public DropForeignKeyOperation(AddForeignKeyOperation inverse, object anonymousArguments = null)
: base(anonymousArguments)
{
//Contract.Requires(inverse != null);
_inverse = inverse;
}
public void Inverse_should_return_add_foreign_key_operation()
{
var addForeignKeyOperation = new AddForeignKeyOperation();
var dropForeignKeyOperation = new DropForeignKeyOperation(addForeignKeyOperation);
Assert.Same(addForeignKeyOperation, dropForeignKeyOperation.Inverse);
}
public DropForeignKeyOperation(AddForeignKeyOperation inverse, object anonymousArguments = null)
: base(anonymousArguments)
{
Check.NotNull(inverse, "inverse");
_inverse = inverse;
}
protected override void Generate(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
var isReadonly = ReadonlyEntities.Contains(addForeignKeyOperation.PrincipalTable) || ReadonlyEntities.Contains(addForeignKeyOperation.DependentTable); ;
//if (!isReadonly)
{
base.Generate(addForeignKeyOperation, writer);
}
}
public void DefaultName_is_restricted_to_128_chars()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "P",
DependentTable = "D"
};
addForeignKeyOperation.DependentColumns.Add(new string('c', 150));
Assert.Equal(128, addForeignKeyOperation.DefaultName.Length);
}
public void CreateCreateIndexOperation_should_return_corresponding_create_index_operation()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "P",
DependentTable = "D",
Name = "Foo"
};
addForeignKeyOperation.DependentColumns.Add("fk");
var createIndexOperation = addForeignKeyOperation.CreateCreateIndexOperation();
Assert.Equal(createIndexOperation.DefaultName, createIndexOperation.Name);
Assert.Equal("D", createIndexOperation.Table);
Assert.Equal("fk", createIndexOperation.Columns.Single());
}
public void Inverse_should_produce_drop_foreign_key_operation()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "P",
DependentTable = "D",
Name = "Foo"
};
addForeignKeyOperation.PrincipalColumns.Add("pk");
addForeignKeyOperation.DependentColumns.Add("fk");
var dropForeignKeyOperation = (DropForeignKeyOperation)addForeignKeyOperation.Inverse;
Assert.Equal("P", dropForeignKeyOperation.PrincipalTable);
Assert.Equal("D", dropForeignKeyOperation.DependentTable);
Assert.Equal("fk", dropForeignKeyOperation.DependentColumns.Single());
Assert.Equal("Foo", dropForeignKeyOperation.Name);
Assert.Equal("FK_D_P_fk", dropForeignKeyOperation.DefaultName);
}
public void Can_get_and_set_properties()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "P",
DependentTable = "D",
CascadeDelete = true,
Name = "Foo"
};
addForeignKeyOperation.PrincipalColumns.Add("pk");
addForeignKeyOperation.DependentColumns.Add("fk");
Assert.Equal("P", addForeignKeyOperation.PrincipalTable);
Assert.Equal("D", addForeignKeyOperation.DependentTable);
Assert.Equal("pk", addForeignKeyOperation.PrincipalColumns.Single());
Assert.Equal("fk", addForeignKeyOperation.DependentColumns.Single());
Assert.True(addForeignKeyOperation.CascadeDelete);
Assert.Equal("Foo", addForeignKeyOperation.Name);
Assert.Equal("FK_D_P_fk", addForeignKeyOperation.DefaultName);
Assert.False(addForeignKeyOperation.HasDefaultName);
}
public void Inverse_should_produce_drop_foreign_key_operation()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "P",
DependentTable = "D",
Name = "Foo",
IsSystem = true
};
addForeignKeyOperation.PrincipalColumns.Add("pk");
addForeignKeyOperation.DependentColumns.Add("fk");
var dropForeignKeyOperation = (DropForeignKeyOperation)addForeignKeyOperation.Inverse;
Assert.Equal("P", dropForeignKeyOperation.PrincipalTable);
Assert.Equal("D", dropForeignKeyOperation.DependentTable);
Assert.Equal("fk", dropForeignKeyOperation.DependentColumns.Single());
Assert.Equal("Foo", dropForeignKeyOperation.Name);
Assert.Equal("FK_D_P_fk", dropForeignKeyOperation.DefaultName);
