/// <summary>
/// Creates a return statement with the parameter in this script
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public DBStatement Return(DBParam param)
{
DBReturn ret = DBReturn.Return(param);
this.Then(ret);
return(ret);
}
/// <summary>
/// Creates and returns a new declaration of the parameter
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public static DBDeclaration Declare(DBParam param)
{
DBDelcarationRef dref = new DBDelcarationRef();
dref.Parameter = param;
return(dref);
}
/// <summary>
/// creates a parameter Declaration in this script
/// </summary>
/// <param name="param"></param>
/// <returns></returns>
public DBScript Declare(DBParam param)
{
DBDeclaration dec = DBDeclaration.Declare(param);
this.Then(dec);
return(this);
}
//
// WithParam... methods
//
#region public DBExecQuery WithParam(DBParam param)
/// <summary>
/// Appends a parameter to this EXEC statement
/// </summary>
/// <param name="param">The parameter to append</param>
/// <returns>Itself to support statement chaining</returns>
public DBExecQuery WithParam(DBParam param)
{
if (null == param)
{
throw new ArgumentNullException("param");
}
this.Parameters.Add(param);
return(this);
}
protected override bool ReadAnInnerElement(System.Xml.XmlReader reader, XmlReaderContext context)
{
if (this.IsElementMatch(XmlHelper.SprocParams, reader, context))
{
DBParamList paramlist = new DBParamList();
while (reader.Read())
{
if (IsElementMatch(XmlHelper.Parameter, reader, context))
{
DBParam p = DBParam.Param();
p.ReadXml(reader, context);
if (context.Parameters.Contains(p.Name))
{
p = context.Parameters[p.Name];
}
else
{
context.Parameters.Add(p);
}
paramlist.Add(p);
}
else if (reader.NodeType == System.Xml.XmlNodeType.EndElement && reader.LocalName == XmlHelper.SprocParams)
{
break;
}
}
this.Parameters = paramlist;
return(true);
}
else if (IsElementMatch(XmlHelper.Script, reader, context))
{
DBClause c = this.ReadNextInnerClause(reader.LocalName, reader, context);
if (c is DBScript)
{
this.Script = (DBScript)c;
}
else
{
throw new System.Xml.XmlException("Inner content of a StoredProcedure must be a Script");
}
return(true);
}
return(base.ReadAnInnerElement(reader, context));
}
protected override bool ReadAnInnerElement(System.Xml.XmlReader reader, XmlReaderContext context)
{
DBClause c = this.ReadNextInnerClause(this.XmlElementName, reader, context);
if (c is DBParam)
{
DBParam p = (DBParam)c;
if (context.Parameters.Contains(p.Name))
{
p = context.Parameters[p.Name];
}
else
{
context.Parameters.Add(p);
}
this.Parameter = p;
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Adds an input/output parameter to the declaration of this StoredProcedure
/// </summary>
/// <param name="genericname"></param>
/// <param name="type"></param>
/// <param name="size"></param>
/// <param name="direction"></param>
/// <returns></returns>
public DBCreateProcedureQuery WithParam(string genericname, DbType type, int size, ParameterDirection direction)
{
DBParam p = DBParam.Param(genericname, type, size, direction);
return(this.WithParam(p));
}
//
// methods
//
#region public DBCreateProcedureQuery WithParam(DBParam parameter) + 4 overloads
/// <summary>
/// Adds an input/output parameter to the declaration of this StoredProcedure
/// </summary>
/// <param name="genericname"></param>
/// <param name="type"></param>
/// <returns></returns>
public DBCreateProcedureQuery WithParam(string genericname, DbType type)
{
DBParam p = DBParam.Param(genericname, type);
return(this.WithParam(p));
}
/// <summary>
/// Appends a new parameter to this EXEC statement with the type and the delegate
/// method that will be evaulated at statement generation time to extract the value
/// </summary>
/// <param name="name">The name of the parameter</param>
/// <param name="type">The DbType of the parameter</param>
/// <param name="valueprovider">The delegate method that will return the value</param>
/// <returns>Itself to support statement chaining</returns>
public DBExecQuery WithParamDelegate(string name, System.Data.DbType type, ParamValue valueprovider)
{
DBParam p = DBParam.ParamWithDelegate(name, type, valueprovider);
return(this.WithParam(p));
}
/// <summary>
/// Specify a value for the correspoding column via a delegate method
/// </summary>
/// <param name="valueProvider">A (anonymous) delegate that returns an object when invoked</param>
/// <returns>Itself so statements can be chained</returns>
public DBInsertQuery Value(ParamValue valueProvider)
{
DBParam p = DBParam.ParamWithDelegate(valueProvider);
return(Value(p));
}
/// <summary>
/// Appends a new parameter to this EXEC statement with the specified name and value.
