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GenericRTTI.pas
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356 lines (321 loc) · 9.16 KB
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unit GenericRTTI;
interface
uses
GenericInterfaces,
GenericAttributes,
GenericRTTIHelper,
Data.DB,
TypInfo,
System.RTTI,
System.Classes,
System.SysUtils,
System.Generics.Collections;
type
TGenericRTTI<T : Class, constructor> = class(TInterfacedObject, iGenericRTTI<T>)
private
FInstance : T;
function __FloatFormat( aValue : String ) : Currency;
public
constructor Create(aInstance : T);
destructor Destroy; override;
class function New(aInstance : T) : iGenericRTTI<T>;
class procedure DictionaryFieldClass(var aDictionary : TDictionary<string, string>);
class procedure DictionaryClassField(var aDictionary : TDictionary<string, string>);
class procedure DictionaryClassType(var aDictionary : TDictionary<String, TTypeKind>);
function ListFields(var aDictionary : TDictionary<string, variant>) : iGenericRTTI<T>;
function TableName(var aTableName: String): iGenericRTTI<T>;
function ClassName (var aClassName : String) : iGenericRTTI<T>;
function Update (var aUpdate : String) : iGenericRTTI<T>;
function Where (var aWhere : String) : iGenericRTTI<T>;
function Fields (var aFields : String) : iGenericRTTI<T>;
function FieldsInsert (var aFields : String) : iGenericRTTI<T>;
function Param (var aParam : String) : iGenericRTTI<T>;
function PrimaryKey(var aPK : String) : iGenericRTTI<T>;
end;
implementation
uses
System.Variants;
{ TGenericRTTI<T> }
function TGenericRTTI<T>.ClassName(var aClassName: String): iGenericRTTI<T>;
begin
end;
constructor TGenericRTTI<T>.Create(aInstance : T);
begin
FInstance := aInstance;
end;
destructor TGenericRTTI<T>.Destroy;
begin
inherited;
end;
class procedure TGenericRTTI<T>.DictionaryClassField(
var aDictionary: TDictionary<string, string>);
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsIgnore then
Continue;
aDictionary.Add(prpRtti.DisplayName, prpRtti.FieldName);
end;
finally
ctxRtti.Free;
end;
end;
class procedure TGenericRTTI<T>.DictionaryClassType(
var aDictionary: TDictionary<String, TTypeKind>);
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsIgnore then
Continue;
aDictionary.Add(prpRtti.FieldName, prpRtti.DataType.TypeKind);
end;
finally
ctxRtti.Free;
end;
end;
class procedure TGenericRTTI<T>.DictionaryFieldClass(
var aDictionary: TDictionary<string, string>);
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsIgnore then
Continue;
aDictionary.Add(prpRtti.FieldName, prpRtti.DisplayName);
end;
finally
ctxRtti.Free;
end;
end;
function TGenericRTTI<T>.Fields(var aFields: String): iGenericRTTI<T>;
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Result := Self;
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if not prpRtti.IsIgnore then
aFields := aFields + prpRtti.FieldName + ', ';
end;
finally
aFields := Copy(aFields, 0, Length(aFields) - 2) + ' ';
ctxRtti.Free;
end;
end;
function TGenericRTTI<T>.FieldsInsert(var aFields: String): iGenericRTTI<T>;
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Result := Self;
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsAutoInc then
Continue;
if prpRtti.IsIgnore then
Continue;
aFields := aFields + prpRtti.FieldName + ', ';
end;
finally
aFields := Copy(aFields, 0, Length(aFields) - 2) + ' ';
ctxRtti.Free;
end;
end;
function TGenericRTTI<T>.ListFields(
var aDictionary: TDictionary<string, variant>): iGenericRTTI<T>;