Assert.True(dropForeignKeyOperation.IsSystem);
}
public void Can_get_and_set_properties()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "P",
DependentTable = "D",
CascadeDelete = true,
Name = "Foo"
};
addForeignKeyOperation.PrincipalColumns.Add("pk");
addForeignKeyOperation.DependentColumns.Add("fk");
Assert.Equal("P", addForeignKeyOperation.PrincipalTable);
Assert.Equal("D", addForeignKeyOperation.DependentTable);
Assert.Equal("pk", addForeignKeyOperation.PrincipalColumns.Single());
Assert.Equal("fk", addForeignKeyOperation.DependentColumns.Single());
Assert.True(addForeignKeyOperation.CascadeDelete);
Assert.Equal("Foo", addForeignKeyOperation.Name);
Assert.Equal("FK_D_P_fk", addForeignKeyOperation.DefaultName);
Assert.False(addForeignKeyOperation.HasDefaultName);
}
public void CreateDropIndexOperation_should_return_corresponding_drop_index_operation()
{
var addForeignKeyOperation
= new AddForeignKeyOperation
{
DependentTable = "D"
};
addForeignKeyOperation.DependentColumns.Add("fk");
var dropForeignKeyOperation
= new DropForeignKeyOperation(addForeignKeyOperation)
{
DependentTable = "D"
};
dropForeignKeyOperation.DependentColumns.Add("fk");
var dropIndexOperation = dropForeignKeyOperation.CreateDropIndexOperation();
Assert.Equal("D", dropIndexOperation.Table);
Assert.NotNull(dropIndexOperation.Inverse);
Assert.Equal("fk", dropIndexOperation.Columns.Single());
}
public void CreateDropIndexOperation_should_return_corresponding_drop_index_operation()
{
var addForeignKeyOperation
= new AddForeignKeyOperation
{
DependentTable = "D"
};
addForeignKeyOperation.DependentColumns.Add("fk");
var dropForeignKeyOperation
= new DropForeignKeyOperation(addForeignKeyOperation)
{
DependentTable = "D"
};
dropForeignKeyOperation.DependentColumns.Add("fk");
var dropIndexOperation = dropForeignKeyOperation.CreateDropIndexOperation();
Assert.Equal("D", dropIndexOperation.Table);
Assert.NotNull(dropIndexOperation.Inverse);
Assert.Equal("fk", dropIndexOperation.Columns.Single());
}
protected virtual MigrationStatement Generate(AddForeignKeyOperation op)
{
StringBuilder sb = new StringBuilder();
string fkName = op.Name;
if (fkName.Length > 64)
{
fkName = "FK_" + Guid.NewGuid().ToString().Replace("-", "");
}
sb.Append("alter table `" + TrimSchemaPrefix(op.DependentTable) + "` add constraint `" + TrimSchemaPrefix(fkName) + "` " +
" foreign key ");
sb.Append("(" + string.Join(",", op.DependentColumns.Select(c => "`" + c + "`")) + ") ");
sb.Append("references `" + TrimSchemaPrefix(op.PrincipalTable) + "` ( " + string.Join(",", op.PrincipalColumns.Select(c => "`" + c + "`")) + ") ");
if (op.CascadeDelete)
{
sb.Append(" on update cascade on delete cascade ");
}
return new MigrationStatement { Sql = sb.ToString() };
}
protected override void GenerateInline(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
writer.WriteLine();
writer.Write(".ForeignKey(\"" + TrimSchemaPrefix(addForeignKeyOperation.PrincipalTable) + "\", ");
Generate(addForeignKeyOperation.DependentColumns, writer);
writer.Write(addForeignKeyOperation.CascadeDelete ? ", cascadeDelete: true)" : ")");
}
protected virtual MigrationStatement Generate(AddForeignKeyOperation op)
{
StringBuilder sb = new StringBuilder();
sb.Append("alter table `" + op.DependentTable + "` add constraint `" + op.Name + "` " +
" foreign key ");
sb.Append("(" + string.Join(",", op.DependentColumns.Select(c => "`" + c + "`")) + ") ");
sb.Append("references `" + op.PrincipalTable + "` ( " + string.Join(",", op.PrincipalColumns.Select(c => "`" + c + "`")) + ") ");
if (op.CascadeDelete)
{
sb.Append(" on update cascade on delete cascade ");
}
return new MigrationStatement { Sql = sb.ToString() };
}
/// <summary>
/// Generates code to perform an <see cref="AddForeignKeyOperation" /> as part of a <see cref="CreateTableOperation" />.
