中一共展示了CSVReader类的9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Scala代码示例。
示例1: ResultWriter
//设置package包名称以及导入依赖的类
package org.hpi.esb.commons.output.writers
import java.io.File
import com.github.tototoshi.csv.CSVReader
import org.hpi.esb.commons.output.CSVOutput
import org.hpi.esb.commons.output.model.Result
import org.hpi.esb.commons.util.Logging
import scala.io.Source
abstract class ResultWriter(inputFilesPrefix: String, resultsPath: String,
outputFileName: String) extends Logging {
def execute(): Unit = {
val inputSources = getInputSources(resultsPath)
val table = createResultTable(inputSources)
writeResults(table, resultsPath, outputFileName)
}
def createResultTable(inputSources: List[Source]): List[List[String]] = {
val intermediateResultMaps = getIntermediateResultMaps(inputSources)
if (intermediateResultMaps.nonEmpty) {
val finalResult = getFinalResult(intermediateResultMaps)
finalResult.toTable()
} else {
logger.info("No benchmark series result files were found for merger.")
sys.exit(1)
}
}
def writeResults(mergedResults: List[List[String]], resultPath: String, fileName: String): Unit = {
CSVOutput.write(mergedResults, resultPath, fileName)
}
def getIntermediateResultMaps(sources: List[Source]): List[Map[String, String]] = {
val readers = sources.map(CSVReader.open)
readers.flatMap(r => r.allWithHeaders())
}
def getInputSources(resultsPath: String): List[Source] = {
val files = getListOfFiles(resultsPath)
val filteredFiles = filterFilesByPrefix(files, inputFilesPrefix)
filteredFiles.map(Source.fromFile)
}
def filterFilesByPrefix(files: List[File], prefix: String): List[File] = {
files.filter(_.getName.startsWith(prefix))
}
def getListOfFiles(dir: String): List[File] = {
val d = new File(dir)
if (d.exists && d.isDirectory) {
d.listFiles.filter(_.isFile).toList
} else {
List[File]()
}
}
def getFinalResult(runResultMaps: List[Map[String, String]]): Result
}
开发者ID:BenReissaus,项目名称:EnterpriseStreamingBenchmark,代码行数:62,代码来源:ResultWriter.scala
示例2: Data
//设置package包名称以及导入依赖的类
package task.airport
package data
import java.net.URL
import akka.NotUsed
import akka.stream.scaladsl.Source
import com.github.tototoshi.csv.CSVReader
import task.airport.model.{Airport, Country, Runway}
import scala.io.{Source => IOSource}
import scala.util.{Failure, Success, Try}
object Data {
private val log = Logging logger getClass
lazy val countries: Source[Country, NotUsed] =
source(resources.countriesCSV)(Parser.country)
lazy val airports: Source[Airport, NotUsed] =
source(resources.airportsCSV)(Parser.airport)
lazy val runways: Source[Runway, NotUsed] =
source(resources.runwaysCSV)(Parser.runway)
private def source[T](url: URL)(parse: Seq[String] => T): Source[T, NotUsed] =
Source
.fromIterator { () =>
val source = IOSource fromURL url
val reader = CSVReader open source
val iterator = reader.iterator
iterator
}
.drop(1)
.map { row =>
Try {
parse(row)
} match {
case Success(value) =>
value
case Failure(exception) =>
// It might be dangerous to log the CSV row.
log.warn(s"Failed to parse: $row")
throw exception
}
}
}
开发者ID:rarrabi,项目名称:task-airport,代码行数:50,代码来源:Data.scala
示例3: BatchService
//设置package包名称以及导入依赖的类
package sug.batchservice
import java.io.File
import com.github.tototoshi.csv.CSVReader
import com.typesafe.scalalogging.StrictLogging
import org.apache.commons.io.monitor.{FileAlterationListenerAdaptor, FileAlterationMonitor, FileAlterationObserver}
object BatchService extends App with StrictLogging {
def processor(person: Person): Person = person match {
case Person(fn, ln) => Person(fn.toUpperCase,ln.toUpperCase)
}
case class Person(firstName: String, lastName: String) {
override def toString: String = s"firstName: $firstName lastName: $lastName"
}
def monitor(directory: String, interval: Long = 1000) = {
val m = new FileAlterationMonitor(interval)
val o = new FileAlterationObserver(directory)
m.addObserver(o)
m.start()
val l = new FileAlterationListenerAdaptor {
override def onFileChange(file: File): Unit = {
logger.info(s"File changed ${file.getName}.")
