org.apache.camel.model
Class ProcessorDefinitionHelper

java.lang.Object
  org.apache.camel.model.ProcessorDefinitionHelper

public final class ProcessorDefinitionHelper
extends Object

Helper class for ProcessorDefinition and the other model classes.

Method Summary

static <T> Iterator<T>	filterTypeInOutputs(List<ProcessorDefinition<?>> outputs, Class<T> type) Looks for the given type in the list of outputs and recurring all the children as well.
static <T> T	findFirstTypeInOutputs(List<ProcessorDefinition<?>> outputs, Class<T> type) Looks for the given type in the list of outputs and recurring all the children as well.
static ExecutorService	getConfiguredExecutorService(RouteContext routeContext, String name, ExecutorServiceAwareDefinition<?> definition, boolean useDefault) Will lookup and get the configured ExecutorService from the given definition.
static ScheduledExecutorService	getConfiguredScheduledExecutorService(RouteContext routeContext, String name, ExecutorServiceAwareDefinition<?> definition, boolean useDefault) Will lookup and get the configured ScheduledExecutorService from the given definition.
static RouteDefinition	getRoute(ProcessorDefinition<?> node) Gets the route definition the given node belongs to.
static boolean	hasOutputs(List<ProcessorDefinition<?>> outputs, boolean excludeAbstract) Is there any outputs in the given list.
static boolean	isFirstChildOfType(Class<?> parentType, ProcessorDefinition<?> node) Is the given child the first in the outputs from the parent?
static boolean	isParentOfType(Class<?> parentType, ProcessorDefinition<?> node, boolean recursive) Is the given node parent(s) of the given type
static ExecutorService	lookupExecutorServiceRef(RouteContext routeContext, String name, Object source, String executorServiceRef) Will lookup in Registry for a ExecutorService registered with the given executorServiceRef name.
static ScheduledExecutorService	lookupScheduledExecutorServiceRef(RouteContext routeContext, String name, Object source, String executorServiceRef) Will lookup in Registry for a ScheduledExecutorService registered with the given executorServiceRef name.
static boolean	willCreateNewThreadPool(RouteContext routeContext, ExecutorServiceAwareDefinition<?> definition, boolean useDefault) Determines whether a new thread pool will be created or not.

Methods inherited from class java.lang.Object

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

Method Detail

filterTypeInOutputs

public static <T> Iterator<T> filterTypeInOutputs(List<ProcessorDefinition<?>> outputs,
                                                  Class<T> type)

Looks for the given type in the list of outputs and recurring all the children as well.

Parameters:

outputs - list of outputs, can be null or empty.

type - the type to look for

Returns:

the found definitions, or null if not found

findFirstTypeInOutputs

public static <T> T findFirstTypeInOutputs(List<ProcessorDefinition<?>> outputs,
                                           Class<T> type)

Looks for the given type in the list of outputs and recurring all the children as well. Will stop at first found and return it.

Parameters:

outputs - list of outputs, can be null or empty.

type - the type to look for

Returns:

the first found type, or null if not found

isFirstChildOfType

public static boolean isFirstChildOfType(Class<?> parentType,
                                         ProcessorDefinition<?> node)

Is the given child the first in the outputs from the parent?

Parameters:

parentType - the type the parent must be

node - the node

Returns:

true if first child, false otherwise

isParentOfType

public static boolean isParentOfType(Class<?> parentType,
                                     ProcessorDefinition<?> node,
                                     boolean recursive)

Is the given node parent(s) of the given type

Parameters:

parentType - the parent type

node - the current node

recursive - whether or not to check grand parent(s) as well

Returns:

true if parent(s) is of given type, false otherwise

getRoute

public static RouteDefinition getRoute(ProcessorDefinition<?> node)

Gets the route definition the given node belongs to.

Parameters:

node - the node

Returns:

the route, or null if not possible to find

hasOutputs

public static boolean hasOutputs(List<ProcessorDefinition<?>> outputs,
                                 boolean excludeAbstract)

Is there any outputs in the given list.

Is used for check if the route output has any real outputs (non abstracts)

Parameters:

outputs - the outputs

excludeAbstract - whether or not to exclude abstract outputs (e.g. skip onException etc.)

