/// <summary>
/// Returns the full schema of the database including tables, indexes, foreign keys, etc.
/// </summary>
/// <remarks>
/// It's very slow for large databases
/// </remarks>
public static DataBaseSchema Load(DataBase database, string schemaProvider)
{
DataBaseSchema schema = new DataBaseSchema();
DatabaseSchema schemaReader;
using (var dbReader = new DatabaseSchemaReader.DatabaseReader(database.ConnectionString, schemaProvider))
{
dbReader.AllTables();
dbReader.AllViews();
try
{
dbReader.AllStoredProcedures();
}
catch { }
try
{
dbReader.AllUsers();
}
catch { }
schemaReader = dbReader.DatabaseSchema;
}
foreach (DatabaseTable dbt in schemaReader.Tables)
{
if (dbt.PrimaryKeyColumn == null)
{
continue;
}
dbt.PrimaryKeyColumn.AddIdentity();
var table = new Table()
{
Name = dbt.Name,
DataBase = schema,
IdentityIncrement = dbt.PrimaryKeyColumn.IdentityDefinition.IdentityIncrement,
IdentitySeed = dbt.PrimaryKeyColumn.IdentityDefinition.IdentitySeed,
};
schema.Tables.Add(table);
}
foreach (DatabaseTable dbt in schemaReader.Tables)
{
if (dbt.PrimaryKeyColumn == null)
{
continue;
}
var table = schema[dbt.Name];
foreach (DatabaseColumn dbc in dbt.Columns)
{
Column column = new Column()
{
Name = dbc.Name,
Table = table,
Description = dbc.Description,
IsNullable = dbc.Nullable,
IsAutoNumber = dbc.IsAutoNumber,
ComputedDefinition = dbc.ComputedDefinition,
DefaultValue = dbc.DefaultValue,
IsPrimaryKey = dbc.IsPrimaryKey,
Length = (uint?) dbc.Length,
Ordinal = dbc.Ordinal,
Precision = dbc.Precision,
Scale = dbc.Scale,
};
if (dbc.DataType != null)
{
column.DbType = DbTypeMapper.Parse(dbc.DataType.GetNetType());
}
else
{
if(dbc.DbDataType.StartsWith("varchar"))
{
column.DbType = DbType.AnsiString;
}
else if (dbc.DbDataType.StartsWith("int"))
{
column.DbType = DbType.Int32;
}
else if (dbc.DbDataType.StartsWith("decimal"))
{
column.DbType = DbType.Decimal;
}
else if (dbc.DbDataType.StartsWith("datetime"))
{
column.DbType = DbType.DateTime;
}
else if (dbc.DbDataType.StartsWith("money"))
{
column.DbType = DbType.Currency;
}
else if (dbc.DbDataType.StartsWith("char"))
{
column.DbType = DbType.AnsiStringFixedLength;
}
else if (dbc.DbDataType.StartsWith("text"))
{
column.DbType = DbType.AnsiString;
}
}
table.Columns.Add(column);
}
foreach (DatabaseIndex dbi in dbt.Indexes)
{
Index index = new Index()
{
Name = dbi.Name,
Table = table,
Direction = SortDirection.Ascending,
Unique = dbi.IsUnique,
};
foreach (DatabaseColumn dbc in dbi.Columns)
{
index.Columns.Add(table[dbc.Name]);
}
table.Indexes.Add(index);
}
foreach (DatabaseTrigger dbtr in dbt.Triggers)
{
DataBaseOperation operation = DataBaseOperation.Insert;
Enum.TryParse<DataBaseOperation>(dbtr.TriggerEvent, true, out operation);
Trigger trigger = new Trigger()
{
TriggerBody = dbtr.TriggerBody,
TriggerEvent = operation,
Table = table,
};
table.Triggers.Add(trigger);
}
foreach (DatabaseConstraint dbcons in dbt.CheckConstraints)
{
if (dbcons.ConstraintType == ConstraintType.Check)
{
CheckConstraint constraint = new CheckConstraint()
{
Expression = dbcons.Expression,
Table = table,
};
table.CheckConstraints.Add(constraint);
}
else if (dbcons.ConstraintType == ConstraintType.ForeignKey)
{
ForeignKey foreignKey = new ForeignKey()
{
Name= dbcons.Name,
DeleteAction = schema.ParseConstraintAction(dbcons.DeleteRule),
UpdateAction =schema.ParseConstraintAction(dbcons.UpdateRule),
RemoteTable = schema[dbcons.RefersToTable],
Table = table,
};
var referencedColumns = dbcons.ReferencedColumns(schemaReader).ToArray();
for (int i = 0; i < dbcons.Columns.Count; i++)
{
foreignKey.Columns.Add(new Tuple<Column,Column>(table[dbcons.Columns[i]], foreignKey.RemoteTable[referencedColumns[i]]));
}
table.ForeignKeys.Add(foreignKey);
}
}
}
foreach (DatabaseView dbv in schemaReader.Views)
{
View view = new View()
