Service.ServiceFactory (Apache TinkerPop 3.7.2 API)

All Superinterfaces:

AutoCloseable

All Known Subinterfaces:

Service.DirectoryService<I>

All Known Implementing Classes:

ServiceRegistry, TinkerDegreeCentralityFactory, TinkerServiceRegistry, TinkerServiceRegistry.LambdaServiceFactory, TinkerServiceRegistry.TinkerServiceFactory, TinkerTextSearchFactory

Enclosing interface:

Service<I,R>
```
public static interface Service.ServiceFactory<I,R>
extends AutoCloseable
```
The service factory creates instances of callable services based on the desired execution type. Some services (e.g. full text search) might be run at the start of a traversal or mid-traversal. The service factory will create an instance based on how the service will be executed. This leaves open the possibility for a single named service to support multiple execution modes (streaming vs. chunked vs. all-at-once) and dynamically choose one based on the location in the traversal of the service call and the static parameters supplied (this allow for dynamic chunk size).

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`close()`	Service factories can implement cleanup/shutdown procedures here.
`Service<I,R>`	`createService(boolean isStart, Map params)`	Create a Service call instance.
`default Map`	`describeParams()`	Return a description of any service call parameters.
`String`	`getName()`	Get the name of this service.
`default Set<TraverserRequirement>`	`getRequirements(Service.Type type)`	Return any `TraverserRequirement`s necessary for this service call for the supplied execution `Service.Type`.
`default Map<Service.Type,Set<TraverserRequirement>>`	`getRequirementsByType()`	Return any `TraverserRequirement`s necessary for this service call for each execution `Service.Type` it supports.
`Set<Service.Type>`	`getSupportedTypes()`	Get the execution modes that it supports.

- Method Detail
  - getName
```
String getName()
```
    Get the name of this service.
  - getSupportedTypes
```
Set<Service.Type> getSupportedTypes()
```
    Get the execution modes that it supports.
  - describeParams
```
default Map describeParams()
```
    Return a description of any service call parameters.
  - getRequirementsByType
```
default Map<Service.Type,Set<TraverserRequirement>> getRequirementsByType()
```
    Return any TraverserRequirements necessary for this service call for each execution Service.Type it supports.
  - getRequirements
```
default Set<TraverserRequirement> getRequirements(Service.Type type)
```
    Return any TraverserRequirements necessary for this service call for the supplied execution Service.Type.
  - createService
```
Service<I,R> createService(boolean isStart,
                                 Map params)
```
    Create a Service call instance.
    
    Parameters:
    
    isStart - true if the call is being used to start a traversal
    
    params - the static params provided to service call (if any)
    
    Returns:
    
    the service call instance
  - close
```
default void close()
```
    Service factories can implement cleanup/shutdown procedures here.
    
    Specified by:
    
    close in interface AutoCloseable