Package com.tangosol.coherence.config.builder

Class ReadLocatorBuilder

java.lang.Object

com.tangosol.coherence.config.builder.DefaultBuilderCustomization<BiFunction<Ownership,PartitionedService,Member>>

com.tangosol.coherence.config.builder.ReadLocatorBuilder

All Implemented Interfaces:

BuilderCustomization<BiFunction<Ownership,PartitionedService,Member>>, ParameterizedBuilder<BiFunction<Ownership,PartitionedService,Member>>

public class ReadLocatorBuilder
extends DefaultBuilderCustomization<BiFunction<Ownership,PartitionedService,Member>>
implements ParameterizedBuilder<BiFunction<Ownership,PartitionedService,Member>>

The ReadLocatorBuilder class builds a BiFunction that given the current ownership of a partition and service will return a member to target reads against.

Since:

21.12

Author:

hr

Nested Class Summary

Nested classes/interfaces inherited from interface com.tangosol.coherence.config.builder.ParameterizedBuilder

ParameterizedBuilder.ReflectionSupport

Field Summary

Fields

Modifier and Type	Field	Description
static final BiFunction<Ownership,PartitionedService,Member>	CLOSEST	A BiFunction implementation that returns a member that is 'closest' to this member based on provided metadata (member, machine, rack, or site).
static final BiFunction<Ownership,PartitionedService,Member>	PRIMARY	A BiFunction implementation that returns the primary member of the ownership chain.
static final BiFunction<Ownership,PartitionedService,Member>	RANDOM	A BiFunction implementation that returns a random member of the ownership chain.
static final BiFunction<Ownership,PartitionedService,Member>	RANDOM_BACKUP	A BiFunction implementation that returns a random backup member of the ownership chain.

Constructor Summary

Constructors

Constructor	Description
ReadLocatorBuilder()

Method Summary

Modifier and Type	Method	Description
String	getMemberLocatorType(ParameterResolver resolver)	Return a string that represents the member to target reads against.
BiFunction<Ownership,PartitionedService,Member>	realize(ParameterResolver resolver, ClassLoader loader, ParameterList listParameters)	Realizes (creates if necessary) an instance of a object of type T, using the provided ParameterResolver to resolve values any referenced Parameters.
void	setMemberLocatorType(Expression<String> expr)	Set the string that represents the member to target reads against.

Methods inherited from class com.tangosol.coherence.config.builder.DefaultBuilderCustomization

getCustomBuilder, setCustomBuilder

Methods inherited from class java.lang.Object

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

Field Details

PRIMARY

public static final BiFunction<Ownership,PartitionedService,Member> PRIMARY

A BiFunction implementation that returns the primary member of the ownership chain.

RANDOM

public static final BiFunction<Ownership,PartitionedService,Member> RANDOM

A BiFunction implementation that returns a random member of the ownership chain.

RANDOM_BACKUP

public static final BiFunction<Ownership,PartitionedService,Member> RANDOM_BACKUP

A BiFunction implementation that returns a random backup member of the ownership chain.

CLOSEST

public static final BiFunction<Ownership,PartitionedService,Member> CLOSEST

A BiFunction implementation that returns a member that is 'closest' to this member based on provided metadata (member, machine, rack, or site).

Constructor Details

ReadLocatorBuilder

public ReadLocatorBuilder()

Method Details

getMemberLocatorType

public String getMemberLocatorType(ParameterResolver resolver)

Return a string that represents the member to target reads against. Valid values are:

• primary
• closest
• random
• random-backup

Parameters:

resolver - the ParameterResolver

Returns:

a string that represents the member to target reads against

setMemberLocatorType

@Injectable
public void setMemberLocatorType(Expression<String> expr)

Set the string that represents the member to target reads against. Valid values are:

• primary
• closest
• random
• random-backup

Parameters:

expr - the string that represents the member to target reads against

realize

public BiFunction<Ownership,PartitionedService,Member> realize(ParameterResolver resolver,
 ClassLoader loader,
 ParameterList listParameters)

Description copied from interface: ParameterizedBuilder

Realizes (creates if necessary) an instance of a object of type T, using the provided ParameterResolver to resolve values any referenced Parameters.

Specified by:

realize in interface ParameterizedBuilder<BiFunction<Ownership,PartitionedService,Member>>

Parameters:

resolver - the ParameterResolver for resolving named Parameters

loader - the ClassLoader for loading any necessary classes and if null the ClassLoader used to load the builder will be used instead

listParameters - an optional ParameterList (may be null) to be used for realizing the instance, eg: used as constructor parameters

Returns:

an instance of T