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Result := Self;
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsIgnore then
Continue;
case prpRtti.PropertyType.TypeKind of
tkInteger, tkInt64:
begin
if prpRtti.EhChaveEstrangeira then
begin
if prpRtti.GetValue(Pointer(FInstance)).AsInteger = 0 then
aDictionary.Add(prpRtti.FieldName, Null)
else
aDictionary.Add(prpRtti.FieldName, prpRtti.GetValue(Pointer(FInstance)).AsInteger);
end
else
aDictionary.Add(prpRtti.FieldName, prpRtti.GetValue(Pointer(FInstance)).AsInteger);
end;
tkFloat :
begin
if prpRtti.GetValue(Pointer(FInstance)).TypeInfo = TypeInfo(TDateTime) then
aDictionary.Add(prpRtti.FieldName, StrToDateTime(prpRtti.GetValue(Pointer(FInstance)).ToString))
else
if prpRtti.GetValue(Pointer(FInstance)).TypeInfo = TypeInfo(TDate) then
aDictionary.Add(prpRtti.FieldName, StrToDate(prpRtti.GetValue(Pointer(FInstance)).ToString))
else
if prpRtti.GetValue(Pointer(FInstance)).TypeInfo = TypeInfo(TTime) then
aDictionary.Add(prpRtti.FieldName, StrToTime(prpRtti.GetValue(Pointer(FInstance)).ToString))
else
aDictionary.Add(prpRtti.FieldName, __FloatFormat(prpRtti.GetValue(Pointer(FInstance)).ToString));
end;
tkWChar,
tkLString,
tkWString,
tkUString,
tkString : aDictionary.Add(prpRtti.FieldName, prpRtti.GetValue(Pointer(FInstance)).AsString);
tkVariant : aDictionary.Add(prpRtti.FieldName, prpRtti.GetValue(Pointer(FInstance)).AsVariant);
else
aDictionary.Add(prpRtti.FieldName, prpRtti.GetValue(Pointer(FInstance)).AsString);
end;
end;
finally
ctxRtti.Free;
end;
end;
class function TGenericRTTI<T>.New(aInstance: T): iGenericRTTI<T>;
begin
Result := Self.Create(aInstance);
end;
function TGenericRTTI<T>.Param(var aParam: String): iGenericRTTI<T>;
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Result := Self;
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsIgnore then
Continue;
if prpRtti.IsAutoInc then
Continue;
aParam := aParam + ':' + prpRtti.FieldName + ', ';
end;
finally
aParam := Copy(aParam, 0, Length(aParam) - 2) + ' ';
ctxRtti.Free;
end;
end;
function TGenericRTTI<T>.PrimaryKey(var aPK: String): iGenericRTTI<T>;
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Result := Self;
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.EhChavePrimaria then
aPK := prpRtti.FieldName;
end;
finally
ctxRtti.Free;
end;
end;
function TGenericRTTI<T>.TableName(var aTableName: String): iGenericRTTI<T>;
var
vInfo : PTypeInfo;
vCtxRtti: TRttiContext;
vTypRtti: TRttiType;
begin
Result := Self;
vInfo := System.TypeInfo(T);
vCtxRtti := TRttiContext.Create;
try
vTypRtti := vCtxRtti.GetType(vInfo);
if vTypRtti.Tem<Tabela> then
aTableName := vTypRtti.GetAttribute<Tabela>.Name;
finally
vCtxRtti.Free;
end;
end;
function TGenericRTTI<T>.Update(var aUpdate: String): iGenericRTTI<T>;
var
ctxRtti : TRttiContext;
typRtti : TRttiType;
prpRtti : TRttiProperty;
Info : PTypeInfo;
begin
Result := Self;
Info := System.TypeInfo(T);
ctxRtti := TRttiContext.Create;
try
typRtti := ctxRtti.GetType(Info);
for prpRtti in typRtti.GetProperties do
begin
if prpRtti.IsIgnore then
Continue;
if prpRtti.IsAutoInc then
Continue;
aUpdate := aUpdate + prpRtti.FieldName + ' = :' + prpRtti.FieldName + ', ';
end;
finally
aUpdate := Copy(aUpdate, 0, Length(aUpdate) - 2) + ' ';
ctxRtti.Free;
end;
end;
function TGenericRTTI<T>.Where(var aWhere: String): iGenericRTTI<T>;
begin
end;
function TGenericRTTI<T>.__FloatFormat(aValue: String): Currency;
begin
while Pos('.', aValue) > 0 do
delete(aValue,Pos('.', aValue),1);
Result := StrToCurr(aValue);
end;
end.