whole lot more moving

OpenSim/Data/Base/BaseDataReader.cs

@@ -0,0 +1,139 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Data;
+using System.IO;
+
+namespace OpenSim.Framework.Data.Base
+{
+    public abstract class BaseDataReader
+    {
+        private readonly IDataReader m_source;
+
+        public BaseDataReader(IDataReader source)
+        {
+            m_source = source;
+        }
+
+        public object Get(string name)
+        {
+            return m_source[name];
+        }
+
+        public ushort GetUShort(string name)
+        {
+            return (ushort)m_source.GetInt32(m_source.GetOrdinal(name));
+        }
+
+        public byte GetByte(string name)
+        {
+            int ordinal = m_source.GetOrdinal(name);
+            byte value = (byte)m_source.GetInt16(ordinal);
+            return value;
+        }
+
+        public sbyte GetSByte(string name)
+        {
+            return (sbyte)m_source.GetInt16(m_source.GetOrdinal(name));
+        }
+
+        public float GetFloat(string name)
+        {
+            return m_source.GetFloat(m_source.GetOrdinal(name));
+        }
+
+        public byte[] GetBytes(string name)
+        {
+            int ordinal = m_source.GetOrdinal(name);
+
+            if (m_source.GetValue(ordinal) == DBNull.Value)
+            {
+                return null;
+            }
+
+            byte[] buffer = new byte[16384];
+
+            MemoryStream memStream = new MemoryStream();
+
+            long totalRead = 0;
+
+            int bytesRead;
+            do
+            {
+                bytesRead = (int)m_source.GetBytes(ordinal, totalRead, buffer, 0, buffer.Length);
+                totalRead += bytesRead;
+
+                memStream.Write(buffer, 0, bytesRead);
+            } while (bytesRead == buffer.Length);
+
+            return memStream.ToArray();
+        }
+
+        public string GetString(string name)
+        {
+            int ordinal = m_source.GetOrdinal(name);
+            object value = m_source.GetValue(ordinal);
+
+            if (value is DBNull)
+            {
+                return null;
+            }
+
+            return (string)value;
+        }
+
+        public bool Read()
+        {
+            return m_source.Read();
+        }
+
+        public virtual Guid GetGuid(string name)
+        {
+            return m_source.GetGuid(m_source.GetOrdinal(name));
+        }
+
+        public UInt32 GetUInt32(string name )
+        {
+            return (UInt32)GetInt32(name);
+        }
+
+        private Int32 GetInt32(string name)
+        {
+            int ordinal = m_source.GetOrdinal(name);
+            int int32 = m_source.GetInt32(ordinal);
+            return int32;            
+        }
+
+        public Int64 GetInt64(string  name)
+        {
+            int ordinal = m_source.GetOrdinal( name );
+            long int64 = m_source.GetInt64(ordinal);
+            return int64;
+        }
+    }
+}

