/// alters table, decomposes to alter actions; doesn't transform alter plan
/// proc must be able to run all logical operations
public static void DecomposeAlterTable(this IAlterProcessor proc, ITableStructure oldTable, ITableStructure newTable, DbDiffOptions options)
{
DbObjectPairing pairing = CreateTablePairing(oldTable, newTable);
// decompose to alter actions
AlterPlan plan = new AlterPlan();
AlterTable(plan, oldTable, newTable, options, pairing);
var run = plan.CreateRunner();
run.Run(proc, options);
}
public static DbObjectPairing CreateTablePairing(ITableStructure oldTable, ITableStructure newTable)
{
DatabaseStructure src = new DatabaseStructure();
DatabaseStructure dst = new DatabaseStructure(src);
src.AddObject(oldTable, true);
dst.AddObject(newTable, true);
DbObjectPairing pairing = new DbObjectPairing(src, dst);
return(pairing);
}
public static AlterPlan PlanAlterTable(ITableStructure oldTable, ITableStructure newTable, DbDiffOptions opts)
{
AlterPlan plan = new AlterPlan();
if (oldTable == null)
{
plan.CreateTable(newTable);
}
else
{
DbObjectPairing pairing = CreateTablePairing(oldTable, newTable);
AlterTable(plan, oldTable, newTable, opts, pairing);
}
return(plan);
}
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 bool EqualsConstraints(IConstraint csrc, IConstraint cdst, DbDiffOptions options, bool checkNames, DbObjectPairing pairing)
{
if (checkNames && !options.IgnoreConstraintNames)
{
if (!EqualNames(csrc.Name, cdst.Name, options))
{
if (csrc is IPrimaryKey && cdst is IPrimaryKey && (pairing.Source.Dialect.DialectCaps.AnonymousPrimaryKey || pairing.Target.Dialect.DialectCaps.AnonymousPrimaryKey))
{
// do nothing
}
else
{
return(false);
}
}
}
if (csrc.GetType() != cdst.GetType())
{
return(false);
}
if (csrc is ColumnsConstraint)
{
ITableStructure tsrc = pairing.Source.FindTable(csrc.Table.FullName);
ITableStructure tdst = pairing.Target.FindTable(cdst.Table.FullName);
if (!EqualsColumnRefs(tsrc, tdst, ((ColumnsConstraint)csrc).Columns, ((ColumnsConstraint)cdst).Columns))
{
return(false);
}
//if (!((ColumnsConstraint)csrc).Columns.EqualSequence(((ColumnsConstraint)cdst).Columns)) return false;
if (csrc is ForeignKey)
{
var fsrc = (ForeignKey)csrc;
var fdst = (ForeignKey)cdst;
if (!EqualFullNames(fsrc.PrimaryKeyTable, fdst.PrimaryKeyTable, options))
{
return(false);
}
ITableStructure psrc = pairing.Source.FindTable(fsrc.PrimaryKeyTable);
ITableStructure pdst = pairing.Target.FindTable(fdst.PrimaryKeyTable);
if (!EqualsColumnRefs(psrc, pdst, fsrc.PrimaryKeyColumns, fdst.PrimaryKeyColumns))
{
return(false);
}
if (fsrc.OnDeleteAction != fdst.OnDeleteAction)
{
return(false);
}
if (fsrc.OnUpdateAction != fdst.OnUpdateAction)
{
return(false);
}
}
if (csrc is IIndex)
{
var isrc = (IndexConstraint)csrc;
var idst = (IndexConstraint)cdst;
if (isrc.IsUnique != idst.IsUnique)
{
return(false);
}
}
}
if (csrc is CheckConstraint)
{
if (((CheckConstraint)csrc).Expression != ((CheckConstraint)cdst).Expression)
{
return(false);
}
}
return(true);
}
public static bool EqualTables(ITableStructure tsrc, ITableStructure tdst, DbDiffOptions options, DbObjectPairing pairing, bool testNames)
{
if (options.IgnoreColumnOrder)
{
if (tsrc.Columns.Count != tdst.Columns.Count)
{
return(false);
}
foreach (var scol in tsrc.Columns)
{
var dcol = (from c in tdst.Columns where c.GroupId == scol.GroupId select c).FirstOrDefault();
if (dcol == null)
{
return(false);
}
using (var ctx = new DbDiffChangeLoggerContext(options, NopLogger.Instance, DbDiffOptsLogger.DiffLogger))
{
if (!EqualsColumns(scol, dcol, true, options, pairing))
{
return(false);
}
}
}
}
else
{
using (var ctx = new DbDiffChangeLoggerContext(options, NopLogger.Instance, DbDiffOptsLogger.DiffLogger))
{
if (!tsrc.Columns.EqualSequence(tdst.Columns, (c1, c2) => EqualsColumns(c1, c2, true, options, pairing)))
{
return(false);
}
}
}
List <IConstraint> csrc = new List <IConstraint>(tsrc.Constraints);
List <IConstraint> cdst = new List <IConstraint>(tdst.Constraints);
csrc.Sort(CompareConstraints);
cdst.Sort(CompareConstraints);
if (!csrc.EqualSequence(cdst, (c1, c2) => EqualsConstraints(c1, c2, options, true, pairing)))
{
return(false);
}
if (testNames && !EqualFullNames(tsrc.FullName, tdst.FullName, options))
{
return(false);
}
if (GetTableAlteredOptions(tsrc, tdst, options).Count > 0)
