public virtual DbCommandSource CreateDbCommandForAddEntity <TEntity>(TEntity entity)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
var mapping = this.DbMappings.GetDbMapping(typeof(TEntity));
if (mapping == null)
{
throw new ArgumentException(string.Format("Cannot get the mapping of type {0}", typeof(TEntity).FullName), "TEntity");
}
var dbCommandSource = new DbCommandSource();
var sqlText = new StringBuilder();
sqlText.AppendLine("INSERT INTO {0}", mapping.TableName);
var columns = new List <string>();
foreach (var column in mapping.Columns)
{
var objVal = column.PropertyInfo.GetValue(entity, null);
if (column.IngoreOnInsert)
{
continue;
}
columns.Add(column.ColumnName);
dbCommandSource.Parameters.Add(column.ColumnName, objVal);
}
sqlText.AppendLine(" ({0})", string.Join(", ", columns));
sqlText.AppendLine(" VALUES ({0})", string.Join(", ", columns.Select(c => this.ParameterSymbol + c)));
dbCommandSource.CommandText = sqlText.ToString();
return(dbCommandSource);
}
public virtual DbCommandSource CreateDbCommandForGetList <TEntity>(object conditions = null, object order = null)
{
var mapping = this.DbMappings.GetDbMapping(typeof(TEntity));
if (mapping == null)
{
throw new ArgumentException(string.Format("Cannot get the mapping of type {0}", typeof(TEntity).FullName), "TEntity");
}
var sqlText = new StringBuilder();
sqlText.AppendLine("SELECT {0}", string.Join(", ", mapping.Columns.Select(c => c.ColumnName)));
sqlText.AppendLine(" FROM {0}", mapping.TableName);
var dbCommandSource = new DbCommandSource();
var dbCommandSourceForCondition = this.GetDbConditions(conditions);
if (dbCommandSourceForCondition != null)
{
sqlText.AppendLine(" WHERE {0}", dbCommandSourceForCondition.CommandText);
foreach (var param in dbCommandSourceForCondition.Parameters)
{
dbCommandSource.Parameters.Add(param.Key, param.Value);
}
}
var orderString = this.GetOrders(order);
if (orderString != null)
{
sqlText.AppendLine(" ORDER BY {0}", orderString);
}
dbCommandSource.CommandText = sqlText.ToString();
return(dbCommandSource);
}
public virtual DbCommand CreateDbCommand(DbCommandSource dbCommandSource)
{
var dbCommand = this.CreateDbCommand(dbCommandSource.CommandText);
foreach (var parameter in dbCommandSource.Parameters)
{
dbCommand.AppendParameter(parameter.Key, parameter.Value);
}
return(dbCommand);
}
public virtual DbCommandSource CreateDbCommandForUpdateEntity <TEntity>(TEntity entity)
{
if (entity == null)
{
throw new ArgumentNullException("entity");
}
var mapping = this.DbMappings.GetDbMapping(typeof(TEntity));
if (mapping == null)
{
throw new ArgumentException(string.Format("Cannot get the mapping of type {0}", typeof(TEntity).FullName), "TEntity");
}
var dbCommandSource = new DbCommandSource();
var sqlText = new StringBuilder();
sqlText.AppendLine("UPDATE {0}", mapping.TableName);
var columns = new List <string>();
var isFirst = true;
foreach (var column in mapping.Columns)
{
var objVal = column.PropertyInfo.GetValue(entity, null);
if (column.IsPrimaryKey)
{
columns.Add(string.Format("{0} = {1}{0}", column.ColumnName, this.ParameterSymbol));
}
else
{
if (isFirst)
{
sqlText.AppendLine(" SET {0} = {1}{0}", column.ColumnName, this.ParameterSymbol);
isFirst = false;
}
else
{
sqlText.AppendLine(" ,{0} = {1}{0}", column.ColumnName, this.ParameterSymbol);
}
}
dbCommandSource.Parameters.Add(column.ColumnName, objVal);
}
if (columns != null && columns.Any())
{
sqlText.AppendLine(" WHERE {0}", string.Join(" AND ", columns));
}
else
{
throw new ArgumentException(string.Format("The type {0} must has one or more primary key(s)", typeof(TEntity).FullName), "TEntity");
}
dbCommandSource.CommandText = sqlText.ToString();
return(dbCommandSource);
}
public virtual DbCommandSource CreateDbCommandForDeleteEntity(string tableName, object conditions = null)
{
if (string.IsNullOrWhiteSpace(tableName))
{
throw new ArgumentNullException("tableName");
}
var dbCommandSource = new DbCommandSource();
var sqlText = new StringBuilder();
sqlText.AppendLine("DELETE FROM {0}", tableName);
var columns = new List <string>();
var isFirst = true;
if (conditions != null)
{
if (conditions is string)
{
sqlText.AppendLine(" WHERE {0}", conditions);
}
else
{
isFirst = true;
foreach (var columnProperty in conditions.GetType().GetProperties().Where(p => p.CanRead))
{
var objVal = columnProperty.GetValue(conditions, null);
if (isFirst)
{
sqlText.AppendLine(" WHERE {0} = {1}get_{0}", columnProperty.Name, this.ParameterSymbol);
isFirst = false;
}
else
{
sqlText.AppendLine(" AND {0} = {1}get_{0}", columnProperty.Name, this.ParameterSymbol);
}
dbCommandSource.Parameters.Add("get_" + columnProperty.Name, objVal);
}
}
}
dbCommandSource.CommandText = sqlText.ToString();
return(dbCommandSource);
}
