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org.apache.spark.sql.catalyst.util

CharVarcharUtils

object CharVarcharUtils extends Logging

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##: Int
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  3. final def ==(arg0: Any): Boolean
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  4. def addPaddingForScan(attr: Attribute): Expression
  5. def addPaddingInStringComparison(attrs: Seq[Attribute]): Seq[Expression]

    Return expressions to apply char type padding for the string comparison between the given attributes.

    Return expressions to apply char type padding for the string comparison between the given attributes. When comparing two char type columns/fields, we need to pad the shorter one to the longer length.

  6. final def asInstanceOf[T0]: T0
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  7. def cleanAttrMetadata(attr: AttributeReference): AttributeReference

    Removes the metadata entry that contains the original type string of CharType/VarcharType from the given attribute's metadata.

  8. def clone(): AnyRef
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    protected[lang]
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    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  9. final def eq(arg0: AnyRef): Boolean
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  10. def equals(arg0: AnyRef): Boolean
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  11. def failIfHasCharVarchar(dt: DataType): DataType

    Validate the given DataType to fail if it is char or varchar types or contains nested ones

  12. def finalize(): Unit
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  13. final def getClass(): Class[_ <: AnyRef]
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    @native()
  14. def getRawSchema(schema: StructType, conf: SQLConf): StructType
  15. def getRawSchema(schema: StructType): StructType

    Re-construct the original schema from the type string in the given metadata of each field.

  16. def getRawType(metadata: Metadata): Option[DataType]

    Re-construct the original data type from the type string in the given metadata.

    Re-construct the original data type from the type string in the given metadata. This is needed when dealing with char/varchar columns/fields.

  17. def getRawTypeString(metadata: Metadata): Option[String]
  18. def hasCharVarchar(dt: DataType): Boolean

    Returns true if the given data type is CharType/VarcharType or has nested CharType/VarcharType.

  19. def hashCode(): Int
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  20. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean): Boolean
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  21. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
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  22. final def isInstanceOf[T0]: Boolean
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  23. def isTraceEnabled(): Boolean
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  24. def log: Logger
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  25. def logDebug(msg: => String, throwable: Throwable): Unit
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  26. def logDebug(msg: => String): Unit
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  27. def logError(msg: => String, throwable: Throwable): Unit
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  28. def logError(msg: => String): Unit
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  29. def logInfo(msg: => String, throwable: Throwable): Unit
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  30. def logInfo(msg: => String): Unit
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  31. def logName: String
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  32. def logTrace(msg: => String, throwable: Throwable): Unit
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  33. def logTrace(msg: => String): Unit
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  34. def logWarning(msg: => String, throwable: Throwable): Unit
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  35. def logWarning(msg: => String): Unit
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  36. final def ne(arg0: AnyRef): Boolean
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  37. final def notify(): Unit
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    @native()
  38. final def notifyAll(): Unit
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  39. def replaceCharVarcharWithString(dt: DataType): DataType

    Replaces CharType/VarcharType with StringType recursively in the given data type.

  40. def replaceCharVarcharWithStringForCast(dt: DataType): DataType

    Replaces CharType/VarcharType with StringType recursively in the given data type, with a warning message if it has char or varchar types

  41. def replaceCharVarcharWithStringInSchema(st: StructType): StructType

    Replaces CharType/VarcharType with StringType recursively in the given struct type.

    Replaces CharType/VarcharType with StringType recursively in the given struct type. If a top-level StructField's data type is CharType/VarcharType or has nested CharType/VarcharType, this method will add the original type string to the StructField's metadata, so that we can re-construct the original data type with CharType/VarcharType later when needed.

  42. def replaceCharWithVarchar(dt: DataType): DataType

    Replaces CharType with VarcharType recursively in the given data type.

  43. def stringLengthCheck(expr: Expression, dt: DataType): Expression
  44. def stringLengthCheck(expr: Expression, targetAttr: Attribute): Expression

    Returns an expression to apply write-side string length check for the given expression.

    Returns an expression to apply write-side string length check for the given expression. A string value can not exceed N characters if it's written into a CHAR(N)/VARCHAR(N) column/field.

  45. final def synchronized[T0](arg0: => T0): T0
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  46. def toString(): String
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  47. final def wait(): Unit
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    @throws(classOf[java.lang.InterruptedException])
  48. final def wait(arg0: Long, arg1: Int): Unit
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    @throws(classOf[java.lang.InterruptedException])
  49. final def wait(arg0: Long): Unit
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    @throws(classOf[java.lang.InterruptedException]) @native()

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