IDADelta

 

Adds a change to the set of changes.

procedure Add(aChange: TDADeltaChange)

Parameters:

• aChange: given change.

---

Adds a change to the set of changes.

function Add(aRecordID: Integer; aChangeType: TDAChangeType; aStatus: TDAChangeStatus; const aMessage: string): TDADeltaChange

Parameters:

• aRecordID: record ID
• aChangeType: type of change
• aStatus: status of the change:
• aMessage: message

---

Adds a new field.

procedure AddFieldName(const aFieldName: string; const aDataType: TDADataType)

Parameters:

• aFieldName: field name
• aDataType: data type

---

Adds a new key field.

procedure AddKeyFieldName(const aKeyFieldName: string)

Parameters:

• aKeyFieldName: given key field

---

Sets datatable as owner.

procedure AssignDataTable(aDataTable: TComponent)

Parameters:

• aDataTable: given datatable.

---

Returns count of unfinished changes.

property BlockedRecordCount: Integer read

---

Discards the certain change.

procedure CancelChange(aDataTable: TComponent)

Parameters:

• aDataTable: datatable where changes should be discarded

---

Discards all changes in all tables.

procedure CancelChangesInAllTables

---

Provides access to all the individual changes contained in the delta. The indexer is zero-based and the number of elements is indicated by the Count property.

property Changes[Index: Integer]: TDADeltaChange read

---

Clears the delta and discards all the individual changes that it contains.

procedure Clear(DoClearFieldNames: Boolean; DoClearKeyFieldNames: Boolean)

Parameters:

• DoClearFieldNames: remove all fields or not
• DoClearKeyFieldNames: remove all key fields or not

---

Clears list of fields.

procedure ClearFieldNames

---

Clears list of key's fields.

procedure ClearKeyFieldNames

---

Returns the number of Changes contained within the delta.

property Count: Integer read

---

Gets the ChangeID which the next TDADeltaChange will get when adding a new entry to this TDADelta.

property CurrentChangeID: Integer read

---

Deletes certain on the Index change.

procedure Delete(Index: Integer)

Parameters:

• Index: given index

---

Allows to sort delta changes

property DeltaChangesSorted: Boolean read write

---

Ends changes for the specified table and applies updates.

procedure EndChange(aDataTable: TComponent)

Parameters:

• aDataTable: given datatable

---

Ends changes for all table and applies updates.

procedure EndChangesInAllTables

---

Finds the change with given aRecID

function FindChange(aRecID: Integer): TDADeltaChange

Parameters:

• aRecID: record ID

---

Gives the count of changes with certain status.

function GetCountByStatus(aChangeStatus: TDAChangeStatus): Integer

Parameters:

• aChangeStatus: given status

---

Returns delta instance

function GetDelta: TDADelta

---

Checks status of given datatable

function GetInChange(aDataTable: TComponent): Boolean

Parameters:

• aDataTable: given datatable

---

Returns the position of a aChange in the list.

function IndexOf(aChange: TDADeltaChange): Integer

Parameters:

• aChange: Change whose index will be returned.

---

Returns the position of a logged field in the list.

function IndexOfLoggedField(const aName: string): Integer

Parameters:

• aName: field name

---

Indicates whether it is possible to edit a current row in the specified table.

function IsCanEditCurrentRow(aDataTable: TComponent): Boolean

Parameters:

• aDataTable: given datatable

---

Indicates whether the record in question represents a newly inserted record that doesn't exist on the server yet (true) or a changed record that already exists on the server (false). If called without parameter (or with -1), the result value will indicate the status of the current record in the data table associated with the delta (client-side only). If called with a non-negative record id, it will indicate the status of that record.

function IsNewRecord(aRecordID: Integer): Boolean

Parameters:

• aRecordID: record ID

---

Indicates whether the record in question represents a newly inserted record that doesn't exist on the server yet (true) or a changed record that already exists on the server (false). If called without parameter (or with -1), the result value will indicate the status of the current record in the data table associated with the delta (client-side only). If called with a non-negative record id, it will indicate the status of that record.

