public static void AlterComments(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (var oldTable in oldSchema.GetTables())
{
var newTable = newSchema.GetTable(oldTable.Name);
if (newTable == null)
{
continue;
}
foreach (var oldTrigger in oldTable.GetTriggers())
{
var newTrigger =
newTable.GetTrigger(oldTrigger.Name);
if (newTrigger == null)
{
continue;
}
if (oldTrigger.Comment == null &&
newTrigger.Comment != null ||
oldTrigger.Comment != null &&
newTrigger.Comment != null &&
!oldTrigger.Comment.Equals(
newTrigger.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON TRIGGER ");
writer.Write(PgDiffUtils.GetQuotedName(newTrigger.Name));
writer.Write(" ON ");
writer.Write(PgDiffUtils.GetQuotedName(newTrigger.TableName));
writer.Write(" IS ");
writer.Write(newTrigger.Comment);
writer.WriteLine(';');
}
else if (oldTrigger.Comment != null && newTrigger.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON TRIGGER ");
writer.Write(PgDiffUtils.GetQuotedName(newTrigger.Name));
writer.Write(" ON ");
writer.Write(PgDiffUtils.GetQuotedName(newTrigger.TableName));
writer.WriteLine(" IS NULL;");
}
}
}
}
private static void AddDropTableColumns(List <string> statements, PgTable oldTable, PgTable newTable)
{
foreach (var column in oldTable.Columns)
{
if (!newTable.ContainsColumn(column.Name))
{
statements.Add("\tDROP COLUMN " + PgDiffUtils.GetQuotedName(column.Name));
}
}
}
private static void AlterComments(TextWriter writer, PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
if (oldTable.Comment == null &&
newTable.Comment != null ||
oldTable.Comment != null &&
newTable.Comment != null &&
!oldTable.Comment.Equals(newTable.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.Write(" IS ");
writer.Write(newTable.Comment);
writer.WriteLine(';');
}
else if (oldTable.Comment != null && newTable.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.WriteLine(" IS NULL;");
}
foreach (var newColumn in newTable.Columns)
{
var oldColumn = oldTable.GetColumn(newColumn.Name);
var oldComment = oldColumn?.Comment;
var newComment = newColumn.Comment;
if (newComment != null && (!oldComment?.Equals(newComment) ?? newComment != null))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.Write('.');
writer.Write(PgDiffUtils.GetQuotedName(newColumn.Name));
writer.Write(" IS ");
writer.Write(newColumn.Comment);
writer.WriteLine(';');
}
else if (oldComment != null && newComment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.Write('.');
writer.Write(PgDiffUtils.GetQuotedName(newColumn.Name));
writer.WriteLine(" IS NULL;");
}
}
}
private static void DropOldSchemas(TextWriter writer, PgDatabase oldDatabase, PgDatabase newDatabase)
{
foreach (var oldSchema in oldDatabase.Schemas)
{
if (newDatabase.GetSchema(oldSchema.Name) == null)
{
writer.WriteLine();
writer.WriteLine($"DROP SCHEMA {PgDiffUtils.GetQuotedName(oldSchema.Name)} CASCADE;");
}
}
}
private static void AddModifyTableColumns(List <string> statements, PgDiffArguments arguments,
PgTable oldTable, PgTable newTable, List <PgColumn> dropDefaultsColumns)
{
foreach (var newColumn in newTable.Columns)
{
if (!oldTable.ContainsColumn(newColumn.Name))
{
continue;
}
var oldColumn = oldTable.GetColumn(newColumn.Name);
var newColumnName = PgDiffUtils.GetQuotedName(newColumn.Name);
if (!oldColumn.Type.Equals(newColumn.Type))
{
statements.Add("\tALTER COLUMN " + newColumnName + " TYPE "
+ newColumn.Type + " /* "
+ string.Format(Resources.TypeParameterChange, newTable.Name, oldColumn.Type, newColumn.Type) + " */");
}
var oldDefault = oldColumn.DefaultValue ?? "";
var newDefault = newColumn.DefaultValue ?? "";
if (!oldDefault.Equals(newDefault))
{
statements.Add(newDefault.Length == 0
? $"\tALTER COLUMN {newColumnName} DROP DEFAULT"
: $"\tALTER COLUMN {newColumnName} SET DEFAULT {newDefault}");
}
if (oldColumn.NullValue == newColumn.NullValue)
