Module org.neo4j.cypherdsl.core
Package org.neo4j.cypherdsl.core

Class Conditions

java.lang.Object
org.neo4j.cypherdsl.core.Conditions
@API(status=STABLE, since="1.0") public final class Conditions extends Object
Builder for various conditions.
Since:
1.0
Author:
Michael J. Simons, Gerrit Meier, Aakash Sorathiya

  • Method Details

    • matching

      public static Condition matching(RelationshipPattern relationshipPattern)
      Parameters:
      relationshipPattern - The pattern being evaluated in a condition
      Returns:
      A new condition matching the given pattern

    • not

      @NotNull @Contract(pure=true) public static @NotNull Condition not(@NotNull @NotNull Condition condition)
      Negates the given condition.
      Parameters:
      condition - The condition to negate. Must not be null.
      Returns:
      The negated condition.

    • not

      @NotNull @Contract(pure=true) public static @NotNull Condition not(@NotNull @NotNull RelationshipPattern pattern)
      Negates the given pattern element: The pattern must not matched to be included in the result.
      Parameters:
      pattern - The pattern to negate. Must not be null.
      Returns:
      A condition that evaluates to true when the pattern does not match.

    • noCondition

      @NotNull @Contract(pure=true) public static @NotNull Condition noCondition()
      Creates a placeholder condition which is not rendered in the final statement but is useful while chaining conditions together.
      Returns:
      A placeholder condition.

    • isTrue

      public static Condition isTrue()
      Returns:
      a condition that is always true.

    • isFalse

      public static Condition isFalse()
      Returns:
      a condition that is always false.

    • hasLabelsOrType

      public static Condition hasLabelsOrType(SymbolicName symbolicName, String... labelsOrTypes)
      Parameters:
      symbolicName - Reference to the entity that should be checked for labels or types
      labelsOrTypes - the list of labels or types to check for
      Returns:
      A condition that checks whether a node has a set of given labels or a relationship a set of given types.
      Since:
      2021.3.0