本文整理汇总了Scala中org.apache.parquet.io.api.Binary类的典型用法代码示例。如果您正苦于以下问题：Scala Binary类的具体用法？Scala Binary怎么用？Scala Binary使用的例子？那么, 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Binary类的1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Scala代码示例。
示例1: MessageWriter
//设置package包名称以及导入依赖的类
package com.trueaccord.scalapb.parquet
import com.google.protobuf.ByteString
import com.google.protobuf.Descriptors.FieldDescriptor.JavaType
import com.google.protobuf.Descriptors.{EnumValueDescriptor, FieldDescriptor}
import com.trueaccord.scalapb.{GeneratedMessage, Message}
import org.apache.parquet.io.api.Binary
import org.apache.parquet.Log
import org.apache.parquet.io.api.RecordConsumer
object MessageWriter {
val log = Log.getLog(this.getClass)
def writeTopLevelMessage[T <: GeneratedMessage with Message[T]](consumer: RecordConsumer, m: T) = {
consumer.startMessage()
writeAllFields(consumer, m)
consumer.endMessage()
}
private def writeAllFields[T <: GeneratedMessage](consumer: RecordConsumer, m: T): Unit = {
m.getAllFields.foreach {
case (fd, value) =>
consumer.startField(fd.getName, fd.getIndex)
if (fd.isRepeated) {
value.asInstanceOf[Seq[Any]].foreach {
v =>
writeSingleField(consumer, fd, v)
}
} else {
writeSingleField(consumer, fd, value)
}
consumer.endField(fd.getName, fd.getIndex)
}
}
private def writeSingleField(consumer: RecordConsumer, fd: FieldDescriptor, v: Any) = fd.getJavaType match {
case JavaType.BOOLEAN => consumer.addBoolean(v.asInstanceOf[Boolean])
case JavaType.INT => consumer.addInteger(v.asInstanceOf[Int])
case JavaType.LONG => consumer.addLong(v.asInstanceOf[Long])
case JavaType.FLOAT => consumer.addFloat(v.asInstanceOf[Float])
case JavaType.DOUBLE => consumer.addDouble(v.asInstanceOf[Double])
case JavaType.BYTE_STRING => consumer.addBinary(Binary.fromByteArray(v.asInstanceOf[ByteString].toByteArray))
case JavaType.STRING => consumer.addBinary(Binary.fromString(v.asInstanceOf[String]))
case JavaType.MESSAGE =>
consumer.startGroup()
writeAllFields(consumer, v.asInstanceOf[GeneratedMessage])
consumer.endGroup()
case JavaType.ENUM => consumer.addBinary(Binary.fromString(v.asInstanceOf[EnumValueDescriptor].getName))
case javaType =>
throw new UnsupportedOperationException("Cannot convert Protocol Buffer: unknown type " + javaType)
}
}