org.apache.spark.sql.catalyst.expressions

PrettyAttribute

case class PrettyAttribute(name: String, dataType: DataType = org.apache.spark.sql.types.NullType) extends Attribute with Unevaluable with Product with Serializable

A place holder used when printing expressions without debugging information such as the expression id or the unresolved indicator.

Linear Supertypes
Serializable, Serializable, Unevaluable, Attribute, NullIntolerant, NamedExpression, LeafExpression, Expression, TreeNode[Expression], Product, Equals, AnyRef, Any
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Inherited
  1. PrettyAttribute
  2. Serializable
  3. Serializable
  4. Unevaluable
  5. Attribute
  6. NullIntolerant
  7. NamedExpression
  8. LeafExpression
  9. Expression
  10. TreeNode
  11. Product
  12. Equals
  13. AnyRef
  14. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new PrettyAttribute(attribute: Attribute)

  2. new PrettyAttribute(name: String, dataType: DataType = org.apache.spark.sql.types.NullType)

Value Members

  1. final def !=(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  2. final def !=(arg0: Any): Boolean

    Definition Classes
    Any
  3. final def ##(): Int

    Definition Classes
    AnyRef → Any
  4. final def ==(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  5. final def ==(arg0: Any): Boolean

    Definition Classes
    Any
  6. def apply(number: Int): TreeNode[_]

    Returns the tree node at the specified number, used primarily for interactive debugging.

    Returns the tree node at the specified number, used primarily for interactive debugging. Numbers for each node can be found in the numberedTreeString.

    Note that this cannot return BaseType because logical plan's plan node might return physical plan for innerChildren, e.g. in-memory relation logical plan node has a reference to the physical plan node it is referencing.

    Definition Classes
    TreeNode
  7. def argString: String

    Returns a string representing the arguments to this node, minus any children

    Returns a string representing the arguments to this node, minus any children

    Definition Classes
    TreeNode
  8. def asCode: String

    Returns a 'scala code' representation of this TreeNode and its children.

    Returns a 'scala code' representation of this TreeNode and its children. Intended for use when debugging where the prettier toString function is obfuscating the actual structure. In the case of 'pure' TreeNodes that only contain primitives and other TreeNodes, the result can be pasted in the REPL to build an equivalent Tree.

    Definition Classes
    TreeNode
  9. final def asInstanceOf[T0]: T0

    Definition Classes
    Any
  10. lazy val canonicalized: Expression

    Returns an expression where a best effort attempt has been made to transform this in a way that preserves the result but removes cosmetic variations (case sensitivity, ordering for commutative operations, etc.

    Returns an expression where a best effort attempt has been made to transform this in a way that preserves the result but removes cosmetic variations (case sensitivity, ordering for commutative operations, etc.) See Canonicalize for more details.

    deterministic expressions where this.canonicalized == other.canonicalized will always evaluate to the same result.

    Definition Classes
    Expression
  11. def checkInputDataTypes(): TypeCheckResult

    Checks the input data types, returns TypeCheckResult.success if it's valid, or returns a TypeCheckResult with an error message if invalid.

    Checks the input data types, returns TypeCheckResult.success if it's valid, or returns a TypeCheckResult with an error message if invalid. Note: it's not valid to call this method until childrenResolved == true.

    Definition Classes
    Expression
  12. final def children: Seq[Expression]

    Returns a Seq of the children of this node.

    Returns a Seq of the children of this node. Children should not change. Immutability required for containsChild optimization

    Definition Classes
    LeafExpressionTreeNode
  13. def childrenResolved: Boolean

    Returns true if all the children of this expression have been resolved to a specific schema and false if any still contains any unresolved placeholders.

    Returns true if all the children of this expression have been resolved to a specific schema and false if any still contains any unresolved placeholders.

    Definition Classes
    Expression
  14. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  15. def collect[B](pf: PartialFunction[Expression, B]): Seq[B]

    Returns a Seq containing the result of applying a partial function to all elements in this tree on which the function is defined.

    Returns a Seq containing the result of applying a partial function to all elements in this tree on which the function is defined.

    Definition Classes
    TreeNode
  16. def collectFirst[B](pf: PartialFunction[Expression, B]): Option[B]

    Finds and returns the first TreeNode of the tree for which the given partial function is defined (pre-order), and applies the partial function to it.

    Finds and returns the first TreeNode of the tree for which the given partial function is defined (pre-order), and applies the partial function to it.

    Definition Classes
    TreeNode
  17. def collectLeaves(): Seq[Expression]

    Returns a Seq containing the leaves in this tree.

    Returns a Seq containing the leaves in this tree.

    Definition Classes
    TreeNode
  18. lazy val containsChild: Set[TreeNode[_]]

    Definition Classes
    TreeNode
  19. val dataType: DataType

    Returns the DataType of the result of evaluating this expression.