/// </summary>
/// <param name="addForeignKeyOperation"> The operation to generate code for. </param>
/// <param name="writer"> Text writer to add the generated code to. </param>
protected virtual void GenerateInline(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
Check.NotNull(addForeignKeyOperation, "addForeignKeyOperation");
Check.NotNull(writer, "writer");
writer.WriteLine(" _");
writer.Write(".ForeignKey(" + Quote(addForeignKeyOperation.PrincipalTable) + ", ");
Generate(addForeignKeyOperation.DependentColumns, writer);
if (addForeignKeyOperation.CascadeDelete)
{
writer.Write(", cascadeDelete := True");
}
writer.Write(")");
}
public void Generate_can_output_add_fk_statement()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "Customers",
DependentTable = "Orders",
CascadeDelete = true
};
addForeignKeyOperation.PrincipalColumns.Add("CustomerId");
addForeignKeyOperation.DependentColumns.Add("CustomerId");
var migrationSqlGenerator = new SqlCeMigrationSqlGenerator();
var sql = migrationSqlGenerator.Generate(new[] { addForeignKeyOperation }, "4.0").Join(s => s.Sql, Environment.NewLine);
Assert.Contains(
@"ALTER TABLE [Orders] ADD CONSTRAINT [FK_Orders_Customers_CustomerId] FOREIGN KEY ([CustomerId]) REFERENCES [Customers] ([CustomerId]) ON DELETE CASCADE",
sql);
}
public void Generate_can_output_composite_add_foreign_key()
{
var codeGenerator = new VisualBasicMigrationCodeGenerator();
var addForeignKeyOperation
= new AddForeignKeyOperation
{
DependentTable = "Orders",
PrincipalTable = "Customers"
};
addForeignKeyOperation.DependentColumns.Add("CustomerId1");
addForeignKeyOperation.DependentColumns.Add("CustomerId2");
addForeignKeyOperation.PrincipalColumns.Add("Id1");
addForeignKeyOperation.PrincipalColumns.Add("Id2");
var generatedMigration
= codeGenerator.Generate(
"Migration",
new MigrationOperation[] { addForeignKeyOperation },
"Source",
"Target",
"Foo",
"Bar");
Assert.Equal(
@"Imports System
Imports System.Data.Entity.Migrations
Namespace Foo
Public Partial Class Bar
Inherits DbMigration
Public Overrides Sub Up()
AddForeignKey(""Orders"", New String() { ""CustomerId1"", ""CustomerId2"" }, ""Customers"", New String() { ""Id1"", ""Id2"" })
End Sub
Public Overrides Sub Down()
DropForeignKey(""Orders"", New String() { ""CustomerId1"", ""CustomerId2"" }, ""Customers"")
End Sub
End Class
End Namespace
",
generatedMigration.UserCode);
}
public void Generate_can_output_create_table_statement()
{
var createTableOperation = new CreateTableOperation("Customers");
var idColumn = new ColumnModel(PrimitiveTypeKind.Int32)
{
Name = "I.d",
IsNullable = true,
IsIdentity = true
};
createTableOperation.Columns.Add(idColumn);
createTableOperation.Columns.Add(
new ColumnModel(PrimitiveTypeKind.String)
{
Name = "Name",
IsNullable = false
});
createTableOperation.PrimaryKey = new AddPrimaryKeyOperation
{
Name = "MyPK"
};
createTableOperation.PrimaryKey.Columns.Add(idColumn.Name);
var codeGenerator = new CSharpMigrationCodeGenerator();
var addForeignKeyOperation = new AddForeignKeyOperation
{
DependentTable = "Customers",
PrincipalTable = "Blogs",
CascadeDelete = true
};
addForeignKeyOperation.DependentColumns.Add("Blog.Id");
addForeignKeyOperation.PrincipalColumns.Add("Id");
var generatedMigration
= codeGenerator.Generate(
"Migration",
new MigrationOperation[]
{
createTableOperation,
addForeignKeyOperation,
addForeignKeyOperation.CreateCreateIndexOperation()
},
"Source",
"Target",
"Foo",
"Bar");
Assert.Equal(
@"namespace Foo
{
using System;
using System.Data.Entity.Migrations;
public partial class Bar : DbMigration
{
public override void Up()
{
CreateTable(
""Customers"",
c => new
{
Id = c.Int(name: ""I.d"", identity: true),
Name = c.String(nullable: false),
})
.PrimaryKey(t => t.Id, name: ""MyPK"")
.ForeignKey(""Blogs"", t => t.BlogId, cascadeDelete: true)
.Index(t => t.BlogId);
