Package org.apache.dubbo.common.extension

Interface LoadingStrategy

All Superinterfaces:

Comparable<Prioritized>, Prioritized

All Known Implementing Classes:

DubboInternalLoadingStrategy, DubboLoadingStrategy, ServicesLoadingStrategy

public interface LoadingStrategy
extends Prioritized

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ALL	when spi is loaded by dubbo framework classloader only, it indicates all LoadingStrategy should load this spi

Fields inherited from interface org.apache.dubbo.common.lang.Prioritized

COMPARATOR, MAX_PRIORITY, MIN_PRIORITY, NORMAL_PRIORITY

Method Summary

Modifier and Type	Method	Description
String	directory()
default String[]	excludedPackages()
default String	getName()
default String[]	includedPackages()	To restrict some class that should not be loaded from `org.apache.dubbo` package type SPI class.
default String[]	includedPackagesInCompatibleType()	To restrict some class that should not be loaded from `org.alibaba.dubbo`(for compatible purpose) package type SPI class.
default String[]	onlyExtensionClassLoaderPackages()	To restrict some class that should load from Dubbo's ClassLoader.
default boolean	overridden()	Indicates current LoadingStrategy supports overriding other lower prioritized instances or not.
default boolean	preferExtensionClassLoader()

Methods inherited from interface org.apache.dubbo.common.lang.Prioritized

compareTo, getPriority

Field Details

ALL

static final String ALL

when spi is loaded by dubbo framework classloader only, it indicates all LoadingStrategy should load this spi

See Also:

• Constant Field Values

Method Details

directory

String directory()

preferExtensionClassLoader

default boolean preferExtensionClassLoader()

excludedPackages

default String[] excludedPackages()

includedPackages

default String[] includedPackages()

To restrict some class that should not be loaded from `org.apache.dubbo` package type SPI class. For example, we can restrict the implementation class which package is `org.xxx.xxx` can be loaded as SPI implementation.

Returns:

packages can be loaded in `org.apache.dubbo`'s SPI

includedPackagesInCompatibleType

default String[] includedPackagesInCompatibleType()

To restrict some class that should not be loaded from `org.alibaba.dubbo`(for compatible purpose) package type SPI class. For example, we can restrict the implementation class which package is `org.xxx.xxx` can be loaded as SPI implementation

Returns:

packages can be loaded in `org.alibaba.dubbo`'s SPI

onlyExtensionClassLoaderPackages

default String[] onlyExtensionClassLoaderPackages()

To restrict some class that should load from Dubbo's ClassLoader. For example, we can restrict the class declaration in `org.apache.dubbo` package should be loaded from Dubbo's ClassLoader and users cannot declare these classes.

Returns:

class packages should load

Since:

3.0.4

overridden

default boolean overridden()

Indicates current LoadingStrategy supports overriding other lower prioritized instances or not.

Returns:

if supports, return true, or false

Since:

2.7.7

getName

default String getName()