{
Name = dbv.Name,
Command = dbv.Sql,
Description = dbv.Description,
DataBase = schema,
};
schema.Views.Add(view);
}
foreach (DatabaseUser dbu in schemaReader.Users)
{
User user = new User()
{
Name = dbu.Name,
DataBase = schema,
};
schema.Users.Add(user);
}
return schema;
}
/// <summary>
/// Creates a list of new DataTypes, creating as well a list of new Tables with all members of type as columns
/// <para xml:lang="es">
/// Crea una lista de tipos de datos nuevos, creando así una lista de nuevas tablas con todos los miembros de tipo como columnas
/// </para>
/// </summary>
public static IEnumerable<DataType> DefaultMap(IEnumerable<Type> types)
{
//we will store here all types that are actually persistent
List<DataType> persistentTypes = new List<DataType>();
Random random = new Random();
//map primary keys first, so we allow to foreign keys and inheritance to be correctly mapped
foreach (Type type in types)
{
//skip enums and interfaces
if (type.GetTypeInfo().IsEnum || type.GetTypeInfo().IsInterface)
{
continue;
}
//ignore types with no primary key
var pk = GetMappableMembers(type).Where(m => DataMember.IsPrimaryKey(m));
if (pk.Count() == 0)
{
continue;
}
DataType dtype = new DataType(type);
AllDataTypes.Add(dtype);
foreach (var memberInfo in pk)
{
//create datamember
dtype.AddMember(memberInfo.Name);
}
persistentTypes.Add(dtype);
}
foreach (DataType dtype in persistentTypes)
{
//create inheritance foreign keys
if (dtype.BaseDataType != null)
{
ForeignKey foreignKey = new ForeignKey();
foreignKey.Table = dtype.Table;
foreignKey.RemoteTable = dtype.BaseDataType.Table;
foreignKey.Name = "FK_" + dtype.Name + "_" + dtype.BaseDataType.Name + "_" + random.Next();
//we asume that primary keys on parent and child tables have the same number and order of related columns
for (int i = 0; i < dtype.PrimaryKey.Count(); i++)
{
DataMember pk = dtype.PrimaryKey.ToArray()[i];
DataMember basePk = dtype.BaseDataType.PrimaryKey.ToArray()[i];
foreignKey.Columns.Add(new Tuple<Column, Column>(pk.Column, basePk.Column));
}
dtype.Table.ForeignKeys.Add(foreignKey);
}
//map non primary key members now
foreach (var memberInfo in GetMappableMembers(dtype.InnerType).Where(m => !DataMember.IsPrimaryKey(m)))
{
Type returnType = MemberExpression.GetReturnType(memberInfo);
//is this a collection of a mapped type? if so, ignore since this must be a 1-1, 1-many or many-many relationship and must be mapped somewhere else
if (DataType.IsCollection(returnType) && IsMapped(returnType.GetCollectionItemType()))
{
continue;
}
//its a persistent type, with it's own table, map as a foreign key with one or more columns for the primary key
if (IsMapped(returnType))
{
//we asume this datatype is already mapped along with it's primery key
DataType returnDataType = returnType;
ForeignKey foreignKey = new ForeignKey();
foreignKey.Table = dtype.Table;
foreignKey.RemoteTable = returnDataType.Table;
foreignKey.Name = "FK_" + dtype.Name + "_" + memberInfo.Name + "_" + random.Next();
foreach (DataMember pk in returnDataType.PrimaryKey.ToList())
{
DataMember dmember = dtype.AddMember(memberInfo.Name + "." + pk.Expression);
dmember.Column.Name = memberInfo.Name + "_" + pk.Expression.Expression.Replace('.', '_');
dmember.Column.IsPrimaryKey = false;
dmember.Column.IsNullable = !RequiredValidator.IsRequired(memberInfo);
foreignKey.Columns.Add(new Tuple<Column, Column>(dmember.Column, pk.Column));
}
dtype.Table.ForeignKeys.Add(foreignKey);
}
//just map as a atomic value
else
{
//create datamember
dtype.AddMember(memberInfo.Name);
}
}
foreach (var memberInfo in GetMappableMembers(dtype.InnerType))
{
foreach (var att in memberInfo.GetCustomAttributes())
{
var validator = att as ValidatorBase;
if (validator == null)
{
continue;
}