function IsNewRecord2(aDataTable: TComponent; aRecordID: Integer): Boolean

Parameters:

• aDataTable: DataTable
• aRecordID: record ID

---

Indicates the number of fields that comprise the key for this delta.

property KeyFieldCount: Integer read

---

Lists the names of the fields that comprise the key for this delta. The indexer is zero-based and the number of elements is indicated by the KeyFieldCount property.

property KeyFieldNames[Index: Integer]: string read

---

Shows the number of fields that comprise the data for this delta.

property LoggedFieldCount: Integer read

---

Holds the names of the fields that comprise the data for this delta. The indexer is zero-based and the number of elements is indicated by the LoggedFieldCount property.

property LoggedFieldNames[Index: Integer]: string read

---

Lists the data types of the fields that comprise the data for this delta. The indexer is zero-based and the number of elements is indicated by the LoggedFieldCount property.

property LoggedFieldTypes[Index: Integer]: TDADataType read write

---

Defines the name of the logical entity that this delta pertains to. Usually, this will be the name of the data table that changes should be applied to.

property LogicalName: string read write

---

Removes a delta change to the list of changes maintained within the delta.

procedure RemoveChange(aChange: TDADeltaChange)

Parameters:

• aChange: given change

---

Deletes certain logged field.

procedure RemoveLoggedField(AFieldName: string)

Parameters:

• AFieldName: field name

---

Deletes certain logged field.

procedure RemoveLoggedField(Index: Integer)

Parameters:

• Index: index of field

---

Removes changes that don't contain any modifications.

procedure RemoveUnchangedChanges

---

Restores the last change.

procedure RestoreLastChange(aDataTable: TComponent)

Parameters:

• aDataTable: given datatable

---

Starts the Delta for the specified table.

procedure StartChange(aChangeType: TDAChangeType; aDataTable: TComponent)

Parameters:

• aChangeType: required type
• aDataTable: given datatable

 

Returns count of unfinished changes.

property BlockedRecordCount: Integer read

---

Provides access to all the individual changes contained in the delta. The indexer is zero-based and the number of elements is indicated by the Count property.

property Changes[Index: Integer]: TDADeltaChange read

---

Returns the number of Changes contained within the delta.

property Count: Integer read

---

Gets the ChangeID which the next TDADeltaChange will get when adding a new entry to this TDADelta.

property CurrentChangeID: Integer read

---

Allows to sort delta changes

property DeltaChangesSorted: Boolean read write

---

Indicates the number of fields that comprise the key for this delta.

property KeyFieldCount: Integer read

---

Lists the names of the fields that comprise the key for this delta. The indexer is zero-based and the number of elements is indicated by the KeyFieldCount property.

property KeyFieldNames[Index: Integer]: string read

---

Shows the number of fields that comprise the data for this delta.

property LoggedFieldCount: Integer read

---

Holds the names of the fields that comprise the data for this delta. The indexer is zero-based and the number of elements is indicated by the LoggedFieldCount property.

property LoggedFieldNames[Index: Integer]: string read

---

Lists the data types of the fields that comprise the data for this delta. The indexer is zero-based and the number of elements is indicated by the LoggedFieldCount property.

property LoggedFieldTypes[Index: Integer]: TDADataType read write

---

Defines the name of the logical entity that this delta pertains to. Usually, this will be the name of the data table that changes should be applied to.

property LogicalName: string read write

 

Adds a change to the set of changes.

procedure Add(aChange: TDADeltaChange)

Parameters:

• aChange: given change.