{
continue;
}
if (newColumn.NullValue)
{
statements.Add($"\tALTER COLUMN {newColumnName} DROP NOT NULL");
}
else
{
if (arguments.AddDefaults)
{
var defaultValue = PgColumnUtils.GetDefaultValue(newColumn.Type);
if (defaultValue != null)
{
statements.Add($"\tALTER COLUMN {newColumnName} SET DEFAULT {defaultValue}");
dropDefaultsColumns.Add(newColumn);
}
}
statements.Add($"\tALTER COLUMN {newColumnName} SET NOT NULL");
}
}
}
private static void CheckTablespace(TextWriter writer, PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
if (oldTable.Tablespace == null && newTable.Tablespace == null ||
oldTable.Tablespace != null &&
oldTable.Tablespace.Equals(newTable.Tablespace))
{
return;
}
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine("ALTER TABLE " + PgDiffUtils.GetQuotedName(newTable.Name));
writer.WriteLine("\tTABLESPACE " + newTable.Tablespace + ';');
}
private static void AddAlterStatistics(TextWriter writer, PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
var stats = new Dictionary <string, int?>();
foreach (var newColumn in newTable.Columns)
{
var oldColumn = oldTable.GetColumn(newColumn.Name);
if (oldColumn != null)
{
var oldStat = oldColumn.Statistics;
var newStat = newColumn.Statistics;
int?newStatValue = null;
if (newStat != null && (oldStat == null || !newStat.Equals(oldStat)))
{
newStatValue = newStat;
}
else if (oldStat != null && newStat == null)
{
newStatValue = -1;
}
if (newStatValue != null)
{
stats.Add(newColumn.Name, newStatValue);
}
}
}
foreach (var entry in stats)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ONLY ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.Write(" ALTER COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(entry.Key));
writer.Write(" SET STATISTICS ");
writer.Write(entry.Value);
writer.WriteLine(';');
}
}
private static void UpdateTableColumns(TextWriter writer, PgDiffArguments arguments,
PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
var statements = new List <string>();
var dropDefaultsColumns = new List <PgColumn>();
AddDropTableColumns(statements, oldTable, newTable);
AddCreateTableColumns(
statements, arguments, oldTable, newTable, dropDefaultsColumns);
AddModifyTableColumns(
statements, arguments, oldTable, newTable, dropDefaultsColumns);
if (statements.Count > 0)
{
var quotedTableName =
PgDiffUtils.GetQuotedName(newTable.Name);
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine("ALTER TABLE " + quotedTableName);
for (var i = 0; i < statements.Count; i++)
{
writer.Write(statements[i]);
writer.WriteLine(i + 1 < statements.Count ? "," : ";");
}
if (dropDefaultsColumns.Count > 0)
{
writer.WriteLine();
writer.WriteLine("ALTER TABLE " + quotedTableName);
for (var i = 0; i < dropDefaultsColumns.Count; i++)
{
writer.Write("\tALTER COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(dropDefaultsColumns[i].Name));
writer.Write(" DROP DEFAULT");
writer.WriteLine(i + 1 < dropDefaultsColumns.Count ? "," : ";");
}
}
}
}
public static void DropClusters(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
foreach (var newTable in newSchema.GetTables())
{
var oldTable = oldSchema?.GetTable(newTable.Name);
var oldCluster = oldTable?.ClusterIndexName;
var newCluster = newTable.ClusterIndexName;
if (oldCluster != null && newCluster == null && newTable.ContainsIndex(oldCluster))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.WriteLine(" SET WITHOUT CLUSTER;");
}
}
}
public static void AlterComments(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (var oldIndex in oldSchema.GetIndexes())
{
var newIndex = newSchema.GetIndex(oldIndex.Name);
if (newIndex == null)
{
continue;
}
if (oldIndex.Comment == null &&
newIndex.Comment != null ||
oldIndex.Comment != null &&
newIndex.Comment != null &&
!oldIndex.Comment.Equals(
newIndex.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON INDEX ");
