Package org.geotools.util

Class RangeSet<T extends Comparable<? super T>>

Object
AbstractCollection<E>
AbstractSet<Range<T>>
RangeSet<T>
Type Parameters:
T - The type of range elements.
All Implemented Interfaces:
Serializable, Cloneable, Iterable<Range<T>>, Collection<Range<T>>, Set<Range<T>>, SortedSet<Range<T>>, Cloneable
public class RangeSet<T extends Comparable<? super T>> extends AbstractSet<Range<T>> implements SortedSet<Range<T>>, Cloneable, Serializable
An ordered set of ranges. RangeSet objects store an arbitrary number of ranges in any Java's primitives (int, float, etc.) or any comparable objects. Ranges may be added in any order. When a range is added, RangeSet first looks for an existing range overlapping the specified range. If an overlapping range is found, ranges are merged as of Range.union(org.geotools.util.Range<?>). Consequently, ranges returned by iterator() may not be the same than added ranges.

All entries in this set can be seen as Range objects. This class is not thread-safe.

Since:
2.0
Author:
Martin Desruisseaux (IRD), Andrea Aime
See Also:

  • Constructor Details

  • Method Details

    • comparator

      public Comparator<Range<T>> comparator()
      Returns the comparator associated with this sorted set.
      Specified by:
      comparator in interface SortedSet<T extends Comparable<? super T>>

    • clear

      public void clear()
      Remove all elements from this set of ranges.
      Specified by:
      clear in interface Collection<T extends Comparable<? super T>>
      Specified by:
      clear in interface Set<T extends Comparable<? super T>>
      Overrides:
      clear in class AbstractCollection<Range<T extends Comparable<? super T>>>

    • size

      public int size()
      Returns the number of ranges in this set.
      Specified by:
      size in interface Collection<T extends Comparable<? super T>>
      Specified by:
      size in interface Set<T extends Comparable<? super T>>
      Specified by:
      size in class AbstractCollection<Range<T extends Comparable<? super T>>>

    • add

      public boolean add(Range<T> range)
      Add a range to this set. Range may be added in any order. If the specified range overlap an existing range, the two range will be merged as of Range.union(org.geotools.util.Range<?>).

      Note: current version do not support open interval (i.e. Range.is[Min/Max]Included() must return true).

      Specified by:
      add in interface Collection<T extends Comparable<? super T>>
      Specified by:
      add in interface Set<T extends Comparable<? super T>>
      Overrides:
      add in class AbstractCollection<Range<T extends Comparable<? super T>>>
      Parameters:
      range - The range to add.
      Returns:
      true if this set changed as a result of the call.

    • add

      public <N> boolean add(Comparable<? super N> min, Comparable<? super N> max) throws IllegalArgumentException
      Adds a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      min - The lower value, inclusive.
      max - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • add

      public boolean add(byte lower, byte upper) throws IllegalArgumentException
      Add a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      lower - The lower value, inclusive.
      upper - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • add

      public boolean add(short lower, short upper) throws IllegalArgumentException
      Add a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      lower - The lower value, inclusive.
      upper - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • add

      public boolean add(int lower, int upper) throws IllegalArgumentException
      Add a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      lower - The lower value, inclusive.
      upper - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • add

      public boolean add(long lower, long upper) throws IllegalArgumentException
      Add a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      lower - The lower value, inclusive.
      upper - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • add

      public boolean add(float lower, float upper) throws IllegalArgumentException
      Add a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      lower - The lower value, inclusive.
      upper - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • add

      public boolean add(double lower, double upper) throws IllegalArgumentException
      Add a range of values to this set. Range may be added in any order. If the specified range overlap an existing range, the two ranges will be merged.
      Parameters:
      lower - The lower value, inclusive.
      upper - The upper value, inclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public <N> boolean remove(Comparable<? super N> min, Comparable<? super N> max) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      min - The lower value to remove, exclusive.
      max - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public boolean remove(byte lower, byte upper) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      lower - The lower value to remove, exclusive.
      upper - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public boolean remove(short lower, short upper) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      lower - The lower value to remove, exclusive.
      upper - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public boolean remove(int lower, int upper) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      lower - The lower value to remove, exclusive.
      upper - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public boolean remove(long lower, long upper) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      lower - The lower value to remove, exclusive.
      upper - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public boolean remove(float lower, float upper) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      lower - The lower value to remove, exclusive.
      upper - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • remove

      public boolean remove(double lower, double upper) throws IllegalArgumentException
      Remove a range of values from this set. Range may be removed in any order.
      Parameters:
      lower - The lower value to remove, exclusive.
      upper - The upper value to remove, exclusive.
      Returns:
      true if this set changed as a result of the call.
      Throws:
      IllegalArgumentException - if lower is greater than upper.