OpenSim/Data/Base/BaseDatabaseConnector.cs

@@ -0,0 +1,142 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Data;
+using System.Data.Common;
+
+namespace OpenSim.Framework.Data.Base
+{
+    public abstract class BaseDatabaseConnector
+    {
+        protected string m_connectionString;
+
+        public BaseDatabaseConnector(string connectionString)
+        {
+            m_connectionString = connectionString;
+        }
+
+        public abstract DbConnection GetNewConnection();
+        public abstract string CreateParamName(string fieldName);
+
+        public DbCommand CreateSelectCommand(BaseTableMapper mapper, DbConnection connection, string fieldName, object key)
+        {
+            string table = mapper.TableName;
+
+            DbCommand command = connection.CreateCommand();
+
+            string conditionString = CreateCondition(mapper, command, fieldName, key);
+
+            string query =
+                String.Format("select * from {0} where {1}", table, conditionString);
+
+            command.CommandText = query;
+            command.CommandType = CommandType.Text;
+
+            return command;
+        }
+
+        public string CreateCondition(BaseTableMapper mapper, DbCommand command, string fieldName, object key)
+        {
+            string keyFieldParamName = mapper.CreateParamName(fieldName);
+
+            DbParameter param = command.CreateParameter();
+            param.ParameterName = keyFieldParamName;
+            param.Value = ConvertToDbType(key);
+            command.Parameters.Add(param);
+
+            return String.Format("{0}={1}", fieldName, keyFieldParamName);
+        }
+
+        public DbCommand CreateUpdateCommand(BaseTableMapper mapper, DbConnection connection, object rowMapper, object primaryKey)
+        {
+            string table = mapper.TableName;
+
+            List<string> fieldNames = new List<string>();
+
+            DbCommand command = connection.CreateCommand();
+
+            foreach (BaseFieldMapper fieldMapper in mapper.Schema.Fields.Values)
+            {
+                if (fieldMapper != mapper.KeyFieldMapper)
+                {
+                    fieldMapper.ExpandField(rowMapper, command, fieldNames);
+                }
+            }
+
+            List<string> assignments = new List<string>();
+
+            foreach (string field in fieldNames)
+            {
+                assignments.Add(String.Format("{0}={1}", field, mapper.CreateParamName(field)));
+            }
+
+            string conditionString = mapper.CreateCondition(command, mapper.KeyFieldMapper.FieldName, primaryKey);
+
+            command.CommandText =
+                String.Format("update {0} set {1} where {2}", table, String.Join(", ", assignments.ToArray()),
+                              conditionString);
+
+            return command;
+        }
+
+        public DbCommand CreateInsertCommand(BaseTableMapper mapper, DbConnection connection, object obj)
+        {
+            string table = mapper.TableName;
+
+            List<string> fieldNames = new List<string>();
+
+            DbCommand command = connection.CreateCommand();
+
+            foreach (BaseFieldMapper fieldMapper in mapper.Schema.Fields.Values)
+            {
+                fieldMapper.ExpandField(obj, command, fieldNames);
+            }
+
+            List<string> paramNames = new List<string>();
+
+            foreach (string field in fieldNames)
+            {
+                paramNames.Add(mapper.CreateParamName(field));
+            }
+
+            command.CommandText =
+                String.Format("insert into {0} ({1}) values ({2})", table, String.Join(", ", fieldNames.ToArray()),
+                              String.Join(", ", paramNames.ToArray()));
+
+            return command;
+        }
+
+        public virtual object ConvertToDbType(object value)
+        {
+            return value;
+        }
+
+        public abstract BaseDataReader CreateReader(IDataReader reader);
+    }
+}

OpenSim/Data/Base/BaseFieldMapper.cs

@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Collections.Generic;
+using System.Data.Common;
+
+namespace OpenSim.Framework.Data.Base
+{  
+    public delegate TField ObjectGetAccessor<TObj, TField>(TObj obj);
+    public delegate void ObjectSetAccessor<TObj, TField>(TObj obj, TField value);
+
+    public abstract class BaseFieldMapper
+    {
+        private readonly BaseTableMapper m_tableMapper;
+        private readonly string m_fieldName;
+
+        public string FieldName
+        {
+            get { return m_fieldName; }
+        }
+
+        protected Type m_valueType;
+
+        public Type ValueType
+        {
+            get { return m_valueType; }
+        }
+
+        public abstract object GetParamValue(object obj);
+
+        public BaseFieldMapper(BaseTableMapper tableMapper, string fieldName, Type valueType)
+        {
+            m_fieldName = fieldName;
+            m_valueType = valueType;
+            m_tableMapper = tableMapper;
+        }
+
+        public abstract void SetPropertyFromReader(object mapper, BaseDataReader reader);
+
+        public void RawAddParam(DbCommand command, List<string> fieldNames, string fieldName, object value)
+        {
+            string paramName = m_tableMapper.CreateParamName(fieldName);
+            fieldNames.Add(fieldName);
+
+            DbParameter param = command.CreateParameter();
+            param.ParameterName = paramName;
+            param.Value = value;
+
+            command.Parameters.Add(param);
+        }
+
+        public virtual void ExpandField<TObj>(TObj obj, DbCommand command, List<string> fieldNames)
+        {
+            string fieldName = FieldName;
+            object value = GetParamValue(obj);
+
+            RawAddParam(command, fieldNames, fieldName, m_tableMapper.ConvertToDbType(value));
+        }
+
+        protected virtual object GetValue(BaseDataReader reader)
+        {
+            object value;
+
+            if (ValueType == typeof(Guid))
+            {
+                value = reader.GetGuid(m_fieldName);
+            }
+            else if (ValueType == typeof(bool))
+            {
+                uint boolVal = reader.GetUShort(m_fieldName);
+                value = (boolVal == 1);
+            }
+            else
+                if (ValueType == typeof(byte))
+                {
+                    value = reader.GetByte(m_fieldName);
+                }
+                else if (ValueType == typeof(sbyte))
+                {
+                    value = reader.GetSByte(m_fieldName);
+                }
+                else if (ValueType == typeof(ushort))
+                {
+                    value = reader.GetUShort(m_fieldName);
+                }
+                else if (ValueType == typeof(uint))
+                {
+                    value = reader.GetUInt32(m_fieldName);
+                }
+                else if (ValueType == typeof(byte[]))
+                {
+                    value = reader.GetBytes(m_fieldName);
+                }
+                else
+                {
+                    value = reader.Get(m_fieldName);
+                }
+
+            if (value is DBNull)
+            {
+                value = default(ValueType);
+            }
+
+            return value;
+        }
+    }
+
+    public class ObjectField<TObject, TField> : BaseFieldMapper
+    {
+        private readonly ObjectGetAccessor<TObject, TField> m_fieldGetAccessor;
+        private readonly ObjectSetAccessor<TObject, TField> m_fieldSetAccessor;
+
+        public override object GetParamValue(object obj)
+        {
+            return m_fieldGetAccessor((TObject)obj);
+        }
+
+        public override void SetPropertyFromReader(object obj, BaseDataReader reader)
+        {
+            object value;
+
+            value = GetValue(reader);
+
+            if (value == null)
+            {
+                m_fieldSetAccessor((TObject)obj, default(TField));
+            }
+            else
+            {
+                m_fieldSetAccessor((TObject)obj, (TField)value);
+            }
+        }
+
+
+        public ObjectField(BaseTableMapper tableMapper, string fieldName, ObjectGetAccessor<TObject, TField> rowMapperGetAccessor,
+                           ObjectSetAccessor<TObject, TField> rowMapperSetAccessor)
+            : base(tableMapper, fieldName, typeof(TField))
+        {
+            m_fieldGetAccessor = rowMapperGetAccessor;
+            m_fieldSetAccessor = rowMapperSetAccessor;
+        }
+    }
+}