MemberValidator memberValidator = new MemberValidator(new MemberExpression(memberInfo.DeclaringType, memberInfo.Name), validator);
dtype.Validators.Add(memberValidator);
}
}
yield return dtype;
}
}
public void TablesTest()
{
DataBase db = Connect();
var generator = new OKHOSTING.Sql.Net4.SqlServer.SqlGenerator();
//Create table team
Table team = new Table("team");
team.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = team });
team.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, Length = 50, IsNullable = false, Table = team });
team.Columns.Add(new Column() { Name = "Leage", DbType = DbType.Int32, IsNullable = false, Table = team });
team.Columns.Add(new Column() { Name = "Country", DbType = DbType.Int32, IsNullable = false, Table = team });
//Create table leage
Table leage = new Table("leage");
leage.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = leage });
leage.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, IsNullable = false, Table = leage });
//Create table country
Table country = new Table("country");
country.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = country });
country.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, IsNullable = false, Table = country });
//Create ForeignKey FK_team_country
ForeignKey countryFK = new ForeignKey();
countryFK.Table = team;
countryFK.RemoteTable = country;
countryFK.Name = "FK_team_country";
countryFK.Columns.Add(new Tuple<Column, Column>(team["Country"], country["Id"]));
countryFK.DeleteAction = countryFK.UpdateAction = ConstraintAction.Restrict;
//Create ForeignKey FK_team_leage
ForeignKey leageFK = new ForeignKey();
leageFK.Table = team;
leageFK.RemoteTable = leage;
leageFK.Name = "FK_team_leage";
leageFK.Columns.Add(new Tuple<Column, Column>(team["Leage"], leage["Id"]));
leageFK.DeleteAction = countryFK.UpdateAction = ConstraintAction.Restrict;
Command sql = generator.Create(team);
db.Execute(sql);
sql = generator.Create(leage);
db.Execute(sql);
sql = generator.Create(country);
db.Execute(sql);
//insert Country
Insert insert = new Insert();
insert.Table = country;
insert.Values.Add(new ColumnValue(country["Id"], 15));
insert.Values.Add(new ColumnValue(country["Name"], "Argentina"));
sql = generator.Insert(insert);
int affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
insert = new Insert();
insert.Table = country;
insert.Values.Add(new ColumnValue(country["Id"], 10));
insert.Values.Add(new ColumnValue(country["Name"], "Brasil"));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert leage
insert = new Insert();
insert.Table = leage;
insert.Values.Add(new ColumnValue(leage["Id"], 100));
insert.Values.Add(new ColumnValue(leage["Name"], "Champions"));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
insert = new Insert();
insert.Table = leage;
insert.Values.Add(new ColumnValue(leage["Id"], 110));
insert.Values.Add(new ColumnValue(leage["Name"], "Concacaff"));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert team
insert = new Insert();
insert.Table = team;
insert.Values.Add(new ColumnValue(team["Id"], 1));
insert.Values.Add(new ColumnValue(team["Name"], "Barza"));
insert.Values.Add(new ColumnValue(team["Leage"], 100));
insert.Values.Add(new ColumnValue(team["Country"], 10));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
insert = new Insert();
insert.Table = team;
insert.Values.Add(new ColumnValue(team["Id"], 2));
insert.Values.Add(new ColumnValue(team["Name"], "Pumas"));
insert.Values.Add(new ColumnValue(team["Leage"], 110));
insert.Values.Add(new ColumnValue(team["Country"], 15));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//select
Select select = new Select();
select.Table = team;
select.Columns.Add(new SelectColumn(team["id"]));
select.Columns.Add(new SelectColumn(team["Name"]));
//Create inner join to country
SelectJoin join = new SelectJoin();
