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rebased with Marr.Data

Browse source 
there is a broken test.
This commit is contained in:
Keivan Beigi 2013-05-27 16:35:53 -07:00
commit 261ce772de
8 changed files with 199 additions and 58 deletions
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58
Marr.Data/QGen/WhereBuilder.cs
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@ -24,7 +24,7 @@ namespace Marr.Data.QGen
private MapRepository _repos;
private DbCommand _command;
private string _paramPrefix;
private bool isLeftSide = true;
private bool _isLeftSide = true;
protected bool _useAltName;
protected Dialect _dialect;
protected StringBuilder _sb;
@ -67,12 +67,12 @@ namespace Marr.Data.QGen
{
_sb.Append("(");
isLeftSide = true;
_isLeftSide = true;
Visit(expression.Left);
_sb.AppendFormat(" {0} ", Decode(expression.NodeType));
_sb.AppendFormat(" {0} ", Decode(expression));
isLeftSide = false;
_isLeftSide = false;
Visit(expression.Right);
_sb.Append(")");
@ -107,7 +107,7 @@ namespace Marr.Data.QGen
protected override Expression VisitMemberAccess(MemberExpression expression)
{
if (isLeftSide)
if (_isLeftSide)
{
string fqColumn = GetFullyQualifiedColumnName(expression.Member, expression.Expression.Type);
_sb.Append(fqColumn);
@ -127,12 +127,20 @@ namespace Marr.Data.QGen
protected override Expression VisitConstant(ConstantExpression expression)
{
// Add parameter to Command.Parameters
string paramName = string.Concat(_paramPrefix, "P", _command.Parameters.Count.ToString());
if (expression.Value != null)
{
// Add parameter to Command.Parameters
string paramName = string.Concat(_paramPrefix, "P", _command.Parameters.Count.ToString());
_sb.Append(paramName);
_sb.Append(paramName);
var parameter = new ParameterChainMethods(_command, paramName, expression.Value).Parameter;
}
else
{
_sb.Append("NULL");
}
var parameter = new ParameterChainMethods(_command, paramName, expression.Value).Parameter;
return expression;
}
@ -182,12 +190,7 @@ namespace Marr.Data.QGen
}
string columnName = DataHelper.GetColumnName(declaringType, member.Name, _useAltName);
if (!_useAltName)
return _dialect.CreateToken(string.Format("{0}.{1}", table.Alias, columnName));
else
return _dialect.CreateToken(string.Format("{0}", columnName));
return _dialect.CreateToken(string.Format("{0}.{1}", table.Alias, columnName));
}
else
{
@ -196,9 +199,22 @@ namespace Marr.Data.QGen
}
}
private string Decode(ExpressionType expType)
private string Decode(BinaryExpression expression)
{
switch (expType)
bool isRightSideNullConstant = expression.Right.NodeType ==
ExpressionType.Constant &&
((ConstantExpression)expression.Right).Value == null;
if (isRightSideNullConstant)
{
switch (expression.NodeType)
{
case ExpressionType.Equal: return "IS";
case ExpressionType.NotEqual: return "IS NOT";
}
}
switch (expression.NodeType)
{
case ExpressionType.AndAlso: return "AND";
case ExpressionType.And: return "AND";
@ -210,7 +226,7 @@ namespace Marr.Data.QGen
case ExpressionType.NotEqual: return "<>";
case ExpressionType.OrElse: return "OR";
case ExpressionType.Or: return "OR";
default: throw new NotSupportedException(string.Format("{0} statement is not supported", expType.ToString()));
default: throw new NotSupportedException(string.Format("{0} statement is not supported", expression.NodeType.ToString()));
}
}
@ -223,7 +239,7 @@ namespace Marr.Data.QGen
MemberExpression memberExp = (body.Object as MemberExpression);
string fqColumn = GetFullyQualifiedColumnName(memberExp.Member, memberExp.Expression.Type);
_sb.AppendFormat("({0} LIKE '%' + {1} + '%')", fqColumn, paramName);
_sb.AppendFormat(_dialect.ContainsFormat, fqColumn, paramName);
}
private void Write_StartsWith(MethodCallExpression body)
@ -235,7 +251,7 @@ namespace Marr.Data.QGen
MemberExpression memberExp = (body.Object as MemberExpression);
string fqColumn = GetFullyQualifiedColumnName(memberExp.Member, memberExp.Expression.Type);
_sb.AppendFormat("({0} LIKE {1} + '%')", fqColumn, paramName);
_sb.AppendFormat(_dialect.StartsWithFormat, fqColumn, paramName);
}
private void Write_EndsWith(MethodCallExpression body)
@ -247,7 +263,7 @@ namespace Marr.Data.QGen
MemberExpression memberExp = (body.Object as MemberExpression);
string fqColumn = GetFullyQualifiedColumnName(memberExp.Member, memberExp.Expression.Type);
_sb.AppendFormat("({0} LIKE '%' + {1})", fqColumn, paramName);
_sb.AppendFormat(_dialect.EndsWithFormat, fqColumn, paramName);
}
/// <summary>