    Returns the DataType of the result of evaluating this expression. It is invalid to query the dataType of an unresolved expression (i.e., when resolved == false).

    Definition Classes
    PrettyAttributeExpression
  20. def deterministic: Boolean

    Returns true when the current expression always return the same result for fixed inputs from children.

    Returns true when the current expression always return the same result for fixed inputs from children.

    Note that this means that an expression should be considered as non-deterministic if: - it relies on some mutable internal state, or - it relies on some implicit input that is not part of the children expression list. - it has non-deterministic child or children.

    An example would be SparkPartitionID that relies on the partition id returned by TaskContext. By default leaf expressions are deterministic as Nil.forall(_.deterministic) returns true.

    Definition Classes
    Expression
  21. final def doGenCode(ctx: CodegenContext, ev: ExprCode): ExprCode

    Returns Java source code that can be compiled to evaluate this expression.

    Returns Java source code that can be compiled to evaluate this expression. The default behavior is to call the eval method of the expression. Concrete expression implementations should override this to do actual code generation.

    ctx

    a CodegenContext

    ev

    an ExprCode with unique terms.

    returns

    an ExprCode containing the Java source code to generate the given expression

    Attributes
    protected
    Definition Classes
    UnevaluableExpression
  22. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  23. final def eval(input: InternalRow = null): Any

    Returns the result of evaluating this expression on a given input Row

    Returns the result of evaluating this expression on a given input Row

    Definition Classes
    UnevaluableExpression
  24. def exprId: ExprId

    Definition Classes
    PrettyAttributeNamedExpression
  25. def fastEquals(other: TreeNode[_]): Boolean

    Faster version of equality which short-circuits when two treeNodes are the same instance.

    Faster version of equality which short-circuits when two treeNodes are the same instance. We don't just override Object.equals, as doing so prevents the scala compiler from generating case class equals methods

    Definition Classes
    TreeNode
  26. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  27. def find(f: (Expression) ⇒ Boolean): Option[Expression]

    Find the first TreeNode that satisfies the condition specified by f.

    Find the first TreeNode that satisfies the condition specified by f. The condition is recursively applied to this node and all of its children (pre-order).

    Definition Classes
    TreeNode
  28. def flatArguments: Iterator[Any]

    Attributes
    protected
    Definition Classes
    Expression
  29. def flatMap[A](f: (Expression) ⇒ TraversableOnce[A]): Seq[A]

    Returns a Seq by applying a function to all nodes in this tree and using the elements of the resulting collections.

    Returns a Seq by applying a function to all nodes in this tree and using the elements of the resulting collections.

    Definition Classes
    TreeNode
  30. def foldable: Boolean

    We should never fold named expressions in order to not remove the alias.

    We should never fold named expressions in order to not remove the alias.

    Definition Classes
    NamedExpressionExpression
  31. def foreach(f: (Expression) ⇒ Unit): Unit

    Runs the given function on this node and then recursively on children.

    Runs the given function on this node and then recursively on children.

    f

    the function to be applied to each node in the tree.

    Definition Classes
    TreeNode
  32. def foreachUp(f: (Expression) ⇒ Unit): Unit

    Runs the given function recursively on children then on this node.

    Runs the given function recursively on children then on this node.

    f

    the function to be applied to each node in the tree.

    Definition Classes
    TreeNode
  33. def genCode(ctx: CodegenContext): ExprCode

    Returns an ExprCode, that contains the Java source code to generate the result of evaluating the expression on an input row.

    Returns an ExprCode, that contains the Java source code to generate the result of evaluating the expression on an input row.

    ctx

    a CodegenContext

    returns

    ExprCode

    Definition Classes
    Expression
  34. def generateTreeString(depth: Int, lastChildren: Seq[Boolean], builder: StringBuilder, verbose: Boolean, prefix: String = "", addSuffix: Boolean = false): StringBuilder

    Appends the string represent of this node and its children to the given StringBuilder.

    Appends the string represent of this node and its children to the given StringBuilder.

    The i-th element in lastChildren indicates whether the ancestor of the current node at depth i + 1 is the last child of its own parent node. The depth of the root node is 0, and lastChildren for the root node should be empty.

    Note that this traversal (numbering) order must be the same as getNodeNumbered.

    Definition Classes
    TreeNode
  35. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
  36. def hashCode(): Int

    Definition Classes
    TreeNode → AnyRef → Any
  37. def innerChildren: Seq[TreeNode[_]]

    All the nodes that should be shown as a inner nested tree of this node.

    All the nodes that should be shown as a inner nested tree of this node. For example, this can be used to show sub-queries.

