OracleDataAdapter Class

Reference

Definition

Namespace:: System.Data.OracleClient

Assembly:: System.Data.OracleClient.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Caution

OracleDataAdapter has been deprecated. http://go.microsoft.com/fwlink/?LinkID=144260

Represents a set of data commands and a connection to a database that are used to fill the DataSet and update the database. This class cannot be inherited.

public ref class OracleDataAdapter sealed : System::Data::Common::DbDataAdapter, System::Data::IDbDataAdapter

public ref class OracleDataAdapter sealed : System::Data::Common::DbDataAdapter, ICloneable

public sealed class OracleDataAdapter : System.Data.Common.DbDataAdapter, System.Data.IDbDataAdapter

public sealed class OracleDataAdapter : System.Data.Common.DbDataAdapter, ICloneable

[System.Obsolete("OracleDataAdapter has been deprecated. http://go.microsoft.com/fwlink/?LinkID=144260", false)]
public sealed class OracleDataAdapter : System.Data.Common.DbDataAdapter, ICloneable

type OracleDataAdapter = class
    inherit DbDataAdapter
    interface IDbDataAdapter
    interface IDataAdapter

type OracleDataAdapter = class
    inherit DbDataAdapter
    interface IDbDataAdapter
    interface IDataAdapter
    interface ICloneable

[<System.Obsolete("OracleDataAdapter has been deprecated. http://go.microsoft.com/fwlink/?LinkID=144260", false)>]
type OracleDataAdapter = class
    inherit DbDataAdapter
    interface IDbDataAdapter
    interface IDataAdapter
    interface ICloneable

Public NotInheritable Class OracleDataAdapter
Inherits DbDataAdapter
Implements IDbDataAdapter

Public NotInheritable Class OracleDataAdapter
Inherits DbDataAdapter
Implements ICloneable

Inheritance: Object

MarshalByRefObject

Component

DataAdapter

DbDataAdapter
OracleDataAdapter

Attributes: ObsoleteAttribute

Implements: IDataAdapter IDbDataAdapter ICloneable

Remarks

This type is deprecated and will be removed in a future version of the .NET Framework. For more information, see Oracle and ADO.NET.

The OracleDataAdapter serves as a bridge between a DataSet and database for retrieving and saving data. The OracleDataAdapter provides this bridge by using Fill to load data from the database into the DataSet, and using Update to send changes made in the DataSet back to the data source.

When the OracleDataAdapter fills a DataSet, it creates the necessary tables and columns for the returned data if they do not already exist. However, primary key information is not included in the implicitly created schema unless the MissingSchemaAction property is set to AddWithKey. You may also have the OracleDataAdapter create the schema of the DataSet, including primary key information, before filling it with data using FillSchema. For more information, see Adding Existing Constraints to a DataSet.

Note

By default, numeric fields imported to a DataTable with Fill are mapped to OracleNumber objects. It is possible to overflow the OracleNumber, and throw an Oracle exception, by importing a non-integral numeric value that is either too large or too high precision for the OracleNumber's precision limitations. Refer to the description of OracleNumber for more information.

The OracleDataAdapter also includes the SelectCommand, InsertCommand, DeleteCommand, UpdateCommand, and TableMappings properties to facilitate loading and updating of data.

The .NET Framework Data Provider for Oracle does not support batched SQL statements. However, it does allow you to use multiple REF CURSOR output parameters to fill a DataSet, each in its own DataTable. You must define the parameters, mark them as output parameters, and indicate that they are REF CURSOR data types. Note that you cannot use the Update method when the OracleDataAdapter is filled using REF CURSOR parameters returned by a stored procedure, because Oracle does not provide the information necessary to determine what the table name and column names are when the SQL statement is executed. The following C# example assumes that you have created this stored procedure.

Create the following Oracle package on the Oracle server.

