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x2xmldatabinding/Units/XMLDataBindingGenerator.pas
Mark van Renswoude 0d63424104 Fixed: elements which are part of a choice compositor are treated as being optional
Fixed: xs:string properties use IXMLNode.Text property instead of NodeValue
Changed: GUI uses DevEx components
2008-04-21 13:04:19 +00:00

1640 lines
49 KiB
ObjectPascal

unit XMLDataBindingGenerator;
interface
uses
Classes,
Contnrs,
XMLSchema;
type
TXMLDataBindingSchema = class;
TXMLDataBindingGeneratorItem = class;
TXMLDataBindingItem = class;
TXMLDataBindingInterface = class;
TXMLDataBindingEnumerationMember = class;
TXMLDataBindingEnumeration = class;
TXMLDataBindingProperty = class;
TXMLDataBindingUnresolvedItem = class;
TXMLDataBindingOutputType = (otSingle, otMultiple);
TXMLDataBindingItemType = (itInterface, itEnumeration, itEnumerationMember,
itProperty, itUnresolved,
itComplexTypeAlias, itSimpleTypeAlias);
TXMLDataBindingInterfaceType = (ifElement, ifComplexType);
TXMLDataBindingPropertyType = (ptSimple, ptItem);
TXMLDataBindingOccurance = (boMinOccurs, boMaxOccurs);
TXMLDataBindingIterateItemsProc = procedure(AItem: TXMLDataBindingItem; AData: Pointer; var AAbort: Boolean) of object;
TXMLDataBindingGenerator = class(TObject)
private
FIncludePaths: TStrings;
FOutputPath: String;
FOutputType: TXMLDataBindingOutputType;
FSourceFileName: String;
FSchemas: TObjectList;
function GetSchemaCount(): Integer;
function GetSchemas(Index: Integer): TXMLDataBindingSchema;
protected
function LoadSchema(const AStream: TStream; const ASchemaName: String): TXMLDataBindingSchema;
function GetSchemaData(const ALocation: String; out ASourceFileName: String): TStream;
function FindSchema(const ALocation: String): TXMLDataBindingSchema;
procedure GenerateSchemaObjects(ASchema: TXMLDataBindingSchema; ARootDocument: Boolean);
procedure GenerateElementObjects(ASchema: TXMLDataBindingSchema; ARootDocument: Boolean);
procedure GenerateComplexTypeObjects(ASchema: TXMLDataBindingSchema);
function CheckElementOccurance(AElement: IXMLElementDef; AOccurance: TXMLDataBindingOccurance): Boolean;
function IsElementOptional(AElement: IXMLElementDef): Boolean;
function IsElementRepeating(AElement: IXMLElementDef): Boolean;
function IsChoice(AElement: IXMLElementDef): Boolean;
function ProcessElement(ASchema: TXMLDataBindingSchema; AElement: IXMLElementDef): TXMLDataBindingItem;
procedure ProcessChildElement(ASchema: TXMLDataBindingSchema; AElement: IXMLElementDef; AInterface: TXMLDataBindingInterface);
procedure ProcessAttribute(ASchema: TXMLDataBindingSchema; AAttribute: IXMLAttributeDef; AInterface: TXMLDataBindingInterface);
function IterateSchemaItems(ASchema: TXMLDataBindingSchema; AIterateProc: TXMLDataBindingIterateItemsProc; AData: Pointer): TXMLDataBindingItem;
procedure FindInterfaceProc(AItem: TXMLDataBindingItem; AData: Pointer; var AAbort: Boolean);
function FindInterface(ASchema: TXMLDataBindingSchema; const AName: String; AType: TXMLDataBindingInterfaceType): TXMLDataBindingInterface;
procedure FindEnumerationProc(AItem: TXMLDataBindingItem; AData: Pointer; var AAbort: Boolean);
function FindEnumeration(ASchema: TXMLDataBindingSchema; const AName: String): TXMLDataBindingEnumeration;
procedure ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
procedure ResolveSchema(ASchema: TXMLDataBindingSchema);
procedure ResolveAlias(ASchema: TXMLDataBindingSchema);
procedure ResolveItem(ASchema: TXMLDataBindingSchema; AItem: TXMLDataBindingUnresolvedItem);
procedure ResolveNameConflicts();
procedure PostProcessSchema(ASchema: TXMLDataBindingSchema);
procedure PostProcessItem(ASchema: TXMLDataBindingSchema; AItem: TXMLDataBindingItem);
function TranslateItemName(AItem: TXMLDataBindingItem): String; virtual;
procedure GenerateDataBinding(); virtual; abstract;
property SourceFileName: String read FSourceFileName write FSourceFileName;
property SchemaCount: Integer read GetSchemaCount;
property Schemas[Index: Integer]: TXMLDataBindingSchema read GetSchemas;
public
constructor Create();
destructor Destroy(); override;
procedure Execute(const AStream: TStream; const ASchemaName: String); overload;
procedure Execute(const AFileName: String); overload;
property IncludePaths: TStrings read FIncludePaths;
property OutputType: TXMLDataBindingOutputType read FOutputType write FOutputType;
property OutputPath: String read FOutputPath write FOutputPath;
end;
TXMLDataBindingGeneratorItem = class(TObject)
private
FOwner: TXMLDataBindingGenerator;
protected
procedure ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem); virtual;
property Owner: TXMLDataBindingGenerator read FOwner;
public
constructor Create(AOwner: TXMLDataBindingGenerator);
end;
TXMLDataBindingSchema = class(TXMLDataBindingGeneratorItem)
private
FIncludes: TObjectList;
FItems: TObjectList;
FItemsGenerated: Boolean;
FSchemaDef: IXMLSchemaDef;
FSchemaName: String;
FSourceFileName: String;
function GetItemCount(): Integer;
function GetItems(Index: Integer): TXMLDataBindingItem;
function GetIncludeCount(): Integer;
function GetIncludes(Index: Integer): TXMLDataBindingSchema;
protected
procedure ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem); override;