join.Table = country;
join.On.Add(new ColumnCompareFilter() { Column = team["country"], ColumnToCompare = country["id"], Operator = Data.CompareOperator.Equal });
join.Columns.Add(new SelectColumn(country["name"], "countryName"));
join.JoinType = SelectJoinType.Inner;
select.Joins.Add(join);
//Create inner join to leage
SelectJoin join2 = new SelectJoin();
join2.Table = leage;
join2.On.Add(new ColumnCompareFilter() { Column = team["leage"], ColumnToCompare = leage["id"], Operator = Data.CompareOperator.Equal });
join2.Columns.Add(new SelectColumn(leage["name"], "leageName"));
join2.JoinType = SelectJoinType.Inner;
select.Joins.Add(join2);
select.Where.Add(new ValueCompareFilter() { Column = team["Name"], ValueToCompare = "Pumas", Operator = Data.CompareOperator.Equal });
sql = generator.Select(select);
var result = db.GetDataTable(sql);
//delete column id in table leage where id = 110
Delete delete = new Delete();
delete.Table = leage;
delete.Where.Add(new ValueCompareFilter() { Column = leage["id"], ValueToCompare = 110, Operator = Data.CompareOperator.Equal });
sql = generator.Delete(delete);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//drop table leage
sql = generator.Drop(leage);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(leage.Name));
//drop table country
sql = generator.Drop(country);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(country.Name));
//drop table team
sql = generator.Drop(team);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(team.Name));
}
public void InnerJoinTest()
{
DataBase db = Connect();
var generator = new OKHOSTING.Sql.Net4.SqlServer.SqlGenerator();
// define table schema
Table customer = new Table("customer");
customer.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = customer });
customer.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, Length = 100, IsNullable = false, Table = customer });
customer.Columns.Add(new Column() { Name = "Country", DbType = DbType.Int32, IsNullable = false, Table = customer });
Table country = new Table("country");
country.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = country });
country.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, Length = 100, IsNullable = false, Table = country });
ForeignKey countryFK = new ForeignKey();
countryFK.Table = customer;
countryFK.RemoteTable = country;
countryFK.Name = "FK_customer_country";
countryFK.Columns.Add(new Tuple<Column, Column>(customer["Country"], country["id"]));
countryFK.DeleteAction = countryFK.UpdateAction = ConstraintAction.Restrict;
var sql = generator.Create(customer);
db.Execute(sql);
sql = generator.Create(country);
db.Execute(sql);
sql = generator.Create(countryFK);
db.Execute(sql);
//insert
Insert insert2 = new Insert();
insert2.Table = country;
insert2.Values.Add(new ColumnValue(country["Id"], 1));
insert2.Values.Add(new ColumnValue(country["Name"], "Mexico"));
sql = generator.Insert(insert2);
int affectedRows2 = db.Execute(sql);
Assert.AreEqual(affectedRows2, 1);
Insert insert = new Insert();
insert.Table = customer;
insert.Values.Add(new ColumnValue(customer["Id"], 1));
insert.Values.Add(new ColumnValue(customer["Name"], "Angel"));
insert.Values.Add(new ColumnValue(customer["Country"], 1));
sql = generator.Insert(insert);
int affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//select
Select select = new Select();
select.Table = customer;
select.Columns.Add(new SelectColumn(customer["id"]));
select.Columns.Add(new SelectColumn(customer["Name"]));
SelectJoin join = new SelectJoin();
join.Table = country;
join.On.Add(new ColumnCompareFilter() { Column = customer["country"], ColumnToCompare = country["id"], Operator = Data.CompareOperator.Equal });
join.Columns.Add(new SelectColumn(country["name"], "countryName"));
join.JoinType = SelectJoinType.Inner;
