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Added assets service method AssetsExist(), which returns whether the given list of assets exist.

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This method is used to optimize sending assets with embedded assets: e.g., when a Hypergrid visitor takes an item into the inventory.
This commit is contained in:
Oren Hurvitz
2014-03-31 11:53:12 +03:00
parent ac16a667e1
commit d1c3f8eef5
25 changed files with 579 additions and 179 deletions
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37
OpenSim/Data/SQLite/SQLiteAssetData.cs
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@@ -152,7 +152,7 @@ namespace OpenSim.Data.SQLite
}
//m_log.Info("[ASSET DB]: Creating Asset " + asset.FullID.ToString());
if (ExistsAsset(asset.FullID))
if (AssetsExist(new[] { asset.FullID })[0])
{
//LogAssetLoad(asset);
@@ -214,32 +214,39 @@ namespace OpenSim.Data.SQLite
// }
/// <summary>
/// Check if an asset exist in database
/// Check if the assets exist in the database.
/// </summary>
/// <param name="uuid">The asset UUID</param>
/// <returns>True if exist, or false.</returns>
override public bool ExistsAsset(UUID uuid)
/// <param name="uuids">The assets' IDs</param>
/// <returns>For each asset: true if it exists, false otherwise</returns>
public override bool[] AssetsExist(UUID[] uuids)
{
lock (this)
if (uuids.Length == 0)
return new bool[0];
HashSet<UUID> exist = new HashSet<UUID>();
string ids = "'" + string.Join("','", uuids) + "'";
string sql = string.Format("SELECT id FROM assets WHERE id IN ({0})", ids);
lock (this)
{
using (SqliteCommand cmd = new SqliteCommand(SelectAssetSQL, m_conn))
{
cmd.Parameters.Add(new SqliteParameter(":UUID", uuid.ToString()));
using (IDataReader reader = cmd.ExecuteReader())
{
if (reader.Read())
while (reader.Read())
{
reader.Close();
return true;
}
else
{
reader.Close();
return false;
UUID id = new UUID((string)reader["UUID"]);
exist.Add(id);
}
}
}
}
bool[] results = new bool[uuids.Length];
for (int i = 0; i < uuids.Length; i++)
results[i] = exist.Contains(uuids[i]);
return results;
}
/// <summary>