procedure AddInclude(ASchema: TXMLDataBindingSchema);
procedure AddItem(AItem: TXMLDataBindingItem);
procedure InsertItem(AItem, AAfter: TXMLDataBindingItem);
property ItemsGenerated: Boolean read FItemsGenerated write FItemsGenerated;
public
constructor Create(AOwner: TXMLDataBindingGenerator);
destructor Destroy(); override;
property IncludeCount: Integer read GetIncludeCount;
property Includes[Index: Integer]: TXMLDataBindingSchema read GetIncludes;
property SchemaDef: IXMLSchemaDef read FSchemaDef write FSchemaDef;
property SchemaName: String read FSchemaName write FSchemaName;
property SourceFileName: String read FSourceFileName write FSourceFileName;
property ItemCount: Integer read GetItemCount;
property Items[Index: Integer]: TXMLDataBindingItem read GetItems;
end;
TXMLDataBindingItem = class(TXMLDataBindingGeneratorItem)
private
FCollectionItem: TXMLDataBindingProperty;
FDocumentElement: Boolean;
FName: String;
FSchema: TXMLDataBindingSchema;
FSchemaItem: IXMLSchemaItem;
FTranslatedName: String;
function GetDocumentation(): String;
function GetHasDocumentation(): Boolean;
function GetIsCollection: Boolean;
protected
function GetItemType(): TXMLDataBindingItemType; virtual; abstract;
procedure SetName(const Value: String);
procedure SetTranslatedName(const Value: string);
property SchemaItem: IXMLSchemaItem read FSchemaItem;
public
constructor Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String);
property Schema: TXMLDataBindingSchema read FSchema write FSchema;
property DocumentElement: Boolean read FDocumentElement write FDocumentElement;
property Documentation: String read GetDocumentation;
property HasDocumentation: Boolean read GetHasDocumentation;
property ItemType: TXMLDataBindingItemType read GetItemType;
property Name: String read FName;
property TranslatedName: String read FTranslatedName;
property CollectionItem: TXMLDataBindingProperty read FCollectionItem write FCollectionItem;
property IsCollection: Boolean read GetIsCollection;
end;
TXMLDataBindingInterface = class(TXMLDataBindingItem)
private
FInterfaceType: TXMLDataBindingInterfaceType;
FProperties: TObjectList;
FBaseName: String;
FBaseItem: TXMLDataBindingInterface;
function GetProperties(Index: Integer): TXMLDataBindingProperty;
function GetPropertyCount: Integer;
protected
function GetItemType(): TXMLDataBindingItemType; override;
procedure ReplaceItem(const AOldItem: TXMLDataBindingItem; const ANewItem: TXMLDataBindingItem); override;
procedure AddProperty(AProperty: TXMLDataBindingProperty);
public
constructor Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String);
destructor Destroy; override;
property BaseName: String read FBaseName write FBaseName;
property BaseItem: TXMLDataBindingInterface read FBaseItem write FBaseItem;
property InterfaceType: TXMLDataBindingInterfaceType read FInterfaceType;
property PropertyCount: Integer read GetPropertyCount;
property Properties[Index: Integer]: TXMLDataBindingProperty read GetProperties;
end;
TXMLDataBindingEnumerationMember = class(TXMLDataBindingItem)
private
FEnumeration: TXMLDataBindingEnumeration;
protected
function GetItemType(): TXMLDataBindingItemType; override;
public
constructor Create(AOwner: TXMLDataBindingGenerator; AEnumeration: TXMLDataBindingEnumeration; const AName: String);
property Enumeration: TXMLDataBindingEnumeration read FEnumeration;
end;
TXMLDataBindingEnumeration = class(TXMLDataBindingItem)
private
FDataType: IXMLTypeDef;
FMembers: TObjectList;
function GetMemberCount(): Integer;
function GetMembers(Index: Integer): TXMLDataBindingEnumerationMember;
protected
function GetItemType(): TXMLDataBindingItemType; override;
public
constructor Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; ADataType: IXMLTypeDef; const AName: String);
destructor Destroy(); override;
property DataType: IXMLTypeDef read FDataType;
property MemberCount: Integer read GetMemberCount;
property Members[Index: Integer]: TXMLDataBindingEnumerationMember read GetMembers;
end;
TXMLDataBindingProperty = class(TXMLDataBindingItem)
private
FIsAttribute: Boolean;
FIsOptional: Boolean;
FIsRepeating: Boolean;
FCollection: TXMLDataBindingInterface;
protected
function GetIsReadOnly(): Boolean; virtual; abstract;
function GetItemType(): TXMLDataBindingItemType; override;
function GetPropertyType(): TXMLDataBindingPropertyType; virtual; abstract;
public
property IsAttribute: Boolean read FIsAttribute write FIsAttribute;
property IsOptional: Boolean read FIsOptional write FIsOptional;
property IsReadOnly: Boolean read GetIsReadOnly;
property IsRepeating: Boolean read FIsRepeating write FIsRepeating;
property PropertyType: TXMLDataBindingPropertyType read GetPropertyType;
property Collection: TXMLDataBindingInterface read FCollection write FCollection;
end;
TXMLDataBindingSimpleProperty = class(TXMLDataBindingProperty)
private
FDataType: IXMLTypeDef;
protected
function GetIsReadOnly(): Boolean; override;
function GetPropertyType(): TXMLDataBindingPropertyType; override;
public
constructor Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String; ADataType: IXMLTypeDef);
property DataType: IXMLTypeDef read FDataType;
end;
TXMLDataBindingItemProperty = class(TXMLDataBindingProperty)