OpenSim/Data/Base/BaseRowMapper.cs

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using OpenSim.Framework.Data.Base;
+
+namespace OpenSim.Framework.Data.Base
+{
+    public abstract class BaseRowMapper
+    {
+        public abstract void FillObject(BaseDataReader reader);
+    }
+
+    public class BaseRowMapper<TObj> : BaseRowMapper
+    {
+        private readonly BaseSchema m_schema;
+        private readonly TObj m_obj;
+
+        public TObj Object
+        {
+            get { return m_obj; }
+        }
+
+        public BaseRowMapper(BaseSchema schema, TObj obj)
+        {
+            m_schema = schema;
+            m_obj = obj;
+        }
+
+        public override void FillObject(BaseDataReader reader)
+        {
+            foreach (BaseFieldMapper fieldMapper in m_schema.Fields.Values)
+            {
+                fieldMapper.SetPropertyFromReader(this, reader);
+            }
+        }
+    }
+}

OpenSim/Data/Base/BaseSchema.cs

@@ -0,0 +1,69 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System.Collections.Generic;
+using OpenSim.Framework.Data.Base;
+
+namespace OpenSim.Framework.Data.Base
+{
+    public class BaseSchema
+    {
+        protected BaseTableMapper m_tableMapper;
+        protected Dictionary<string, BaseFieldMapper> m_mappings;
+
+        public Dictionary<string, BaseFieldMapper> Fields
+        {
+            get { return m_mappings; }
+        }
+
+        public BaseSchema(BaseTableMapper tableMapper)
+        {
+            m_mappings = new Dictionary<string, BaseFieldMapper>();
+            m_tableMapper = tableMapper;
+        }
+    }
+
+    public class BaseSchema<TObj> : BaseSchema
+    {
+        public BaseSchema(BaseTableMapper tableMapper)
+            : base(tableMapper)
+        {
+        }
+
+        public ObjectField<TObj, TField> AddMapping<TField>(string fieldName,
+                                                            ObjectGetAccessor<TObj, TField> rowMapperGetAccessor,
+                                                            ObjectSetAccessor<TObj, TField> rowMapperSetAccessor)
+        {
+            ObjectField<TObj, TField> rowMapperField =
+                new ObjectField<TObj, TField>(m_tableMapper, fieldName, rowMapperGetAccessor, rowMapperSetAccessor);
+
+            m_mappings.Add(fieldName, rowMapperField);
+
+            return rowMapperField;
+        }
+    }
+}