    Attributes
    protected
    Definition Classes
    TreeNode
  38. def isGenerated: Boolean

    Returns true if the expression is generated by Catalyst

    Returns true if the expression is generated by Catalyst

    Definition Classes
    NamedExpression
  39. final def isInstanceOf[T0]: Boolean

    Definition Classes
    Any
  40. def jsonFields: List[(String, JValue)]

    Attributes
    protected
    Definition Classes
    TreeNode
  41. def makeCopy(newArgs: Array[AnyRef]): Expression

    Creates a copy of this type of tree node after a transformation.

    Creates a copy of this type of tree node after a transformation. Must be overridden by child classes that have constructor arguments that are not present in the productIterator.

    newArgs

    the new product arguments.

    Definition Classes
    TreeNode
  42. def map[A](f: (Expression) ⇒ A): Seq[A]

    Returns a Seq containing the result of applying the given function to each node in this tree in a preorder traversal.

    Returns a Seq containing the result of applying the given function to each node in this tree in a preorder traversal.

    f

    the function to be applied.

    Definition Classes
    TreeNode
  43. def mapChildren(f: (Expression) ⇒ Expression): Expression

    Returns a copy of this node where f has been applied to all the nodes children.

    Returns a copy of this node where f has been applied to all the nodes children.

    Definition Classes
    TreeNode
  44. def mapProductIterator[B](f: (Any) ⇒ B)(implicit arg0: ClassTag[B]): Array[B]

    Efficient alternative to productIterator.map(f).toArray.

    Efficient alternative to productIterator.map(f).toArray.

    Attributes
    protected
    Definition Classes
    TreeNode
  45. def metadata: Metadata

    Returns the metadata when an expression is a reference to another expression with metadata.

    Returns the metadata when an expression is a reference to another expression with metadata.

    Definition Classes
    NamedExpression
  46. val name: String

    Definition Classes
    PrettyAttributeNamedExpression
  47. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  48. def newInstance(): Attribute

    Returns a copy of this expression with a new exprId.

    Returns a copy of this expression with a new exprId.

    Definition Classes
    PrettyAttributeAttributeNamedExpression
  49. def nodeName: String

    Returns the name of this type of TreeNode.

    Returns the name of this type of TreeNode. Defaults to the class name. Note that we remove the "Exec" suffix for physical operators here.

    Definition Classes
    TreeNode
  50. final def notify(): Unit

    Definition Classes
    AnyRef
  51. final def notifyAll(): Unit

    Definition Classes
    AnyRef
  52. def nullable: Boolean

    Definition Classes
    PrettyAttributeExpression
  53. def numberedTreeString: String

    Returns a string representation of the nodes in this tree, where each operator is numbered.

    Returns a string representation of the nodes in this tree, where each operator is numbered. The numbers can be used with TreeNode.apply to easily access specific subtrees.

    The numbers are based on depth-first traversal of the tree (with innerChildren traversed first before children).

    Definition Classes
    TreeNode
  54. val origin: Origin

    Definition Classes
    TreeNode
  55. def otherCopyArgs: Seq[AnyRef]

    Args to the constructor that should be copied, but not transformed.

    Args to the constructor that should be copied, but not transformed. These are appended to the transformed args automatically by makeCopy

    returns

    Attributes
    protected
    Definition Classes
    TreeNode
  56. def p(number: Int): Expression

    Returns the tree node at the specified number, used primarily for interactive debugging.

    Returns the tree node at the specified number, used primarily for interactive debugging. Numbers for each node can be found in the numberedTreeString.

    This is a variant of apply that returns the node as BaseType (if the type matches).

    Definition Classes
    TreeNode
  57. def prettyJson: String

    Definition Classes
    TreeNode
  58. def prettyName: String

    Returns a user-facing string representation of this expression's name.

    Returns a user-facing string representation of this expression's name. This should usually match the name of the function in SQL.

    Definition Classes
    Expression
  59. def qualifiedName: String

    Returns a dot separated fully qualified name for this attribute.

    Returns a dot separated fully qualified name for this attribute. Given that there can be multiple qualifiers, it is possible that there are other possible way to refer to this attribute.

    Definition Classes
    NamedExpression
  60. def qualifier: Option[String]

    Optional qualifier for the expression.

    Optional qualifier for the expression.

    For now, since we do not allow using original table name to qualify a column name once the table is aliased, this can only be:

    1. Empty Seq: when an attribute doesn't have a qualifier, e.g. top level attributes aliased in the SELECT clause, or column from a LocalRelation. 2. Single element: either the table name or the alias name of the table.

    Definition Classes
    PrettyAttributeNamedExpression
  61. def references: AttributeSet

    Definition Classes
    AttributeExpression
  62. lazy val resolved: Boolean

    Returns true if this expression and all its children have been resolved to a specific schema and input data types checking passed, and false if it still contains any unresolved placeholders or has data types mismatch.