select.Joins.Add(join);
sql = generator.Select(select);
var result = db.GetDataTable(sql);
foreach (IDataRow row in result)
{
foreach (object obj in row)
{
Console.Write(obj);
}
}
Assert.AreEqual(result.Count, 1);
}
/// <summary>
/// Creates a list of new DataTypes, creating as well a list of new Tables with all members of type as columns
/// </summary>
public static IEnumerable<DataType> DefaultMap(IEnumerable<Type> types)
{
//we will store here all types that are actually persistent
List<DataType> persistentTypes = new List<DataType>();
Random random = new Random();
//map primary keys first, so we allow to foreign keys and inheritance to be correctly mapped
foreach (Type type in types)
{
//skip enums and interfaces
if (type.GetTypeInfo().IsEnum || type.GetTypeInfo().IsInterface)
{
continue;
}
//ignore types with no primary key
var pk = GetMappableMembers(type).Where(m => DataMember.IsPrimaryKey(m));
if (pk.Count() == 0)
{
continue;
}
DataType dtype = new DataType(type);
AllDataTypes.Add(dtype);
foreach (var memberInfo in pk)
{
//create datamember
dtype.AddMember(memberInfo.Name);
}
persistentTypes.Add(dtype);
}
foreach (DataType dtype in persistentTypes)
{
//create inheritance foreign keys
if (dtype.BaseDataType != null)
{
ForeignKey foreignKey = new ForeignKey();
foreignKey.Table = dtype.Table;
foreignKey.RemoteTable = dtype.BaseDataType.Table;
foreignKey.Name = "FK_" + dtype.Name + "_" + dtype.BaseDataType.Name + "_" + random.Next();
//we asume that primary keys on parent and child tables have the same number and order of related columns
for (int i = 0; i < dtype.PrimaryKey.Count(); i++)
{
DataMember pk = dtype.PrimaryKey.ToArray()[i];
DataMember basePk = dtype.BaseDataType.PrimaryKey.ToArray()[i];
foreignKey.Columns.Add(new Tuple<Column, Column>(pk.Column, basePk.Column));
}
dtype.Table.ForeignKeys.Add(foreignKey);
}
//map non primary key members now
foreach (var memberInfo in GetMappableMembers(dtype.InnerType).Where(m => !DataMember.IsPrimaryKey(m)))
{
Type returnType = MemberExpression.GetReturnType(memberInfo);
//is this a collection of a mapped type? if so, ignore since this must be a 1-1, 1-many or many-many relationship and must be mapped somewhere else
if (DataType.IsCollection(returnType) && IsMapped(returnType.GetCollectionItemType()))
{
continue;
}
//its a persistent type, with it's own table, map as a foreign key with one or more columns for the primary key
if (IsMapped(returnType))
{
//we asume this datatype is already mapped along with it's primery key
DataType returnDataType = returnType;
ForeignKey foreignKey = new ForeignKey();
foreignKey.Table = dtype.Table;
foreignKey.RemoteTable = returnDataType.Table;
foreignKey.Name = "FK_" + dtype.Name + "_" + memberInfo.Name + "_" + random.Next();
foreach (DataMember pk in returnDataType.PrimaryKey.ToList())
{
Column column = new Column();
column.Name = memberInfo.Name + "_" + pk.Member.Expression.Replace('.', '_');
column.Table = dtype.Table;
column.IsPrimaryKey = false;
column.IsNullable = !RequiredValidator.IsRequired(memberInfo);
column.DbType = DbTypeMapper.Parse(pk.Member.ReturnType);
if (column.IsString)
{
column.Length = StringLengthValidator.GetMaxLength(pk.Member.FinalMemberInfo);
}
dtype.Table.Columns.Add(column);
foreignKey.Columns.Add(new Tuple<Column, Column>(column, pk.Column));
//create datamember
dtype.AddMember(memberInfo.Name + "." + pk.Member, column);
}
dtype.Table.ForeignKeys.Add(foreignKey);
}
//just map as a atomic value
else
{
Column column = new Column();
column.Name = memberInfo.Name;
column.Table = dtype.Table;
column.IsNullable = !RequiredValidator.IsRequired(memberInfo);
column.IsPrimaryKey = false;
//create datamember
DataMember dmember = dtype.AddMember(memberInfo.Name, column);
//is this a regular atomic value?