writer.Write(PgDiffUtils.GetQuotedName(newIndex.Name));
writer.Write(" IS ");
writer.Write(newIndex.Comment);
writer.WriteLine(';');
}
else if (oldIndex.Comment != null && newIndex.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON INDEX ");
writer.Write(PgDiffUtils.GetQuotedName(newIndex.Name));
writer.WriteLine(" IS NULL;");
}
}
}
public static void CreateClusters(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
foreach (var newTable in newSchema.GetTables())
{
var oldTable = oldSchema?.GetTable(newTable.Name);
var oldCluster = oldTable?.ClusterIndexName;
var newCluster = newTable.ClusterIndexName;
if (oldCluster == null && newCluster != null ||
oldCluster != null && newCluster != null &&
newCluster.CompareTo(oldCluster) != 0)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.Write(" CLUSTER ON ");
writer.Write(PgDiffUtils.GetQuotedName(newCluster));
writer.WriteLine(';');
}
}
}
private static void AddAlterStorage(TextWriter writer, PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
foreach (var newColumn in newTable.Columns)
{
var oldColumn = oldTable.GetColumn(newColumn.Name);
var oldStorage = string.IsNullOrEmpty(oldColumn?.Storage)
? null
: oldColumn.Storage;
var newStorage = string.IsNullOrEmpty(newColumn.Storage)
? null
: newColumn.Storage;
if (newStorage == null && oldStorage != null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine(Resources.WarningUnableToDetermineStorageType, newTable.Name + '.' + newColumn.Name);
continue;
}
if (newStorage == null || newStorage.EqualsIgnoreCase(oldStorage))
{
continue;
}
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ONLY ");
writer.Write(PgDiffUtils.GetQuotedName(newTable.Name));
writer.Write(" ALTER COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newColumn.Name));
writer.Write(" SET STORAGE ");
writer.Write(newStorage);
writer.Write(';');
}
}
private static void CheckInherits(TextWriter writer, PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
foreach (var tableName in oldTable.GetInherits())
{
if (!newTable.GetInherits().Contains(tableName))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine("ALTER TABLE " + PgDiffUtils.GetQuotedName(newTable.Name));
writer.WriteLine("\tNO INHERIT " + PgDiffUtils.GetQuotedName(tableName) + ';');
}
}
foreach (var tableName in newTable.GetInherits())
{
if (!oldTable.GetInherits().Contains(tableName))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine("ALTER TABLE " + PgDiffUtils.GetQuotedName(newTable.Name));
writer.WriteLine("\tINHERIT " + PgDiffUtils.GetQuotedName(tableName) + ';');
}
}
}
private static void CheckWithOids(TextWriter writer, PgTable oldTable, PgTable newTable, SearchPathHelper searchPathHelper)
{
if (oldTable.With == null && newTable.With == null || oldTable.With != null && oldTable.With.Equals(newTable.With))
{
return;
}
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.WriteLine("ALTER TABLE " + PgDiffUtils.GetQuotedName(newTable.Name));
if (newTable.With == null || "OIDS=false".EqualsIgnoreCase(newTable.With))
{
writer.WriteLine("\tSET WITHOUT OIDS;");
}
else if ("OIDS".EqualsIgnoreCase(newTable.With) || "OIDS=true".EqualsIgnoreCase(newTable.With))
{
writer.WriteLine("\tSET WITH OIDS;");
}
else
{
writer.WriteLine("\tSET " + newTable.With + ";");
}
}
public static void AlterComments(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (var oldFun in oldSchema.GetFunctions())
{
var newFunction = newSchema.GetFunction(oldFun.GetSignature());
if (newFunction == null)
{
continue;
}
if (oldFun.Comment == null &&
newFunction.Comment != null ||
oldFun.Comment != null &&
newFunction.Comment != null &&
!oldFun.Comment.Equals(
newFunction.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON FUNCTION ");
writer.Write(PgDiffUtils.GetQuotedName(newFunction.Name));
writer.Write('(');
var addComma = false;
