Uses of Interface
com.devexperts.qd.DataProvider

Packages that use DataProvider

Package	Description
com.devexperts.qd	This package contains basic interfaces and other API elements of QD system which shall be sufficient for the client application programmer.
com.devexperts.qd.ng	This package contains next-generation interfaces for data and subscription exchange based on RecordCursor class.
com.devexperts.qd.qtp	This package contains interfaces with default implementations required to create and operate a connection using QTP.
com.devexperts.qd.util	This package contains utility classes which are used by QD, but which do not depend on QD and which do not constitute any separate module or subsystem.

Uses of DataProvider in com.devexperts.qd

Subinterfaces of DataProvider in com.devexperts.qd

Modifier and Type	Interface and Description
interface	QDAgent The QDAgent represents an individual data consumer in the QDCollector.

Classes in com.devexperts.qd that implement DataProvider

Modifier and Type	Class and Description
class	DataBuffer Deprecated. Use RecordBuffer instead.

Methods in com.devexperts.qd that return DataProvider

Modifier and Type	Method and Description
DataProvider	DataBuffer.examiningProvider() Deprecated.

Methods in com.devexperts.qd with parameters of type DataProvider

Modifier and Type	Method and Description
void	DataListener.dataAvailable(DataProvider provider) Notifies this listener that data is available in the specified data provider.
void	QDErrorHandler.handleDataError(DataProvider provider, Throwable t)

Uses of DataProvider in com.devexperts.qd.ng

Subinterfaces of DataProvider in com.devexperts.qd.ng

Modifier and Type	Interface and Description
interface	RecordProvider An object that can notify about new records and let retrieve them.

Classes in com.devexperts.qd.ng that implement DataProvider

Modifier and Type	Class and Description
class	AbstractRecordProvider Bridge class that adapts DataProvider and SubscriptionProvider APIs to RecordProvider API.
class	RecordBuffer Buffers int and obj values of data records.

Uses of DataProvider in com.devexperts.qd.qtp

Methods in com.devexperts.qd.qtp with parameters of type DataProvider

Modifier and Type	Method and Description
boolean	AgentChannels.Owner.retrieveData(DataProvider dataProvider, QDContract contract) Retrieves accumulated data from data provider.
boolean	OutputStreamMessageVisitor.visitData(DataProvider provider, MessageType message)
boolean	OutputStreamComposer.visitData(DataProvider provider, MessageType type)
boolean	MessageVisitor.visitData(DataProvider provider, MessageType message) This method consumes available data for data message from the given data provider.
boolean	AbstractQTPComposer.visitData(DataProvider provider, MessageType type) This method consumes available data for data message from the given data provider.
abstract boolean	AbstractMessageVisitor.visitData(DataProvider provider, MessageType message) This method consumes available data for data message from the given data provider.
boolean	MessageVisitor.visitHistoryData(DataProvider provider) Deprecated. use visitData(DataProvider provider, MessageType MessageType.HISTORY_DATA) instead
boolean	AbstractMessageVisitor.visitHistoryData(DataProvider provider)
boolean	MessageVisitor.visitStreamData(DataProvider provider) Deprecated. use visitData(DataProvider provider, MessageType MessageType.STREAM_DATA) instead
boolean	AbstractMessageVisitor.visitStreamData(DataProvider provider)
boolean	MessageVisitor.visitTickerData(DataProvider provider) Deprecated. use visitData(DataProvider provider, MessageType MessageType.TICKER_DATA) instead
boolean	AbstractMessageVisitor.visitTickerData(DataProvider provider)

Uses of DataProvider in com.devexperts.qd.util

Classes in com.devexperts.qd.util that implement DataProvider

Modifier and Type	Class and Description
class	CompositeRecordProvider This class provides an efficient implementation of composite RecordProvider that listens for multiple RecordProvider instances and on retrieve method invocation only retrieves data from the providers that have data available.

Methods in com.devexperts.qd.util with parameters of type DataProvider

Modifier and Type	Method and Description
static RecordProvider	LegacyAdapter.of(DataProvider provider)
void	DataProcessor.startProcessing(DataProvider provider) Deprecated. Starts processing for the specified DataProvider.