private
FItem: TXMLDataBindingItem;
protected
function GetIsReadOnly(): Boolean; override;
function GetPropertyType(): TXMLDataBindingPropertyType; override;
procedure ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem); override;
public
constructor Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String; AItem: TXMLDataBindingItem);
property Item: TXMLDataBindingItem read FItem;
end;
TXMLDataBindingUnresolvedItem = class(TXMLDataBindingItem)
private
FInterfaceType: TXMLDataBindingInterfaceType;
protected
function GetItemType(): TXMLDataBindingItemType; override;
public
constructor Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String; AInterfaceType: TXMLDataBindingInterfaceType);
property InterfaceType: TXMLDataBindingInterfaceType read FInterfaceType;
end;
TXMLDataBindingComplexTypeAliasItem = class(TXMLDataBindingItem)
private
FItem: TXMLDataBindingItem;
protected
function GetItemType(): TXMLDataBindingItemType; override;
procedure ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem); override;
public
property Item: TXMLDataBindingItem read FItem write FItem;
end;
TXMLDataBindingSimpleTypeAliasItem = class(TXMLDataBindingItem)
private
FDataType: IXMLTypeDef;
protected
function GetItemType(): TXMLDataBindingItemType; override;
public
property DataType: IXMLTypeDef read FDataType write FDataType;
end;
implementation
uses
SysUtils,
Windows,
XMLDoc,
XMLIntf,
XMLSchemaTags,
X2UtHashes;
const
MaxOccursUnbounded = 'unbounded';
UseOptional = 'optional';
CollectionPostfix = 'List';
function GetInterfaceType(ASchemaItem: IXMLSchemaItem): TXMLDataBindingInterfaceType;
begin
if Supports(ASchemaItem, IXMLComplexTypeDef) then
Result := ifComplexType
else
Result := ifElement;
end;
{ TXMLDataBindingGenerator }
constructor TXMLDataBindingGenerator.Create();
begin
inherited Create();
FIncludePaths := TStringList.Create();
FSchemas := TObjectList.Create(True);
with TStringList(FIncludePaths) do
begin
CaseSensitive := False;
Duplicates := dupIgnore;
end;
end;
destructor TXMLDataBindingGenerator.Destroy();
begin
FreeAndNil(FSchemas);
FreeAndNil(FIncludePaths);
inherited;
end;
procedure TXMLDataBindingGenerator.Execute(const AStream: TStream; const ASchemaName: String);
var
schemaIndex: Integer;
schema: TXMLDataBindingSchema;
begin
FSchemas.Clear();
schema := LoadSchema(AStream, ASchemaName);
if Assigned(schema) then
schema.SourceFileName := SourceFileName;
if SchemaCount > 0 then
begin
{ Map schema elements to objects }
for schemaIndex := 0 to Pred(SchemaCount) do
GenerateSchemaObjects(Schemas[schemaIndex], (schemaIndex = 0));
{ Process unresolved references }
for schemaIndex := Pred(SchemaCount) downto 0 do
ResolveSchema(Schemas[schemaIndex]);
{ After all lookups have been done, unwrap alias items }
for schemaIndex := Pred(SchemaCount) downto 0 do
ResolveAlias(Schemas[schemaIndex]);
{ Resolve naming conflicts }
ResolveNameConflicts();
{ Perform final post-processing (translating names, generating collections) }
for schemaIndex := 0 to Pred(SchemaCount) do
PostProcessSchema(Schemas[schemaIndex]);
{ Output }
GenerateDataBinding();
end;
end;
procedure TXMLDataBindingGenerator.Execute(const AFileName: String);
var
currentDir: String;
fileStream: TFileStream;
begin
currentDir := GetCurrentDir();
try
ChDir(ExtractFilePath(AFileName));
fileStream := TFileStream.Create(AFileName, fmOpenRead or fmShareDenyNone);
try
FSourceFileName := AFileName;
IncludePaths.Add(ExtractFilePath(AFileName));
Execute(fileStream, ChangeFileExt(ExtractFileName(AFileName), ''));
finally
FreeAndNil(fileStream);
end;
finally
ChDir(currentDir);
end;
end;
function TXMLDataBindingGenerator.LoadSchema(const AStream: TStream; const ASchemaName: String): TXMLDataBindingSchema;
procedure HandleDocRefs(const ADocRefs: IXMLSchemaDocRefs; ASchema: TXMLDataBindingSchema);
var
location: String;
schemaName: String;
refSchema: TXMLDataBindingSchema;
refIndex: Integer;
refStream: TStream;
sourceFileName: String;
begin
for refIndex := 0 to Pred(ADocRefs.Count) do
begin
location := ADocRefs[refIndex].SchemaLocation;
schemaName := ChangeFileExt(ExtractFileName(location), '');
refSchema := FindSchema(schemaName);
if not Assigned(refSchema) then
begin
refStream := GetSchemaData(location, sourceFileName);
if Assigned(refStream) then
try
refSchema := LoadSchema(refStream, schemaName);
if Assigned(refSchema) then
refSchema.SourceFileName := sourceFileName;
finally
FreeAndNil(refStream);
end;
end;
if Assigned(refSchema) then
ASchema.AddInclude(refSchema);
end;
end;
var
schemaDoc: IXMLSchemaDoc;
schemaDef: IXMLSchemaDef;
begin
schemaDoc := TXMLSchemaDoc.Create(nil);
schemaDoc.LoadFromStream(AStream);
schemaDef := schemaDoc.SchemaDef;
Result := TXMLDataBindingSchema.Create(Self);
Result.SchemaDef := schemaDef;
Result.SchemaName := ASchemaName;
FSchemas.Add(Result);
{ Handle imports / includes }
HandleDocRefs(schemaDef.SchemaImports, Result);
HandleDocRefs(schemaDef.SchemaIncludes, Result);
end;
function TXMLDataBindingGenerator.GetSchemaData(const ALocation: String; out ASourceFileName: String): TStream;
var
includeIndex: Integer;
includePath: String;
begin
Result := nil;
// #ToDo3 (MvR) 31-1-2007: support more locations than just a filename ?
