public SchemaDiff(SchemaObjects existing, DocumentMapping mapping, DdlRules rules)
{
if (existing.HasNone())
{
AllMissing = true;
}
else
{
var expectedTable = mapping.SchemaObjects.As<DocumentSchemaObjects>().StorageTable();
TableDiff = new TableDiff(expectedTable, existing.Table);
// TODO -- drop obsolete indices?
mapping.Indexes.Each(index =>
{
if (existing.ActualIndices.ContainsKey(index.IndexName))
{
var actualIndex = existing.ActualIndices[index.IndexName];
if (!index.Matches(actualIndex))
{
IndexChanges.Add($"drop index {expectedTable.Table.Schema}.{index.IndexName};{Environment.NewLine}{index.ToDDL()};");
IndexRollbacks.Add($"drop index {expectedTable.Table.Schema}.{index.IndexName};{Environment.NewLine}{actualIndex.DDL};");
}
}
else
{
IndexChanges.Add(index.ToDDL());
IndexRollbacks.Add($"drop index concurrently if exists {expectedTable.Table.Schema}.{index.IndexName};");
}
});
existing.ActualIndices.Values.Where(x => mapping.Indexes.All(_ => _.IndexName != x.Name)).Each(
index =>
{
IndexRollbacks.Add(index.DDL);
IndexChanges.Add($"drop index concurrently if exists {mapping.Table.Schema}.{index.Name};");
});
var expectedFunction = new UpsertFunction(mapping);
FunctionDiff = new FunctionDiff(expectedFunction.ToBody(rules), existing.Function);
var missingFKs = mapping.ForeignKeys.Where(x => !existing.ForeignKeys.Contains(x.KeyName));
MissingForeignKeys.AddRange(missingFKs);
}
_mapping = mapping;
}
public void WriteSchemaObjects(IDocumentSchema schema, StringWriter writer)
{
var table = StorageTable();
var rules = schema.StoreOptions.DdlRules;
table.Write(rules, writer);
writer.WriteLine();
writer.WriteLine();
var function = new UpsertFunction(_mapping);
function.WriteFunctionSql(rules, writer);
_mapping.ForeignKeys.Each(x =>
{
writer.WriteLine();
writer.WriteLine((string)x.ToDDL());
});
_mapping.Indexes.Each(x =>
{
writer.WriteLine();
writer.WriteLine(x.ToDDL());
});
DependentScripts.Each(script =>
{
writer.WriteLine();
writer.WriteLine();
writer.WriteSql(_mapping.DatabaseSchemaName, script);
});
writer.WriteLine();
writer.WriteLine();
var template = _mapping.DdlTemplate.IsNotEmpty()
? rules.Templates[_mapping.DdlTemplate.ToLower()]
: rules.Templates["default"];
table.WriteTemplate(template, writer);
var body = function.ToBody(rules);
body.WriteTemplate(template, writer);
writer.WriteLine();
writer.WriteLine();
}
public SchemaDiff(SchemaObjects existing, DocumentMapping mapping, DdlRules rules)
{
if (existing.HasNone())
{
AllMissing = true;
}
else
{
var expectedTable = mapping.SchemaObjects.As <DocumentSchemaObjects>().StorageTable();
TableDiff = new TableDiff(expectedTable, existing.Table);
// TODO -- drop obsolete indices?
mapping.Indexes.Each(index =>
{
if (existing.ActualIndices.ContainsKey(index.IndexName))
{
var actualIndex = existing.ActualIndices[index.IndexName];
if (!index.Matches(actualIndex))
{
IndexChanges.Add($"drop index {expectedTable.Table.Schema}.{index.IndexName};{Environment.NewLine}{index.ToDDL()};");
IndexRollbacks.Add($"drop index {expectedTable.Table.Schema}.{index.IndexName};{Environment.NewLine}{actualIndex.DDL};");
}
}
else
{
IndexChanges.Add(index.ToDDL());
IndexRollbacks.Add($"drop index concurrently if exists {expectedTable.Table.Schema}.{index.IndexName};");
}
});
existing.ActualIndices.Values.Where(x => mapping.Indexes.All(_ => _.IndexName != x.Name)).Each(
index =>
{
IndexRollbacks.Add(index.DDL);
IndexChanges.Add($"drop index concurrently if exists {mapping.Table.Schema}.{index.Name};");
});
var expectedFunction = new UpsertFunction(mapping);
FunctionDiff = new FunctionDiff(expectedFunction.ToBody(rules), existing.Function);
var missingFKs = mapping.ForeignKeys.Where(x => !existing.ForeignKeys.Contains(x.KeyName));
MissingForeignKeys.AddRange(missingFKs);
}
_mapping = mapping;
}
public void WriteSchemaObjects(IDocumentSchema schema, StringWriter writer)
{
var table = StorageTable();
table.Write(writer);
writer.WriteLine();
writer.WriteLine();
var function = new UpsertFunction(_mapping);
function.WriteFunctionSql(writer);
_mapping.ForeignKeys.Each(x =>
{
writer.WriteLine();
writer.WriteLine((string)x.ToDDL());
});
_mapping.Indexes.Each(x =>
{
writer.WriteLine();
writer.WriteLine(x.ToDDL());
});
DependentScripts.Each(script =>
{
writer.WriteLine();
writer.WriteLine();
writer.WriteSql(_mapping.DatabaseSchemaName, script);
});
var ownerName = schema.StoreOptions.OwnerName;
if (ownerName.IsNotEmpty())
{
writer.WriteLine($"ALTER TABLE {_mapping.Table} OWNER TO \"{ownerName}\";");
var functionBody = function.ToBody();
writer.WriteLine(functionBody.ToOwnershipCommand(ownerName));
}
writer.WriteLine();
writer.WriteLine();
}