123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384 |
- using System;
- using System.Collections.Generic;
- using System.Data;
- using System.Reflection;
- using log4net;
- using System.Data.SqlClient;
- using OpenMetaverse;
- using OpenSim.Framework;
- using OpenSim.Region.Framework.Interfaces;
- using System.Text;
- namespace OpenSim.Data.MSSQL
- {
- public class MSSQLGenericTableHandler<T> where T : class, new()
- {
- protected string m_ConnectionString;
- protected MSSQLManager m_database;
- protected Dictionary<string, FieldInfo> m_Fields =
- new Dictionary<string, FieldInfo>();
- protected List<string> m_ColumnNames = null;
- protected string m_Realm;
- protected FieldInfo m_DataField = null;
- public MSSQLGenericTableHandler(string connectionString,
- string realm, string storeName)
- {
- m_Realm = realm;
-
- m_ConnectionString = connectionString;
- if (storeName != String.Empty)
- {
- using (SqlConnection conn = new SqlConnection(m_ConnectionString))
- {
- conn.Open();
- Migration m = new Migration(conn, GetType().Assembly, storeName);
- m.Update();
- }
- }
- m_database = new MSSQLManager(m_ConnectionString);
- Type t = typeof(T);
- FieldInfo[] fields = t.GetFields(BindingFlags.Public |
- BindingFlags.Instance |
- BindingFlags.DeclaredOnly);
- if (fields.Length == 0)
- return;
- foreach (FieldInfo f in fields)
- {
- if (f.Name != "Data")
- m_Fields[f.Name] = f;
- else
- m_DataField = f;
- }
- }
- private void CheckColumnNames(SqlDataReader reader)
- {
- if (m_ColumnNames != null)
- return;
- m_ColumnNames = new List<string>();
- DataTable schemaTable = reader.GetSchemaTable();
- foreach (DataRow row in schemaTable.Rows)
- {
- if (row["ColumnName"] != null &&
- (!m_Fields.ContainsKey(row["ColumnName"].ToString())))
- m_ColumnNames.Add(row["ColumnName"].ToString());
- }
- }
- private List<string> GetConstraints()
- {
- List<string> constraints = new List<string>();
- string query = string.Format(@"SELECT
- COL_NAME(ic.object_id,ic.column_id) AS column_name
- FROM sys.indexes AS i
- INNER JOIN sys.index_columns AS ic
- ON i.object_id = ic.object_id AND i.index_id = ic.index_id
- WHERE i.is_primary_key = 1
- AND i.object_id = OBJECT_ID('{0}');", m_Realm);
- using (SqlConnection conn = new SqlConnection(m_ConnectionString))
- using (SqlCommand cmd = new SqlCommand(query, conn))
- {
- conn.Open();
- using (SqlDataReader rdr = cmd.ExecuteReader())
- {
- while (rdr.Read())
- {
-
- constraints.Add((string)rdr[0]);
- }
- }
- return constraints;
- }
- }
- public virtual T[] Get(string field, string key)
- {
- return Get(new string[] { field }, new string[] { key });
- }
- public virtual T[] Get(string[] fields, string[] keys)
- {
- if (fields.Length != keys.Length)
- return new T[0];
- List<string> terms = new List<string>();
- using (SqlConnection conn = new SqlConnection(m_ConnectionString))
- using (SqlCommand cmd = new SqlCommand())
- {
- for (int i = 0; i < fields.Length; i++)
- {
- cmd.Parameters.Add(m_database.CreateParameter(fields[i], keys[i]));
- terms.Add("[" + fields[i] + "] = @" + fields[i]);
- }
- string where = String.Join(" AND ", terms.ToArray());
- string query = String.Format("SELECT * FROM {0} WHERE {1}",
- m_Realm, where);
- cmd.Connection = conn;
- cmd.CommandText = query;
- conn.Open();
- return DoQuery(cmd);
- }
- }
- protected T[] DoQuery(SqlCommand cmd)
- {
- List<T> result = new List<T>();
- using (SqlDataReader reader = cmd.ExecuteReader())
- {
- if (reader == null)
- return new T[0];
- CheckColumnNames(reader);
- while (reader.Read())
- {
- T row = new T();
- foreach (string name in m_Fields.Keys)
- {
- if (m_Fields[name].GetValue(row) is bool)
- {
- int v = Convert.ToInt32(reader[name]);
- m_Fields[name].SetValue(row, v != 0 ? true : false);
- }
- else if (m_Fields[name].GetValue(row) is UUID)
- {
- UUID uuid = UUID.Zero;
- UUID.TryParse(reader[name].ToString(), out uuid);
- m_Fields[name].SetValue(row, uuid);
- }
- else if (m_Fields[name].GetValue(row) is int)
- {
- int v = Convert.ToInt32(reader[name]);
- m_Fields[name].SetValue(row, v);
- }
- else
- {
- m_Fields[name].SetValue(row, reader[name]);
- }