}
public override void Down()
{
DropIndex(""Customers"", new[] { ""Blog.Id"" });
DropForeignKey(""Customers"", ""Blog.Id"", ""Blogs"");
DropTable(""Customers"");
}
}
}
",
generatedMigration.UserCode);
Assert.Equal(
@"// <auto-generated />
namespace Foo
{
using System.CodeDom.Compiler;
using System.Data.Entity.Migrations;
using System.Data.Entity.Migrations.Infrastructure;
using System.Resources;
[GeneratedCode(""EntityFramework.Migrations"", """ + typeof(DbContext).Assembly().GetInformationalVersion() + @""")]
public sealed partial class Bar : IMigrationMetadata
{
private readonly ResourceManager Resources = new ResourceManager(typeof(Bar));
string IMigrationMetadata.Id
{
get { return ""Migration""; }
}
string IMigrationMetadata.Source
{
get { return Resources.GetString(""Source""); }
}
string IMigrationMetadata.Target
{
get { return Resources.GetString(""Target""); }
}
}
}
",
generatedMigration.DesignerCode);
Assert.Equal("cs", generatedMigration.Language);
Assert.Equal(2, generatedMigration.Resources.Count);
Assert.Equal("Source", generatedMigration.Resources["Source"]);
Assert.Equal("Target", generatedMigration.Resources["Target"]);
}
public void CreateForeignKeyOperation()
{
var migrationOperations = new List<MigrationOperation>();
// create dependant table Posts
var createTableOperation = CreateTableOperation();
migrationOperations.Add(createTableOperation);
// Add column BlogId to create the constraints
if (ProviderManifest == null)
ProviderManifest = new MySqlProviderManifest(Version.ToString());
TypeUsage tu = TypeUsage.CreateDefaultTypeUsage(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32));
TypeUsage result = ProviderManifest.GetStoreType(tu);
var intColumn = new ColumnModel(PrimitiveTypeKind.Int32, result)
{
Name = "BlogId",
IsNullable = false
};
var addColumnMigratioOperation = new AddColumnOperation("Posts", intColumn);
migrationOperations.Add(addColumnMigratioOperation);
// create constrain object
var createForeignkeyOperation = new AddForeignKeyOperation();
createForeignkeyOperation.Name = "FKBlogs";
createForeignkeyOperation.DependentTable = "Posts";
createForeignkeyOperation.DependentColumns.Add("BlogId");
createForeignkeyOperation.CascadeDelete = true;
createForeignkeyOperation.PrincipalTable = "Blogs";
createForeignkeyOperation.PrincipalColumns.Add("BlogId");
//create index to use
migrationOperations.Add(createForeignkeyOperation.CreateCreateIndexOperation());
migrationOperations.Add(createForeignkeyOperation);
using (BlogContext context = new BlogContext())
{
if (context.Database.Exists()) context.Database.Delete();
context.Database.Create();
Assert.AreEqual(true, GenerateAndExecuteMySQLStatements(migrationOperations));
using (var conn = new MySqlConnection(context.Database.Connection.ConnectionString))
{
if (conn.State == System.Data.ConnectionState.Closed) conn.Open();
// check for foreign key creation
MySqlCommand query = new MySqlCommand("select Count(*) from information_schema.table_constraints where constraint_type = 'foreign key' and constraint_schema = '" + conn.Database + "' and constraint_name = 'FKBlogs'", conn);
int rows = Convert.ToInt32(query.ExecuteScalar());
Assert.AreEqual(1, rows);
// check for table creation
query = new MySqlCommand("select Count(*) from information_schema.Tables WHERE `table_name` = 'Posts' and `table_schema` = '" + conn.Database + "' ", conn);
rows = Convert.ToInt32(query.ExecuteScalar());
Assert.AreEqual(1, rows);
conn.Close();
}
// Test fix for
MySqlConnection con = GetConnectionFromContext(context);
con.Open();
try
{
MySqlCommand cmd = new MySqlCommand("show create table `posts`", con);
using (MySqlDataReader r = cmd.ExecuteReader())
{
r.Read();
string sql = r.GetString(1);
Assert.IsTrue(sql.IndexOf(
" CONSTRAINT `FKBlogs` FOREIGN KEY (`BlogId`) REFERENCES `blogs` (`BlogId`) ON DELETE CASCADE ON UPDATE CASCADE",
