org.apache.spark.sql.catalyst.analysis

UnresolvedAttribute

case class UnresolvedAttribute(nameParts: Seq[String]) extends Attribute with Unevaluable with Product with Serializable

Holds the name of an attribute that has yet to be resolved.

Linear Supertypes
Serializable, Serializable, Unevaluable, Attribute, NamedExpression, LeafExpression, Expression, TreeNode[Expression], Product, Equals, AnyRef, Any
Ordering
  1. Alphabetic
  2. By inheritance
Inherited
  1. UnresolvedAttribute
  2. Serializable
  3. Serializable
  4. Unevaluable
  5. Attribute
  6. NamedExpression
  7. LeafExpression
  8. Expression
  9. TreeNode
  10. Product
  11. Equals
  12. AnyRef
  13. Any
  1. Hide All
  2. Show all
Learn more about member selection
Visibility
  1. Public
  2. All

Instance Constructors

  1. new UnresolvedAttribute(nameParts: Seq[String])

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): Expression

    Returns the tree node at the specified number.

    Returns the tree node at the specified number. Numbers for each node can be found in the numberedTreeString.

    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. 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
  11. 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
  12. 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
  13. def clone(): AnyRef

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  14. 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
  15. 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
  16. lazy val containsChild: Set[TreeNode[_]]

    Definition Classes
    TreeNode
  17. def 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
    UnresolvedAttributeExpression
  18. 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: - if it relies on some mutable internal state, or - if it relies on some implicit input that is not part of the children expression list. - if 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
  19. final def eq(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  20. 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
  21. def exprId: ExprId

    Definition Classes
    UnresolvedAttributeNamedExpression
  22. 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
  23. def finalize(): Unit

    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  24. 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
  25. 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
  26. 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
  27. 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
  28. 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
  29. def gen(ctx: CodeGenContext): GeneratedExpressionCode

    Returns an GeneratedExpressionCode, which contains Java source code that can be used to generate the result of evaluating the expression on an input row.

    Returns an GeneratedExpressionCode, which contains Java source code that can be used to generate the result of evaluating the expression on an input row.

    ctx

    a CodeGenContext

    returns

    GeneratedExpressionCode

    Definition Classes
    Expression
  30. final def genCode(ctx: CodeGenContext, ev: GeneratedExpressionCode): String

    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 GeneratedExpressionCode with unique terms.

    returns

    Java source code

    Attributes
    protected
    Definition Classes
    UnevaluableExpression
  31. def generateTreeString(depth: Int, lastChildren: Seq[Boolean], builder: StringBuilder): 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.

    Attributes
    protected
    Definition Classes
    TreeNode
  32. final def getClass(): Class[_]

    Definition Classes
    AnyRef → Any
  33. def getNodeNumbered(number: MutableInt): Expression

    Attributes
    protected
    Definition Classes
    TreeNode
  34. final def isInstanceOf[T0]: Boolean

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

    Attributes
    protected
    Definition Classes
    TreeNode
  36. 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
  37. 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
  38. 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
  39. 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
  40. def name: String

    Definition Classes
    UnresolvedAttributeNamedExpression
  41. val nameParts: Seq[String]

  42. final def ne(arg0: AnyRef): Boolean

    Definition Classes
    AnyRef
  43. def newInstance(): UnresolvedAttribute

    Definition Classes
    UnresolvedAttributeAttribute
  44. def nodeName: String

    Returns the name of this type of TreeNode.

    Returns the name of this type of TreeNode. Defaults to the class name.

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

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

    Definition Classes
    AnyRef
  47. def nullable: Boolean

    Definition Classes
    UnresolvedAttributeExpression
  48. 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 apply to easily access specific subtrees.

    Definition Classes
    TreeNode
  49. val origin: Origin

    Definition Classes
    TreeNode
  50. 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
  51. def prettyJson: String

    Definition Classes
    TreeNode
  52. 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
  53. def prettyString: String

    Returns a user-facing string representation of this expression, i.

    Returns a user-facing string representation of this expression, i.e. does not have developer centric debugging information like the expression id.

    Definition Classes
    Expression
  54. 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
  55. def qualifiers: Seq[String]

    All possible qualifiers for the expression.

    All possible qualifiers 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
    UnresolvedAttributeNamedExpression
  56. def references: AttributeSet

    Definition Classes
    AttributeExpression
  57. lazy val resolved: Boolean

    Definition Classes
    UnresolvedAttributeExpression
  58. 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).

    Definition Classes
    Expression
  59. def semanticHash(): Int

    Returns the hash for this expression.

    Returns the hash for this expression. Expressions that compute the same result, even if they differ cosmetically should return the same hash.

    Definition Classes
    Expression
  60. def simpleString: String

    String representation of this node without any children

    String representation of this node without any children

    Definition Classes
    ExpressionTreeNode
  61. 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
  62. final def synchronized[T0](arg0: ⇒ T0): T0

    Definition Classes
    AnyRef
  63. def toAttribute: Attribute

    Definition Classes
    AttributeNamedExpression
  64. def toCommentSafeString: String

    Returns the string representation of this expression that is safe to be put in code comments of generated code.

    Returns the string representation of this expression that is safe to be put in code comments of generated code.

    Attributes
    protected
    Definition Classes
    Expression
  65. def toJSON: String

    Definition Classes
    TreeNode
  66. def toString(): String

    Definition Classes
    UnresolvedAttributeExpressionTreeNode → AnyRef → Any
  67. 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
  68. def transformChildren(rule: PartialFunction[Expression, Expression], nextOperation: (Expression, PartialFunction[Expression, Expression]) ⇒ Expression): Expression

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

    Returns a copy of this node where rule has been recursively applied to all the children of this node. When rule does not apply to a given node it is left unchanged.

    rule

    the function used to transform this nodes children

    Attributes
    protected
    Definition Classes
    TreeNode
  69. 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
  70. 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
  71. 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
  72. def typeSuffix: String

    Attributes
    protected
    Definition Classes
    NamedExpression
  73. final def wait(): Unit

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

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

    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  76. def withName(newName: String): UnresolvedAttribute

    Definition Classes
    UnresolvedAttributeAttribute
  77. 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
  78. def withNullability(newNullability: Boolean): UnresolvedAttribute

    Definition Classes
    UnresolvedAttributeAttribute
  79. def withQualifiers(newQualifiers: Seq[String]): UnresolvedAttribute

    Definition Classes
    UnresolvedAttributeAttribute

Inherited from Serializable

Inherited from Serializable

Inherited from Unevaluable

Inherited from Attribute

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