Module inet.ipaddr

Class AddressDivisionGroupingBase

java.lang.Object
inet.ipaddr.format.AddressDivisionGroupingBase
All Implemented Interfaces:
AddressDivisionSeries, AddressItem, AddressStringDivisionSeries, Serializable, Comparable<AddressItem>
Direct Known Subclasses:
AddressDivisionGrouping, IPAddressLargeDivisionGrouping

public abstract class AddressDivisionGroupingBase extends Object implements AddressDivisionSeries
AddressDivisionGrouping objects consist of a series of AddressDivision objects, each division containing one or more segments.

AddressDivisionGrouping objects are immutable. This also makes them thread-safe.

AddressDivision objects use long to represent their values, so this places a cap on the size of the divisions in AddressDivisionGrouping.

Author:
sfoley
See Also:
  • Constructor Details

    • AddressDivisionGroupingBase

      public AddressDivisionGroupingBase(AddressDivisionBase[] divisions)
    • AddressDivisionGroupingBase

      public AddressDivisionGroupingBase(AddressDivisionBase[] divisions, boolean checkDivisions)
  • Method Details

    • getDivision

      public AddressDivisionBase getDivision(int index)
      Specified by:
      getDivision in interface AddressDivisionSeries
      Specified by:
      getDivision in interface AddressStringDivisionSeries
      Returns:
      the given division in this series. The first is at index 0.
    • getDivisionCount

      public int getDivisionCount()
      Specified by:
      getDivisionCount in interface AddressStringDivisionSeries
    • getBytes

      public byte[] getBytes()
      Gets the bytes for the lowest address in the range represented by this address.

      Since bytes are signed values while addresses are unsigned, values greater than 127 are represented as the (negative) two's complement value of the actual value. You can get the unsigned integer value i from byte b using i = 0xff & b.

      Specified by:
      getBytes in interface AddressItem
      Returns:
    • getBytes

      public byte[] getBytes(byte[] bytes, int index)
      Gets the value for the lowest address in the range represented by this address division.

      If the value fits in the specified array, the same array is returned with the value. Otherwise, a new array is allocated and returned with the value.

      You can use AddressDivisionSeries.getBitCount() to determine the required array length for the bytes.

      Since bytes are signed values while addresses are unsigned, values greater than 127 are represented as the (negative) two's complement value of the actual value. You can get the unsigned integer value i from byte b using i = 0xff & b.

      Specified by:
      getBytes in interface AddressItem
      Returns:
    • getBytes

      public byte[] getBytes(byte[] bytes)
      Equivalent to getBytes(byte[], int) with index of 0.
      Specified by:
      getBytes in interface AddressItem
      Returns:
      the bytes of the lowest address represented by this address item.
    • getUpperBytes

      public byte[] getUpperBytes()
      Gets the bytes for the highest address in the range represented by this address.
      Specified by:
      getUpperBytes in interface AddressItem
      Returns:
    • getUpperBytes

      public byte[] getUpperBytes(byte[] bytes, int index)
      Similar to getBytes(byte[], int), but for obtaining the upper value of the range. If this division represents a single value, equivalent to getBytes(byte[], int)
      Specified by:
      getUpperBytes in interface AddressItem
      Returns:
      the bytes of the largest address represented by this address item.
    • getUpperBytes

      public byte[] getUpperBytes(byte[] bytes)
      Equivalent to getBytes(byte[], int) with index of 0.
      Specified by:
      getUpperBytes in interface AddressItem
      Returns:
      the bytes of the largest address represented by this address item.
    • getValue

      public BigInteger getValue()
      Description copied from interface: AddressItem
      Returns the lowest value represented by this address item, the lowest value included in the range of values
      Specified by:
      getValue in interface AddressItem
      Returns:
      the lowest value represented by this address item
    • getUpperValue

      public BigInteger getUpperValue()
      Description copied from interface: AddressItem
      Returns the highest value represented by this address item, the highest value included in the range of values
      Specified by:
      getUpperValue in interface AddressItem
      Returns:
      the highest value represented by this address item
    • isPrefixed

      public boolean isPrefixed()
      Description copied from interface: AddressDivisionSeries
      Whether there exists a prefix length associated with this series.
      Specified by:
      isPrefixed in interface AddressDivisionSeries
    • getPrefixLength

      public Integer getPrefixLength()
      Description copied from interface: AddressDivisionSeries
      The bit-length of the portion of the address that is not specific to an individual address but common amongst a group of addresses.

      Typically this is the largest number of bits in the upper-most portion of the section for which the remaining bits assume all possible values.

      For IP addresses, this must be explicitly defined when the address is created. For example, 1.2.0.0/16 has a prefix length of 16, while 1.2.*.* has no prefix length, even though they both represent the same set of addresses and are considered equal. Prefixes can be considered variable for any given IP addresses and can depend on the routing table.

      The methods AddressItem.getMinPrefixLengthForBlock() and AddressItem.getPrefixLengthForSingleBlock() can help you to obtain or define a prefix length if one does not exist already. 1.2.0.0/16 and 1.2.*.* both the same equivalent and minimum prefix length of 16.