Returns:

true if has outputs, otherwise false is returned

willCreateNewThreadPool

public static boolean willCreateNewThreadPool(RouteContext routeContext,
                                              ExecutorServiceAwareDefinition<?> definition,
                                              boolean useDefault)

Determines whether a new thread pool will be created or not.

This is used to know if a new thread pool will be created, and therefore is not shared by others, and therefore exclusive to the definition.

Parameters:

routeContext - the route context

definition - the node definition which may leverage executor service.

useDefault - whether to fallback and use a default thread pool, if no explicit configured

Returns:

true if a new thread pool will be created, false if not

See Also:

getConfiguredExecutorService(org.apache.camel.spi.RouteContext, String, ExecutorServiceAwareDefinition, boolean)

lookupExecutorServiceRef

public static ExecutorService lookupExecutorServiceRef(RouteContext routeContext,
                                                       String name,
                                                       Object source,
                                                       String executorServiceRef)

Will lookup in Registry for a ExecutorService registered with the given executorServiceRef name.

This method will lookup for configured thread pool in the following order

• from the Registry if found
• from the known list of ThreadPoolProfile(s).
• if none found, then null is returned.

Parameters:

routeContext - the route context

name - name which is appended to the thread name, when the ExecutorService is created based on a ThreadPoolProfile.

source - the source to use the thread pool

executorServiceRef - reference name of the thread pool

Returns:

the executor service, or null if none was found.

getConfiguredExecutorService

public static ExecutorService getConfiguredExecutorService(RouteContext routeContext,
                                                           String name,
                                                           ExecutorServiceAwareDefinition<?> definition,
                                                           boolean useDefault)
                                                    throws IllegalArgumentException

Will lookup and get the configured ExecutorService from the given definition.

This method will lookup for configured thread pool in the following order

• from the definition if any explicit configured executor service.
• from the Registry if found
• from the known list of ThreadPoolProfile(s).
• if none found, then null is returned.

The various ExecutorServiceAwareDefinition should use this helper method to ensure they support configured executor services in the same coherent way.

Parameters:

routeContext - the route context

name - name which is appended to the thread name, when the ExecutorService is created based on a ThreadPoolProfile.

definition - the node definition which may leverage executor service.

useDefault - whether to fallback and use a default thread pool, if no explicit configured

Returns:

the configured executor service, or null if none was configured.

Throws:

IllegalArgumentException - is thrown if lookup of executor service in Registry was not found

lookupScheduledExecutorServiceRef

public static ScheduledExecutorService lookupScheduledExecutorServiceRef(RouteContext routeContext,
                                                                         String name,
                                                                         Object source,
                                                                         String executorServiceRef)

Will lookup in Registry for a ScheduledExecutorService registered with the given executorServiceRef name.

This method will lookup for configured thread pool in the following order

• from the Registry if found
• from the known list of ThreadPoolProfile(s).
• if none found, then null is returned.

Parameters:

routeContext - the route context

name - name which is appended to the thread name, when the ExecutorService is created based on a ThreadPoolProfile.

source - the source to use the thread pool

executorServiceRef - reference name of the thread pool

Returns:

the executor service, or null if none was found.

getConfiguredScheduledExecutorService

public static ScheduledExecutorService getConfiguredScheduledExecutorService(RouteContext routeContext,
                                                                             String name,
                                                                             ExecutorServiceAwareDefinition<?> definition,
                                                                             boolean useDefault)
                                                                      throws IllegalArgumentException

Will lookup and get the configured ScheduledExecutorService from the given definition.

This method will lookup for configured thread pool in the following order

• from the definition if any explicit configured executor service.
• from the Registry if found
• from the known list of ThreadPoolProfile(s).
• if none found, then null is returned.

The various ExecutorServiceAwareDefinition should use this helper method to ensure they support configured executor services in the same coherent way.

Parameters:

routeContext - the rout context

name - name which is appended to the thread name, when the ExecutorService is created based on a ThreadPoolProfile.

definition - the node definition which may leverage executor service.

useDefault - whether to fallback and use a default thread pool, if no explicit configured

Returns:

the configured executor service, or null if none was configured.

Throws:

IllegalArgumentException - is thrown if the found instance is not a ScheduledExecutorService type, or lookup of executor service in Registry was not found