for includeIndex := 0 to Pred(IncludePaths.Count) do
begin
includePath := IncludeTrailingPathDelimiter(IncludePaths[includeIndex]);
if FileExists(includePath + ALocation) then
begin
ASourceFileName := includePath + ALocation;
Result := TFileStream.Create(ASourceFileName, fmOpenRead or fmShareDenyNone);
break;
end;
end;
end;
function TXMLDataBindingGenerator.FindSchema(const ALocation: String): TXMLDataBindingSchema;
var
schemaIndex: Integer;
begin
Result := nil;
for schemaIndex := 0 to Pred(SchemaCount) do
if Schemas[schemaIndex].SchemaName = ALocation then
begin
Result := Schemas[schemaIndex];
break;
end;
end;
procedure TXMLDataBindingGenerator.GenerateSchemaObjects(ASchema: TXMLDataBindingSchema; ARootDocument: Boolean);
var
includeIndex: Integer;
begin
if ASchema.ItemsGenerated then
exit;
ASchema.ItemsGenerated := True;
{ First generate the objects for all includes and imports, so we can get
proper references. }
for includeIndex := 0 to Pred(ASchema.IncludeCount) do
GenerateSchemaObjects(ASchema.Includes[includeIndex], False);
GenerateElementObjects(ASchema, ARootDocument);
GenerateComplexTypeObjects(ASchema);
end;
procedure TXMLDataBindingGenerator.GenerateElementObjects(ASchema: TXMLDataBindingSchema; ARootDocument: Boolean);
var
schemaDef: IXMLSchemaDef;
elementIndex: Integer;
item: TXMLDataBindingItem;
begin
schemaDef := ASchema.SchemaDef;
for elementIndex := 0 to Pred(schemaDef.ElementDefs.Count) do
begin
item := ProcessElement(ASchema, schemaDef.ElementDefs[elementIndex]);
if Assigned(item) and ARootDocument then
item.DocumentElement := True;
end;
end;
procedure TXMLDataBindingGenerator.GenerateComplexTypeObjects(ASchema: TXMLDataBindingSchema);
var
schemaDef: IXMLSchemaDef;
complexTypeIndex: Integer;
complexType: IXMLComplexTypeDef;
interfaceItem: TXMLDataBindingInterface;
elementIndex: Integer;
begin
schemaDef := ASchema.SchemaDef;
for complexTypeIndex := 0 to Pred(schemaDef.ComplexTypes.Count) do
begin
complexType := schemaDef.ComplexTypes[complexTypeIndex];
interfaceItem := TXMLDataBindingInterface.Create(Self, complexType, complexType.Name);
if complexType.DerivationMethod <> dmNone then
interfaceItem.BaseName := complexType.BaseTypeName;
ASchema.AddItem(interfaceItem);
for elementIndex := 0 to Pred(complexType.ElementDefs.Count) do
ProcessChildElement(ASchema, complexType.ElementDefs[elementIndex], interfaceItem);
end;
end;
function TXMLDataBindingGenerator.CheckElementOccurance(AElement: IXMLElementDef; AOccurance: TXMLDataBindingOccurance): Boolean;
function CheckParent(const ANode: IXMLNode): Boolean;
var
compositor: IXMLElementCompositor;
begin
Result := False;
if Supports(ANode, IXMLElementCompositor, compositor) then
begin
case AOccurance of
boMinOccurs: Result := (compositor.MinOccurs = 0) or
(compositor.CompositorType = ctChoice);
boMaxOccurs: Result := (compositor.MaxOccurs = MaxOccursUnbounded) or
(compositor.MaxOccurs > 1);
end;
if not Result then
Result := CheckParent(compositor.ParentNode);
end;
end;
begin
Result := False;
case AOccurance of
boMinOccurs: Result := (AElement.MinOccurs = 0);
boMaxOccurs: Result := (AElement.MaxOccurs = MaxOccursUnbounded) or
(AElement.MaxOccurs > 1);
end;
if not Result then
Result := CheckParent(AElement.ParentNode);
end;
function TXMLDataBindingGenerator.IsElementOptional(AElement: IXMLElementDef): Boolean;
begin
Result := CheckElementOccurance(AElement, boMinOccurs);
end;
function TXMLDataBindingGenerator.IsElementRepeating(AElement: IXMLElementDef): Boolean;
begin
Result := CheckElementOccurance(AElement, boMaxOccurs);
end;
function TXMLDataBindingGenerator.IsChoice(AElement: IXMLElementDef): Boolean;
var
compositor: IXMLElementCompositor;
begin
Result := False;
if Supports(AElement, IXMLElementCompositor, compositor) then
Result := (compositor.CompositorType = ctChoice) and
(compositor.ElementDefs.Count > 1);
end;
function TXMLDataBindingGenerator.ProcessElement(ASchema: TXMLDataBindingSchema; AElement: IXMLElementDef): TXMLDataBindingItem;
var
elementIndex: Integer;
attributeIndex: Integer;
enumerationObject: TXMLDataBindingEnumeration;
interfaceObject: TXMLDataBindingInterface;
complexAliasItem: TXMLDataBindingComplexTypeAliasItem;
simpleAliasItem: TXMLDataBindingSimpleTypeAliasItem;
begin
Result := nil;
interfaceObject := nil;
if Assigned(AElement.Ref) then
begin
{ Find reference. If not found, mark as "resolve later". }
Result := FindInterface(ASchema, AElement.Ref.Name, ifElement);
if not Assigned(Result) then
begin
Result := TXMLDataBindingUnresolvedItem.Create(Self, AElement, AElement.Ref.Name, ifElement);
ASchema.AddItem(Result);
end;
end else
begin
if not AElement.DataType.IsAnonymous then
begin
if AElement.DataType.IsComplex then
begin
{ Find data type. If not found, mark as "resolve later". }
Result := FindInterface(ASchema, AElement.DataTypeName, ifComplexType);
if not Assigned(Result) then
begin
Result := TXMLDataBindingUnresolvedItem.Create(Self, AElement, AElement.DataTypeName, ifComplexType);
ASchema.AddItem(Result);
end;
if AElement.IsGlobal then
begin
{ The element is global, but only references a complex type. Keep track
to properly resolve references to the element. }
complexAliasItem := TXMLDataBindingComplexTypeAliasItem.Create(Self, AElement, AElement.Name);
complexAliasItem.Item := Result;
ASchema.AddItem(complexAliasItem);
end;
end else if AElement.IsGlobal then