OpenSim/Data/Base/BaseTableMapper.cs

@@ -0,0 +1,281 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System;
+using System.Data;
+using System.Data.Common;
+using OpenSim.Framework.Data.Base;
+
+namespace OpenSim.Framework.Data.Base
+{
+    public abstract class BaseTableMapper
+    {
+        private readonly BaseDatabaseConnector m_database;
+        private readonly object m_syncRoot = new object();
+
+        protected void WithConnection(Action<DbConnection> action)
+        {
+            lock (m_syncRoot)
+            {
+                DbConnection m_connection = m_database.GetNewConnection();
+
+                if (m_connection.State != ConnectionState.Open)
+                {
+                    m_connection.Open();
+                }
+
+                action(m_connection);
+
+                if (m_connection.State == ConnectionState.Open)
+                {
+                    m_connection.Close();
+                }
+            }
+        }
+
+        private readonly string m_tableName;
+        public string TableName
+        {
+            get { return m_tableName; }
+        }
+
+        protected BaseSchema m_schema;
+        public BaseSchema Schema
+        {
+            get { return m_schema; }
+        }
+
+        protected BaseFieldMapper m_keyFieldMapper;
+        public BaseFieldMapper KeyFieldMapper
+        {
+            get { return m_keyFieldMapper; }
+        }
+
+        public BaseTableMapper(BaseDatabaseConnector database, string tableName)
+        {
+            m_database = database;
+            m_tableName = tableName.ToLower(); // Stupid MySQL hack.
+        }
+
+        public string CreateParamName(string fieldName)
+        {
+            return m_database.CreateParamName(fieldName);
+        }
+
+        protected DbCommand CreateSelectCommand(DbConnection connection, string fieldName, object primaryKey)
+        {
+            return m_database.CreateSelectCommand(this, connection, fieldName, primaryKey);
+        }
+
+        public string CreateCondition(DbCommand command, string fieldName, object key)
+        {
+            return m_database.CreateCondition(this, command, fieldName, key);
+        }
+
+        public DbCommand CreateInsertCommand(DbConnection connection, object obj)
+        {
+            return m_database.CreateInsertCommand(this, connection, obj);
+        }
+
+        public DbCommand CreateUpdateCommand(DbConnection connection, object rowMapper, object primaryKey)
+        {
+            return m_database.CreateUpdateCommand(this, connection, rowMapper, primaryKey);
+        }
+
+        public object ConvertToDbType(object value)
+        {
+            return m_database.ConvertToDbType(value);
+        }
+
+        protected virtual BaseDataReader CreateReader(IDataReader reader)
+        {
+            return m_database.CreateReader(reader);
+        }
+    }
+
+    public abstract class BaseTableMapper<TRowMapper, TPrimaryKey> : BaseTableMapper
+    {
+        public BaseTableMapper(BaseDatabaseConnector database, string tableName)
+            : base(database, tableName)
+        {
+        }
+
+        // HACK: This is a temporary function used by TryGetValue().
+        // Due to a bug in mono 1.2.6, delegate blocks cannot contain
+        // a using() block.  This has been fixed in SVN, so the next
+        // mono release should work.
+        private void TryGetConnectionValue(DbConnection connection, TPrimaryKey primaryKey, ref TRowMapper result, ref bool success)
+        {
+            using (
+                DbCommand command =
+                CreateSelectCommand(connection, KeyFieldMapper.FieldName, primaryKey))
+            {
+                using (IDataReader reader = command.ExecuteReader())
+                {
+                    if (reader.Read())
+                    {
+                        result = FromReader( CreateReader(reader));
+                        success = true;
+                    }
+                    else
+                    {
+                        success = false;
+                    }
+                }
+            }
+        }
+
+        public bool TryGetValue(TPrimaryKey primaryKey, out TRowMapper value)
+        {
+            TRowMapper result = default(TRowMapper);
+            bool success = false;
+
+            WithConnection(delegate(DbConnection connection)
+                           {
+                               TryGetConnectionValue(connection, primaryKey, ref result, ref success);
+                           });
+
+            value = result;
+
+            return success;
+        }
+
+        // HACK: This is a temporary function used by Remove().
+        // Due to a bug in mono 1.2.6, delegate blocks cannot contain
+        // a using() block.  This has been fixed in SVN, so the next
+        // mono release should work.
+        protected virtual void TryDelete(DbConnection connection, TPrimaryKey id, ref int deleted)
+        {
+            using (
+                DbCommand command =
+                CreateDeleteCommand(connection, KeyFieldMapper.FieldName, id))
+            {
+                deleted = command.ExecuteNonQuery();
+            }
+        }
+
+        public virtual bool Remove(TPrimaryKey id)
+        {
+            int deleted = 0;
+
+            WithConnection(delegate(DbConnection connection)
+                           {
+                               TryDelete(connection, id, ref deleted);
+                           });
+
+            if (deleted == 1)
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public DbCommand CreateDeleteCommand(DbConnection connection, string fieldName, TPrimaryKey primaryKey)
+        {
+            string table = TableName;
+
+            DbCommand command = connection.CreateCommand();
+
+            string conditionString = CreateCondition(command, fieldName, primaryKey);
+
+            string query =
+                String.Format("delete from {0} where {1}", table, conditionString);
+
+            command.CommandText = query;
+            command.CommandType = CommandType.Text;
+
+            return command;
+        }
+
+        // HACK: This is a temporary function used by Update().
+        // Due to a bug in mono 1.2.6, delegate blocks cannot contain
+        // a using() block.  This has been fixed in SVN, so the next
+        // mono release should work.
+        protected void TryUpdate(DbConnection connection, TPrimaryKey primaryKey, TRowMapper value, ref int updated)
+        {
+            using (DbCommand command = CreateUpdateCommand(connection, value, primaryKey))
+            {
+                updated = command.ExecuteNonQuery();
+            }
+        }
+
+        public virtual bool Update(TPrimaryKey primaryKey, TRowMapper value)
+        {
+            int updated = 0;
+
+            WithConnection(delegate(DbConnection connection)
+                           {
+                               TryUpdate(connection, primaryKey, value, ref updated);
+                           });
+
+            if (updated == 1)
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        // HACK: This is a temporary function used by Add().
+        // Due to a bug in mono 1.2.6, delegate blocks cannot contain
+        // a using() block.  This has been fixed in SVN, so the next
+        // mono release should work.
+        protected void TryAdd(DbConnection connection, TRowMapper value, ref int added)
+        {
+            using (DbCommand command = CreateInsertCommand(connection, value))
+            {
+                added = command.ExecuteNonQuery();
+            }
+        }
+
+        public virtual bool Add(TRowMapper value)
+        {
+            int added = 0;
+
+            WithConnection(delegate(DbConnection connection)
+                           {
+                               TryAdd(connection, value, ref added);
+                           });
+
+            if (added == 1)
+            {
+                return true;
+            }
+            else
+            {
+                return false;
+            }
+        }
+
+        public abstract TRowMapper FromReader(BaseDataReader reader);
+    }
+}