      For MAC addresses, the prefix is initially defined by the range, so 1:2:3:*:*:* has a prefix length of 24 by definition. Addresses derived from the original may retain the original prefix length regardless of their range.

      Specified by:
      getPrefixLength in interface AddressDivisionSeries
    • getMinPrefixLengthForBlock

      public int getMinPrefixLengthForBlock()
      Returns the smallest prefix length possible such that this address division grouping includes the block of addresses for that prefix.
      Specified by:
      getMinPrefixLengthForBlock in interface AddressItem
      Returns:
      the prefix length
    • getPrefixLengthForSingleBlock

      public Integer getPrefixLengthForSingleBlock()
      Returns a prefix length for which the range of this segment grouping matches the block of addresses for that prefix. If no such prefix exists, returns null If this segment grouping represents a single value, returns the bit length
      Specified by:
      getPrefixLengthForSingleBlock in interface AddressItem
      Returns:
      the prefix length or null
    • getCount

      public BigInteger getCount()
      gets the count of addresses that this address division grouping may represent If this address division grouping is not a subnet block of multiple addresses or has no range of values, then there is only one such address.
      Specified by:
      getCount in interface AddressDivisionSeries
      Specified by:
      getCount in interface AddressItem
      Returns:
    • getPrefixCount

      public BigInteger getPrefixCount()
      Description copied from interface: AddressDivisionSeries
      If this has a prefix length, the count of the range of values in the prefix.

      If this has no prefix length, returns the same value as AddressDivisionSeries.getCount()

      Specified by:
      getPrefixCount in interface AddressDivisionSeries
      Returns:
    • isMultiple

      public boolean isMultiple()
      Description copied from interface: AddressItem
      Whether this represents multiple potential values (eg a prefixed address or a segment representing a range of values)
      Specified by:
      isMultiple in interface AddressItem
      Returns:
      whether this address represents more than one address. Such addresses include CIDR/IP addresses (eg 1.2.3.4/11) or wildcard addresses (eg 1.2.*.4) or range addresses (eg 1.2.3-4.5)
    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Object
    • equals

      public boolean equals(Object o)
      Two groupings are equal if: - they match type/version (ipv4, ipv6, mac, or a specific grouping class) - they match division counts - each division matches bit counts - each division matches their specific grouping class - each division matches values Prefix lengths, for those groupings and/or divisionsS that have them, are ignored.
      Overrides:
      equals in class Object
    • toString

      public String toString()
      Overrides:
      toString in class Object
    • getDivisionStrings

      public String[] getDivisionStrings()
      Description copied from interface: AddressDivisionSeries
      Get standard-format strings for each of the divisions in the series.
      Specified by:
      getDivisionStrings in interface AddressDivisionSeries
      Returns:
    • isZero

      public boolean isZero()
      Description copied from interface: AddressItem
      Returns whether this item matches the value of zero
      Specified by:
      isZero in interface AddressItem
      Returns:
      whether this item matches the value of zero
    • includesZero

      public boolean includesZero()
      Description copied from interface: AddressItem
      Returns whether this item includes the value of zero within its range
      Specified by:
      includesZero in interface AddressItem
      Returns:
      whether this item includes the value of zero within its range
    • isMax

      public boolean isMax()
      Description copied from interface: AddressItem
      Returns whether this item matches the maximum possible value for the address type or version
      Specified by:
      isMax in interface AddressItem
      Returns:
      whether this item matches the maximum possible value
    • includesMax

      public boolean includesMax()
      Description copied from interface: AddressItem
      Returns whether this item includes the maximum possible value for the address type or version within its range
      Specified by:
      includesMax in interface AddressItem
      Returns:
      whether this item includes the maximum possible value within its range
    • isFullRange

      public boolean isFullRange()
      Description copied from interface: AddressItem
      whether this address item represents all possible values attainable by an address item of this type
      Specified by:
      isFullRange in interface AddressItem
      Returns:
      whether this address item represents all possible values attainable by an address item of this type, or in other words, both includesZero() and includesMax() return true
    • isSinglePrefixBlock

      public boolean isSinglePrefixBlock()
      Description copied from interface: AddressDivisionSeries
      Returns whether the range of values matches a single subnet block for the prefix length

      An important distinction of this method with AddressItem.containsSinglePrefixBlock(int) is that this method returns false if the series does not have a prefix length assigned to it, even if there exists a prefix length for which AddressItem.containsSinglePrefixBlock(int) returns true.

      Specified by:
      isSinglePrefixBlock in interface AddressDivisionSeries
      Returns:
    • isPrefixBlock

      public boolean isPrefixBlock()
      Description copied from interface: AddressDivisionSeries
      Returns whether this address segment series represents a block of addresses associated with its prefix length.

      This returns false if it has no prefix length or if it is a range of addresses that does not include the entire subnet block for the prefix length.

      If AddressNetwork.getPrefixConfiguration() is set to consider all prefixes as subnets, this returns true for any series with a prefix length.

      An important distinction of AddressItem.containsPrefixBlock(int) with this method is that this method returns false if the series does not have a prefix length assigned to it, even if there exists one or more prefix lengths for which AddressItem.containsPrefixBlock(int) returns true.

      Specified by:
      isPrefixBlock in interface AddressDivisionSeries
      Returns: