org.apache.ignite.internal.util.gridify

Class GridifyUtils

java.lang.Object

org.apache.ignite.internal.util.gridify.GridifyUtils

public final class GridifyUtils
extends Object

Utility class with common methods used in gridify annotations.

Field Summary

Fields

Modifier and Type	Field and Description
static int	UNKNOWN_SIZE

Method Summary

Modifier and Type	Method and Description
static @Nullable Object	collectionToParameter(Class<?> paramCls, Collection data) Converts Collection back to object applied for method.
static Collection<String>	getAllowedMethodParameterTypes() Allowed method return types.
static List<String>	getAllowedMethodReturnTypes() Allowed method return types.
static Iterator<?>	getIterator(Object obj) Gets iterator or create new for container object with elements with unknown type.
static int	getLength(Object obj) Gets length of elements in container object with unknown type.
static boolean	isMethodParameterTypeAllowed(Class<?> cls) Check if method parameter type type can be used for GridifySetToSet or GridifySetToValue annotations.
static boolean	isMethodParameterTypeAnnotated(Annotation[] anns) Check is method parameter annotated with GridifyInput.
static boolean	isMethodReturnTypeValid(Class<?> cls) Check if method return type can be used for GridifySetToSet or GridifySetToValue annotations.
static @Nullable Collection	parameterToCollection(Object arg) Converts parameter object to Collection.

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN_SIZE

public static final int UNKNOWN_SIZE

See Also:

Constant Field Values

Method Detail

getLength

public static int getLength(Object obj)

Gets length of elements in container object with unknown type. There is no ability to get size of elements for some object types and method returns UNKNOWN_SIZE value.

Parameters:

obj - Container object with elements.

Returns:

Elements size of UNKNOWN_SIZE.

getIterator

public static Iterator<?> getIterator(Object obj)

Gets iterator or create new for container object with elements with unknown type.

Parameters:

obj - Container object with elements.

Returns:

Iterator.

isMethodReturnTypeValid

public static boolean isMethodReturnTypeValid(Class<?> cls)

Check if method return type can be used for GridifySetToSet or GridifySetToValue annotations.

Parameters:

cls - Method return type class to check.

Returns:

true if method return type is valid.

isMethodParameterTypeAllowed

public static boolean isMethodParameterTypeAllowed(Class<?> cls)

Check if method parameter type type can be used for GridifySetToSet or GridifySetToValue annotations.

Parameters:

cls - Method parameter to check.

Returns:

true if method parameter type is valid.

isMethodParameterTypeAnnotated

public static boolean isMethodParameterTypeAnnotated(Annotation[] anns)

Check is method parameter annotated with GridifyInput.

Parameters:

anns - Annotations for method parameters.

Returns:

true if annotation found.

getAllowedMethodReturnTypes

public static List<String> getAllowedMethodReturnTypes()

Allowed method return types.

Returns:

List of class names or text comments.

getAllowedMethodParameterTypes

public static Collection<String> getAllowedMethodParameterTypes()

Allowed method return types.

Returns:

List of class names or text comments.

parameterToCollection

@Nullable
public static @Nullable Collection parameterToCollection(Object arg)

Converts parameter object to Collection.

Parameters:

arg - Method parameter object.

Returns:

Collection of parameters or null for unknown object.

collectionToParameter

@Nullable
public static @Nullable Object collectionToParameter(Class<?> paramCls,
                                                               Collection data)

Converts Collection back to object applied for method.

Parameters:

paramCls - Method parameter type.

data - Collection of data elements.

Returns:

Object applied for method.