public static bool GenerateRename(NameWithSchema oldName, NameWithSchema newName, Action <NameWithSchema, string> changeSchema, Action <NameWithSchema, string> rename, bool allowChangeSchema, bool allowRename, DbDiffOptions opts)
{
newName = GenerateNewName(oldName, newName, opts);
if (DbDiffTool.EqualFullNames(oldName, newName, opts))
{
return(true);
}
if (!EqualSchemas(oldName.Schema, newName.Schema, opts) && !allowChangeSchema)
{
return(false);
}
if (oldName.Name != newName.Name && !allowRename)
{
return(false);
}
if (!EqualSchemas(oldName.Schema, newName.Schema, opts))
{
changeSchema(oldName, newName.Schema);
}
if (oldName.Name != newName.Name)
{
rename(new NameWithSchema(newName.Schema, oldName.Name), newName.Name);
}
return(true);
}
public static bool GenerateRenameSpecificObject(ISpecificObjectStructure oldObj, NameWithSchema newName, Action <ISpecificObjectStructure, string> changeSchema, Action <ISpecificObjectStructure, string> rename, bool allowChangeSchema, bool allowRename, DbDiffOptions opts)
{
newName = GenerateNewName(oldObj.ObjectName, newName, opts);
if (DbDiffTool.EqualFullNames(oldObj.ObjectName, newName, opts))
{
return(true);
}
if (!EqualSchemas(oldObj.ObjectName.Schema, newName.Schema, opts) && !allowChangeSchema)
{
return(false);
}
if (oldObj.ObjectName.Name != newName.Name && !allowRename)
{
return(false);
}
if (!EqualSchemas(oldObj.ObjectName.Schema, newName.Schema, opts))
{
changeSchema(oldObj, newName.Schema);
}
if (oldObj.ObjectName.Name != newName.Name)
{
var tmpo = (SpecificObjectStructure)oldObj.CloneObject();
tmpo.ObjectName = new NameWithSchema(newName.Schema, oldObj.ObjectName.Name);
rename(tmpo, newName.Name);
}
return(true);
}
public static bool EqualDomains(IDomainStructure src, IDomainStructure dst, DbDiffOptions opts, bool testName)
{
if (testName && !DbDiffTool.EqualFullNames(src.FullName, dst.FullName, opts))
{
opts.DiffLogger.Trace("Domain: different names {0}; {1}", src.FullName, dst.FullName);
return(false);
}
if (!EqualTypes(src.DataType, dst.DataType, opts))
{
opts.DiffLogger.Trace("Domain {0}, {1}: different types {2}; {3}", src.FullName, dst.FullName, src.DataType, dst.DataType);
return(false);
}
if (src.IsNullable != dst.IsNullable)
{
opts.DiffLogger.Trace("Domain {0}, {1}: different nullable {2}; {3}", src.FullName, dst.FullName, src.IsNullable, dst.IsNullable);
return(false);
}
return(true);
}
public static bool EqualsColumns(IColumnStructure a, IColumnStructure b, bool checkName, DbDiffOptions opts, DbObjectPairing pairing)
{
if (a.DefaultValue == null)
{
if (a.DefaultValue != b.DefaultValue)
{
opts.DiffLogger.Trace("Column {0}, {1}: different default values: {2}; {3}", a, b, a.DefaultValue, b.DefaultValue);
return(false);
}
}
else
{
if (!a.DefaultValue.Equals(b.DefaultValue))
{
opts.DiffLogger.Trace("Column {0}, {1}: different default values: {2}; {3}", a, b, a.DefaultValue, b.DefaultValue);
return(false);
}
}
if (checkName && !DbDiffTool.EqualNames(a.ColumnName, b.ColumnName, opts))
{
opts.DiffLogger.Trace("Column, different name: {0}; {1}", a, b);
return(false);
}
if (!DbDiffTool.EqualFullNames(a.Domain, b.Domain, opts))
{
opts.DiffLogger.Trace("Column {0}, {1}: different domain: {2}; {3}", a, b, a.Domain, b.Domain);
return(false);
}
if (a.IsNullable != b.IsNullable)
{
opts.DiffLogger.Trace("Column {0}, {1}: different nullable: {2}; {3}", a, b, a.IsNullable, b.IsNullable);
return(false);
}
var btype = b.DataType;
var atype = a.DataType;
if (pairing != null && pairing.Target != null && pairing.Source.Dialect != null)
{
btype = pairing.Source.Dialect.MigrateDataType(b, btype, pairing.Source.Dialect.GetDefaultMigrationProfile(), null);
btype = pairing.Source.Dialect.GenericTypeToSpecific(btype).ToGenericType();
// normalize type
atype = pairing.Source.Dialect.GenericTypeToSpecific(atype).ToGenericType();
}
if (!EqualTypes(atype, btype, opts))
{
opts.DiffLogger.Trace("Column {0}, {1}: different types: {2}; {3}", a, b, a.DataType, b.DataType);
return(false);
}
if (!opts.IgnoreColumnCollation && a.Collation != b.Collation)
{
opts.DiffLogger.Trace("Column {0}, {1}: different collations: {2}; {3}", a, b, a.Collation, b.Collation);
return(false);
}
if (!opts.IgnoreColumnCharacterSet && a.CharacterSet != b.CharacterSet)
{
opts.DiffLogger.Trace("Column {0}, {1}: different character sets: {2}; {3}", a, b, a.CharacterSet, b.CharacterSet);