begin
{ The element is global, but only references a simple type. }
simpleAliasItem := TXMLDataBindingSimpleTypeAliasItem.Create(Self, AElement, AElement.Name);
simpleAliasItem.DataType := AElement.DataType;
ASchema.AddItem(simpleAliasItem);
Result := simpleAliasItem;
end;
end;
if not Assigned(Result) then
begin
if AElement.DataType.Enumerations.Count > 0 then
begin
{ Enumeration }
enumerationObject := TXMLDataBindingEnumeration.Create(Self, AElement, AElement.DataType, AElement.Name);
ASchema.AddItem(enumerationObject);
Result := enumerationObject;
end else if AElement.DataType.IsComplex then
begin
{ Interface }
interfaceObject := TXMLDataBindingInterface.Create(Self, AElement, AElement.Name);
if Assigned(AElement.DataType.BaseType) then
interfaceObject.BaseName := AElement.DataType.BaseTypeName;
ASchema.AddItem(interfaceObject);
Result := interfaceObject;
end;
if Assigned(interfaceObject) then
begin
for elementIndex := 0 to Pred(AElement.ChildElements.Count) do
ProcessChildElement(ASchema, AElement.ChildElements[elementIndex], interfaceObject);
for attributeIndex := 0 to Pred(AElement.AttributeDefs.Count) do
ProcessAttribute(ASchema, AElement.AttributeDefs[attributeIndex], interfaceObject);
end;
end;
end;
end;
procedure TXMLDataBindingGenerator.ProcessChildElement(ASchema: TXMLDataBindingSchema; AElement: IXMLElementDef; AInterface: TXMLDataBindingInterface);
var
propertyType: TXMLDataBindingItem;
propertyItem: TXMLDataBindingProperty;
begin
propertyType := ProcessElement(ASchema, AElement);
if Assigned(AInterface) then
begin
if Assigned(propertyType) then
propertyItem := TXMLDataBindingItemProperty.Create(Self, AElement,
AElement.Name,
propertyType)
else
propertyItem := TXMLDataBindingSimpleProperty.Create(Self, AElement,
AElement.Name,
AElement.DataType);
propertyItem.IsOptional := IsElementOptional(AElement) or
IsChoice(AElement);
propertyItem.IsRepeating := IsElementRepeating(AElement);
AInterface.AddProperty(propertyItem);
end;
end;
procedure TXMLDataBindingGenerator.ProcessAttribute(ASchema: TXMLDataBindingSchema; AAttribute: IXMLAttributeDef; AInterface: TXMLDataBindingInterface);
var
propertyItem: TXMLDataBindingProperty;
begin
// #ToDo2 (MvR) 10-4-2008: complex attributes (enumerations)
propertyItem := TXMLDataBindingSimpleProperty.Create(Self, AAttribute,
AAttribute.Name,
AAttribute.DataType);
propertyItem.IsOptional := (AAttribute.Use = UseOptional);
propertyItem.IsAttribute := True;
AInterface.AddProperty(propertyItem);
end;
function TXMLDataBindingGenerator.IterateSchemaItems(ASchema: TXMLDataBindingSchema; AIterateProc: TXMLDataBindingIterateItemsProc; AData: Pointer): TXMLDataBindingItem;
var
abort: Boolean;
itemIndex: Integer;
schemaItem: TXMLDataBindingItem;
includeIndex: Integer;
begin
Result := nil;
abort := False;
for itemIndex := 0 to Pred(ASchema.ItemCount) do
begin
schemaItem := ASchema.Items[itemIndex];
AIterateProc(schemaItem, AData, abort);
if abort then
begin
Result := schemaItem;
Break;
end;
end;
if not Assigned(Result) then
begin
for includeIndex := 0 to Pred(ASchema.IncludeCount) do
begin
Result := IterateSchemaItems(ASchema.Includes[includeIndex], AIterateProc, AData);
if Assigned(Result) then
break;
end;
end;
end;
type
PFindInterfaceInfo = ^TFindInterfaceInfo;
TFindInterfaceInfo = record
InterfaceType: TXMLDataBindingInterfaceType;
Name: String;
end;
procedure TXMLDataBindingGenerator.FindInterfaceProc(AItem: TXMLDataBindingItem; AData: Pointer; var AAbort: Boolean);
var
findInfo: PFindInterfaceInfo;
begin
AAbort := False;
findInfo := PFindInterfaceInfo(AData);
if AItem.Name = findInfo^.Name then
begin
case AItem.ItemType of
itInterface:
AAbort := (TXMLDataBindingInterface(AItem).InterfaceType = findInfo^.InterfaceType);
itComplexTypeAlias,
itSimpleTypeAlias:
AAbort := (findInfo^.InterfaceType = ifElement);
end;
end;
end;
function TXMLDataBindingGenerator.FindInterface(ASchema: TXMLDataBindingSchema; const AName: String; AType: TXMLDataBindingInterfaceType): TXMLDataBindingInterface;
var
findInfo: TFindInterfaceInfo;
begin
findInfo.InterfaceType := AType;
findInfo.Name := AName;
Result := TXMLDataBindingInterface(IterateSchemaItems(ASchema, FindInterfaceProc, @findInfo));
end;
procedure TXMLDataBindingGenerator.FindEnumerationProc(AItem: TXMLDataBindingItem; AData: Pointer; var AAbort: Boolean);
begin
AAbort := (AItem.ItemType = itEnumeration) and
(AItem.Name = PChar(AData));
end;
function TXMLDataBindingGenerator.FindEnumeration(ASchema: TXMLDataBindingSchema; const AName: String): TXMLDataBindingEnumeration;
begin
Result := TXMLDataBindingEnumeration(IterateSchemaItems(ASchema, FindEnumerationProc, PChar(AName)));
end;
procedure TXMLDataBindingGenerator.ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
var
schemaIndex: Integer;
begin
for schemaIndex := Pred(SchemaCount) downto 0 do
Schemas[schemaIndex].ReplaceItem(AOldItem, ANewItem);
end;
procedure TXMLDataBindingGenerator.ResolveSchema(ASchema: TXMLDataBindingSchema);
var
itemIndex: Integer;
item: TXMLDataBindingItem;
interfaceItem: TXMLDataBindingInterface;
begin
for itemIndex := Pred(ASchema.ItemCount) downto 0 do
begin
item := ASchema.Items[itemIndex];
case item.ItemType of
itInterface:
begin
{ Resolve base interface }
interfaceItem := TXMLDataBindingInterface(item);
if (not Assigned(interfaceItem.BaseItem)) and
(Length(interfaceItem.BaseName) > 0) then