if (DbTypeMapper.DbTypeMap.ContainsValue(returnType) && returnType != typeof(object))
{
column.DbType = DbTypeMapper.Parse(returnType);
}
else if (returnType.GetTypeInfo().IsEnum)
{
column.DbType = DbType.Int32;
}
//this is an non-atomic object, but its not mapped as a DataType, so we serialize it as json
else
{
column.DbType = DbType.String;
dmember.Converter = new Conversions.Json<object>();
}
if (column.IsString)
{
column.Length = Data.Validation.StringLengthValidator.GetMaxLength(memberInfo);
}
dtype.Table.Columns.Add(column);
}
}
yield return dtype;
}
}
/// <summary>
/// Returns the Sql sentence for dropping a foreign key in the specified Table
/// </summary>
/// <param name="index">Foreign key that will be dropped</param>
/// <returns>Sql query for dropping the foreign key</returns>
public virtual Command Drop(ForeignKey foreigkKey)
{
return "ALTER TABLE " + EncloseName(foreigkKey.Table.Name) + " DROP FOREIGN KEY " + EncloseName(foreigkKey.Name);
}
/// <summary>
/// Returns the Sql sentence for adding a foreign key in the specified Table
/// </summary>
/// <param name="index">Doreign key that will be added</param>
/// <returns>Sql query for adding the foreign key</returns>
public virtual Command Create(ForeignKey foreigkKey)
{
return "ALTER TABLE " + EncloseName(foreigkKey.Table.Name) + " ADD " + ForeignKeyDefinition(foreigkKey);
}
/// <summary>
/// Creates a Sql sentence for creating a foreign key
/// </summary>
/// <param name="column">Column that represents a foreign key</param>
/// <returns>Sql sentence for creating a foreign key in the database</returns>
protected virtual Command ForeignKeyDefinition(ForeignKey foreigkKey)
{
//Validate if column is a foreign key
if (foreigkKey == null) throw new ArgumentNullException("foreigkKey");
//sql script that wil be generated
string sql = "CONSTRAINT " + EncloseName(foreigkKey.Name) + " FOREIGN KEY (";
//add local columns
foreach (Tuple<Column, Column> columnTuple in foreigkKey.Columns)
{
sql += EncloseName(columnTuple.Item1.Name) + ", ";
}
//remove last comma and close parenthesis
sql = sql.TrimEnd(',', ' ');
sql += ") REFERENCES " + EncloseName(foreigkKey.RemoteTable.Name) + "(";
//add list of local columns
foreach (Tuple<Column, Column> columnTuple in foreigkKey.Columns)
{
sql += EncloseName(columnTuple.Item2.Name) + ", ";
}
//Removing the last ", "
sql = sql.TrimEnd(',', ' ');
sql += ")";
//Returning the sentence
return sql;
}
public void MultiJoinTest()
{
//Open Connect to DataBase
DataBase db = Connect();
var generator = new OKHOSTING.Sql.MySql.SqlGenerator();
// define table Customer
Table customer = new Table("customer");
customer.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = customer });
customer.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, Length = 100, IsNullable = false, Table = customer });
// define table Product
Table product = new Table("product");
product.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = product });
product.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, Length = 100, IsNullable = false, Table = product });
product.Columns.Add(new Column() { Name = "Price", DbType = DbType.Decimal, IsNullable = false, Table = product });
// define table Tax
Table tax = new Table("tax");
tax.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = tax });
tax.Columns.Add(new Column() { Name = "Name", DbType = DbType.AnsiString, Length = 100, IsNullable = false, Table = tax });