CREATE OR REPLACE PACKAGE CURSPKG AS   
   TYPE T_CURSOR IS REF CURSOR;   
   PROCEDURE OPEN_ONE_CURSOR (N_EMPNO IN NUMBER,   
      IO_CURSOR OUT T_CURSOR);   
   PROCEDURE OPEN_TWO_CURSORS (EMPCURSOR OUT T_CURSOR,   
      DEPTCURSOR OUT T_CURSOR);  
END CURSPKG;  
/

Create the following Oracle package body on the Oracle server.

CREATE OR REPLACE PACKAGE BODY CURSPKG AS   
    PROCEDURE OPEN_ONE_CURSOR (N_EMPNO IN NUMBER,   
                               IO_CURSOR OUT T_CURSOR)   
    IS   
        V_CURSOR T_CURSOR;   
    BEGIN   
        IF N_EMPNO <> 0 THEN   
             OPEN V_CURSOR FOR   
             SELECT EMP.EMPNO, EMP.ENAME, DEPT.DEPTNO, DEPT.DNAME   
                  FROM EMP, DEPT   
                  WHERE EMP.DEPTNO = DEPT.DEPTNO   
                        AND EMP.EMPNO = N_EMPNO;   
        ELSE   
             OPEN V_CURSOR FOR   
             SELECT EMP.EMPNO, EMP.ENAME, DEPT.DEPTNO, DEPT.DNAME   
                  FROM EMP, DEPT   
                  WHERE EMP.DEPTNO = DEPT.DEPTNO;   
        END IF;   
        IO_CURSOR := V_CURSOR;   
    END OPEN_ONE_CURSOR;   
    PROCEDURE OPEN_TWO_CURSORS (EMPCURSOR OUT T_CURSOR,   
                                DEPTCURSOR OUT T_CURSOR)   
    IS   
        V_CURSOR1 T_CURSOR;   
        V_CURSOR2 T_CURSOR;   
    BEGIN   
        OPEN V_CURSOR1 FOR SELECT * FROM EMP;   
        OPEN V_CURSOR2 FOR SELECT * FROM DEPT;   
        EMPCURSOR  := V_CURSOR1;   
        DEPTCURSOR := V_CURSOR2;   
    END OPEN_TWO_CURSORS;   
END CURSPKG;  
 /

The following C# example demonstrates how you might obtain table and column information using the stored procedure.

// GetConnectionString() returns a connection string for  
// the data source.  

string connString = GetConnectionString();  
DataSet ds = new DataSet();  
OracleConnection conn = new OracleConnection(connString);  
OracleCommand cmd = conn.CreateCommand();  

cmd.CommandText = "CURSPKG.OPEN_TWO_CURSORS";  
cmd.CommandType = CommandType.StoredProcedure;  
cmd.Parameters.Add("EMPCURSOR", OracleType.Cursor).Direction =   
       ParameterDirection.Output;  
cmd.Parameters.Add("DEPTCURSOR", OracleType.Cursor).Direction =   
       ParameterDirection.Output;  

OracleDataAdapter da = new OracleDataAdapter(cmd);  
da.TableMappings.Add("Table", "Emp");  
da.TableMappings.Add("Table1", "Dept");  
da.Fill(ds);  

ds.Relations.Add("EmpDept", ds.Tables["Dept"].Columns["Deptno"],   
      ds.Tables["Emp"].Columns["Deptno"], false);

The following Visual Basic example demonstrates how to use an OracleDataAdapter to fill a DataSet using an Oracle REF CURSOR. These examples use tables that are defined in the Oracle Scott/Tiger schema, and require the following PL/SQL package and package body. You must create these on your server to use the examples.

Create the following Oracle package on the Oracle server.

CREATE OR REPLACE PACKAGE CURSPKG AS   
   TYPE T_CURSOR IS REF CURSOR;   
   PROCEDURE OPEN_ONE_CURSOR (N_EMPNO IN NUMBER,   
      IO_CURSOR OUT T_CURSOR);   
   PROCEDURE OPEN_TWO_CURSORS (EMPCURSOR OUT T_CURSOR,   
      DEPTCURSOR OUT T_CURSOR);  
END CURSPKG;  
/

Create the following Oracle package body on the Oracle server.

