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## org.tmatesoft.svn.core
Class SVNMergeRangeList

    java.lang.Object
      org.tmatesoft.svn.core.SVNMergeRangeList

public class SVNMergeRangeList
extends Object

The SVNMergeRangeList represents an array of merge ranges applied to a single target. Provides addition functionality to operate with merge range lists.

Since:
  1.2
Version:
  1.3
Author:
  TMate Software Ltd.

Field Summary
`static String` | `MERGE_INFO_NONINHERITABLE_STRING` A string that is used in mergeinfo to mark the mergeinfo as being non-inheritable.

Constructor Summary
`SVNMergeRangeList(long start, long end, boolean inheritable)` Creates a new merge range list initializing it with a single merge range which parameters are passed to this constructor.
`SVNMergeRangeList(SVNMergeRange range)` Creates a new merge range list initializing it with the specified single merge range.
`SVNMergeRangeList(SVNMergeRange[] ranges)` Creates a new merge range list initializing it with an array of merge ranges.

Method Summary
`SVNMergeRangeList` | `diff(SVNMergeRangeList eraserRangeList, boolean considerInheritance)` Removes `eraserRangeList` (the subtrahend) from this range list (the minuend), and places the resulting difference into a new `SVNMergeRangeList` object.
`SVNMergeRangeList` | `dup()` Makes a copy of this merge range list.
`static SVNMergeRangeList` | `fromCollection(Collection mergeRanges)` Creates a new `SVNMergeRangeList` from a collection of `merge ranges`.
`SVNMergeRangeList` | `getInheritableRangeList(long startRev, long endRev)` Returns a sublist of this range list which excludes all non-inheritable merge ranges.
`SVNMergeRange[]` | `getRanges()` Returns an array of `SVNMergeRange` ranges backed by this merge range list object.
`List` | `getRangesAsList()` Returns a list of merge ranges backed by this merge range list.
`int` | `getSize()` Returns number of merge ranges stored in this merge range list.
`boolean` | `includes(long revision)` Runs through all merge ranges in this object and says, whether the specified `revision` falls between start and end revision of any of those ranges.
`SVNMergeRangeList` | `intersect(SVNMergeRangeList rangeList, boolean considerInheritance)` Finds the intersection of this range list and `rangeList` and places the result into a new `SVNMergeRangeList` object.
`boolean` | `isEmpty()` Checks whether this merge range list has no merge ranges.
`SVNMergeRangeList` | `merge(SVNMergeRangeList rangeList)` Merges two range lists placing the results into a new `SVNMergeRangeList` object.
`void` | `pushRange(long start, long end, boolean inheritable)` Appends a new merge range to the end of the ranges list.
`SVNMergeRangeList` | `reverse()` Reverses this range list, and the start and end fields of each range in this range list, in place.
`void` | `setRanges(SVNMergeRange[] ranges)` Replaces the array of `SVNMergeRange` objects backed by this object with a new one.
`String` | `toString()` Returns a string representation of this object.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Field Detail

### MERGE_INFO_NONINHERITABLE_STRING

    public static String MERGE_INFO_NONINHERITABLE_STRING

  A string that is used in mergeinfo to mark the mergeinfo as being non-inheritable.

Constructor Detail

### SVNMergeRangeList

    public SVNMergeRangeList(long start,
                             long end,
                             boolean inheritable)

  Creates a new merge range list initializing it with a single merge range which parameters are passed to this constructor.

Parameters:
  `start` - merge range start revision
  `end` - merge range end revision
  `inheritable` - inheritance information

### SVNMergeRangeList

    public SVNMergeRangeList(SVNMergeRange range)

  Creates a new merge range list initializing it with the specified single merge range.

Parameters:
  `range` - merge range

### SVNMergeRangeList

    public SVNMergeRangeList(SVNMergeRange[] ranges)

  Creates a new merge range list initializing it with an array of merge ranges.

  Note: `ranges` are not copied to a separate array but stored immediately, as is.

Parameters:
  `ranges` - merge ranges array

Method Detail

### setRanges

    public void setRanges(SVNMergeRange[] ranges)

  Replaces the array of `SVNMergeRange` objects backed by this object with a new one. This method was introduced because of purposes of convenience. Use this method with care as it changes the internal state of this `SVNMergeRangeList` object.

  Parameters:
    `ranges` - new merge ranges array
  Since:
    1.2.2

### getRanges

    public SVNMergeRange[] getRanges()

  Returns an array of `SVNMergeRange` ranges backed by this merge range list object.