interfaceItem.BaseItem := FindInterface(ASchema, interfaceItem.BaseName, ifComplexType);
end;
itUnresolved:
ResolveItem(ASchema, TXMLDataBindingUnresolvedItem(item));
end;
end;
end;
procedure TXMLDataBindingGenerator.ResolveAlias(ASchema: TXMLDataBindingSchema);
var
itemIndex: Integer;
item: TXMLDataBindingItem;
complexAliasItem: TXMLDataBindingComplexTypeAliasItem;
simpleAliasItem: TXMLDataBindingSimpleTypeAliasItem;
begin
for itemIndex := Pred(ASchema.ItemCount) downto 0 do
begin
item := ASchema.Items[itemIndex];
case item.ItemType of
itComplexTypeAlias:
begin
{ Replace alias element with the actual complex type }
complexAliasItem := TXMLDataBindingComplexTypeAliasItem(item);
if Assigned(complexAliasItem.Item) then
begin
ReplaceItem(complexAliasItem, complexAliasItem.Item);
FreeAndNil(complexAliasItem);
end;
end;
itSimpleTypeAlias:
begin
{ Remove the alias element - TXMLDataBindingInterfaceItem.ReplaceItem
will take care of fixing it's properties. }
simpleAliasItem := TXMLDataBindingSimpleTypeAliasItem(item);
ReplaceItem(simpleAliasItem, nil);
FreeAndNil(simpleAliasItem);
end;
end;
end;
end;
procedure TXMLDataBindingGenerator.ResolveItem(ASchema: TXMLDataBindingSchema; AItem: TXMLDataBindingUnresolvedItem);
var
referenceItem: TXMLDataBindingItem;
begin
if not Assigned(AItem) then
Exit;
referenceItem := FindInterface(ASchema, AItem.Name, AItem.InterfaceType);
if (not Assigned(referenceItem)) and
(AItem.InterfaceType = ifElement) then
referenceItem := FindEnumeration(ASchema, AItem.Name);
if Assigned(referenceItem) then
ReplaceItem(AItem, referenceItem);
end;
procedure TXMLDataBindingGenerator.ResolveNameConflicts();
var
itemNames: TX2SOHash;
procedure AddItem(AItem: TXMLDataBindingItem);
var
hashName: String;
items: TObjectList;
begin
hashName := AItem.Name;
if not itemNames.Exists(hashName) then
begin
items := TObjectList.Create(False);
itemNames[hashName] := items;
end else
items := TObjectList(itemNames[hashName]);
items.Add(AItem);
end;
function ResolveItemNameConflict(AItem: TXMLDataBindingItem; ADepth: Integer; out ANewName: String): Boolean;
var
currentDepth: Integer;
parentNode: IXMLNode;
schemaItem: IXMLSchemaItem;
begin
Result := False;
currentDepth := 0;
parentNode := AItem.SchemaItem;
ANewName := AItem.Name;
while Assigned(parentNode) do
begin
parentNode := parentNode.ParentNode;
if Assigned(parentNode) and
Supports(parentNode, IXMLSchemaItem, schemaItem) and
(Length(schemaItem.Name) > 0) then
begin
ANewName := schemaItem.Name + ANewName;
Inc(currentDepth);
if currentDepth = ADepth then
begin
Result := True;
break;
end;
end;
end;
end;
var
schemaIndex: Integer;
schema: TXMLDataBindingSchema;
itemIndex: Integer;
items: TObjectList;
item: TXMLDataBindingItem;
depth: Integer;
newName: String;
resolved: Boolean;
begin
itemNames := TX2SOHash.Create(True);
try
{ Gather names }
for schemaIndex := 0 to Pred(SchemaCount) do
begin
schema := Schemas[schemaIndex];
for itemIndex := 0 to Pred(schema.ItemCount) do
begin
item := schema.Items[itemIndex];
if item.ItemType in [itInterface, itEnumeration] then
AddItem(item);
end;
end;
{ Find conflicts }
itemNames.First();
while itemNames.Next() do
begin
items := TObjectList(itemNames.CurrentValue);
if items.Count > 1 then
begin
{ Attempt to rename items }
for itemIndex := Pred(items.Count) downto 0 do
begin
item := TXMLDataBindingItem(items[itemIndex]);
newName := item.Name;
resolved := False;
depth := 1;
while ResolveItemNameConflict(item, depth, newName) do
begin
if not itemNames.Exists(newName) then
begin
resolved := True;
break;
end else
Inc(depth);
end;
if resolved then
begin
items.Delete(itemIndex);
item.SetName(newName);
AddItem(item);
end;
end;
end;
end;
finally
FreeAndNil(itemNames);
end;
end;
procedure TXMLDataBindingGenerator.PostProcessSchema(ASchema: TXMLDataBindingSchema);
var
itemIndex: Integer;
begin
for itemIndex := Pred(ASchema.ItemCount) downto 0 do
PostProcessItem(ASchema, ASchema.Items[itemIndex]);
end;
procedure TXMLDataBindingGenerator.PostProcessItem(ASchema: TXMLDataBindingSchema; AItem: TXMLDataBindingItem);
var
collectionItem: TXMLDataBindingInterface;
collectionName: string;
enumerationItem: TXMLDataBindingEnumeration;
interfaceItem: TXMLDataBindingInterface;
memberIndex: Integer;
propertyIndex: Integer;
propertyItem: TXMLDataBindingProperty;
repeatingItems: TObjectList;
begin
{ Translate name }
AItem.SetTranslatedName(TranslateItemName(AItem));
{ Extract collections }
if AItem.ItemType = itInterface then
begin
interfaceItem := TXMLDataBindingInterface(AItem);
interfaceItem.CollectionItem := nil;
repeatingItems := TObjectList.Create(False);
try
for propertyIndex := 0 to Pred(interfaceItem.PropertyCount) do
if interfaceItem.Properties[propertyIndex].IsRepeating then
repeatingItems.Add(interfaceItem.Properties[propertyIndex]);
if repeatingItems.Count > 0 then
begin
if repeatingItems.Count = 1 then
begin
{ Single repeating child, the item itself is a collection parent }
interfaceItem.CollectionItem := TXMLDataBindingProperty(repeatingItems[0]);
end else
begin
{ Multiple repeating children, create intermediate collections for each }
for propertyIndex := 0 to Pred(repeatingItems.Count) do
begin
propertyItem := TXMLDataBindingProperty(repeatingItems[propertyIndex]);
// #ToDo1 (MvR) 7-4-2008: check if an item with the "List" postfix
// exists in the schema, as it could cause
// conflicts.
