public long SearchFirst(TKey key, ISortComparer <TKey, TValue> comparer)
{
int blockNum = FindFirstBlock(key, comparer);
long sr;
if (blockNum < 0)
{
// Guarenteed not found in any blocks so return start of insert block
blockNum = (-(blockNum + 1)); // - 1;
sr = -1;
}
else
{
// We got a block, so find out if it's in the block or not.
var block = Blocks[blockNum];
// Try and find it in the block,
sr = block.SearchFirst(key, comparer);
}
long offset = 0;
for (int i = 0; i < blockNum; ++i)
{
var block = Blocks[i];
offset += block.Count;
}
return(sr >= 0 ? offset + sr : -offset + sr);
}
/// <inheritdoc/>
public long BinarySearch(TKey key, ISortComparer <TKey, TValue> comparer)
{
var arr = GetArray(true);
long low = 0;
long high = count - 1;
while (low <= high)
{
var mid = (low + high) / 2;
int cmp = comparer.Compare(arr[mid], key);
if (cmp < 0)
{
low = mid + 1;
}
else if (cmp > 0)
{
high = mid - 1;
}
else
{
return(mid); // key found
}
}
return(-(low + 1)); // key not found.
}
public TValue RemoveSort(TKey key, TValue value, ISortComparer <TKey, TValue> comparer)
{
CheckImmutable();
// Find the range of blocks that the value is in.
int origBlockIndex = FindFirstBlock(key, comparer);
int blockIndex = origBlockIndex;
int lastBlockIndex = Blocks.Count - 1;
if (blockIndex < 0)
{
// Not found in a block,
throw new InvalidOperationException("Value (" + key + ") was not found in the list.");
}
var block = Blocks[blockIndex];
var i = block.IndexOf(value);
while (i == -1)
{
// If not found, go to next block
++blockIndex;
if (blockIndex > lastBlockIndex)
{
throw new InvalidOperationException("Value (" + key + ") was not found in the list.");
}
block = Blocks[blockIndex];
// Try and find the value within this block
i = block.IndexOf(value);
}
// Remove value from the block,
return(RemoveFromBlock(blockIndex, block, i));
}
/// <summary>
/// Uses a binary search algorithm to quickly determine the collection of the
/// <see cref="ICollectionBlock{TKey,TValue}"/> within 'blocks' of the block
/// that contains the given key value using the <see cref="ISortComparer{TKey,TValue}"/>
/// as a lookup comparator.
/// </summary>
/// <param name="key"></param>
/// <param name="comparer"></param>
/// <returns></returns>
private int FindBlockContaining(TKey key, ISortComparer <TKey, TValue> comparer)
{
if (Count == 0)
{
return(-1);
}
int low = 0;
int high = Blocks.Count - 1;
while (low <= high)
{
int mid = (low + high) / 2;
var block = Blocks[mid];
// Is what we are searching for lower than the bottom value?
if (comparer.Compare(block.Bottom, key) > 0)
{
high = mid - 1;
}
// No, then is it greater than the highest value?
else if (comparer.Compare(block.Top, key) < 0)
{
low = mid + 1;
}
// Must be inside this block then!
else
{
return(mid);
}
}
return(-(low + 1)); // key not found.
}
/// <summary>
/// Uses a binary search algorithm to quickly determine the collection of
/// the <see cref="ICollectionBlock{TKey,TValue}"/> within 'blocks' of the block
/// that contains the given key value using the <see cref="ISortComparer{TKey,TValue}"/>
/// as a lookup comparator.
/// </summary>
/// <param name="key"></param>
/// <param name="comparer"></param>
/// <returns></returns>
private int FindLastBlock(TKey key, ISortComparer <TKey, TValue> comparer)
{
if (Count == 0)
{
return(-1);
}
int low = 0;
int high = Blocks.Count - 1;
while (low <= high)
{
if (high - low <= 2)
{
for (int i = high; i >= low; --i)
{
var block1 = Blocks[i];
if (comparer.Compare(block1.Bottom, key) <= 0)
{
if (comparer.Compare(block1.Top, key) >= 0)
{
return(i);
}
return(-(i + 1) - 1);
}
}
return(-(low + 1));
}
int mid = (low + high) / 2;
var block = Blocks[mid];
// Is what we are searching for lower than the bottom value?
if (comparer.Compare(block.Bottom, key) > 0)
{
high = mid - 1;
}
// No, then is it greater than the highest value?
else if (comparer.Compare(block.Top, key) < 0)
{
low = mid + 1;
}
// Equal, so highest must be someplace between mid and high.
else
{
low = mid;
if (low == high)
{
return(low);
}
}
}
return(-(low + 1)); // key not found.