//TODO
}
}
o.addListener(l)
}
def reader(absolutePath: String): List[List[String]] = {
val reader = CSVReader.open(new File(absolutePath))
val rows = reader.all()
logger.info(s"Read ${rows.size} row.")
rows.map(_.map(_.trim))
}
def converter(raw: List[String]): Either[List[String], Person] = raw match {
case firstName :: lastName :: Nil if lastName.nonEmpty && firstName.nonEmpty =>
Right(Person(firstName, lastName))
case row => Left(row)
}
def errorWriter(err: List[String]): Unit =
logger.info(s"Err: $err")
def okWriter(person: Person): Unit =
logger.info(s"Writer: $person")
}
开发者ID:mateuszjancy,项目名称:IntroToRxScala,代码行数:54,代码来源:BatchService.scala
示例4: LocalDataRepo
//设置package包名称以及导入依赖的类
package util
import java.io.{BufferedWriter, File, FileOutputStream, FileWriter}
import java.nio.file.{Files, Paths}
import com.github.tototoshi.csv.{CSVReader, CSVWriter, DefaultCSVFormat}
import com.google.inject.Singleton
import scala.io.Source
@Singleton
class LocalDataRepo extends BaseDataRepo {
class CSVFormat(_delimiter: Char) extends DefaultCSVFormat {
override val delimiter: Char = _delimiter
}
override def read(filePath: String): Array[Byte] = {
Files.readAllBytes(Paths.get(filePath))
}
override def readCsv(filePath: String, delimiter: Char): Seq[Seq[String]] = {
CSVReader.open(new File(filePath))(new CSVFormat(delimiter)).all()
}
override def readCsvAsMap(filePath: String, delimiter: Char): Seq[Map[String, String]] = {
CSVReader.open(new File(filePath))(new CSVFormat(delimiter)).allWithHeaders()
}
override def readLines(filePath: String): Seq[String] = {
Source.fromFile(filePath).getLines().toList
}
override def write(data: Array[Byte], filePath: String): Unit = {
new FileOutputStream(new File(filePath)).write(data)
}
override def writeCsv(data: Seq[Seq[Any]], filePath: String, delimiter: Char): Unit = {
CSVWriter.open(new File(filePath))(new CSVFormat(delimiter)).writeAll(data)
}
override def writeLines(data: Seq[String], filePath: String): Unit = {
new BufferedWriter(new FileWriter(filePath)).write(data.mkString(scala.util.Properties.lineSeparator))
}
}
开发者ID:davidheryanto,项目名称:play-with-guice-in-scala-crude-example,代码行数:47,代码来源:LocalDataRepo.scala
示例5: CsvLoader
//设置package包名称以及导入依赖的类
package com.miriamlaurel.aggro.csv.okcoin
import java.io.{File, FilenameFilter}
import java.time.{Instant, ZoneId}
import java.time.format.DateTimeFormatter
import java.time.temporal.TemporalAccessor
import java.util.UUID
import com.github.tototoshi.csv.CSVReader
import com.miriamlaurel.aggro.Inventory
import com.miriamlaurel.aggro.model.Fill
import com.miriamlaurel.fxcore._
import com.miriamlaurel.fxcore.asset.Currency
import com.miriamlaurel.fxcore.party.Party
import com.miriamlaurel.fxcore.portfolio.Position
object CsvLoader {
val oft = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss").withZone(ZoneId.of("Asia/Shanghai"))
def parseCsv(tokens: Seq[String]): Fill = {
val fillId = tokens.head.toLong
val id = tokens(1).toLong
val timeString: String = tokens(2)
val btcBalance = SafeDouble(tokens(5).split("/")(0).replaceAll(",", "").toDouble)
val cnyBalance = SafeDouble(tokens(7).replaceAll(",", "").toDouble)