StringComparison.OrdinalIgnoreCase) != -1);
}
}
finally
{
con.Close();
}
}
}
public void CreateForeignKeyOperation()
{
var migrationOperations = new List<MigrationOperation>();
// create dependant table Posts
var createTableOperation = CreateTableOperation();
migrationOperations.Add(createTableOperation);
// Add column BlogId to create the constraints
if (ProviderManifest == null)
ProviderManifest = new MySqlProviderManifest(Version.ToString());
TypeUsage tu = TypeUsage.CreateDefaultTypeUsage(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32));
TypeUsage result = ProviderManifest.GetStoreType(tu);
var intColumn = new ColumnModel(PrimitiveTypeKind.Int32, result)
{
Name = "BlogId",
IsNullable = false
};
var addColumnMigratioOperation = new AddColumnOperation("Posts", intColumn);
migrationOperations.Add(addColumnMigratioOperation);
// create constrain object
var createForeignkeyOperation = new AddForeignKeyOperation();
createForeignkeyOperation.Name = "FKBlogs";
createForeignkeyOperation.DependentTable = "Posts";
createForeignkeyOperation.DependentColumns.Add("BlogId");
createForeignkeyOperation.CascadeDelete = true;
createForeignkeyOperation.PrincipalTable = "Blogs";
createForeignkeyOperation.PrincipalColumns.Add("BlogId");
//create index to use
migrationOperations.Add(createForeignkeyOperation.CreateCreateIndexOperation());
migrationOperations.Add(createForeignkeyOperation);
using (BlogContext context = new BlogContext())
{
if (context.Database.Exists()) context.Database.Delete();
context.Database.Create();
Assert.AreEqual(true, GenerateAndExecuteMySQLStatements(migrationOperations));
using (var conn = new MySqlConnection(context.Database.Connection.ConnectionString))
{
if (conn.State == System.Data.ConnectionState.Closed) conn.Open();
// check for foreign key creation
MySqlCommand query = new MySqlCommand("select Count(*) from information_schema.table_constraints where constraint_type = 'foreign key' and constraint_schema = '" + conn.Database + "' and constraint_name = 'FKBlogs'", conn);
int rows = Convert.ToInt32(query.ExecuteScalar());
Assert.AreEqual(1, rows);
// check for table creation
query = new MySqlCommand("select Count(*) from information_schema.Tables WHERE `table_name` = 'Posts' and `table_schema` = '" + conn.Database + "' ", conn);
rows = Convert.ToInt32(query.ExecuteScalar());
Assert.AreEqual(1, rows);
conn.Close();
}
}
}
/// <summary>
/// Generates code to perform an <see cref = "AddForeignKeyOperation" />.
/// </summary>
/// <param name = "addForeignKeyOperation">The operation to generate code for.</param>
/// <param name = "writer">Text writer to add the generated code to.</param>
protected virtual void Generate(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
Contract.Requires(addForeignKeyOperation != null);
Contract.Requires(writer != null);
writer.Write("AddForeignKey(");
writer.Write(Quote(addForeignKeyOperation.DependentTable));
writer.Write(", ");
var compositeKey = addForeignKeyOperation.DependentColumns.Count() > 1;
if (compositeKey)
{
writer.Write("new[] { ");
}
writer.Write(addForeignKeyOperation.DependentColumns.Join(Quote));
if (compositeKey)
{
writer.Write(" }");
}
writer.Write(", ");
writer.Write(Quote(addForeignKeyOperation.PrincipalTable));
if (addForeignKeyOperation.PrincipalColumns.Any())
{
writer.Write(", ");
if (compositeKey)
{
writer.Write("new[] { ");
}
writer.Write(addForeignKeyOperation.PrincipalColumns.Join(Quote));
if (compositeKey)
{
writer.Write(" }");
}
}
if (addForeignKeyOperation.CascadeDelete)
{
writer.Write(", cascadeDelete: true");
}
if (!addForeignKeyOperation.HasDefaultName)
{
writer.Write(", name: ");
writer.Write(Quote(addForeignKeyOperation.Name));
}
writer.WriteLine(");");
}
private void Convert(AddForeignKeyOperation addForeignKeyOperation)
{