// #ToDo1 (MvR) 7-4-2008: check if the interfaceItem has a BaseItem,
// can't be combined with being a collection
case propertyItem.PropertyType of
ptSimple: collectionName := propertyItem.TranslatedName + CollectionPostfix;
ptItem: collectionName := propertyItem.TranslatedName + CollectionPostfix;
end;
collectionItem := TXMLDataBindingInterface.Create(Self, propertyItem.SchemaItem, collectionName);
collectionItem.CollectionItem := propertyItem;
ASchema.InsertItem(collectionItem, interfaceItem);
propertyItem.Collection := collectionItem;
end;
end;
end;
finally
FreeAndNil(repeatingItems);
end;
end;
{ Process members }
case AItem.ItemType of
itInterface:
begin
interfaceItem := TXMLDataBindingInterface(AItem);
for propertyIndex := 0 to Pred(interfaceItem.PropertyCount) do
PostProcessItem(ASchema, interfaceItem.Properties[propertyIndex]);
end;
itEnumeration:
begin
enumerationItem := TXMLDataBindingEnumeration(AItem);
for memberIndex := 0 to Pred(enumerationItem.MemberCount) do
PostProcessItem(ASchema, enumerationItem.Members[memberIndex]);
end;
end;
end;
function TXMLDataBindingGenerator.TranslateItemName(AItem: TXMLDataBindingItem): String;
begin
Result := AItem.Name;
end;
function TXMLDataBindingGenerator.GetSchemaCount(): Integer;
begin
Result := FSchemas.Count;
end;
function TXMLDataBindingGenerator.GetSchemas(Index: Integer): TXMLDataBindingSchema;
begin
Result := TXMLDataBindingSchema(FSchemas[Index]);
end;
{ TXMLDataBindingGeneratorItem }
constructor TXMLDataBindingGeneratorItem.Create(AOwner: TXMLDataBindingGenerator);
begin
inherited Create();
FOwner := AOwner;
end;
procedure TXMLDataBindingGeneratorItem.ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
begin
end;
{ TXMLDataBindingSchema }
constructor TXMLDataBindingSchema.Create(AOwner: TXMLDataBindingGenerator);
begin
inherited Create(AOwner);
FIncludes := TObjectList.Create(False);
FItems := TObjectList.Create(True);
end;
destructor TXMLDataBindingSchema.Destroy();
begin
FreeAndNil(FItems);
FreeAndNil(FIncludes);
inherited;
end;
procedure TXMLDataBindingSchema.ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
var
itemIndex: Integer;
begin
inherited;
for itemIndex := Pred(ItemCount) downto 0 do
if Items[itemIndex] = AOldItem then
FItems.Extract(AOldItem)
else
Items[itemIndex].ReplaceItem(AOldItem, ANewItem);
end;
procedure TXMLDataBindingSchema.AddInclude(ASchema: TXMLDataBindingSchema);
begin
if FIncludes.IndexOf(ASchema) = -1 then
FIncludes.Add(ASchema);
end;
procedure TXMLDataBindingSchema.AddItem(AItem: TXMLDataBindingItem);
begin
if FItems.IndexOf(AItem) = -1 then
begin
FItems.Add(AItem);
AItem.Schema := Self;
end;
end;
procedure TXMLDataBindingSchema.InsertItem(AItem, AAfter: TXMLDataBindingItem);
var
itemIndex: Integer;
begin
if FItems.IndexOf(AItem) = -1 then
begin
itemIndex := FItems.IndexOf(AAfter);
if itemIndex > -1 then
FItems.Insert(Succ(itemIndex), AItem)
else
FItems.Add(AItem);
AItem.Schema := Self;
end;
end;
function TXMLDataBindingSchema.GetIncludeCount(): Integer;
begin
Result := FIncludes.Count;
end;
function TXMLDataBindingSchema.GetIncludes(Index: Integer): TXMLDataBindingSchema;
begin
Result := TXMLDataBindingSchema(FIncludes[Index]);
end;
function TXMLDataBindingSchema.GetItemCount(): Integer;
begin
Result := FItems.Count;
end;
function TXMLDataBindingSchema.GetItems(Index: Integer): TXMLDataBindingItem;
begin
Result := TXMLDataBindingItem(FItems[Index]);
end;
{ TXMLDataBindingItem }
constructor TXMLDataBindingItem.Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String);
begin
inherited Create(AOwner);
FName := AName;
FSchemaItem := ASchemaItem;
FTranslatedName := AName;
end;
function TXMLDataBindingItem.GetDocumentation(): String;
var
documentationIndex: Integer;
begin
Result := '';
if HasDocumentation then
begin
for documentationIndex := 0 to Pred(SchemaItem.Documentation.Count) do
Result := Result + SchemaItem.Documentation[documentationIndex].Text + #13#10;
Result := Trim(Result);
end;
end;
function TXMLDataBindingItem.GetHasDocumentation(): Boolean;
begin
Result := Assigned(SchemaItem) and
(SchemaItem.Documentation.Count > 0);
end;
function TXMLDataBindingItem.GetIsCollection(): Boolean;
begin
Result := Assigned(FCollectionItem);
end;
procedure TXMLDataBindingItem.SetName(const Value: String);
begin
FName := Value;
end;
procedure TXMLDataBindingItem.SetTranslatedName(const Value: string);
begin
FTranslatedName := Value;
end;
{ TXMLDataBindingInterface }
constructor TXMLDataBindingInterface.Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String);
begin
inherited Create(AOwner, ASchemaItem, AName);
FProperties := TObjectList.Create(True);
FInterfaceType := GetInterfaceType(SchemaItem);
end;
destructor TXMLDataBindingInterface.Destroy;
begin
FreeAndNil(FProperties);
inherited;
end;
procedure TXMLDataBindingInterface.ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
var
propertyIndex: Integer;
propertyItem: TXMLDataBindingProperty;