val parsedTime: TemporalAccessor = oft.parse(timeString)
val ts = Instant.from(parsedTime)
try {
val btcStr = tokens(4).replaceAll(",", "")
val btcS = if (btcStr.startsWith("+")) btcStr.substring(1) else btcStr
val cnyStr = tokens(6).replaceAll(",", "")
val cnyS = if (cnyStr.startsWith("+")) cnyStr.substring(1) else cnyStr
val btc: Monetary = Monetary(SafeDouble(btcS.toDouble), Bitcoin)
val cny: Monetary = Monetary(SafeDouble(cnyS.toDouble), Currency("CNY"))
val position = Position(btc, cny, None, ts.toEpochMilli, UUID.randomUUID())
val inventory: Inventory = Map(Bitcoin -> btcBalance, Currency("CNY") -> cnyBalance)
Fill(Party("OKCN"), position, id.toString, Some(fillId.toString), Some(inventory))
} catch {
case x: Throwable =>
x.printStackTrace()
throw x
}
}
def loadFromCsv(dir: File): Array[Fill] = {
val files = dir.listFiles(new FilenameFilter {
override def accept(dir: File, name: String): Boolean = name.endsWith(".csv")
})
val data = for (file <- files) yield {
val reader = CSVReader.open(file)
val fills = reader.toStream.drop(1).filter(line => {
!line.head.startsWith("1024548491")
}).map(parseCsv).toArray
reader.close()
fills
}
data.flatten
}
}
开发者ID:atemerev,项目名称:aggro,代码行数:62,代码来源:CsvLoader.scala
示例6: TimeSeriesParser
//设置package包名称以及导入依赖的类
package funchisqwrapper.parsing
import java.io.File
import com.github.tototoshi.csv.{CSVReader, TSVFormat}
import funchisqwrapper.TimeSeriesTypes.{ContinuousProfile, ContinuousTimeSeries}
object TimeSeriesParser {
private val ID_LABEL = "id"
def parse(f: File): ContinuousTimeSeries = {
val format = new TSVFormat {}
val reader = CSVReader.open(f)(format)
val (headers, rows) = reader.allWithOrderedHeaders()
assert(headers.size > 1)
assert(headers.head == ID_LABEL)
val labels = headers.tail
val profiles = rows map { row =>
val id = row(ID_LABEL)
val values = labels map { l => row(l).toDouble }
ContinuousProfile(id, values)
}
ContinuousTimeSeries(profiles)
}
}
开发者ID:koksal,项目名称:funchisq-wrapper,代码行数:30,代码来源:TimeSeriesParser.scala
示例7: FileSystem
//设置package包名称以及导入依赖的类
package services
import java.io.File
import javax.inject._
import com.github.tototoshi.csv.{CSVReader, DefaultCSVFormat}
import play.api.{Configuration, Logger}
@Singleton
class FileSystem @Inject() (configuration: Configuration) {
val repodir = configuration.underlying.getString("importnow.dir")
val uploadsDir = new File(repodir + "/uploads")
uploadsDir.mkdirs()
Logger.info(s"Saving upload files to $uploadsDir")
def getUploads: List[String] = {
uploadsDir.list().toList.sorted
}
def uploadFile(filename: String, contentType: Option[String])(writeTo: File => Unit): Unit = {
val file = new File(uploadsDir, filename)
writeTo(file)
}
def fileHeaders(filename: String): Option[List[String]] = {
withCsvReader(filename) {
reader => reader.readNext()
}
}
def fileStream[T](filename: String)(streamFunction: Stream[Map[String, String]] => T): T = {
withCsvReader(filename) {
reader => streamFunction(reader.toStreamWithHeaders)
}
}
private def withCsvReader[T](filename: String)(function: CSVReader => T): T = {
val file = new File(uploadsDir, filename)
implicit object MyFormat extends DefaultCSVFormat {