StringBuilder sql = new StringBuilder();
sql.Append("ALTER TABLE ");
AppendTableName(addForeignKeyOperation.DependentTable, sql);
sql.Append(" ADD CONSTRAINT \"");
sql.Append(addForeignKeyOperation.Name);
sql.Append("\" FOREIGN KEY (");
foreach (var column in addForeignKeyOperation.DependentColumns)
{
sql.Append('"');
sql.Append(column);
sql.Append("\",");
}
sql.Remove(sql.Length - 1, 1);
sql.Append(") REFERENCES ");
AppendTableName(addForeignKeyOperation.PrincipalTable, sql);
sql.Append(" (");
foreach (var column in addForeignKeyOperation.PrincipalColumns)
{
sql.Append('"');
sql.Append(column);
sql.Append("\",");
}
sql.Remove(sql.Length - 1, 1);
sql.Append(")");
if (addForeignKeyOperation.CascadeDelete)
{
sql.Append(" ON DELETE CASCADE");
}
AddStatment(sql);
}
public void Generate_can_output_composite_add_foreign_key()
{
var codeGenerator = new CSharpMigrationCodeGenerator();
var addForeignKeyOperation
= new AddForeignKeyOperation
{
DependentTable = "Orders",
PrincipalTable = "Customers"
};
addForeignKeyOperation.DependentColumns.Add("CustomerId1");
addForeignKeyOperation.DependentColumns.Add("CustomerId2");
addForeignKeyOperation.PrincipalColumns.Add("Id1");
addForeignKeyOperation.PrincipalColumns.Add("Id2");
var generatedMigration
= codeGenerator.Generate(
"Migration",
new MigrationOperation[] { addForeignKeyOperation },
"Source",
"Target",
"Foo",
"Bar");
Assert.Equal(
@"namespace Foo
{
using System;
using System.Data.Entity.Migrations;
public partial class Bar : DbMigration
{
public override void Up()
{
AddForeignKey(""Orders"", new[] { ""CustomerId1"", ""CustomerId2"" }, ""Customers"", new[] { ""Id1"", ""Id2"" });
}
public override void Down()
{
DropForeignKey(""Orders"", new[] { ""CustomerId1"", ""CustomerId2"" }, ""Customers"");
}
}
}
",
generatedMigration.UserCode);
}
/// <summary>
/// Generates SQL for a <see cref="AddForeignKeyOperation" />.
/// Generated SQL should be added using the Statement method.
/// </summary>
/// <param name="addForeignKeyOperation"> The operation to produce SQL for. </param>
protected virtual void Generate(AddForeignKeyOperation addForeignKeyOperation)
{
Check.NotNull(addForeignKeyOperation, "addForeignKeyOperation");
using (var writer = Writer())
{
writer.Write("ALTER TABLE ");
writer.Write(Name(addForeignKeyOperation.DependentTable));
writer.Write(" ADD CONSTRAINT ");
writer.Write(Quote(addForeignKeyOperation.Name));
writer.Write(" FOREIGN KEY (");
writer.Write(addForeignKeyOperation.DependentColumns.Select(Quote).Join());
writer.Write(") REFERENCES ");
writer.Write(Name(addForeignKeyOperation.PrincipalTable));
writer.Write(" (");
writer.Write(addForeignKeyOperation.PrincipalColumns.Select(Quote).Join());
writer.Write(")");
if (addForeignKeyOperation.CascadeDelete)
{
writer.Write(" ON DELETE CASCADE");
}
Statement(writer);
}
}
protected override void Generate(AddForeignKeyOperation addForeignKeyOperation)
{
using (var writer = Writer())
{
writer.WriteLine("IF NOT EXISTS(SELECT 1 FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE CONSTRAINT_NAME = '{0}')\r\nBEGIN", addForeignKeyOperation.Name);
writer.Indent++;
writer.Write("ALTER TABLE ");
writer.Write(Name(addForeignKeyOperation.DependentTable));
writer.Write(" ADD CONSTRAINT ");
writer.Write(Quote(addForeignKeyOperation.Name));
writer.Write(" FOREIGN KEY (");
writer.Write(string.Join(", ", addForeignKeyOperation.DependentColumns.Select(Quote)));
writer.Write(") REFERENCES ");
writer.Write(Name(addForeignKeyOperation.PrincipalTable));
writer.Write(" (");
writer.Write(string.Join(", ", addForeignKeyOperation.PrincipalColumns.Select(Quote)));
writer.Write(")");
if (addForeignKeyOperation.CascadeDelete)
writer.Write(" ON DELETE CASCADE");
writer.Indent--;
writer.Write("\r\nEND");
Statement(writer);
}
}
/// <summary>
/// Generates code to perform an <see cref="AddForeignKeyOperation" />.