foreach (var argument in newFunction.GetArguments())
{
if (addComma)
{
writer.Write(", ");
}
else
{
addComma = true;
}
writer.Write(argument.GetDeclaration(false));
}
writer.Write(") IS ");
writer.Write(newFunction.Comment);
writer.WriteLine(';');
}
else if (oldFun.Comment != null && newFunction.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON FUNCTION ");
writer.Write(PgDiffUtils.GetQuotedName(newFunction.Name));
writer.Write('(');
var addComma = false;
foreach (var argument in newFunction.GetArguments())
{
if (addComma)
{
writer.Write(", ");
}
else
{
addComma = true;
}
writer.Write(argument.GetDeclaration(false));
}
writer.WriteLine(") IS NULL;");
}
}
}
public static void AlterViews(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (var oldView in oldSchema.GetViews())
{
var newView = newSchema.GetView(oldView.Name);
if (newView == null)
{
continue;
}
DiffDefaultValues(writer, oldView, newView, searchPathHelper);
if (oldView.Comment == null &&
newView.Comment != null ||
oldView.Comment != null &&
newView.Comment != null &&
!oldView.Comment.Equals(
newView.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON VIEW ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.Write(" IS ");
writer.Write(newView.Comment);
writer.WriteLine(';');
}
else if (oldView.Comment != null && newView.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON VIEW ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.WriteLine(" IS NULL;");
}
var columnNames = newView.ColumnComments.Select(c => c.ColumnName).ToList();
foreach (var columnComment in oldView.ColumnComments)
{
if (!columnNames.Contains(columnComment.ColumnName))
{
columnNames.Add(columnComment.ColumnName);
}
}
foreach (var columnName in columnNames)
{
var oldColumnComment = oldView.ColumnComments.FirstOrDefault(cc => columnName.Equals(cc.ColumnName));
var newColumnComment = newView.ColumnComments.FirstOrDefault(cc => columnName.Equals(cc.ColumnName));
if (oldColumnComment == null && newColumnComment != null ||
oldColumnComment != null && newColumnComment != null &&
!oldColumnComment.Comment.Equals(
newColumnComment.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.Write('.');
writer.Write(PgDiffUtils.GetQuotedName(newColumnComment.ColumnName));
writer.Write(" IS ");
writer.Write(newColumnComment.Comment);
writer.WriteLine(';');
}
else if (oldColumnComment != null &&
newColumnComment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.Write('.');
writer.Write(PgDiffUtils.GetQuotedName(oldColumnComment.ColumnName));
writer.WriteLine(" IS NULL;");
}
}
}
}
private static void DiffDefaultValues(TextWriter writer, PgView oldView, PgView newView, SearchPathHelper searchPathHelper)
{
var oldValues = oldView.DefaultValues;
var newValues = newView.DefaultValues;
// modify defaults that are in old view
foreach (var oldValue in oldValues)
{
var found = false;
foreach (var newValue in newValues)
{
if (oldValue.ColumnName.Equals(newValue.ColumnName))
{
found = true;
if (!oldValue._DefaultValue.Equals(newValue._DefaultValue))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.Write(" ALTER COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newValue.ColumnName));
writer.Write(" SET DEFAULT ");
writer.Write(newValue._DefaultValue);
writer.WriteLine(';');
}
break;
}
}
if (!found)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.Write(" ALTER COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(oldValue.ColumnName));
writer.WriteLine(" DROP DEFAULT;");
}
}
// add new defaults
foreach (var newValue in newValues)
{
var found = oldValues.Any(ov => newValue.ColumnName.Equals(ov.ColumnName));
if (found)
{
continue;
}
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER TABLE ");
writer.Write(PgDiffUtils.GetQuotedName(newView.Name));
writer.Write(" ALTER COLUMN ");
writer.Write(PgDiffUtils.GetQuotedName(newValue.ColumnName));
