Class LinearInt

All Implemented Interfaces:
SatisfiedPresent, StoreAware
Direct Known Subclasses:
LinearIntDom

public class LinearInt extends PrimitiveConstraint
  • Field Details

    • store

      Store store
    • idNumber

      static AtomicInteger idNumber
    • reified

      boolean reified
    • eq

      static final byte eq
      See Also:
    • le

      static final byte le
      See Also:
    • lt

      static final byte lt
      See Also:
    • ne

      static final byte ne
      See Also:
    • gt

      static final byte gt
      See Also:
    • ge

      static final byte ge
      See Also:
    • negRel

      static final byte[] negRel
    • relationType

      public byte relationType
    • x

      IntVar[] x
      It specifies a list of variables being summed.
    • a

      long[] a
      It specifies a list of weights associated with the variables being summed.
    • b

      long b
      It specifies variable for the overall sum.
    • pos

      int pos
      It specifies the index of the last positive coefficient.
    • l

      int l
      It specifies the number of variables/coefficients.
    • I

      long[] I
    • sumMin

      long sumMin
    • sumMax

      long sumMax
  • Constructor Details

    • LinearInt

      protected LinearInt()
    • LinearInt

      @Deprecated public LinearInt(Store store, IntVar[] list, int[] weights, String rel, int sum)
      Deprecated.
    • LinearInt

      @Deprecated public LinearInt(Store store, List<? extends IntVar> list, List<Integer> weights, String rel, int sum)
      Deprecated.
      LinearInt constraint does not use Store parameter any longer.
      It constructs the constraint LinearInt.
      Parameters:
      store - current store
      list - list which are being multiplied by weights.
      weights - weight for each variable.
      rel - the relation, one of "==", "<", ">", "<=", ">=", "!="
      sum - the sum of weighted list.
    • LinearInt

      @Deprecated public LinearInt(Store store, IntVar[] list, int[] weights, String rel, IntVar sum)
      Deprecated.
    • LinearInt

      public LinearInt(IntVar[] list, int[] weights, String rel, int sum)
    • LinearInt

      public LinearInt(List<? extends IntVar> list, List<Integer> weights, String rel, int sum)
      It constructs the constraint LinearInt.
      Parameters:
      list - list which are being multiplied by weights.
      weights - weight for each variable.
      rel - the relation, one of "==", "<", ">", "<=", ">=", "!="
      sum - the sum of weighted list.
    • LinearInt

      public LinearInt(IntVar[] list, int[] weights, String rel, IntVar sum)
  • Method Details

    • commonInitialization

      protected void commonInitialization(Store store, IntVar[] list, int[] weights, String rel, int sum)
    • consistency

      public void consistency(Store store)
      Description copied from class: Constraint
      It is a (most probably incomplete) consistency function which removes the values from variables domains. Only values which do not have any support in a solution space are removed.
      Specified by:
      consistency in class Constraint
      Parameters:
      store - constraint store within which the constraint consistency is being checked.
    • notConsistency

      public void notConsistency(Store store)
      Description copied from class: PrimitiveConstraint
      It makes pruning in such a way that constraint is notConsistent. It removes values which always belong to a solution.
      Specified by:
      notConsistency in class PrimitiveConstraint
      Parameters:
      store - the constraint store in which context the notConsistency technique is evaluated.
    • propagate

      public void propagate(int rel)
    • getDefaultNestedConsistencyPruningEvent

      protected int getDefaultNestedConsistencyPruningEvent()
      Overrides:
      getDefaultNestedConsistencyPruningEvent in class PrimitiveConstraint
    • getDefaultNestedNotConsistencyPruningEvent

      protected int getDefaultNestedNotConsistencyPruningEvent()
      Overrides:
      getDefaultNestedNotConsistencyPruningEvent in class PrimitiveConstraint
    • getDefaultConsistencyPruningEvent

      public int getDefaultConsistencyPruningEvent()
      Specified by:
      getDefaultConsistencyPruningEvent in class Constraint
    • getDefaultNotConsistencyPruningEvent

      protected int getDefaultNotConsistencyPruningEvent()
      Specified by:
      getDefaultNotConsistencyPruningEvent in class PrimitiveConstraint
    • impose

      public void impose(Store store)
      Description copied from class: Constraint
      It imposes the constraint in a given store.
      Overrides:
      impose in class PrimitiveConstraint
      Parameters:
      store - the constraint store to which the constraint is imposed to.
    • computeInit

      void computeInit()
    • pruneLtEq

      void pruneLtEq(long b)
    • pruneGtEq

      void pruneGtEq(long b)
    • pruneNeq

      void pruneNeq()
    • pruneMin

      private boolean pruneMin(IntVar x, long min)
    • pruneMax

      private boolean pruneMax(IntVar x, long max)
    • pruneNe

      private boolean pruneNe(IntVar x, long min, long max, long a)
    • satisfiedEq

      public boolean satisfiedEq()
    • satisfiedNeq

      public boolean satisfiedNeq()
    • satisfiedLtEq

      public boolean satisfiedLtEq(long b)
    • satisfiedGtEq

      public boolean satisfiedGtEq(long b)
    • satisfied

      public boolean satisfied()
      Description copied from interface: SatisfiedPresent
      It checks if the constraint is satisfied. It can return false even if constraint is satisfied but not all variables in its scope are grounded. It needs to return true if all variables in its scope are grounded and constraint is satisfied.

      Implementations of this interface for constraints that are not PrimitiveConstraint may require constraint imposition and consistency check as a requirement to work correctly.

      Returns:
      true if constraint is possible to verify that it is satisfied.
    • notSatisfied

      public boolean notSatisfied()
      Description copied from class: PrimitiveConstraint
      It checks if constraint would be always not satisfied.
      Specified by:
      notSatisfied in class PrimitiveConstraint
      Returns:
      true if constraint must be notSatisfied, false otherwise.
    • entailed

      private boolean entailed(int rel)
    • relation

      public byte relation(String r)
    • rel2String

      public String rel2String()
    • checkForOverflow

      void checkForOverflow()
    • toString

      public String toString()
      Description copied from class: Constraint
      It produces a string representation of a constraint state.
      Overrides:
      toString in class Constraint