itemProperty: TXMLDataBindingItemProperty;
simpleProperty: TXMLDataBindingSimpleProperty;
begin
inherited;
for propertyIndex := Pred(PropertyCount) downto 0 do
begin
propertyItem := Properties[propertyIndex];
if propertyItem = AOldItem then
FProperties.Extract(AOldItem)
else
begin
if (AOldItem.ItemType = itSimpleTypeAlias) and
(propertyItem.PropertyType = ptItem) then
begin
itemProperty := TXMLDataBindingItemProperty(propertyItem);
if itemProperty.Item = AOldItem then
begin
{ Replace item property with simple property }
simpleProperty := TXMLDataBindingSimpleProperty.Create(Owner,
itemProperty.SchemaItem,
itemProperty.Name,
TXMLDataBindingSimpleTypeAliasItem(AOldItem).DataType);
{ FProperties owns itemProperty and will free it }
FProperties[propertyIndex] := simpleProperty;
end else
Properties[propertyIndex].ReplaceItem(AOldItem, ANewItem);
end else
Properties[propertyIndex].ReplaceItem(AOldItem, ANewItem);
end;
end;
end;
procedure TXMLDataBindingInterface.AddProperty(AProperty: TXMLDataBindingProperty);
begin
FProperties.Add(AProperty);
end;
function TXMLDataBindingInterface.GetItemType(): TXMLDataBindingItemType;
begin
Result := itInterface;
end;
function TXMLDataBindingInterface.GetPropertyCount(): Integer;
begin
Result := FProperties.Count;
end;
function TXMLDataBindingInterface.GetProperties(Index: Integer): TXMLDataBindingProperty;
begin
Result := TXMLDataBindingProperty(FProperties[Index]);
end;
{ TXMLDataBindingEnumerationMember }
constructor TXMLDataBindingEnumerationMember.Create(AOwner: TXMLDataBindingGenerator; AEnumeration: TXMLDataBindingEnumeration; const AName: String);
begin
inherited Create(AOwner, nil, AName);
FEnumeration := AEnumeration;
end;
function TXMLDataBindingEnumerationMember.GetItemType(): TXMLDataBindingItemType;
begin
Result := itEnumerationMember;
end;
{ TXMLDataBindingEnumeration }
constructor TXMLDataBindingEnumeration.Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; ADataType: IXMLTypeDef; const AName: String);
var
memberIndex: Integer;
begin
inherited Create(AOwner, ASchemaItem, AName);
FDataType := ADataType;
FMembers := TObjectList.Create();
for memberIndex := 0 to Pred(ADataType.Enumerations.Count) do
FMembers.Add(TXMLDataBindingEnumerationMember.Create(Owner, Self, ADataType.Enumerations.Items[memberIndex].Value));
end;
destructor TXMLDataBindingEnumeration.Destroy();
begin
FreeAndNil(FMembers);
inherited;
end;
function TXMLDataBindingEnumeration.GetItemType(): TXMLDataBindingItemType;
begin
Result := itEnumeration;
end;
function TXMLDataBindingEnumeration.GetMemberCount(): Integer;
begin
Result := FMembers.Count;
end;
function TXMLDataBindingEnumeration.GetMembers(Index: Integer): TXMLDataBindingEnumerationMember;
begin
Result := TXMLDataBindingEnumerationMember(FMembers[Index]);
end;
{ TXMLDataBindingProperty }
function TXMLDataBindingProperty.GetItemType(): TXMLDataBindingItemType;
begin
Result := itProperty;
end;
{ TXMLDataBindingSimpleProperty }
constructor TXMLDataBindingSimpleProperty.Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String; ADataType: IXMLTypeDef);
begin
inherited Create(AOwner, ASchemaItem, AName);
FDataType := ADataType;
end;
function TXMLDataBindingSimpleProperty.GetIsReadOnly(): Boolean;
begin
Result := False;
end;
function TXMLDataBindingSimpleProperty.GetPropertyType(): TXMLDataBindingPropertyType;
begin
Result := ptSimple;
end;
{ TXMLDataBindingItemProperty }
constructor TXMLDataBindingItemProperty.Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String; AItem: TXMLDataBindingItem);
begin
inherited Create(AOwner, ASchemaItem, AName);
FItem := AItem;
end;
procedure TXMLDataBindingItemProperty.ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
begin
inherited;
if FItem = AOldItem then
FItem := ANewItem;
end;
function TXMLDataBindingItemProperty.GetIsReadOnly(): Boolean;
begin
Result := Assigned(Item) and (Item.ItemType <> itEnumeration);
end;
function TXMLDataBindingItemProperty.GetPropertyType(): TXMLDataBindingPropertyType;
begin
Result := ptItem;
end;
{ TXMLDataBindingUnresolvedItem }
constructor TXMLDataBindingUnresolvedItem.Create(AOwner: TXMLDataBindingGenerator; ASchemaItem: IXMLSchemaItem; const AName: String; AInterfaceType: TXMLDataBindingInterfaceType);
begin
inherited Create(AOwner, ASchemaItem, AName);
FInterfaceType := AInterfaceType;
end;
function TXMLDataBindingUnresolvedItem.GetItemType(): TXMLDataBindingItemType;
begin
Result := itUnresolved;
end;
{ TXMLDataBindingComplexTypeAliasItem }
procedure TXMLDataBindingComplexTypeAliasItem.ReplaceItem(const AOldItem, ANewItem: TXMLDataBindingItem);
begin
inherited;
if FItem = AOldItem then
FItem := ANewItem;
end;
function TXMLDataBindingComplexTypeAliasItem.GetItemType(): TXMLDataBindingItemType;
begin
Result := itComplexTypeAlias;
end;
{ TXMLDataBindingSimpleTypeAliasItem }
function TXMLDataBindingSimpleTypeAliasItem.GetItemType: TXMLDataBindingItemType;
begin
Result := itSimpleTypeAlias;
end;
end.