Record Class Predicate.PartitionPredicate

java.lang.Object
java.lang.Record
com.loomcache.server.query.Predicate.PartitionPredicate
All Implemented Interfaces:
Predicate
Enclosing interface:
Predicate
public static record Predicate.PartitionPredicate(Object partitionKey, Predicate delegate) extends Record implements Predicate
Predicate wrapper that carries an explicit partition key for query routing.

The delegate still performs row filtering; the partition key only tells the sharded query executor which single owner group can satisfy the query.

  • Constructor Details

    • PartitionPredicate

      public PartitionPredicate(Object partitionKey, Predicate delegate)
      Creates an instance of a PartitionPredicate record class.
      Parameters:
      partitionKey - the value for the partitionKey record component
      delegate - the value for the delegate record component

  • Method Details

    • matches

      public boolean matches(SqlRow row)
      Description copied from interface: Predicate
      Tests whether the given row matches this predicate.
      Specified by:
      matches in interface Predicate
      Parameters:
      row - the row to test
      Returns:
      true if the row matches, false otherwise

    • toString

      public 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.

    • partitionKey

      public Object partitionKey()
      Returns the value of the partitionKey record component.
      Returns:
      the value of the partitionKey record component

    • delegate

      public Predicate delegate()
      Returns the value of the delegate record component.
      Returns:
      the value of the delegate record component