/// </summary>
/// <param name="addForeignKeyOperation"> The operation to generate code for. </param>
/// <param name="writer"> Text writer to add the generated code to. </param>
protected virtual void Generate(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
Check.NotNull(addForeignKeyOperation, "addForeignKeyOperation");
Check.NotNull(writer, "writer");
writer.Write("AddForeignKey(");
writer.Write(Quote(addForeignKeyOperation.DependentTable));
writer.Write(", ");
var compositeKey = addForeignKeyOperation.DependentColumns.Count() > 1;
if (compositeKey)
{
writer.Write("New String() { ");
}
writer.Write(addForeignKeyOperation.DependentColumns.Join(Quote));
if (compositeKey)
{
writer.Write(" }");
}
writer.Write(", ");
writer.Write(Quote(addForeignKeyOperation.PrincipalTable));
if (addForeignKeyOperation.PrincipalColumns.Any())
{
writer.Write(", ");
if (compositeKey)
{
writer.Write("New String() { ");
}
writer.Write(addForeignKeyOperation.PrincipalColumns.Join(Quote));
if (compositeKey)
{
writer.Write(" }");
}
}
if (addForeignKeyOperation.CascadeDelete)
{
writer.Write(", cascadeDelete := True");
}
if (!addForeignKeyOperation.HasDefaultName)
{
writer.Write(", name := ");
writer.Write(Quote(addForeignKeyOperation.Name));
}
writer.WriteLine(")");
}
/// <summary>
/// Generates code to perform an <see cref = "AddForeignKeyOperation" /> as part of a <see cref = "CreateTableOperation" />.
/// </summary>
/// <param name = "addForeignKeyOperation">The operation to generate code for.</param>
/// <param name = "writer">Text writer to add the generated code to.</param>
protected virtual void GenerateInline(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
Contract.Requires(addForeignKeyOperation != null);
Contract.Requires(writer != null);
writer.WriteLine(" _");
writer.Write(".ForeignKey(" + Quote(addForeignKeyOperation.PrincipalTable) + ", ");
Generate(addForeignKeyOperation.DependentColumns, writer);
if (addForeignKeyOperation.CascadeDelete)
{
writer.Write(", cascadeDelete := True");
}
writer.Write(")");
}
protected override void Generate(AddForeignKeyOperation addForeignKeyOperation, IndentedTextWriter writer)
{
addForeignKeyOperation.PrincipalTable = TrimSchemaPrefix(addForeignKeyOperation.PrincipalTable);
addForeignKeyOperation.DependentTable = TrimSchemaPrefix(addForeignKeyOperation.DependentTable);
base.Generate(addForeignKeyOperation, writer);
}
public void TestAddForeignKeyOperationCascadeDelete()
{
var operations = new List<MigrationOperation>();
var operation = new AddForeignKeyOperation();
operation.Name = "someFK";
operation.PrincipalTable = "somePrincipalTable";
operation.DependentTable = "someDependentTable";
operation.DependentColumns.Add("column1");
operation.DependentColumns.Add("column2");
operation.DependentColumns.Add("column3");
operation.CascadeDelete = true;
operations.Add(operation);
var statments = new NpgsqlMigrationSqlGenerator().Generate(operations, BackendVersion.ToString());
Assert.AreEqual(1, statments.Count());
Assert.AreEqual("ALTER TABLE \"someDependentTable\" ADD CONSTRAINT \"someFK\" FOREIGN KEY (\"column1\",\"column2\",\"column3\") REFERENCES \"somePrincipalTable\" ) ON DELETE CASCADE", statments.ElementAt(0).Sql);
}
public void Generate_can_output_create_table_statement()
{
var createTableOperation = new CreateTableOperation("Customers");
var idColumn = new ColumnModel(PrimitiveTypeKind.Int32)
{
Name = "Id",
IsNullable = true,
IsIdentity = true
};
createTableOperation.Columns.Add(idColumn);
createTableOperation.Columns.Add(
new ColumnModel(PrimitiveTypeKind.String)
{
Name = "Name",
IsNullable = false
});
createTableOperation.PrimaryKey = new AddPrimaryKeyOperation
{
Name = "MyPK"
};
createTableOperation.PrimaryKey.Columns.Add(idColumn.Name);