---

Adds a change to the set of changes.

function Add(aRecordID: Integer; aChangeType: TDAChangeType; aStatus: TDAChangeStatus; const aMessage: string): TDADeltaChange

Parameters:

• aRecordID: record ID
• aChangeType: type of change
• aStatus: status of the change:
• aMessage: message

---

Adds a new field.

procedure AddFieldName(const aFieldName: string; const aDataType: TDADataType)

Parameters:

• aFieldName: field name
• aDataType: data type

---

Adds a new key field.

procedure AddKeyFieldName(const aKeyFieldName: string)

Parameters:

• aKeyFieldName: given key field

---

Sets datatable as owner.

procedure AssignDataTable(aDataTable: TComponent)

Parameters:

• aDataTable: given datatable.

---

Discards the certain change.

procedure CancelChange(aDataTable: TComponent)

Parameters:

• aDataTable: datatable where changes should be discarded

---

Discards all changes in all tables.

procedure CancelChangesInAllTables

---

Clears the delta and discards all the individual changes that it contains.

procedure Clear(DoClearFieldNames: Boolean; DoClearKeyFieldNames: Boolean)

Parameters:

• DoClearFieldNames: remove all fields or not
• DoClearKeyFieldNames: remove all key fields or not

---

Clears list of fields.

procedure ClearFieldNames

---

Clears list of key's fields.

procedure ClearKeyFieldNames

---

Deletes certain on the Index change.

procedure Delete(Index: Integer)

Parameters:

• Index: given index

---

Ends changes for the specified table and applies updates.

procedure EndChange(aDataTable: TComponent)

Parameters:

• aDataTable: given datatable

---

Ends changes for all table and applies updates.

procedure EndChangesInAllTables

---

Finds the change with given aRecID

function FindChange(aRecID: Integer): TDADeltaChange

Parameters:

• aRecID: record ID

---

Gives the count of changes with certain status.

function GetCountByStatus(aChangeStatus: TDAChangeStatus): Integer

Parameters:

• aChangeStatus: given status

---

Returns delta instance

function GetDelta: TDADelta

---

Checks status of given datatable

function GetInChange(aDataTable: TComponent): Boolean

Parameters:

• aDataTable: given datatable

---

Returns the position of a aChange in the list.

function IndexOf(aChange: TDADeltaChange): Integer

Parameters:

• aChange: Change whose index will be returned.

---

Returns the position of a logged field in the list.

function IndexOfLoggedField(const aName: string): Integer

Parameters:

• aName: field name

---

Indicates whether it is possible to edit a current row in the specified table.

function IsCanEditCurrentRow(aDataTable: TComponent): Boolean

Parameters:

• aDataTable: given datatable

---

Indicates whether the record in question represents a newly inserted record that doesn't exist on the server yet (true) or a changed record that already exists on the server (false). If called without parameter (or with -1), the result value will indicate the status of the current record in the data table associated with the delta (client-side only). If called with a non-negative record id, it will indicate the status of that record.

function IsNewRecord(aRecordID: Integer): Boolean

Parameters:

• aRecordID: record ID

---

Indicates whether the record in question represents a newly inserted record that doesn't exist on the server yet (true) or a changed record that already exists on the server (false). If called without parameter (or with -1), the result value will indicate the status of the current record in the data table associated with the delta (client-side only). If called with a non-negative record id, it will indicate the status of that record.

function IsNewRecord2(aDataTable: TComponent; aRecordID: Integer): Boolean

Parameters:

• aDataTable: DataTable
• aRecordID: record ID

---

Removes a delta change to the list of changes maintained within the delta.

procedure RemoveChange(aChange: TDADeltaChange)

Parameters:

• aChange: given change

---

Deletes certain logged field.

procedure RemoveLoggedField(AFieldName: string)

Parameters:

• AFieldName: field name

---

Deletes certain logged field.

procedure RemoveLoggedField(Index: Integer)

Parameters:

• Index: index of field

---

Removes changes that don't contain any modifications.

procedure RemoveUnchangedChanges

---

Restores the last change.

procedure RestoreLastChange(aDataTable: TComponent)

Parameters:

• aDataTable: given datatable

---

Starts the Delta for the specified table.

procedure StartChange(aChangeType: TDAChangeType; aDataTable: TComponent)

Parameters:

• aChangeType: required type
• aDataTable: given datatable