CREATE OR REPLACE PACKAGE BODY CURSPKG AS   
    PROCEDURE OPEN_ONE_CURSOR (N_EMPNO IN NUMBER,   
                               IO_CURSOR OUT T_CURSOR)   
    IS   
        V_CURSOR T_CURSOR;   
    BEGIN   
        IF N_EMPNO <> 0 THEN   
             OPEN V_CURSOR FOR   
             SELECT EMP.EMPNO, EMP.ENAME, DEPT.DEPTNO, DEPT.DNAME   
                  FROM EMP, DEPT   
                  WHERE EMP.DEPTNO = DEPT.DEPTNO   
                        AND EMP.EMPNO = N_EMPNO;   
        ELSE   
             OPEN V_CURSOR FOR   
             SELECT EMP.EMPNO, EMP.ENAME, DEPT.DEPTNO, DEPT.DNAME   
                  FROM EMP, DEPT   
                  WHERE EMP.DEPTNO = DEPT.DEPTNO;   
        END IF;   
        IO_CURSOR := V_CURSOR;   
    END OPEN_ONE_CURSOR;   
    PROCEDURE OPEN_TWO_CURSORS (EMPCURSOR OUT T_CURSOR,   
                                DEPTCURSOR OUT T_CURSOR)   
    IS   
        V_CURSOR1 T_CURSOR;   
        V_CURSOR2 T_CURSOR;   
    BEGIN   
        OPEN V_CURSOR1 FOR SELECT * FROM EMP;   
        OPEN V_CURSOR2 FOR SELECT * FROM DEPT;   
        EMPCURSOR  := V_CURSOR1;   
        DEPTCURSOR := V_CURSOR2;   
    END OPEN_TWO_CURSORS;   
END CURSPKG;  
 /

This Visual Basic example executes a PL/SQL stored procedure that returns two REF CURSOR parameters, and fills a DataSet with the rows that are returned.

' GetConnectionString() returns a connection string for  
' the data source.  

    Dim connString As New String(GetConnectionString())  
    Dim ds As New DataSet()  
    Dim conn As New OracleConnection(connString)  
    Dim cmd As OracleCommand = conn.CreateCommand()  

    cmd.CommandText = "CURSPKG.OPEN_TWO_CURSORS"  
    cmd.CommandType = CommandType.StoredProcedure  
    cmd.Parameters.Add("EMPCURSOR", OracleType.Cursor).Direction = _  
       ParameterDirection.Output  
    cmd.Parameters.Add("DEPTCURSOR", OracleType.Cursor).Direction = _  
       ParameterDirection.Output  

    Dim da As New OracleDataAdapter(cmd)  
    da.TableMappings.Add("Table", "Emp")  
    da.TableMappings.Add("Table1", "Dept")  
    da.Fill(ds)  

    ds.Relations.Add("EmpDept", ds.Tables("Dept").Columns("Deptno"), _  
      ds.Tables("Emp").Columns("Deptno"), False)

After using the OracleDataAdapter to perform a Fill or FillSchema operation, the DataColumn.ReadOnly property always returns false, regardless of whether a column can be updated or not, because the Oracle server does not return this information.

Constructors

OracleDataAdapter()	Initializes a new instance of the OracleDataAdapter class.
OracleDataAdapter(OracleCommand)	Initializes a new instance of the OracleDataAdapter class with the specified SQL SELECT statement.
OracleDataAdapter(String, OracleConnection)	Initializes a new instance of the OracleDataAdapter class with an SQL SELECT statement and an OracleConnection.
OracleDataAdapter(String, String)	Initializes a new instance of the OracleDataAdapter class with an SQL SELECT statement and a connection string.

Fields

DefaultSourceTableName

The default name used by the DataAdapter object for table mappings.

