Class JsonDataSourceConnection

FastReport json connection

Inheritance
System.Object
Base
DataComponentBase
DataConnectionBase
JsonDataSourceConnection
Implements
Inherited Members
Namespace: FastReport.Data.JsonConnection
Assembly: FastReport.Base.dll
Syntax
public class JsonDataSourceConnection : DataConnectionBase, IFRSerializable, IParent, IJsonProviderSourceConnection

Constructors

JsonDataSourceConnection()

Initialize a new instance

Declaration
public JsonDataSourceConnection()

Fields

TABLE_NAME

Name of json object table

Declaration
public const string TABLE_NAME = "JSON"
Field Value
Type Description
System.String

Methods

CreateAllTables(Boolean)

Fills the Tables collection with all tables available in the database.

Declaration
public override void CreateAllTables(bool initSchema)
Parameters
Type Name Description
System.Boolean initSchema

Set to true to initialize each table's schema.
Overrides

CreateDataSet()

Initializes a DataSet instance.

Declaration
protected override DataSet CreateDataSet()
Returns
Type Description
DataSet

The DataSet object.
Overrides
Remarks

This method is used to support FastReport infrastructure. You don't need to use it.

CreateRelations()

Creates the relations between tables. Applies to XmlDataConnection only.

Declaration
public override void CreateRelations()
Overrides

CreateTable(TableDataSource)

Creates table. For internal use only.

Declaration
public override void CreateTable(TableDataSource source)
Parameters
Type Name Description
TableDataSource source
Overrides

DeleteTable(TableDataSource)

Deletes table. For internal use only.

Declaration
public override void DeleteTable(TableDataSource source)
Parameters
Type Name Description
TableDataSource source
Overrides

FillTableData(DataTable, String, CommandParameterCollection)

Fills the table data.

Declaration
public override void FillTableData(DataTable table, string selectCommand, CommandParameterCollection parameters)
Parameters
Type Name Description
DataTable table

DataTable to fill.
System.String selectCommand

The SQL select command.
CommandParameterCollection parameters

SQL parameters.
Overrides
Remarks

Usually you don't need to use this method. Internally it uses the GetConnection() and GetAdapter(String, DbConnection, CommandParameterCollection) methods to fill the table data. If you create own connection component that does not use nor connection or adapter, then you need to override this method.

FillTableSchema(DataTable, String, CommandParameterCollection)

Fills the table schema.

Declaration
public override void FillTableSchema(DataTable table, string selectCommand, CommandParameterCollection parameters)
Parameters
Type Name Description
DataTable table

DataTable to fill.
System.String selectCommand

The SQL select command.
CommandParameterCollection parameters

SQL parameters.
Overrides
Remarks

Usually you don't need to use this method. Internally it uses the GetConnection() and GetAdapter(String, DbConnection, CommandParameterCollection) methods to fill the table schema. If you create own connection component that does not use nor connection or adapter, then you need to override this method.

GetJson(TableDataSource)

Returns JsonBase object from connection source specific by tableDataSource

Declaration
public JsonBase GetJson(TableDataSource tableDataSource)
Parameters
Type Name Description
TableDataSource tableDataSource
Returns
Type Description
JsonBase

GetTableNames()

Gets an array of table names available in the database.

Declaration
public override string[] GetTableNames()
Returns
Type Description
System.String[]

An array of strings.
Overrides

QuoteIdentifier(String, DbConnection)

Quotes the specified DB identifier such as table name or column name.

Declaration
public override string QuoteIdentifier(string value, DbConnection connection)
Parameters
Type Name Description
System.String value

Identifier to quote.
DbConnection connection

The opened DB connection.
Returns
Type Description
System.String

The quoted identifier.
Overrides

SetConnectionString(String)

Sets the connection string.

Declaration
protected override void SetConnectionString(string value)
Parameters
Type Name Description
System.String value

New connection string.
Overrides
Remarks

Use this method if you need to perform some actions when the connection string is set.

Implements