}
public InsertSearchIndex(IndexInfo indexInfo, ITable table, IEnumerable <long> rows)
: base(indexInfo, table)
{
comparer = new IndexComparer(this);
list = new SortedCollection <IndexKey, long>();
if (rows != null)
{
foreach (var row in rows)
{
list.Add(row);
}
}
}
public bool Contains(TKey key, ISortComparer <TKey, TValue> comparer)
{
int blockIndex = FindBlockContaining(key, comparer);
if (blockIndex < 0)
{
// We didn't find in the list, so return false.
return(false);
}
// We got a block, so find out if it's in the block or not.
var block = Blocks[blockIndex];
// Find, if not there then return false.
return(block.BinarySearch(key, comparer) >= 0);
}
public SortableBindingList(IEnumerable <T> contents, ISortComparer <T> comparer)
{
if (contents != null)
{
AddList(contents);
}
if (comparer == null)
{
SortComparer = new GenericSortComparer <T>();
}
else
{
SortComparer = comparer;
}
}
public static void Sort(this int[][] targetArray, ISortComparer comparer, ISorter sorter)
{
if (targetArray == null)
{
throw new ArgumentNullException("targetArray");
}
if (comparer == null)
{
throw new ArgumentNullException("comparer");
}
if (sorter == null)
{
throw new ArgumentNullException("sorter");
}
sorter.Sort(targetArray, comparer.Compare);
}
/// <summary>
/// Sorts the ListView by the specified column.
/// </summary>
/// <param name="column"></param>
public void Sort(int column)
{
// Toggle ASC and DESC
if (column == lastsortcolumn)
{
if (sortorder == VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending)
{
sortorder = VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Descending;
}
else
{
sortorder = VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending;
}
}
else
{
sortorder = VelerSoftware.SZC.ListViewStored.Collections.SortOrder.Ascending;
}
lastsortcolumn = column;
// Get the columns comparer (if the column ist registered use the StringComparer by default)
ISortComparer c = null;
if (comparercollection.ContainsKey(this.ListView.Columns[column].Text))
{
c = comparercollection[this.ListView.Columns[column].Text];
}
else
{
c = new VelerSoftware.SZC.ListViewStored.Collections.NameComparer();
}
// Initialize the ListViewItemComparer
ListViewItemComparer lvc = new ListViewItemComparer(column, c);
lvc.SortOrder = sortorder;
this.ListView.ListViewItemSorter = lvc;
// Sort!
this.ListView.Sort();
// Set ColumnHeaders image
SetImage(column, sortorder);
}
/// <inheritdoc/>
public long SearchFirst(TKey key, ISortComparer <TKey, TValue> comparer)
{
var arr = GetArray(true);
long low = 0;
long high = count - 1;
while (low <= high)
{
if (high - low <= 2)
{
for (var i = low; i <= high; ++i)
{
int cmp1 = comparer.Compare(arr[i], key);
if (cmp1 == 0)
{
return(i);
}
if (cmp1 > 0)
{
return(-(i + 1));
}
}
return(-(high + 2));
}
var mid = (low + high) / 2;
int cmp = comparer.Compare(arr[mid], key);
if (cmp < 0)
{
low = mid + 1;
}
else if (cmp > 0)
{
high = mid - 1;
}
else
{
high = mid;
}
}
return(-(low + 1)); // key not found.
}
public void InsertSort(TKey key, TValue value, ISortComparer <TKey, TValue> comparer)
{
CheckImmutable();
int blockIndex = FindLastBlock(key, comparer);
if (blockIndex < 0)
{
// Not found a block,
// The block to insert the value,
blockIndex = (-(blockIndex + 1)) - 1;
if (blockIndex < 0)
{
blockIndex = 0;
}
}
// We got a block, so find out if it's in the block or not.
var block = Blocks[blockIndex];
// The point to insert in the block,
var i = block.SearchLast(key, comparer);
if (i < 0)
{
i = -(i + 1);
}
else
{
i = i + 1;
// NOTE: A block can never become totally full so it's always okay to
// skip one ahead.
}
// Insert value into the block,
InsertIntoBlock(value, blockIndex, block, i);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="column"></param>
/// <param name="comparer"></param>
public ListViewItemComparer(int column, ISortComparer comparer)
{
col = column;
this.comparer = comparer;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="comparer"></param>
public ListViewItemComparer(ISortComparer comparer)
{
col = 0;
this.comparer = comparer;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="column"></param>
/// <param name="comparer"></param>
public ListViewItemComparer(int column, ISortComparer comparer)
{
col = column;
this.comparer = comparer;
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="comparer"></param>
public ListViewItemComparer(ISortComparer comparer)
{
col = 0;
this.comparer = comparer;
}