(Inherited from DbDataAdapter)

Properties

AcceptChangesDuringFill	Gets or sets a value indicating whether AcceptChanges() is called on a DataRow after it is added to the DataTable during any of the Fill operations. (Inherited from DataAdapter)
AcceptChangesDuringUpdate	Gets or sets whether AcceptChanges() is called during a Update(DataSet). (Inherited from DataAdapter)
CanRaiseEvents	Gets a value indicating whether the component can raise an event. (Inherited from Component)
Container	Gets the IContainer that contains the Component. (Inherited from Component)
ContinueUpdateOnError	Gets or sets a value that specifies whether to generate an exception when an error is encountered during a row update. (Inherited from DataAdapter)
DeleteCommand	Gets or sets an SQL statement or stored procedure used to delete records in the database.
DesignMode	Gets a value that indicates whether the Component is currently in design mode. (Inherited from Component)
Events	Gets the list of event handlers that are attached to this Component. (Inherited from Component)
FillCommandBehavior	Gets or sets the behavior of the command used to fill the data adapter. (Inherited from DbDataAdapter)
FillLoadOption	Gets or sets the LoadOption that determines how the adapter fills the DataTable from the DbDataReader. (Inherited from DataAdapter)
InsertCommand	Gets or sets an SQL statement or stored procedure used to insert new records into the database.
MissingMappingAction	Determines the action to take when incoming data does not have a matching table or column. (Inherited from DataAdapter)
MissingSchemaAction	Determines the action to take when existing DataSet schema does not match incoming data. (Inherited from DataAdapter)
ReturnProviderSpecificTypes	Gets or sets whether the `Fill` method should return provider-specific values or common CLS-compliant values. (Inherited from DataAdapter)
SelectCommand	Gets or sets an SQL statement or stored procedure used to select records in the database.
Site	Gets or sets the ISite of the Component. (Inherited from Component)
TableMappings	Gets a collection that provides the primary mapping between a source table and a DataTable. (Inherited from DataAdapter)
UpdateBatchSize	Gets or sets a value that enables or disables batch processing support, and specifies the number of commands that can be executed in a batch.
UpdateBatchSize	Gets or sets a value that enables or disables batch processing support, and specifies the number of commands that can be executed in a batch. (Inherited from DbDataAdapter)
UpdateCommand	Gets or sets an SQL statement or stored procedure used to update records in the database.