return(false);
}
return(true);
}
public static void AlterTable(AlterPlan plan, ITableStructure oldTable, ITableStructure newTable, DbDiffOptions opts, DbObjectPairing pairing)
{
//plan.BeginFixedOrder();
if (oldTable == null)
{
throw new ArgumentNullException("oldTable", "DAE-00240 oldTable is null");
}
if (newTable == null)
{
throw new ArgumentNullException("newTable", "DAE-00241 newTable is null");
}
//bool processed;
//proc.AlterTable(oldTable, newTable, out processed);
//if (processed) return;
InMemoryTableOperation dataOps = null;
if (oldTable.FixedData != null)
{
dataOps = new InMemoryTableOperation(oldTable.FixedData.Structure);
}
NameWithSchema newTableName = GenerateNewName(oldTable.FullName, newTable.FullName, opts);
bool permuteColumns = false;
bool insertColumns = false;
//bool renameColumns = false;
List <int> columnMap = new List <int>();
List <int> constraintMap = new List <int>();
foreach (var col in newTable.Columns)
{
columnMap.Add(oldTable.Columns.IndexOfIf(c => c.GroupId == col.GroupId));
}
foreach (var cnt in newTable.Constraints)
{
int cindex = oldTable.Constraints.IndexOfIf(c => c.GroupId == cnt.GroupId);
if (cindex < 0 && cnt is IPrimaryKey)
{
// primary keys for one table are equal
cindex = oldTable.Constraints.IndexOfIf(c => c is IPrimaryKey);
}
constraintMap.Add(cindex);
}
if (!opts.IgnoreColumnOrder)
{
// count alter requests
int lastcol = -1;
foreach (int col in columnMap)
{
if (col < 0)
{
continue;
}
if (col < lastcol)
{
permuteColumns = true;
}
lastcol = col;
}
bool wasins = false;
foreach (int col in columnMap)
{
if (col < 0)
{
wasins = true;
}
if (col >= 0 && wasins)
{
insertColumns = true;
}
}
}
int index;
// drop constraints
index = 0;
foreach (IConstraint cnt in oldTable.Constraints)
{
if (constraintMap.IndexOf(index) < 0)
{
plan.DropConstraint(cnt);
}
index++;
}
// drop columns
index = 0;
foreach (IColumnStructure col in oldTable.Columns)
{
if (columnMap.IndexOf(index) < 0)
{
plan.DropColumn(col);
if (dataOps != null)
{
dataOps.DropColumn(col.ColumnName);
}
}
index++;
}
if (!DbDiffTool.EqualFullNames(oldTable.FullName, newTable.FullName, opts))
{
plan.RenameTable(oldTable, newTable.FullName);
}
// create columns
index = 0;
foreach (IColumnStructure col in newTable.Columns)
{
if (columnMap[index] < 0)
{
ColumnStructure newcol = new ColumnStructure(col);
plan.CreateColumn(oldTable, newcol);
if (dataOps != null)
{
dataOps.CreateColumn(newcol);
}
}
index++;
}
// change columns
index = 0;
foreach (IColumnStructure col in newTable.Columns)
{
if (columnMap[index] >= 0)
{
IColumnStructure src = oldTable.Columns[columnMap[index]];
if (!DbDiffTool.EqualsColumns(src, col, true, opts, pairing))
{
using (var ctx = new DbDiffChangeLoggerContext(opts, NopLogger.Instance, DbDiffOptsLogger.DiffLogger))
{
if (DbDiffTool.EqualsColumns(src, col, false, opts, pairing))
{
plan.RenameColumn(src, col.ColumnName);
}
else
{
plan.ChangeColumn(src, col);
}
if (dataOps != null && src.ColumnName != col.ColumnName)
{
dataOps.RenameColumn(src.ColumnName, col.ColumnName);
}
}
}
}
index++;
}
// create fixed data script
var script = AlterFixedData(oldTable.FixedData, newTable.FixedData, dataOps, opts);
if (script != null)
{
plan.UpdateData(oldTable.FullName, script);
}
// change constraints
index = 0;
foreach (IConstraint cnt in newTable.Constraints)
{
if (constraintMap[index] >= 0)
{
IConstraint src = oldTable.Constraints[constraintMap[index]];
if (DbDiffTool.EqualsConstraints(src, cnt, opts, false, pairing) && src.Name != cnt.Name)
{
if (cnt is IPrimaryKey && (pairing.Source.Dialect.DialectCaps.AnonymousPrimaryKey || pairing.Target.Dialect.DialectCaps.AnonymousPrimaryKey))
{
// do nothing
}
else
{
plan.RenameConstraint(src, cnt.Name);
}
}
else
{
if (!DbDiffTool.EqualsConstraints(src, cnt, opts, true, pairing))
{
plan.ChangeConstraint(src, cnt);
}
}
}
index++;
}
// create constraints
index = 0;
foreach (IConstraint cnt in newTable.Constraints)
{
if (constraintMap[index] < 0)
{
plan.CreateConstraint(oldTable, cnt);
}
index++;;
}
if (permuteColumns || insertColumns)
{
plan.ReorderColumns(oldTable, new List <string>((from c in newTable.Columns select c.ColumnName)));
}
var alteredOptions = GetTableAlteredOptions(oldTable, newTable, opts);
if (alteredOptions.Count > 0)
{
plan.ChangeTableOptions(oldTable, alteredOptions);
}
//plan.EndFixedOrder();
}