Class IntSet

java.lang.Object
org.postgresql.util.internal.IntSet
public final class IntSet extends Object
Read-optimized Set for storing Oid values. Note: the set does not support nullable values.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    private final BitSet
    bitSet
    Contains values in range of [0..MAX_OID_TO_STORE_IN_BITSET].
    private static final int
    MAX_OID_TO_STORE_IN_BITSET
    Maximal Oid that will bs stored in BitSet.
    private Set<Integer>
    set
    Contains values outside [0..MAX_OID_TO_STORE_IN_BITSET] range.

  • Constructor Summary

    Constructors
    Constructor
    Description
    IntSet()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    add(int value)
    Adds a single value to the set.
    void
    addAll(Collection<? extends Integer> values)
    Adds all the values to the set.
    void
    clear()
    Clears the contents of the set.
    boolean
    contains(int value)
    Checks if a given value belongs to the set.
    boolean
    remove(int value)
    Removes a value from the set.
    Set<Integer>
    toMutableSet()
    Returns a mutable snapshot of the values stored in the current set.

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Field Details

    • MAX_OID_TO_STORE_IN_BITSET

      private static final int MAX_OID_TO_STORE_IN_BITSET
      Maximal Oid that will bs stored in BitSet. If Oid exceeds this value, then it will be stored in Set<Int> only. In theory, Oids can be up to 32bit, so we want to limit per-connection memory utilization. Allow BitSet to consume up to 8KiB (one for send and one for receive).
      See Also:

    • set

      private Set<Integer> set
      Contains values outside [0..MAX_OID_TO_STORE_IN_BITSET] range. This field is null if bitSet contains all the values.

    • bitSet

      private final BitSet bitSet
      Contains values in range of [0..MAX_OID_TO_STORE_IN_BITSET].

  • Constructor Details

    • IntSet

      public IntSet()

  • Method Details

    • clear

      public void clear()
      Clears the contents of the set.

    • addAll

      public void addAll(Collection<? extends Integer> values)
      Adds all the values to the set.
      Parameters:
      values - set of values to add

    • add

      public boolean add(int value)
      Adds a single value to the set.
      Parameters:
      value - value to add
      Returns:
      true if the set did not already contain the specified value

    • remove

      public boolean remove(int value)
      Removes a value from the set.
      Parameters:
      value - value to remove
      Returns:
      true if the element was

    • contains

      public boolean contains(int value)
      Checks if a given value belongs to the set.
      Parameters:
      value - value to check
      Returns:
      true if the value belons to the set

    • toMutableSet

      public Set<Integer> toMutableSet()
      Returns a mutable snapshot of the values stored in the current set.
      Returns:
      a mutable snapshot of the values stored in the current set