{
return(false);
}
return(true);
}
public static bool EqualTables(ITableStructure tsrc, ITableStructure tdst, DbDiffOptions options, DbObjectPairing pairing)
{
return(EqualTables(tsrc, tdst, options, pairing, true));
}
public static void AlterDatabase(AlterPlan plan, DbObjectPairing pairing, DbDiffOptions opts)
{
var src = pairing.Source;
var dst = pairing.Target;
//var caps = proc.AlterCaps;
// domains
foreach (IDomainStructure dsrc in src.Domains)
{
IDomainStructure ddst = pairing.FindPair(dsrc);
if (ddst == null)
{
plan.DropDomain(dsrc);
}
else if (!DbDiffTool.EqualDomains(dsrc, ddst, opts, true))
{
if (DbDiffTool.EqualDomains(dsrc, ddst, opts, false))
{
plan.RenameDomain(dsrc, ddst.FullName);
}
else
{
plan.ChangeDomain(dsrc, ddst);
}
}
}
foreach (IDomainStructure ddst in dst.Domains)
{
if (!pairing.IsPaired(ddst))
{
plan.CreateDomain(ddst);
}
}
// drop tables
foreach (ITableStructure tsrc in new List <ITableStructure>(src.Tables))
{
ITableStructure tdst = pairing.FindPair(tsrc);
if (tdst == null)
{
plan.DropTable(tsrc);
}
}
// change tables
foreach (ITableStructure tsrc in new List <ITableStructure>(src.Tables))
{
ITableStructure tdst = pairing.FindPair(tsrc);
if (tdst == null)
{
continue;
}
if (!DbDiffTool.EqualTables(tsrc, tdst, opts, pairing))
{
DbDiffTool.AlterTable(plan, tsrc, tdst, opts, pairing);
}
else
{
DbDiffTool.AlterFixedData(plan, tsrc, tdst, opts);
}
}
// create tables
foreach (ITableStructure tdst in dst.Tables)
{
if (!pairing.IsPaired(tdst))
{
var script = DbDiffTool.AlterFixedData(null, tdst.FixedData, null, opts);
plan.CreateTable(tdst, script);
//if (script != null) plan.UpdateData(tdst.FullName, script);
}
}
// specific objects
foreach (ISpecificObjectStructure osrc in src.GetAllSpecificObjects())
{
var repr = SpecificRepresentationAddonType.Instance.FindRepresentation(osrc.ObjectType);
if (!repr.UseInSynchronization)
{
continue;
}
ISpecificObjectStructure odst = pairing.FindPair(osrc);
if (odst == null)
{
plan.DropSpecificObject(osrc);
//proc.DropSpecificObject(osrc);
}
else if (!DbDiffTool.EqualsSpecificObjects(osrc, odst, opts))
{
DbDiffTool.AlterSpecificObject(osrc, odst, plan, opts, pairing);
}
}
foreach (ISpecificObjectStructure odst in dst.GetAllSpecificObjects())
{
var repr = SpecificRepresentationAddonType.Instance.FindRepresentation(odst.ObjectType);
if (!repr.UseInSynchronization)
{
continue;
}
if (!pairing.IsPaired(odst))
{
plan.CreateSpecificObject(odst);
//proc.CreateSpecificObject(odst);
}
}
foreach (ISchemaStructure ssrc in src.Schemata)
{
ISchemaStructure sdst = pairing.FindPair(ssrc);
if (sdst == null)
{
plan.DropSchema(ssrc);
}
else if (ssrc.SchemaName != sdst.SchemaName)
{
plan.RenameSchema(ssrc, sdst.SchemaName);
//if (caps.RenameSchema) proc.RenameSchema(ssrc, sdst.SchemaName);
//else
//{
// proc.DropSchema(ssrc);
// proc.CreateSchema(sdst);
//}
}
}
foreach (ISchemaStructure sdst in dst.Schemata)
{
if (!pairing.IsPaired(sdst))
{
plan.CreateSchema(sdst);
}
}
var alteredOptions = GetDatabaseAlteredOptions(src, dst, opts);
if (alteredOptions.Count > 0)
{
plan.ChangeDatabaseOptions(null, alteredOptions);
}
if (opts.SchemaMode == DbDiffSchemaMode.Ignore)
{
plan.RunNameTransformation(new SetSchemaNameTransformation(null));
}
}
public static void AlterSpecificObject(ISpecificObjectStructure osrc, ISpecificObjectStructure odst, AlterPlan plan, DbDiffOptions opts, DbObjectPairing pairing)
{
//bool altered = false;
if (osrc.CreateSql == odst.CreateSql)
{
plan.RenameSpecificObject(osrc, odst.ObjectName);
//altered = GenerateRename(osrc.ObjectName, odst.ObjectName,
// (old, sch) =>
// {
// var o2 = new SpecificObjectStructure(osrc);
// o2.ObjectName = old;
// proc.ChangeSpecificObjectSchema(o2, sch);
// },
// (old, nam) =>
// {
// var o2 = new SpecificObjectStructure(osrc);
// o2.ObjectName = old;
// proc.RenameSpecificObject(o2, nam);
// }, caps[osrc.ObjectType].ChangeSchema, caps[osrc.ObjectType].Rename, opts);
}
else
{
plan.ChangeSpecificObject(osrc, odst);
}
//if (!altered)
//{
// proc.DropSpecificObject(osrc);
// SpecificObjectStructure odst2 = new SpecificObjectStructure(odst);
// odst2.ObjectName = GenerateNewName(osrc.ObjectName, odst.ObjectName, opts);
// proc.CreateSpecificObject(odst);
//}
}
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();
}