tax.Columns.Add(new Column() { Name = "Rate", DbType = DbType.Decimal, IsNullable = false, Table = tax });
// define table Sale
Table sale = new Table("sale");
sale.Columns.Add(new Column() { Name = "Id", DbType = DbType.Int32, IsPrimaryKey = true, IsAutoNumber = true, Table = sale });
sale.Columns.Add(new Column() { Name = "Date", DbType = DbType.Date, Table = sale });
sale.Columns.Add(new Column() { Name = "Customer", DbType = DbType.Int32, IsNullable = false, Table = sale });
sale.Columns.Add(new Column() { Name = "Product", DbType = DbType.Int32, IsNullable = false, Table = sale });
sale.Columns.Add(new Column() { Name = "Tax", DbType = DbType.Int32, IsNullable = false, Table = sale });
//define Foreign Key Sale to Customer
ForeignKey customerFK = new ForeignKey();
customerFK.Table = sale;
customerFK.RemoteTable = customer;
customerFK.Name = "FK_sale_customer";
customerFK.Columns.Add(new Tuple<Column, Column>(sale["Customer"], customer["Id"]));
customerFK.DeleteAction = customerFK.UpdateAction = ConstraintAction.Restrict;
//define Foreign Key Sale to Product
ForeignKey productFK = new ForeignKey();
productFK.Table = sale;
productFK.RemoteTable = product;
productFK.Name = "FK_sale_product";
productFK.Columns.Add(new Tuple<Column, Column>(sale["Product"], product["Id"]));
productFK.DeleteAction = productFK.UpdateAction = ConstraintAction.Restrict;
//define Foreign Key Sale to Tax
ForeignKey taxFK = new ForeignKey();
taxFK.Table = sale;
taxFK.RemoteTable = tax;
taxFK.Name = "FK_sale_tax";
taxFK.Columns.Add(new Tuple<Column, Column>(sale["Tax"], tax["Id"]));
taxFK.DeleteAction = taxFK.UpdateAction = ConstraintAction.Restrict;
//Create table Customer
var sql = generator.Create(customer);
db.Execute(sql);
//Create table Product
sql = generator.Create(product);
db.Execute(sql);
//Create table Tax
sql = generator.Create(tax);
db.Execute(sql);
//Create table Sale
sql = generator.Create(sale);
db.Execute(sql);
//Create foreign Key Sale to Customer
sql = generator.Create(customerFK);
db.Execute(sql);
//Create foreign Key Sale to Product
sql = generator.Create(productFK);
db.Execute(sql);
//Create foreign Key Sale to Tax
sql = generator.Create(taxFK);
db.Execute(sql);
//insert values into customer
Insert insert = new Insert();
insert.Table = customer;
insert.Values.Add(new ColumnValue(customer["Id"], 1));
insert.Values.Add(new ColumnValue(customer["Name"], "Joyas Loyane SA de CV"));
sql = generator.Insert(insert);
int affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert values into customer
insert = new Insert();
insert.Table = customer;
insert.Values.Add(new ColumnValue(customer["Id"], 2));
insert.Values.Add(new ColumnValue(customer["Name"], "Cartie Joyerias SC de CV"));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert values into product
insert = new Insert();
insert.Table = product;
insert.Values.Add(new ColumnValue(product["Id"], 1));
insert.Values.Add(new ColumnValue(product["Name"], "Hosting"));
insert.Values.Add(new ColumnValue(product["Price"], 125.50));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert values into product
insert = new Insert();
insert.Table = product;
insert.Values.Add(new ColumnValue(product["Id"], 2));
insert.Values.Add(new ColumnValue(product["Name"], "Web Page"));
insert.Values.Add(new ColumnValue(product["Price"], 1300.75));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert values into tax
