org.apache.brooklyn.core.resolve.entity

Class AbstractEntitySpecResolver

java.lang.Object

org.apache.brooklyn.core.resolve.entity.AbstractEntitySpecResolver

All Implemented Interfaces:

ManagementContextInjectable, EntitySpecResolver

Direct Known Subclasses:

CatalogEntitySpecResolver, ChefEntitySpecResolver, DelegatingEntitySpecResolver, HardcodedCatalogEntitySpecResolver, JavaEntitySpecResolver

public abstract class AbstractEntitySpecResolver
extends java.lang.Object
implements EntitySpecResolver

Constructor Summary

Constructors

Constructor and Description
AbstractEntitySpecResolver(java.lang.String name)

Method Summary

Modifier and Type	Method and Description
boolean	accepts(java.lang.String type, BrooklynClassLoadingContext loader)
java.lang.String	getName() Uniquely identifies the resolver, can be used to address the same resolver at a later point in time.
abstract EntitySpec<?>	resolve(java.lang.String type, BrooklynClassLoadingContext loader, java.util.Set<java.lang.String> encounteredTypes) Create a spec for the service type
void	setManagementContext(ManagementContext mgmt) Sets the ManagementContext reference.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractEntitySpecResolver

public AbstractEntitySpecResolver(java.lang.String name)

Method Detail

getName

public java.lang.String getName()

Description copied from interface: EntitySpecResolver

Uniquely identifies the resolver, can be used to address the same resolver at a later point in time. For implementations: this usually matches the service type prefix, but not required.

Specified by:

getName in interface EntitySpecResolver

accepts

public boolean accepts(java.lang.String type,
                       BrooklynClassLoadingContext loader)

Specified by:

accepts in interface EntitySpecResolver

Returns:

if the resolver can create a spec for the service type

setManagementContext

public void setManagementContext(ManagementContext mgmt)

Description copied from interface: ManagementContextInjectable

Sets the ManagementContext reference.

Specified by:

setManagementContext in interface ManagementContextInjectable

resolve

public abstract EntitySpec<?> resolve(java.lang.String type,
                                      BrooklynClassLoadingContext loader,
                                      java.util.Set<java.lang.String> encounteredTypes)

Description copied from interface: EntitySpecResolver

Create a spec for the service type

Specified by:

resolve in interface EntitySpecResolver

Parameters:

type - - the string representation which should be converted to an EntitySpec

loader - - use it to load any Java classes

encounteredTypes - - an immutable set of the items which are currently being resolved up the stack, used to prevent cycles. Implementations should not try to resolve the type if the symbolicName is already contained in here. When resolving a type add it to a copy of the list before passing the new instance down the stack. See CatalogEntitySpecResolver for example usage.

Returns:

The EntitySpec corresponding to the passed type argument, possibly pre-configured based on the information contained in type. Return null value to indicate that the implementation doesn't know how to convert type to an EntitySpec. Throw an exception if type looks like a supported value, but can't be loaded.