- }
- if (m_DataField != null)
- {
- Dictionary<string, string> data =
- new Dictionary<string, string>();
- foreach (string col in m_ColumnNames)
- {
- data[col] = reader[col].ToString();
- if (data[col] == null)
- data[col] = String.Empty;
- }
- m_DataField.SetValue(row, data);
- }
- result.Add(row);
- }
- return result.ToArray();
- }
- }
- public virtual T[] Get(string where)
- {
- using (SqlConnection conn = new SqlConnection(m_ConnectionString))
- using (SqlCommand cmd = new SqlCommand())
- {
- string query = String.Format("SELECT * FROM {0} WHERE {1}",
- m_Realm, where);
- cmd.Connection = conn;
- cmd.CommandText = query;
-
- conn.Open();
- return DoQuery(cmd);
- }
- }
- public virtual bool Store(T row)
- {
- List<string> constraintFields = GetConstraints();
- List<KeyValuePair<string, string>> constraints = new List<KeyValuePair<string, string>>();
- using (SqlConnection conn = new SqlConnection(m_ConnectionString))
- using (SqlCommand cmd = new SqlCommand())
- {
- StringBuilder query = new StringBuilder();
- List<String> names = new List<String>();
- List<String> values = new List<String>();
- foreach (FieldInfo fi in m_Fields.Values)
- {
- names.Add(fi.Name);
- values.Add("@" + fi.Name);
-
-
-
- if (fi.GetValue(row) == null)
- throw new NullReferenceException(
- string.Format(
- "[MSSQL GENERIC TABLE HANDLER]: Trying to store field {0} for {1} which is unexpectedly null",
- fi.Name, row));
- if (constraintFields.Count > 0 && constraintFields.Contains(fi.Name))
- {
- constraints.Add(new KeyValuePair<string, string>(fi.Name, fi.GetValue(row).ToString()));
- }
- cmd.Parameters.Add(m_database.CreateParameter(fi.Name, fi.GetValue(row).ToString()));
- }
- if (m_DataField != null)
- {
- Dictionary<string, string> data =
- (Dictionary<string, string>)m_DataField.GetValue(row);
- foreach (KeyValuePair<string, string> kvp in data)
- {
- if (constraintFields.Count > 0 && constraintFields.Contains(kvp.Key))
- {
- constraints.Add(new KeyValuePair<string, string>(kvp.Key, kvp.Key));
- }
- names.Add(kvp.Key);
- values.Add("@" + kvp.Key);
- cmd.Parameters.Add(m_database.CreateParameter("@" + kvp.Key, kvp.Value));
- }
- }
- query.AppendFormat("UPDATE {0} SET ", m_Realm);
- int i = 0;
- for (i = 0; i < names.Count - 1; i++)
- {
- query.AppendFormat("[{0}] = {1}, ", names[i], values[i]);
- }
- query.AppendFormat("[{0}] = {1} ", names[i], values[i]);
- if (constraints.Count > 0)
- {
- List<string> terms = new List<string>();
- for (int j = 0; j < constraints.Count; j++)
- {
- terms.Add(" [" + constraints[j].Key + "] = @" + constraints[j].Key);
- }
- string where = String.Join(" AND ", terms.ToArray());
- query.AppendFormat(" WHERE {0} ", where);
-
- }
- cmd.Connection = conn;
- cmd.CommandText = query.ToString();
-
- conn.Open();
- if (cmd.ExecuteNonQuery() > 0)
- {
-
- return true;
- }
- else
- {
-
- query = new StringBuilder();
- query.AppendFormat("INSERT INTO {0} ([", m_Realm);
- query.Append(String.Join("],[", names.ToArray()));
- query.Append("]) values (" + String.Join(",", values.ToArray()) + ")");
- cmd.Connection = conn;
- cmd.CommandText = query.ToString();
-
- if (conn.State != ConnectionState.Open)
- conn.Open();
- if (cmd.ExecuteNonQuery() > 0)
- return true;
- }
- return false;
- }
- }
- public virtual bool Delete(string field, string key)
- {
- return Delete(new string[] { field }, new string[] { key });
- }
- public virtual bool Delete(string[] fields, string[] keys)
- {
- if (fields.Length != keys.Length)
- return false;
- List<string> terms = new List<string>();
- using (SqlConnection conn = new SqlConnection(m_ConnectionString))
- using (SqlCommand cmd = new SqlCommand())
- {
- for (int i = 0; i < fields.Length; i++)
- {
- cmd.Parameters.Add(m_database.CreateParameter(fields[i], keys[i]));
- terms.Add("[" + fields[i] + "] = @" + fields[i]);
- }
- string where = String.Join(" AND ", terms.ToArray());
- string query = String.Format("DELETE FROM {0} WHERE {1}", m_Realm, where);
- cmd.Connection = conn;
- cmd.CommandText = query;
- conn.Open();
- if (cmd.ExecuteNonQuery() > 0)
- {
-
- return true;
- }
- return false;
- }
- }
- }
- }
|