writer.Write(" SET DEFAULT ");
writer.Write(newValue._DefaultValue);
writer.WriteLine(';');
}
}
public static void AlterSequences(TextWriter writer, PgDiffArguments arguments,
PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
var sbSql = new StringBuilder(100);
foreach (var newSequence in newSchema.GetSequences())
{
var oldSequence = oldSchema.GetSequence(newSequence.Name);
if (oldSequence == null)
{
continue;
}
sbSql.Length = 0;
var oldIncrement = oldSequence.Increment;
var newIncrement = newSequence.Increment;
if (newIncrement != null && !newIncrement.Equals(oldIncrement))
{
sbSql.Append("\n\tINCREMENT BY ");
sbSql.Append(newIncrement);
}
var oldMinValue = oldSequence.MinValue;
var newMinValue = newSequence.MinValue;
if (newMinValue == null && oldMinValue != null)
{
sbSql.Append("\n\tNO MINVALUE");
}
else if (newMinValue != null && !newMinValue.Equals(oldMinValue))
{
sbSql.Append("\n\tMINVALUE ");
sbSql.Append(newMinValue);
}
var oldMaxValue = oldSequence.MaxValue;
var newMaxValue = newSequence.MaxValue;
if (newMaxValue == null && oldMaxValue != null)
{
sbSql.Append("\n\tNO MAXVALUE");
}
else if (newMaxValue != null &&
!newMaxValue.Equals(oldMaxValue))
{
sbSql.Append("\n\tMAXVALUE ");
sbSql.Append(newMaxValue);
}
if (!arguments.IgnoreStartWith)
{
var oldStart = oldSequence.StartWith;
var newStart = newSequence.StartWith;
if (newStart != null && !newStart.Equals(oldStart))
{
sbSql.Append("\n\tRESTART WITH ");
sbSql.Append(newStart);
}
}
var oldCache = oldSequence.Cache;
var newCache = newSequence.Cache;
if (newCache != null && !newCache.Equals(oldCache))
{
sbSql.Append("\n\tCACHE ");
sbSql.Append(newCache);
}
var oldCycle = oldSequence.Cycle;
var newCycle = newSequence.Cycle;
if (oldCycle && !newCycle)
{
sbSql.Append("\n\tNO CYCLE");
}
else if (!oldCycle && newCycle)
{
sbSql.Append("\n\tCYCLE");
}
var oldOwnedBy = oldSequence.OwnedBy;
var newOwnedBy = newSequence.OwnedBy;
if (newOwnedBy != null && !newOwnedBy.Equals(oldOwnedBy))
{
sbSql.Append("\n\tOWNED BY ");
sbSql.Append(newOwnedBy);
}
if (sbSql.Length > 0)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("ALTER SEQUENCE "
+ PgDiffUtils.GetQuotedName(newSequence.Name));
writer.Write(sbSql.ToString());
writer.WriteLine(';');
}
if (oldSequence.Comment == null &&
newSequence.Comment != null ||
oldSequence.Comment != null &&
newSequence.Comment != null &&
!oldSequence.Comment.Equals(
newSequence.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON SEQUENCE ");
writer.Write(PgDiffUtils.GetQuotedName(newSequence.Name));
writer.Write(" IS ");
writer.Write(newSequence.Comment);
writer.WriteLine(';');
}
else if (oldSequence.Comment != null && newSequence.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON SEQUENCE ");
writer.Write(newSequence.Name);
writer.WriteLine(" IS NULL;");
}
}
}
private static void UpdateSchemas(TextWriter writer, PgDiffArguments arguments, PgDatabase oldDatabase, PgDatabase newDatabase)
{
var setSearchPath = newDatabase.Schemas.Count > 1 ||
!newDatabase.Schemas[0].Name.Equals("public");
foreach (var newSchema in newDatabase.Schemas)
{
var searchPathHelper = setSearchPath
? new SearchPathHelper($"SET search_path = {PgDiffUtils.GetQuotedName(newSchema.Name, true)}, pg_catalog;")
: new SearchPathHelper(null);
var oldSchema = oldDatabase.GetSchema(newSchema.Name);
if (oldSchema != null)
{
if (oldSchema.Comment == null &&
newSchema.Comment != null ||
oldSchema.Comment != null &&
newSchema.Comment != null &&
!oldSchema.Comment.Equals(
newSchema.Comment))
{
writer.WriteLine();
writer.Write("COMMENT ON SCHEMA ");
writer.Write(PgDiffUtils.GetQuotedName(newSchema.Name));
writer.Write(" IS ");
writer.Write(newSchema.Comment);
writer.WriteLine(';');
}
else if (oldSchema.Comment != null && newSchema.Comment == null)
{
writer.WriteLine();
writer.Write("COMMENT ON SCHEMA ");