Methods

AddToBatch(IDbCommand)	Adds a IDbCommand to the current batch. (Inherited from DbDataAdapter)
ClearBatch()	Removes all IDbCommand objects from the batch. (Inherited from DbDataAdapter)
CloneInternals()	Obsolete. Obsolete. Obsolete. Obsolete. Creates a copy of this instance of DataAdapter. (Inherited from DataAdapter)
CreateObjRef(Type)	Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object. (Inherited from MarshalByRefObject)
CreateRowUpdatedEvent(DataRow, IDbCommand, StatementType, DataTableMapping)	Initializes a new instance of the RowUpdatedEventArgs class. (Inherited from DbDataAdapter)
CreateRowUpdatingEvent(DataRow, IDbCommand, StatementType, DataTableMapping)	Initializes a new instance of the RowUpdatingEventArgs class. (Inherited from DbDataAdapter)
CreateTableMappings()	Creates a new DataTableMappingCollection. (Inherited from DataAdapter)
Dispose()	Releases all resources used by the Component. (Inherited from Component)
Dispose(Boolean)	Releases the unmanaged resources used by the DbDataAdapter and optionally releases the managed resources. (Inherited from DbDataAdapter)
Equals(Object)	Determines whether the specified object is equal to the current object. (Inherited from Object)
ExecuteBatch()	Executes the current batch. (Inherited from DbDataAdapter)
Fill(DataSet, Int32, Int32, String, IDbCommand, CommandBehavior)	Adds or refreshes rows in a specified range in the DataSet to match those in the data source using the DataSet and source table names, command string, and command behavior. (Inherited from DbDataAdapter)
Fill(DataSet, Int32, Int32, String)	Adds or refreshes rows in a specified range in the DataSet to match those in the data source using the DataSet and DataTable names. (Inherited from DbDataAdapter)
Fill(DataSet, String, IDataReader, Int32, Int32)	Adds or refreshes rows in a specified range in the DataSet to match those in the data source using the DataSet, DataTable, and IDataReader names. (Inherited from DbDataAdapter)
Fill(DataSet, String)	Adds or refreshes rows in the DataSet to match those in the data source using the DataSet and DataTable names. (Inherited from DbDataAdapter)
Fill(DataSet)	Adds or refreshes rows in the DataSet. (Inherited from DbDataAdapter)
Fill(DataTable, IDataReader)	Adds or refreshes rows in a DataTable to match those in the data source using the specified DataTable and IDataReader names. (Inherited from DbDataAdapter)
Fill(DataTable, IDbCommand, CommandBehavior)	Adds or refreshes rows in a DataTable to match those in the data source using the specified DataTable, IDbCommand and CommandBehavior. (Inherited from DbDataAdapter)
Fill(DataTable)	Adds or refreshes rows in a specified range in the DataSet to match those in the data source using the DataTable name. (Inherited from DbDataAdapter)
Fill(DataTable[], IDataReader, Int32, Int32)	Adds or refreshes rows in a specified range in the collection of DataTable objects to match those in the data source. (Inherited from DataAdapter)
Fill(DataTable[], Int32, Int32, IDbCommand, CommandBehavior)	Adds or refreshes rows in a specified range in the DataSet to match those in the data source using the DataSet and DataTable names. (Inherited from DbDataAdapter)
Fill(Int32, Int32, DataTable[])	Adds or refreshes rows in one or more DataTable objects to match those in the data source starting at the specified record and retrieving up to the specified maximum number of records. (Inherited from DbDataAdapter)
FillSchema(DataSet, SchemaType, IDbCommand, String, CommandBehavior)	Adds a DataTable to the specified DataSet and configures the schema to match that in the data source based on the specified SchemaType. (Inherited from DbDataAdapter)
FillSchema(DataSet, SchemaType, String, IDataReader)	Adds a DataTable to the specified DataSet. (Inherited from DataAdapter)
FillSchema(DataSet, SchemaType, String)	Adds a DataTable to the specified DataSet and configures the schema to match that in the data source based upon the specified SchemaType and DataTable. (Inherited from DbDataAdapter)
FillSchema(DataSet, SchemaType)	Adds a DataTable named "Table" to the specified DataSet and configures the schema to match that in the data source based on the specified SchemaType. (Inherited from DbDataAdapter)
FillSchema(DataTable, SchemaType, IDataReader)	Adds a DataTable to the specified DataSet. (Inherited from DataAdapter)
FillSchema(DataTable, SchemaType, IDbCommand, CommandBehavior)	Configures the schema of the specified DataTable based on the specified SchemaType, command string, and CommandBehavior values. (Inherited from DbDataAdapter)
FillSchema(DataTable, SchemaType)	Configures the schema of the specified DataTable based on the specified SchemaType. (Inherited from DbDataAdapter)
