/// <summary>
/// Add a new collection. Check if name the not exists
/// </summary>
public CollectionPage Add(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
//TODO why? if(!Regex.IsMatch(name, CollectionPage.NAME_PATTERN)) throw new LiteException("Invalid collection name. Use only letters, numbers and _");
var pages = _pager.GetSeqPages <CollectionPage>(1); // PageID 1 = Master Collection
if (pages.FirstOrDefault(x => x.CollectionName.Equals(name, StringComparison.InvariantCultureIgnoreCase)) != null)
{
throw new ArgumentException("Collection name already exists (names are case unsensitive)");
}
if (pages.Count() >= CollectionPage.MAX_COLLECTIONS)
{
throw new LiteException("This database exceded max collections: " + CollectionPage.MAX_COLLECTIONS);
}
var col = _pager.NewPage <CollectionPage>(pages.Last());
col.CollectionName = name;
col.IsDirty = true;
// create PK index
var pk = _indexer.CreateIndex(col.PK);
pk.Field = "_id";
pk.Unique = true;
return(col);
}
/// <summary>
/// Add a new collection. Check if name the not exists
/// </summary>
public CollectionPage Add(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException(nameof(name));
}
if (!CollectionPage.NamePattern.IsMatch(name))
{
throw LiteException.InvalidFormat(name);
}
_log.Write(Logger.COMMAND, "creating new collection '{0}'", name);
// get header marked as dirty because I will use header after (and NewPage can get another header instance)
var header = _pager.GetPage <HeaderPage>(0);
// check limit count (8 bytes per collection = 4 to string length, 4 for uint pageID)
if (header.CollectionPages.Sum(x => x.Key.Length + 8) + name.Length + 8 >= CollectionPage.MAX_COLLECTIONS_SIZE)
{
throw LiteException.CollectionLimitExceeded(CollectionPage.MAX_COLLECTIONS_SIZE);
}
// get new collection page (marked as dirty)
var col = _pager.NewPage <CollectionPage>();
// add this page to header page collection
header.CollectionPages.Add(name, col.PageID);
col.CollectionName = name;
// set header page as dirty
_pager.SetDirty(header);
// create PK index
var pk = _indexer.CreateIndex(col);
pk.Field = "_id";
pk.Expression = "$._id";
pk.Unique = true;
return(col);
}
/// <summary>
/// Add a new collection. Check if name the not exists
/// </summary>
public CollectionPage Add(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
if (!CollectionPage.NamePattern.IsMatch(name))
{
throw LiteException.InvalidFormat("CollectionName", name);
}
// get header marked as dirty because I will use header after (and NewPage can get another header instance)
var header = _pager.GetPage <HeaderPage>(0, true);
// check limit count
if (header.CollectionPages.Count >= CollectionPage.MAX_COLLECTIONS)
{
throw LiteException.CollectionLimitExceeded(CollectionPage.MAX_COLLECTIONS);
}
// get new collection page (marked as dirty)
var col = _pager.NewPage <CollectionPage>();
// add this page to header page collection
header.CollectionPages.Add(name.Trim().ToLower(), col.PageID);
col.CollectionName = name;
// create PK index
var pk = _indexer.CreateIndex(col);
pk.Field = "_id";
pk.Options = new IndexOptions {
Unique = true
};
return(col);
}
/// <summary>
/// Add a new collection. Check if name the not exists
/// </summary>
public CollectionPage Add(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
if (!CollectionPage.NamePattern.IsMatch(name))
{
throw LiteException.InvalidFormat("CollectionName", name);
}
// test collection limit
var pages = _pager.GetSeqPages <CollectionPage>(_cache.Header.FirstCollectionPageID);
if (pages.Count() >= CollectionPage.MAX_COLLECTIONS)
{
throw LiteException.CollectionLimitExceeded(CollectionPage.MAX_COLLECTIONS);
}
var col = _pager.NewPage <CollectionPage>();
// add page in collection list
_pager.AddOrRemoveToFreeList(true, col, _cache.Header, ref _cache.Header.FirstCollectionPageID);
col.CollectionName = name;
col.IsDirty = true;
// create PK index
var pk = _indexer.CreateIndex(col);
pk.Field = "_id";
pk.Options = new IndexOptions {
Unique = true
};
return(col);
}