    • getMinValueAsDouble

      public final double getMinValueAsDouble(int index) throws IndexOutOfBoundsException, ClassCastException
      Returns a range's minimum value as a double. The index can be any value from 0 inclusive to the set's size exclusive. The returned values always increase with index.
      Parameters:
      index - The range index, from 0 inclusive to size exclusive.
      Returns:
      The minimum value for the range at the specified index.
      Throws:
      IndexOutOfBoundsException - if index is out of bounds.
      ClassCastException - if range elements are not convertible to numbers.

    • getMaxValueAsDouble

      public final double getMaxValueAsDouble(int index) throws IndexOutOfBoundsException, ClassCastException
      Returns a range's maximum value as a double. The index can be any value from 0 inclusive to the set's size exclusive. The returned values always increase with index.
      Parameters:
      index - The range index, from 0 inclusive to size exclusive.
      Returns:
      The maximum value for the range at the specified index.
      Throws:
      IndexOutOfBoundsException - if index is out of bounds.
      ClassCastException - if range elements are not convertible to numbers.

    • indexOfRange

      public <R> int indexOfRange(Comparable<R> value)
      If the specified value is inside a range, returns the index of this range. Otherwise, returns -1.
      Parameters:
      value - The value to search.
      Returns:
      The index of the range which contains this value, or -1 if there is no such range.

    • contains

      public boolean contains(Object object)
      Returns true if this set contains the specified element.
      Specified by:
      contains in interface Collection<T extends Comparable<? super T>>
      Specified by:
      contains in interface Set<T extends Comparable<? super T>>
      Overrides:
      contains in class AbstractCollection<Range<T extends Comparable<? super T>>>
      Parameters:
      object - The object to compare to this set.
      Returns:
      true if the given object is equals to this set.

    • first

      public Range<T> first() throws NoSuchElementException
      Returns the first (lowest) range currently in this sorted set.
      Specified by:
      first in interface SortedSet<T extends Comparable<? super T>>
      Throws:
      NoSuchElementException - if the set is empty.

    • last

      public Range<T> last() throws NoSuchElementException
      Returns the last (highest) range currently in this sorted set.
      Specified by:
      last in interface SortedSet<T extends Comparable<? super T>>
      Throws:
      NoSuchElementException - if the set is empty.

    • subSet

      public SortedSet<Range<T>> subSet(Range<T> lower, Range<T> upper)
      Returns a view of the portion of this sorted set whose elements range from lower, inclusive, to upper, exclusive.
      Specified by:
      subSet in interface SortedSet<T extends Comparable<? super T>>
      Parameters:
      lower - Low endpoint (inclusive) of the sub set.
      upper - High endpoint (exclusive) of the sub set.
      Returns:
      A view of the specified range within this sorted set.

    • headSet

      public SortedSet<Range<T>> headSet(Range<T> upper)
      Returns a view of the portion of this sorted set whose elements are strictly less than upper.
      Specified by:
      headSet in interface SortedSet<T extends Comparable<? super T>>
      Parameters:
      upper - High endpoint (exclusive) of the headSet.
      Returns:
      A view of the specified initial range of this sorted set.

    • tailSet

      public SortedSet<Range<T>> tailSet(Range<T> lower)
      Returns a view of the portion of this sorted set whose elements are greater than or equal to lower.
      Specified by:
      tailSet in interface SortedSet<T extends Comparable<? super T>>
      Parameters:
      lower - Low endpoint (inclusive) of the tailSet.
      Returns:
      A view of the specified final range of this sorted set.

    • iterator

      public Iterator<Range<T>> iterator()
      Returns an iterator over the elements in this set of ranges. All elements are Range objects.
      Specified by:
      iterator in interface Collection<T extends Comparable<? super T>>
      Specified by:
      iterator in interface Iterable<T extends Comparable<? super T>>
      Specified by:
      iterator in interface Set<T extends Comparable<? super T>>
      Specified by:
      iterator in class AbstractCollection<Range<T extends Comparable<? super T>>>

    • hashCode

      public int hashCode()
      Returns a hash value for this set of ranges. This value need not remain consistent between different implementations of the same class.
      Specified by:
      hashCode in interface Collection<T extends Comparable<? super T>>
      Specified by:
      hashCode in interface Set<T extends Comparable<? super T>>
      Overrides:
      hashCode in class AbstractSet<Range<T extends Comparable<? super T>>>

    • equals

      public boolean equals(Object object)
      Compares the specified object with this set of ranges for equality.
      Specified by:
      equals in interface Collection<T extends Comparable<? super T>>
      Specified by:
      equals in interface Set<T extends Comparable<? super T>>
      Overrides:
      equals in class AbstractSet<Range<T extends Comparable<? super T>>>
      Parameters:
      object - The object to compare with this range.
      Returns:
      true if the given object is equals to this range.

    • clone

      public RangeSet clone()
      Returns a clone of this range set.
      Specified by:
      clone in interface Cloneable
      Overrides:
      clone in class Object
      Returns:
      A clone of this range set.
      See Also:

    • toString

      public String toString()
      Returns a string representation of this set of ranges. The returned string is implementation dependent. It is usually provided for debugging purposes.
      Overrides:
      toString in class AbstractCollection<Range<T extends Comparable<? super T>>>