  Note: this method does not make a copy of the original array, instead it returns the original array itself. If you want a safe copy of merge ranges, use `getRangesAsList()` instead.

  Note: merge ranges returned in the array are not copied.

  Returns:
    array of merge ranges

### getRangesAsList

    public List getRangesAsList()

  Returns a list of merge ranges backed by this merge range list.

  Note: ranges themselves are not copied but placed in the list as is.

  Returns:
    a new list instance containing all of the ranges stored in this merge range list

### pushRange

    public void pushRange(long start,
                          long end,
                          boolean inheritable)

  Appends a new merge range to the end of the ranges list. A new `SVNMergeRange` is created used the parameters passed to this method.

  Parameters:
    `start` - merge range start revision
    `end` - merge range end revision
    `inheritable` - inheritance information

### getSize

    public int getSize()

  Returns number of merge ranges stored in this merge range list.

  Returns:
    number of merge ranges

### isEmpty

    public boolean isEmpty()

  Checks whether this merge range list has no merge ranges.

  Returns:
    true if this merge range list is empty; otherwise false

### dup

    public SVNMergeRangeList dup()

  Makes a copy of this merge range list. All merge ranges stored in this list will be copied to a new array which will be covered into a new `SVNMergeRangeList` instance.

  Returns:
    copy of this merge range list

### merge

    public SVNMergeRangeList merge(SVNMergeRangeList rangeList)
                            throws SVNException

  Merges two range lists placing the results into a new `SVNMergeRangeList` object. Either range list may be empty.

  When intersecting range lists are merged, the inheritability of the resulting `SVNMergeRange` depends on the inheritability of the operands. If two non-inheritable ranges are merged the result is always non-inheritable, in all other cases the resulting range is inheritable.

  Note: range lists must be sorted in ascending order. The return range list is guaranteed to remain in sorted order and be compacted to the minimal number of ranges needed to represent the merged result.

  Note: this method does not change the state of this object. Instead it produces a result in a new object.

  Parameters:
    `rangeList` - range list to merge with
  Returns:
    resultant range list
  Throws:
    `SVNException`

### toString

    public String toString()

  Returns a string representation of this object.

  Returns:
    this object as a string

### diff

    public SVNMergeRangeList diff(SVNMergeRangeList eraserRangeList,
                                  boolean considerInheritance)

  Removes `eraserRangeList` (the subtrahend) from this range list (the minuend), and places the resulting difference into a new `SVNMergeRangeList` object.

  Parameters:
    `eraserRangeList` - ranges to remove from this range list
    `considerInheritance` - whether inheritance information should be taken into account
  Returns:
    the resultant difference

### intersect

    public SVNMergeRangeList intersect(SVNMergeRangeList rangeList,
                                       boolean considerInheritance)

  Finds the intersection of this range list and `rangeList` and places the result into a new `SVNMergeRangeList` object.

  Parameters:
    `rangeList` - range list to intersect with
    `considerInheritance` - whether inheritance information should be taken into account
  Returns:
    the result of intersection

### includes

    public boolean includes(long revision)

  Runs through all merge ranges in this object and says, whether the specified `revision` falls between start and end revision of any of those ranges.

  Parameters:
    `revision` - revision to find in ranges
  Returns:
    true if one of the ranges in this list includes the specified `revision`

### reverse

    public SVNMergeRangeList reverse()

  Reverses this range list, and the start and end fields of each range in this range list, in place.

  Returns:
    this object itself

### getInheritableRangeList

    public SVNMergeRangeList getInheritableRangeList(long startRev,
                                                     long endRev)

  Returns a sublist of this range list which excludes all non-inheritable merge ranges. If `startRev` and `endRev` are `valid` revisions and `startRev` is less than or equal to `endRev`, then excludes only the non-inheritable revision ranges that intersect inclusively with the range defined by `startRev` and `endRev`. If this range list contains no elements, returns an empty array.

  Parameters:
    `startRev` - start revision
    `endRev` - end revision
  Returns:
    a new `SVNMergeRangeList` object with only inheritable ranges from this range list

### fromCollection

    public static SVNMergeRangeList fromCollection(Collection mergeRanges)

  Creates a new `SVNMergeRangeList` from a collection of `merge ranges`.

  Parameters:
    `mergeRanges` - merge ranges collection
  Returns:
    merge range list containing all the ranges from `mergeRanges`

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