/// WARNING - specifying null or DBNull will make the DbType undiscoverable at runtime, and may cause execution errors
/// </summary>
/// <param name="name">The name of the parameter</param>
/// <param name="value">The value of the parameter</param>
/// <returns>Itself to support statement chaining</returns>
public DBExecQuery WithParamValue(string name, object value)
{
DBParam p = DBParam.ParamWithValue(name, value);
return(this.WithParam(p));
}
/// <summary>
/// Appends a new parameter to this EXEC statement of the specified type and with the specified value
/// </summary>
/// <param name="type">The DbType of the parameter</param>
/// <param name="paramValue">The value of the parameter</param>
/// <returns>Itself to support statement chaining</returns>
public DBExecQuery WithParamValue(System.Data.DbType type, object paramValue)
{
DBParam p = DBParam.ParamWithValue(type, paramValue);
return(this.WithParam(p));
}
/// <summary>
/// Appends a new parameter to this EXEC statement with the specified value.
/// WARNING - specifying null or DBNull will make the DbType undiscoverable at runtime, and may cause execution errors
/// </summary>
/// <param name="paramValue">The value of the parameter</param>
/// <returns>Itself to support statement chaining</returns>
public DBExecQuery WithParamValue(object paramValue)
{
DBParam p = DBParam.ParamWithValue(paramValue);
return(this.WithParam(p));
}
/// <summary>
/// Creates a return statement with the parameter in this script
/// </summary>
/// <param name="paramName"></param>
/// <returns></returns>
public DBStatement Return(string paramName)
{
DBParam p = DBParam.Param(paramName);
return(Return(p));
}
/// <summary>
/// creates a parameter assignment statement in this script
/// </summary>
/// <param name="param"></param>
/// <param name="clause"></param>
/// <returns></returns>
public DBScript Set(DBParam param, DBClause clause)
{
DBAssign assign = DBAssign.Set(param, clause);
return(this.Set(assign));
}
/// <summary>
/// Adds an input/output parameter to the declaration of this StoredProcedure
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
public DBCreateProcedureQuery WithParam(DBParam parameter)
{
this.Parameters.Add(parameter);
return(this);
}
public DBExecQuery WithParamValue(string name, System.Data.DbType type, int length, object value)
{
DBParam p = DBParam.ParamWithValue(name, type, length, value);
return(this.WithParam(p));
}
/// <summary>
/// Appends a new parameter to this EXEC statement with the delegate
/// method that will be evaulated at statement generation time ot extract the value
/// </summary>
/// <param name="valueprovider">The delegate method that will return the value</param>
/// <returns>Itself to support statement chaining</returns>
public DBExecQuery WithParamDelegate(ParamValue valueprovider)
{
DBParam p = DBParam.ParamWithDelegate(valueprovider);
return(this.WithParam(p));
}
protected virtual DBClause DoRead(string element, XmlReader reader, XmlReaderContext context)
{
DBClause c = null;
switch (element)
{
case (XmlHelper.Select):
c = DBSelectQuery.Select();
break;
case (XmlHelper.Delete):
c = DBDeleteQuery.Delete();
break;
case (XmlHelper.Update):
c = DBUpdateQuery.Update();
break;
case (XmlHelper.Insert):
c = DBInsertQuery.InsertInto();
break;
case (XmlHelper.Script):
c = DBQuery.Script();
break;
case (XmlHelper.Use):
c = DBUseQuery.Use();
break;
case (XmlHelper.Table):
c = DBTable.Table();
break;
case (XmlHelper.Fields):
c = DBSelectSet.Select();
break;
case (XmlHelper.AField):
c = DBField.Field();
break;
case (XmlHelper.AllFields):
c = DBField.AllFields();
break;
case (XmlHelper.From):
c = DBTableSet.From();
break;
case (XmlHelper.Where):
c = DBFilterSet.Where();
break;
case (XmlHelper.Group):
c = DBGroupBySet.GroupBy();
break;
case (XmlHelper.Order):
c = DBOrderSet.OrderBy();
break;
case (XmlHelper.Assignments):
c = DBAssignSet.Assign();
break;
case (XmlHelper.Values):
c = DBValueSet.Values();
break;
case (XmlHelper.Join):
c = DBJoin.Join();
break;
case (XmlHelper.Function):
c = DBFunction.Function();
break;
case (XmlHelper.Constant):
c = DBConst.Null();
break;
case (XmlHelper.Top):
c = DBTop.Top();
break;
case (XmlHelper.UnaryOp):
c = DBComparison.Not();
break;
case (XmlHelper.Compare):
c = DBComparison.Compare();
break;
case (XmlHelper.Between):
c = DBComparison.Between();
break;
case (XmlHelper.Parameter):
//parameter is a special case.