var codeGenerator = new VisualBasicMigrationCodeGenerator();
var addForeignKeyOperation = new AddForeignKeyOperation
{
DependentTable = "Customers",
PrincipalTable = "Blogs",
CascadeDelete = true
};
addForeignKeyOperation.DependentColumns.Add("Blog_Id");
addForeignKeyOperation.PrincipalColumns.Add("Id");
var generatedMigration
= codeGenerator.Generate(
"Migration",
new MigrationOperation[]
{
createTableOperation,
addForeignKeyOperation,
addForeignKeyOperation.CreateCreateIndexOperation()
},
"Source",
"Target",
"Foo",
"Bar");
Assert.Equal(
@"Imports System
Imports System.Data.Entity.Migrations
Namespace Foo
Public Partial Class Bar
Inherits DbMigration
Public Overrides Sub Up()
CreateTable(
""Customers"",
Function(c) New With
{
.Id = c.Int(identity := True),
.Name = c.String(nullable := False)
}) _
.PrimaryKey(Function(t) t.Id, name := ""MyPK"") _
.ForeignKey(""Blogs"", Function(t) t.Blog_Id, cascadeDelete := True) _
.Index(Function(t) t.Blog_Id)
End Sub
Public Overrides Sub Down()
DropIndex(""Customers"", New String() { ""Blog_Id"" })
DropForeignKey(""Customers"", ""Blog_Id"", ""Blogs"")
DropTable(""Customers"")
End Sub
End Class
End Namespace
",
generatedMigration.UserCode);
Assert.Equal(
@"' <auto-generated />
Imports System.Data.Entity.Migrations
Imports System.Data.Entity.Migrations.Infrastructure
Imports System.Resources
Namespace Foo
Public NotInheritable Partial Class Bar
Implements IMigrationMetadata
Private ReadOnly Resources As New ResourceManager(GetType(Bar))
Private ReadOnly Property IMigrationMetadata_Id() As String Implements IMigrationMetadata.Id
Get
Return ""Migration""
End Get
End Property
Private ReadOnly Property IMigrationMetadata_Source() As String Implements IMigrationMetadata.Source
Get
Return Resources.GetString(""Source"")
End Get
End Property
Private ReadOnly Property IMigrationMetadata_Target() As String Implements IMigrationMetadata.Target
Get
Return Resources.GetString(""Target"")
End Get
End Property
End Class
End Namespace
",
generatedMigration.DesignerCode);
Assert.Equal("vb", generatedMigration.Language);
Assert.Equal(2, generatedMigration.Resources.Count);
Assert.Equal("Source", generatedMigration.Resources["Source"]);
Assert.Equal("Target", generatedMigration.Resources["Target"]);
}
public void GenerateCanOutputAddFkStatement()
{
var addForeignKeyOperation = new AddForeignKeyOperation
{
PrincipalTable = "Customers",
DependentTable = "Orders",
CascadeDelete = true
};
addForeignKeyOperation.PrincipalColumns.Add("CustomerId");
addForeignKeyOperation.DependentColumns.Add("CustomerId");
var migrationSqlGenerator = new PostgreSqlMigrationSqlGenerator();
var sql = migrationSqlGenerator.Generate(new[] { addForeignKeyOperation }, "9.2").Join(s => s.Sql, Environment.NewLine);
Assert.True(
sql.Contains(
"ALTER TABLE \"Orders\" ADD CONSTRAINT \"FK_Orders_Customers_CustomerId\" FOREIGN KEY (\"CustomerId\") REFERENCES \"Customers\" (\"CustomerId\") ON DELETE CASCADE"));
}
protected virtual IEnumerable<MigrationStatement> Generate(AddForeignKeyOperation operation)
{
using (var writer = SqlWriter())
{
writer.Write("ALTER TABLE ");
writer.Write(Quote(operation.DependentTable));
writer.Write(" ADD FOREIGN KEY (");
WriteColumns(writer, operation.DependentColumns.Select(Quote));
writer.Write(") REFERENCES ");
writer.Write(Quote(operation.PrincipalTable));
writer.Write(" (");
WriteColumns(writer, operation.PrincipalColumns.Select(Quote));
writer.Write(")");
if (operation.CascadeDelete)
{
writer.Write(" ON DELETE CASCADE");
}
yield return Statement(writer);
}
}
public DropForeignKeyOperation(AddForeignKeyOperation inverse, object anonymousArguments = null)
: base(anonymousArguments)
{
Check.NotNull <AddForeignKeyOperation>(inverse, nameof(inverse));
this._inverse = inverse;
}