writer.Write(PgDiffUtils.GetQuotedName(newSchema.Name));
writer.WriteLine(" IS NULL;");
}
}
PgDiffTriggers.DropTriggers(writer, oldSchema, newSchema, searchPathHelper);
PgDiffFunctions.DropFunctions(writer, arguments, oldSchema, newSchema, searchPathHelper);
PgDiffViews.DropViews(writer, oldSchema, newSchema, searchPathHelper);
PgDiffConstraints.DropConstraints(writer, oldSchema, newSchema, true, searchPathHelper);
PgDiffConstraints.DropConstraints(writer, oldSchema, newSchema, false, searchPathHelper);
PgDiffIndexes.DropIndexes(writer, oldSchema, newSchema, searchPathHelper);
PgDiffTables.DropClusters(writer, oldSchema, newSchema, searchPathHelper);
PgDiffTables.DropTables(writer, oldSchema, newSchema, searchPathHelper);
PgDiffSequences.DropSequences(writer, oldSchema, newSchema, searchPathHelper);
PgDiffSequences.CreateSequences(writer, oldSchema, newSchema, searchPathHelper);
PgDiffSequences.AlterSequences(writer, arguments, oldSchema, newSchema, searchPathHelper);
PgDiffTables.CreateTables(writer, oldSchema, newSchema, searchPathHelper);
PgDiffTables.AlterTables(writer, arguments, oldSchema, newSchema, searchPathHelper);
PgDiffSequences.AlterCreatedSequences(writer, oldSchema, newSchema, searchPathHelper);
PgDiffFunctions.CreateFunctions(writer, arguments, oldSchema, newSchema, searchPathHelper);
PgDiffConstraints.CreateConstraints(writer, oldSchema, newSchema, true, searchPathHelper);
PgDiffConstraints.CreateConstraints(writer, oldSchema, newSchema, false, searchPathHelper);
PgDiffIndexes.CreateIndexes(writer, oldSchema, newSchema, searchPathHelper);
PgDiffTables.CreateClusters(writer, oldSchema, newSchema, searchPathHelper);
PgDiffTriggers.CreateTriggers(writer, oldSchema, newSchema, searchPathHelper);
PgDiffViews.CreateViews(writer, oldSchema, newSchema, searchPathHelper);
PgDiffViews.AlterViews(writer, oldSchema, newSchema, searchPathHelper);
PgDiffFunctions.AlterComments(writer, oldSchema, newSchema, searchPathHelper);
PgDiffConstraints.AlterComments(writer, oldSchema, newSchema, searchPathHelper);
PgDiffIndexes.AlterComments(writer, oldSchema, newSchema, searchPathHelper);
PgDiffTriggers.AlterComments(writer, oldSchema, newSchema, searchPathHelper);
}
}
public static void AlterComments(TextWriter writer, PgSchema oldSchema, PgSchema newSchema, SearchPathHelper searchPathHelper)
{
if (oldSchema == null)
{
return;
}
foreach (var oldTable in oldSchema.GetTables())
{
var newTable = newSchema.GetTable(oldTable.Name);
if (newTable == null)
{
continue;
}
foreach (var oldConstraint in oldTable.Constraints)
{
var newConstraint =
newTable.GetConstraint(oldConstraint.Name);
if (newConstraint == null)
{
continue;
}
if (oldConstraint.Comment == null &&
newConstraint.Comment != null ||
oldConstraint.Comment != null &&
newConstraint.Comment != null &&
!oldConstraint.Comment.Equals(
newConstraint.Comment))
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON ");
if (newConstraint.IsPrimaryKeyConstraint())
{
writer.Write("INDEX ");
writer.Write(PgDiffUtils.GetQuotedName(newConstraint.Name));
}
else
{
writer.Write("CONSTRAINT ");
writer.Write(PgDiffUtils.GetQuotedName(newConstraint.Name));
writer.Write(" ON ");
writer.Write(PgDiffUtils.GetQuotedName(newConstraint.TableName));
}
writer.Write(" IS ");
writer.Write(newConstraint.Comment);
writer.WriteLine(';');
}
else if (oldConstraint.Comment != null && newConstraint.Comment == null)
{
searchPathHelper.OutputSearchPath(writer);
writer.WriteLine();
writer.Write("COMMENT ON ");
if (newConstraint.IsPrimaryKeyConstraint())
{
writer.Write("INDEX ");
writer.Write(PgDiffUtils.GetQuotedName(newConstraint.Name));
}
else
{
writer.Write("CONSTRAINT ");
writer.Write(PgDiffUtils.GetQuotedName(newConstraint.Name));
writer.Write(" ON ");
writer.Write(PgDiffUtils.GetQuotedName(newConstraint.TableName));
}
writer.WriteLine(" IS NULL;");
}
}
}
}