Module com.darkcollective.relix.ast
Package com.darkcollective.relix.ast

Record Class IntervalJoinNode

java.lang.Object
java.lang.Record
com.darkcollective.relix.ast.IntervalJoinNode
Record Components:
left - the left relation; must not be null
right - the right relation; must not be null
relation - the Allen interval relation to test; must not be null
leftStart - the name of the left interval's start column
leftEnd - the name of the left interval's end column
rightStart - the name of the right interval's start column
rightEnd - the name of the right interval's end column
location - the source location of this node; never null
All Implemented Interfaces:
RelNode
public record IntervalJoinNode(RelNode left, RelNode right, AllenRelation relation, String leftStart, String leftEnd, String rightStart, String rightEnd, SourceLocation location) extends Record implements RelNode
Interval join (IJOIN) — a temporal join over two interval-valued relations using an Allen's interval algebra relation.

For each pair of rows (ℓ, r) whose interval columns satisfy the chosen AllenRelation, the join emits the concatenation of the two rows. This is always an inner join (unmatched rows are dropped). The four endpoint columns are specified by name; all must be temporal (DATE, TIME, or TIMESTAMP).

Example: Stays IJOIN OVERLAPS (Stays.checkin, Stays.checkout, Bookings.from, Bookings.to) Bookings

  • Constructor Details

  • Method Details

    • accept

      public <R> R accept(RelNodeVisitor<R> visitor)
      Specified by:
      accept in interface RelNode

    • toString

      public final String toString()
      Returns a string representation of this record class. The representation contains the name of the class, followed by the name and value of each of the record components.
      Specified by:
      toString in class Record
      Returns:
      a string representation of this object

    • hashCode

      public final int hashCode()
      Returns a hash code value for this object. The value is derived from the hash code of each of the record components.
      Specified by:
      hashCode in class Record
      Returns:
      a hash code value for this object

    • equals

      public final boolean equals(Object o)
      Indicates whether some other object is "equal to" this one. The objects are equal if the other object is of the same class and if all the record components are equal. All components in this record class are compared with Objects::equals(Object,Object).
      Specified by:
      equals in class Record
      Parameters:
      o - the object with which to compare
      Returns:
      true if this object is the same as the o argument; false otherwise.

    • left

      public RelNode left()
      Returns the value of the left record component.
      Returns:
      the value of the left record component

    • right

      public RelNode right()
      Returns the value of the right record component.
      Returns:
      the value of the right record component

    • relation

      public AllenRelation relation()
      Returns the value of the relation record component.
      Returns:
      the value of the relation record component

    • leftStart

      public String leftStart()
      Returns the value of the leftStart record component.
      Returns:
      the value of the leftStart record component

    • leftEnd

      public String leftEnd()
      Returns the value of the leftEnd record component.
      Returns:
      the value of the leftEnd record component

    • rightStart

      public String rightStart()
      Returns the value of the rightStart record component.
      Returns:
      the value of the rightStart record component

    • rightEnd

      public String rightEnd()
      Returns the value of the rightEnd record component.
      Returns:
      the value of the rightEnd record component

    • location

      public SourceLocation location()
      Returns the value of the location record component.
      Specified by:
      location in interface RelNode
      Returns:
      the value of the location record component