//we add them to akeyed colection if they are not already registered
//then at the end we set the values at the end
string name = reader.GetAttribute(XmlHelper.Name);
DBParam aparam;
if (context.Parameters.TryGetParameter(name, out aparam))
{
c = aparam;
}
else
{
aparam = DBParam.Param();
aparam.Name = name;
context.Parameters.Add(aparam);
c = aparam;
}
break;
case (XmlHelper.OrderBy):
c = DBOrder.OrderBy();
break;
case (XmlHelper.Calculation):
c = DBCalc.Calculate();
break;
case (XmlHelper.Aggregate):
c = DBAggregate.Aggregate();
break;
case (XmlHelper.ValueGroup):
c = DBValueGroup.Empty();
break;
case (XmlHelper.BooleanOperator):
c = DBBooleanOp.Compare();
break;
case (XmlHelper.Assign):
c = DBAssign.Assign();
break;
case (XmlHelper.InnerSelect):
c = DBSubQuery.SubSelect();
break;
case (XmlHelper.Multiple):
c = DBMultiComparisonRef.Many();
break;
case (XmlHelper.QueryOptionSet):
c = new DBQueryHintOptionSet();
break;
case (XmlHelper.QueryOption):
c = DBQueryHintOption.QueryOption();
break;
case (XmlHelper.CreateSproc):
c = DBCreateProcedureQuery.CreateProcedure();
break;
case (XmlHelper.Declare):
c = DBDeclaration.Declare();
break;
case (XmlHelper.CreateTable):
c = DBCreateTableQuery.Table();
break;
case (XmlHelper.ColumnDefinition):
c = DBColumn.Column();
break;
case (XmlHelper.PrimaryKey):
c = DBPrimaryKey.PrimaryKey();
break;
case (XmlHelper.ForeignKey):
c = DBForeignKey.ForeignKey();
break;
case (XmlHelper.CreateIndex):
c = DBCreateIndexQuery.Index();
break;
case (XmlHelper.CreateView):
c = DBCreateViewQuery.CreateView();
break;
case (XmlHelper.CreateSequence):
c = DBCreateSequenceQuery.Sequence();
break;
case (XmlHelper.DropTable):
c = DBDropTableQuery.DropTable();
break;
case (XmlHelper.DropIndex):
c = DBDropIndexQuery.DropIndex();
break;
case (XmlHelper.DropView):
c = DBDropViewQuery.DropView();
break;
case (XmlHelper.DropSproc):
c = DBDropProcedureQuery.DropProcedure();
break;
case (XmlHelper.DropSequence):
c = DBDropSequenceQuery.DropSequence();
break;
default:
throw XmlHelper.CreateException("The XML data could not be deserialized because the element {1} was not recognised. {0}", reader, null, element);
}
if (c != null)
{
c.ReadXml(reader, context);
}
return(c);
}
//
// DBDecaration
//
#region public static DBDeclaration Declare(DBParam param)
/// <summary>
/// Creates a declaration statement e.g. DECLARE @p1 INT;
/// </summary>
/// <param name="param">The parameter to declare</param>
/// <returns>The declaration</returns>
public static DBDeclaration Declare(DBParam param)
{
return(DBDeclaration.Declare(param));
}