Package io.deephaven.engine.table.impl.locations.impl

Class CompositeTableDataService

java.lang.Object

io.deephaven.engine.table.impl.locations.impl.AbstractTableDataService

io.deephaven.engine.table.impl.locations.impl.CompositeTableDataService

All Implemented Interfaces:

TableDataService, NamedImplementation

public class CompositeTableDataService
extends AbstractTableDataService

Routing TableDataService that applies a selector function to pick service(s) for each request. It is assumed that each service will provide access to a non-overlapping set of table locations for any table key.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	CompositeTableDataService.ServiceSelector

Constructor Summary

Constructors

Constructor	Description
CompositeTableDataService(@NotNull String name, @NotNull CompositeTableDataService.ServiceSelector serviceSelector)

Method Summary

Modifier and Type	Method	Description
String	describe()	Get a detailed description string.
String	getImplementationName()	Get a name for the implementing class.
@Nullable TableLocationProvider	getRawTableLocationProvider(@NotNull TableKey tableKey, @NotNull TableLocationKey tableLocationKey)	Request the single raw TableLocationProvider from this service that has the TableLocation for tableKey and tableLocationKey.
protected @NotNull TableLocationProvider	makeTableLocationProvider(@NotNull TableKey tableKey)
void	reset()	Forget all state for subsequent requests for all tables.
void	reset(@NotNull TableKey key)	Forget all state for subsequent requests for a single table.
String	toString()

Methods inherited from class io.deephaven.engine.table.impl.locations.impl.AbstractTableDataService

getName, getTableLocationProvider

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Details

CompositeTableDataService

public CompositeTableDataService(@NotNull
 @NotNull String name,
 @NotNull
 @NotNull CompositeTableDataService.ServiceSelector serviceSelector)

Parameters:

name - optional name for this service

serviceSelector - Function to map a table key to a set of services that should be queried.

Method Details

getRawTableLocationProvider

@Nullable
public @Nullable TableLocationProvider getRawTableLocationProvider(@NotNull
 @NotNull TableKey tableKey,
 @NotNull
 @NotNull TableLocationKey tableLocationKey)

Description copied from interface: TableDataService

Request the single raw TableLocationProvider from this service that has the TableLocation for tableKey and tableLocationKey. A raw TableLocationProvider does not compose multiple TableLocationProviders or delegate to other implementations.

Specified by:

getRawTableLocationProvider in interface TableDataService

Overrides:

getRawTableLocationProvider in class AbstractTableDataService

Parameters:

tableKey - The TableKey to lookup

tableLocationKey - The TableLocationKey to lookup

Returns:

The raw TableLocationProvider that has the TableLocation for tableKey and tableLocationKey, or null if there is none

reset

public void reset()

Description copied from interface: TableDataService

Forget all state for subsequent requests for all tables.

Specified by:

reset in interface TableDataService

Overrides:

reset in class AbstractTableDataService

reset

public void reset(@NotNull
 @NotNull TableKey key)

Description copied from interface: TableDataService

Forget all state for subsequent requests for a single table.

Specified by:

reset in interface TableDataService

Overrides:

reset in class AbstractTableDataService

Parameters:

key - TableKey to forget state for

makeTableLocationProvider

@NotNull
protected @NotNull TableLocationProvider makeTableLocationProvider(@NotNull
 @NotNull TableKey tableKey)

Specified by:

makeTableLocationProvider in class AbstractTableDataService

getImplementationName

public String getImplementationName()

Description copied from interface: NamedImplementation

Get a name for the implementing class. Useful for abstract classes that implement LogOutputAppendable or override toString.

The default implementation is correct, but not suitable for high-frequency usage.

Returns:

A name for the implementing class

toString

public String toString()

Overrides:

toString in class Object

describe

public String describe()

Description copied from interface: TableDataService

Get a detailed description string.

Returns:

A description string