insert = new Insert();
insert.Table = tax;
insert.Values.Add(new ColumnValue(tax["Id"], 1));
insert.Values.Add(new ColumnValue(tax["Name"], "IVA"));
insert.Values.Add(new ColumnValue(tax["Rate"], 16.00));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert values into sale
insert = new Insert();
insert.Table = sale;
insert.Values.Add(new ColumnValue(sale["Id"], 1));
insert.Values.Add(new ColumnValue(sale["Date"], DateTime.Today));
insert.Values.Add(new ColumnValue(sale["Customer"], 1));
insert.Values.Add(new ColumnValue(sale["Product"], 1));
insert.Values.Add(new ColumnValue(sale["Tax"], 1));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//insert values into sale
insert = new Insert();
insert.Table = sale;
insert.Values.Add(new ColumnValue(sale["Id"], 2));
insert.Values.Add(new ColumnValue(sale["Date"], DateTime.Today));
insert.Values.Add(new ColumnValue(sale["Customer"], 2));
insert.Values.Add(new ColumnValue(sale["Product"], 2));
insert.Values.Add(new ColumnValue(sale["Tax"], 1));
sql = generator.Insert(insert);
affectedRows = db.Execute(sql);
Assert.AreEqual(affectedRows, 1);
//select sale for customer 'Joyas Loyane SA de CV'
Select select = new Select();
select.Table = sale;
select.Columns.Add(new SelectColumn(sale["id"]));
select.Columns.Add(new SelectColumn(sale["Date"]));
//join for get name Customer
SelectJoin join = new SelectJoin();
join.Table = customer;
join.On.Add(new ColumnCompareFilter() { Column = sale["Customer"], ColumnToCompare = customer["Id"], Operator = Data.CompareOperator.Equal });
join.Columns.Add(new SelectColumn(customer["Name"], "customerName"));
join.JoinType = SelectJoinType.Inner;
//Add Join in select
select.Joins.Add(join);
//join for get name Product
SelectJoin join2 = new SelectJoin();
join2.Table = product;
join2.On.Add(new ColumnCompareFilter() { Column = sale["Product"], ColumnToCompare = product["Id"], Operator = Data.CompareOperator.Equal });
join2.Columns.Add(new SelectColumn(product["Name"], "productName"));
join2.JoinType = SelectJoinType.Inner;
//Add Join in select
select.Joins.Add(join2);
//join for get name Tax
SelectJoin join3 = new SelectJoin();
join3.Table = tax;
join3.On.Add(new ColumnCompareFilter() { Column = sale["Tax"], ColumnToCompare = tax["Id"], Operator = Data.CompareOperator.Equal });
join3.Columns.Add(new SelectColumn(tax["Name"], "taxName"));
join3.JoinType = SelectJoinType.Inner;
//Add Join in select
select.Joins.Add(join3);
//Where Customer = Joyas Loyane SA de CV.
select.Where.Add(new ValueCompareFilter() { Column = customer["Name"], ValueToCompare = "Joyas Loyane SA de CV", Operator = Data.CompareOperator.Equal });
//Execute Select
sql = generator.Select(select);
var result = db.GetDataTable(sql);
//Show result in Command Line
foreach (IDataRow row in result)
{
foreach (object obj in row)
{
Console.Write(obj);
}
}
Assert.AreEqual(result.Count, 1);
//Drop Table Sale (Firts drop the table contains foreign keys)
sql = generator.Drop(sale);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(sale.Name));
//Drop Table Customer
sql = generator.Drop(customer);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(sale.Name));
//Drop Table Product
sql = generator.Drop(product);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(sale.Name));
//Drop Table Tax
sql = generator.Drop(tax);
db.Execute(sql);
Assert.IsFalse(db.ExistsTable(sale.Name));
}
