stream.runtime

Class DependencyInjection

java.lang.Object

stream.runtime.DependencyInjection

public class DependencyInjection
extends Object

Author:

Christian Bockermann

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static org.slf4j.Logger	log
(package private) static boolean	PARTITIONED_STREAMS
(package private) List<Reference>	refs
(package private) Map<String,List<String>>	remapping

Constructor Summary

Constructors

Constructor and Description
DependencyInjection()

Method Summary

Modifier and Type	Method and Description
void	add(Reference ref)
void	addAll(Collection<Reference> refs)
protected String	getNextPartition(String streamId)
protected boolean	hasPartitions(String streamId)
static Class<? extends Service>	hasServiceSetter(String name, Object o)
static Class<? extends Sink>	hasSinkSetter(String name, Object o)
private boolean	inject(ComputeGraph.ServiceRef ref, ComputeGraph graph, NamingService namingService)
private boolean	inject(ComputeGraph.SinkRef ref, ComputeGraph graph)
private boolean	inject(ComputeGraph.SourceRef ref, ComputeGraph graph)
private boolean	inject(Reference ref, ComputeGraph graph, NamingService namingService)
void	injectDependencies(ComputeGraph graph, NamingService namingService)
boolean	injectResolvedReferences(Object o, String property, Object[] resolvedRefs)
static boolean	isArraySetter(Method m, Class<?> type)
static boolean	isServiceImplementation(Class<?> clazz) This method checks whether the given class implements the Service interface.
static boolean	isServiceSetter(Method m) This method checks whether the provided method is a service setter, i.e.
static boolean	isSetter(Method m, Class<?> type)
static boolean	isSinkArraySetter(Method m)
static boolean	isSinkSetter(Method m)
static boolean	isSourceSetter(Method m)

Methods inherited from class java.lang.Object

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

Field Detail

log

static org.slf4j.Logger log

PARTITIONED_STREAMS

static final boolean PARTITIONED_STREAMS

refs

final List<Reference> refs

remapping

final Map<String,List<String>> remapping

Constructor Detail

DependencyInjection

public DependencyInjection()

Method Detail

add

public void add(Reference ref)

addAll

public void addAll(Collection<Reference> refs)

hasPartitions

protected boolean hasPartitions(String streamId)

getNextPartition

protected String getNextPartition(String streamId)

injectDependencies

public void injectDependencies(ComputeGraph graph,
                               NamingService namingService)
                        throws Exception

Throws:

Exception

inject

private boolean inject(Reference ref,
                       ComputeGraph graph,
                       NamingService namingService)
                throws Exception

Throws:

Exception

inject

private boolean inject(ComputeGraph.SinkRef ref,
                       ComputeGraph graph)
                throws Exception

Throws:

Exception

inject

private boolean inject(ComputeGraph.SourceRef ref,
                       ComputeGraph graph)
                throws Exception

Throws:

Exception

inject

private boolean inject(ComputeGraph.ServiceRef ref,
                       ComputeGraph graph,
                       NamingService namingService)
                throws Exception

Throws:

Exception

injectResolvedReferences

public boolean injectResolvedReferences(Object o,
                                        String property,
                                        Object[] resolvedRefs)
                                 throws Exception

Throws:

Exception

hasSinkSetter

public static Class<? extends Sink> hasSinkSetter(String name,
                                                  Object o)

hasServiceSetter

public static Class<? extends Service> hasServiceSetter(String name,
                                                        Object o)

isServiceSetter

public static boolean isServiceSetter(Method m)

This method checks whether the provided method is a service setter, i.e. it is a setter method to inject service references into the object. This requires the method to provide the following characteristics:

1. Its names starts with set and provides additional characters, i.e. set alone is not enough.
2. It takes a single parameter, which is a service implementation

Parameters:

m -

Returns:

isSourceSetter

public static boolean isSourceSetter(Method m)

isSinkSetter

public static boolean isSinkSetter(Method m)

isSinkArraySetter

public static boolean isSinkArraySetter(Method m)

isSetter

public static boolean isSetter(Method m,
                               Class<?> type)

isArraySetter

public static boolean isArraySetter(Method m,
                                    Class<?> type)

isServiceImplementation

public static boolean isServiceImplementation(Class<?> clazz)

This method checks whether the given class implements the Service interface.

Parameters:

clazz -

Returns: