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90
src/main/scala/za/co/absa/standardization/types/CommonTypeDefaults.scala
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| /* | ||
| * Copyright 2021 ABSA Group Limited | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
|
|
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| package za.co.absa.standardization.types | ||
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| import org.apache.spark.sql.types.{BinaryType, BooleanType, ByteType, DataType, DateType, DecimalType, DoubleType, FloatType, IntegerType, LongType, ShortType, StringType, TimestampType} | ||
| import za.co.absa.standardization.numeric.DecimalSymbols | ||
|
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| import java.sql.{Date, Timestamp} | ||
| import java.util.Locale | ||
| import scala.util.{Success, Try} | ||
|
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| class CommonTypeDefaults extends TypeDefaults { | ||
| val integerTypeDefault: Int = 0 | ||
| val floatTypeDefault: Float = 0f | ||
| val byteTypeDefault: Byte = 0.toByte | ||
| val shortTypeDefault: Short = 0.toShort | ||
| val doubleTypeDefault: Double = 0.0d | ||
| val longTypeDefault: Long = 0L | ||
| val stringTypeDefault: String = "" | ||
| val binaryTypeDefault: Array[Byte] = Array.empty[Byte] | ||
| val dateTypeDefault: Date = new Date(0) // Linux epoch | ||
| val timestampTypeDefault: Timestamp = new Timestamp(0) | ||
| val booleanTypeDefault: Boolean = false | ||
| val decimalTypeDefault: (Int, Int) => BigDecimal = { (precision, scale) => | ||
| val beforeFloatingPoint = "0" * (precision - scale) | ||
| val afterFloatingPoint = "0" * scale | ||
| BigDecimal(s"$beforeFloatingPoint.$afterFloatingPoint") | ||
| } | ||
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| override def defaultTimestampTimeZone: Option[String] = None | ||
| override def defaultDateTimeZone: Option[String] = None | ||
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| override def getDecimalSymbols: DecimalSymbols = DecimalSymbols(Locale.US) | ||
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| override def getDataTypeDefaultValue(dt: DataType): Any = | ||
| dt match { | ||
| case _: IntegerType => integerTypeDefault | ||
| case _: FloatType => floatTypeDefault | ||
| case _: ByteType => byteTypeDefault | ||
| case _: ShortType => shortTypeDefault | ||
| case _: DoubleType => doubleTypeDefault | ||
| case _: LongType => longTypeDefault | ||
| case _: StringType => stringTypeDefault | ||
| case _: BinaryType => binaryTypeDefault | ||
| case _: DateType => dateTypeDefault | ||
| case _: TimestampType => timestampTypeDefault | ||
| case _: BooleanType => booleanTypeDefault | ||
| case t: DecimalType => decimalTypeDefault(t.precision, t.scale) | ||
| case _ => throw new IllegalStateException(s"No default value defined for data type ${dt.typeName}") | ||
| } | ||
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| override def getDataTypeDefaultValueWithNull(dt: DataType, nullable: Boolean): Try[Option[Any]] = { | ||
| if (nullable) { | ||
| Success(None) | ||
| } else { | ||
| Try{ | ||
| getDataTypeDefaultValue(dt) | ||
| }.map(Some(_)) | ||
| } | ||
| } | ||
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| override def getStringPattern(dt: DataType): String = dt match { | ||
| case DateType => "yyyy-MM-dd" | ||
| case TimestampType => "yyyy-MM-dd HH:mm:ss" | ||
| case _: IntegerType | ||
| | FloatType | ||
| | ByteType | ||
| | ShortType | ||
| | DoubleType | ||
| | LongType => "" | ||
| case _: DecimalType => "" | ||
| case _ => throw new IllegalStateException(s"No default format defined for data type ${dt.typeName}") | ||
| } | ||
| } | ||
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| object CommonTypeDefaults extends CommonTypeDefaults |
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