GetBatchedParameter(Int32, Int32)	Returns a IDataParameter from one of the commands in the current batch. (Inherited from DbDataAdapter)
GetBatchedRecordsAffected(Int32, Int32, Exception)	Returns information about an individual update attempt within a larger batched update. (Inherited from DbDataAdapter)
GetFillParameters()	Gets the parameters set by the user when executing an SQL SELECT statement. (Inherited from DbDataAdapter)
GetHashCode()	Serves as the default hash function. (Inherited from Object)
GetLifetimeService()	Obsolete. Retrieves the current lifetime service object that controls the lifetime policy for this instance. (Inherited from MarshalByRefObject)
GetService(Type)	Returns an object that represents a service provided by the Component or by its Container. (Inherited from Component)
GetType()	Gets the Type of the current instance. (Inherited from Object)
HasTableMappings()	Indicates whether a DataTableMappingCollection has been created. (Inherited from DataAdapter)
InitializeBatching()	Initializes batching for the DbDataAdapter. (Inherited from DbDataAdapter)
InitializeLifetimeService()	Obsolete. Obtains a lifetime service object to control the lifetime policy for this instance. (Inherited from MarshalByRefObject)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
MemberwiseClone(Boolean)	Creates a shallow copy of the current MarshalByRefObject object. (Inherited from MarshalByRefObject)
OnFillError(FillErrorEventArgs)	Raises the FillError event. (Inherited from DbDataAdapter)
OnRowUpdated(RowUpdatedEventArgs)	Raises the `RowUpdated` event of a .NET data provider. (Inherited from DbDataAdapter)
OnRowUpdating(RowUpdatingEventArgs)	Raises the `RowUpdating` event of a .NET data provider. (Inherited from DbDataAdapter)
ResetFillLoadOption()	Resets FillLoadOption to its default state and causes Fill(DataSet) to honor AcceptChangesDuringFill. (Inherited from DataAdapter)
ShouldSerializeAcceptChangesDuringFill()	Determines whether the AcceptChangesDuringFill property should be persisted. (Inherited from DataAdapter)
ShouldSerializeFillLoadOption()	Determines whether the FillLoadOption property should be persisted. (Inherited from DataAdapter)
ShouldSerializeTableMappings()	Determines whether one or more DataTableMapping objects exist and they should be persisted. (Inherited from DataAdapter)
TerminateBatching()	Ends batching for the DbDataAdapter. (Inherited from DbDataAdapter)
ToString()	Returns a String containing the name of the Component, if any. This method should not be overridden. (Inherited from Component)
Update(DataRow[], DataTableMapping)	Updates the values in the database by executing the respective INSERT, UPDATE, or DELETE statements for each inserted, updated, or deleted row in the specified array of DataRow objects. (Inherited from DbDataAdapter)
Update(DataRow[])	Updates the values in the database by executing the respective INSERT, UPDATE, or DELETE statements for each inserted, updated, or deleted row in the specified array in the DataSet. (Inherited from DbDataAdapter)
Update(DataSet, String)	Updates the values in the database by executing the respective INSERT, UPDATE, or DELETE statements for each inserted, updated, or deleted row in the DataSet with the specified DataTable name. (Inherited from DbDataAdapter)
Update(DataSet)	Updates the values in the database by executing the respective INSERT, UPDATE, or DELETE statements for each inserted, updated, or deleted row in the specified DataSet. (Inherited from DbDataAdapter)
Update(DataTable)	Updates the values in the database by executing the respective INSERT, UPDATE, or DELETE statements for each inserted, updated, or deleted row in the specified DataTable. (Inherited from DbDataAdapter)

Events

Disposed	Occurs when the component is disposed by a call to the Dispose() method. (Inherited from Component)
FillError	Returned when an error occurs during a fill operation. (Inherited from DbDataAdapter)
RowUpdated	Occurs during an update operation after a command is executed against the database.
RowUpdating	Occurs during Update(DataSet) before a command is executed against the data source.

Explicit Interface Implementations

ICloneable.Clone()	For a description of this member, see Clone().
ICloneable.Clone()	Obsolete. Creates a new object that is a copy of the current instance. (Inherited from DbDataAdapter)
IDataAdapter.TableMappings	Gets a collection that indicates how a source table is mapped to a dataset table. (Inherited from DataAdapter)
IDbDataAdapter.DeleteCommand	For a description of this member, see DeleteCommand.
IDbDataAdapter.InsertCommand	For a description of this member, see InsertCommand.
IDbDataAdapter.SelectCommand	For a description of this member, see SelectCommand.
IDbDataAdapter.UpdateCommand	For a description of this member, see UpdateCommand.

Applies to

Dela via