OpenSim/Data/Base/Properties/AssemblyInfo.cs

@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) Contributors, http://opensimulator.org/
+ * See CONTRIBUTORS.TXT for a full list of copyright holders.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of the OpenSim Project nor the
+ *       names of its contributors may be used to endorse or promote products
+ *       derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Security;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+
+[assembly : AssemblyTitle("OpenSim.Framework.Data.Base")]
+[assembly : AssemblyDescription("Generic Database Abstraction Layer")]
+[assembly : AssemblyConfiguration("")]
+[assembly : AssemblyCompany("OpenSim Project (www.opensimulator.org)")]
+[assembly: AssemblyProduct("OpenSim.Framework.Data.Base")]
+[assembly: AssemblyCopyright("Copyright (c) 2007 OpenSim Project (www.opensimulator.org)")]
+[assembly : AssemblyTrademark("")]
+[assembly : AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+
+[assembly : ComVisible(false)]
+
+// The following GUID is for the ID of the typelib if this project is exposed to COM
+
+[assembly : Guid("9269f421-19d9-4eea-bfe3-c0ffe426fada")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Revision and Build Numbers 
+// by using the '*' as shown below:
+
+[assembly : AssemblyVersion("1.0.0.0")]
+[assembly : AssemblyFileVersion("1.0.0.0")]
+[assembly : AllowPartiallyTrustedCallers]