    Returns true if this expression and all its children have been resolved to a specific schema and input data types checking passed, and false if it still contains any unresolved placeholders or has data types mismatch. Implementations of expressions should override this if the resolution of this type of expression involves more than just the resolution of its children and type checking.

    Definition Classes
    Expression
  63. def semanticEquals(other: Expression): Boolean

    Returns true when two expressions will always compute the same result, even if they differ cosmetically (i.

    Returns true when two expressions will always compute the same result, even if they differ cosmetically (i.e. capitalization of names in attributes may be different).

    See Canonicalize for more details.

    Definition Classes
    Expression
  64. def semanticHash(): Int

    Returns a hashCode for the calculation performed by this expression.

    Returns a hashCode for the calculation performed by this expression. Unlike the standard hashCode, an attempt has been made to eliminate cosmetic differences.

    See Canonicalize for more details.

    Definition Classes
    Expression
  65. def simpleString: String

    ONE line description of this node.

    ONE line description of this node.

    Definition Classes
    ExpressionTreeNode
  66. def sql: String

    Returns SQL representation of this expression.

    Returns SQL representation of this expression. For expressions extending NonSQLExpression, this method may return an arbitrary user facing string.

    Definition Classes
    PrettyAttributeExpression
  67. def stringArgs: Iterator[Any]

    The arguments that should be included in the arg string.

    The arguments that should be included in the arg string. Defaults to the productIterator.

    Attributes
    protected
    Definition Classes
    TreeNode
  68. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  69. def toAttribute: Attribute

    Definition Classes
    AttributeNamedExpression
  70. def toJSON: String

    Definition Classes
    TreeNode
  71. def toString(): String

    Definition Classes
    PrettyAttributeExpressionTreeNode → AnyRef → Any
  72. def transform(rule: PartialFunction[Expression, Expression]): Expression

    Returns a copy of this node where rule has been recursively applied to the tree.

    Returns a copy of this node where rule has been recursively applied to the tree. When rule does not apply to a given node it is left unchanged. Users should not expect a specific directionality. If a specific directionality is needed, transformDown or transformUp should be used.

    rule

    the function use to transform this nodes children

    Definition Classes
    TreeNode
  73. def transformDown(rule: PartialFunction[Expression, Expression]): Expression

    Returns a copy of this node where rule has been recursively applied to it and all of its children (pre-order).

    Returns a copy of this node where rule has been recursively applied to it and all of its children (pre-order). When rule does not apply to a given node it is left unchanged.

    rule

    the function used to transform this nodes children

    Definition Classes
    TreeNode
  74. def transformUp(rule: PartialFunction[Expression, Expression]): Expression

    Returns a copy of this node where rule has been recursively applied first to all of its children and then itself (post-order).

    Returns a copy of this node where rule has been recursively applied first to all of its children and then itself (post-order). When rule does not apply to a given node, it is left unchanged.

    rule

    the function use to transform this nodes children

    Definition Classes
    TreeNode
  75. def treeString(verbose: Boolean, addSuffix: Boolean = false): String

    Definition Classes
    TreeNode
  76. def treeString: String

    Returns a string representation of the nodes in this tree

    Returns a string representation of the nodes in this tree

    Definition Classes
    TreeNode
  77. def typeSuffix: String

    Attributes
    protected
    Definition Classes
    NamedExpression
  78. final def verboseString: String

    ONE line description of this node with more information

    ONE line description of this node with more information

    Definition Classes
    ExpressionTreeNode
  79. def verboseStringWithSuffix: String

    ONE line description of this node with some suffix information

    ONE line description of this node with some suffix information

    Definition Classes
    TreeNode
  80. final def wait(): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  81. final def wait(arg0: Long, arg1: Int): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  82. final def wait(arg0: Long): Unit

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  83. def withMetadata(newMetadata: Metadata): Attribute

    Definition Classes
    PrettyAttributeAttribute
  84. def withName(newName: String): Attribute

    Definition Classes
    PrettyAttributeAttribute
  85. def withNewChildren(newChildren: Seq[Expression]): Expression

    Returns a copy of this node with the children replaced.

    Returns a copy of this node with the children replaced. TODO: Validate somewhere (in debug mode?) that children are ordered correctly.

    Definition Classes
    TreeNode
  86. def withNullability(newNullability: Boolean): Attribute

    Definition Classes
    PrettyAttributeAttribute
  87. def withQualifier(newQualifier: Option[String]): Attribute

    Definition Classes
    PrettyAttributeAttribute

Inherited from Serializable

Inherited from Serializable

Inherited from Unevaluable

Inherited from Attribute

Inherited from NullIntolerant

Inherited from NamedExpression

Inherited from LeafExpression

Inherited from Expression

Inherited from TreeNode[Expression]

Inherited from Product

Inherited from Equals

Inherited from AnyRef

Inherited from Any

Ungrouped