override val delimiter = ';'
}
val reader = CSVReader.open(file)
val result = try {
function(reader)
} finally {
reader.close
}
result
}
}
开发者ID:jkransen,项目名称:importnow,代码行数:56,代码来源:FileSystem.scala
示例8: AnomalyApp
//设置package包名称以及导入依赖的类
package com.carl.ts.examples
import java.io.File
import java.time.LocalDateTime
import com.github.tototoshi.csv.CSVReader
import com.carl.ts.Series
import com.carl.ts.Stats.SeriesStats
object AnomalyApp {
def main(args: Array[String]): Unit = {
val series = loadCSV("testdata/anomalies.csv")
printStats("Raw data", series)
printStats("Differences", series.differentiate)
}
def loadCSV(fileName: String): Series[Double] = {
import java.time.format.DateTimeFormatter
val format = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")
val reader = CSVReader.open(new File(fileName))
val data = reader.allWithHeaders()
val readings: List[(LocalDateTime, Double)] = data.map(row => {
val index = row.get("time").map(x => LocalDateTime.parse(x,format)).getOrElse(LocalDateTime.now())
val value = row.get("velocity").map(_.toDouble).getOrElse(0.0)
(index, value)
})
new Series(readings)
}
def printStats(title: String, series: Series[Double]) = {
println(title)
println(" * Length: " + series.length)
println(" * Mean: " + series.mean)
println(" * Std dev: " + series.stddev)
}
}
开发者ID:klangner,项目名称:timeseries-scala,代码行数:41,代码来源:AnomalyApp.scala
示例9: VolunteerCSVReader
//设置package包名称以及导入依赖的类
package Readers
import java.io.File
import java.time.Month
import Core.{Availability, Person}
import com.github.tototoshi.csv.CSVReader
case class VolunteerCSVReader(filename: String) {
private val reader = CSVReader.open(new File(filename))
private val raw: List[Map[String, String]] = reader.allWithHeaders()
private def availability(row: Map[String,String], tentativeMeansAvailable: Boolean) : Availability = {
val sun = "Available Sun 6/12" -> Availability.AllDay(2016, Month.JUNE, 12)
val mon = "Available Mon 6/13" -> Availability.AllDay(2016, Month.JUNE, 13)
val tue = "Available Tue 6/14" -> Availability.AllDay(2016, Month.JUNE, 14)
val wed = "Available Wed 6/15" -> Availability.AllDay(2016, Month.JUNE, 15)
val thu = "Available Thurs 6/16" -> Availability.AllDay(2016, Month.JUNE, 16)
val fri = "Available Fri 6/17" -> Availability.AllDay(2016, Month.JUNE, 17)
val days = List(sun, mon, tue, wed, thu, fri)
// compute availability
days.foldLeft(Availability.NotAvailable){ case (acc,(key,avail)) =>
if (row(key) == "Y"
|| (if (tentativeMeansAvailable) { row(key) == "T" } else { false })) {
acc + avail
} else {
acc
}
}
}
def people(tentativeMeansAvailable: Boolean) : (Set[Person],Set[Person]) = {
val allPeople = raw.flatMap { row =>
if (row("Can Serve (confirmed)") == "Y") {
val avail = availability(row, tentativeMeansAvailable)
Some(
Person(
row("First name"),
row("Last name"),
avail
)
)
} else {
None
}
}.toSet
allPeople.partition { person => person.availability != Availability.NotAvailable }
}
}
开发者ID:dbarowy,项目名称:schedulous,代码行数:54,代码来源:VolunteerCSVReader.scala
注:本文中的com.github.tototoshi.csv.CSVReader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。 |
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