Package cz.o2.proxima.core.transaction

Class KeyAttributes

java.lang.Object

cz.o2.proxima.core.transaction.KeyAttributes

@Experimental
public class KeyAttributes
extends java.lang.Object

Method Summary

Modifier and Type	Method	Description
static KeyAttribute	ofAttributeDescriptor(EntityDescriptor entity, java.lang.String key, AttributeDescriptor<?> attributeDescriptor, long sequentialId)	Create KeyAttribute for given entity, key and attribute descriptor.
static KeyAttribute	ofAttributeDescriptor(EntityDescriptor entity, java.lang.String key, AttributeDescriptor<?> attributeDescriptor, long sequentialId, java.lang.String attributeSuffix)	Create KeyAttribute for given entity, key and attribute descriptor.
static KeyAttribute	ofMissingAttribute(EntityDescriptor entity, java.lang.String key, AttributeDescriptor<?> attributeDescriptor)	Create KeyAttribute for given entity, key and attribute descriptor.
static KeyAttribute	ofMissingAttribute(EntityDescriptor entity, java.lang.String key, AttributeDescriptor<?> attributeDescriptor, java.lang.String attributeSuffix)	Create KeyAttribute for given entity, key and attribute descriptor.
static KeyAttribute	ofStreamElement(StreamElement element)	Create a KeyAttribute for given StreamElement.
static <E extends StreamElement> java.util.List<KeyAttribute>	ofWildcardQueryElements(EntityDescriptor entity, java.lang.String key, AttributeDescriptor<?> wildcardAttribute, java.lang.Iterable<E> elements)	Create a list of KeyAttributes that represent a query for wildcard attribute and the returned

Methods inherited from class java.lang.Object

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

Method Detail

ofWildcardQueryElements

public static <E extends StreamElement> java.util.List<KeyAttribute> ofWildcardQueryElements(EntityDescriptor entity,
                                                                                             java.lang.String key,
                                                                                             AttributeDescriptor<?> wildcardAttribute,
                                                                                             java.lang.Iterable<E> elements)

Create a list of KeyAttributes that represent a query for wildcard attribute and the returned

Type Parameters:

E - type parameter

Parameters:

entity - the entity descriptor

key - the key of the entity

wildcardAttribute - the descriptor of wildcard attribute

elements - the elements returned by query

Returns:

ofAttributeDescriptor

public static KeyAttribute ofAttributeDescriptor(EntityDescriptor entity,
                                                 java.lang.String key,
                                                 AttributeDescriptor<?> attributeDescriptor,
                                                 long sequentialId)

Create KeyAttribute for given entity, key and attribute descriptor. This describes either all wildcard attributes of that key or a single regular attribute.

Parameters:

entity - the entity descriptor

key - the entity key

attributeDescriptor - descriptor of wildcard or regular attribute

sequentialId - sequence ID of the read attribute

ofAttributeDescriptor

public static KeyAttribute ofAttributeDescriptor(EntityDescriptor entity,
                                                 java.lang.String key,
                                                 AttributeDescriptor<?> attributeDescriptor,
                                                 long sequentialId,
                                                 @Nullable
                                                 java.lang.String attributeSuffix)

Create KeyAttribute for given entity, key and attribute descriptor. This describes either all wildcard attributes of that key or a single regular attribute.

Parameters:

entity - the entity descriptor

key - the entity key

attributeDescriptor - descriptor of wildcard or regular attribute

sequentialId - sequence ID of the read attribute

attributeSuffix - a specific attribute suffix when attributeDescriptor is wildcard attribute

ofMissingAttribute

public static KeyAttribute ofMissingAttribute(EntityDescriptor entity,
                                              java.lang.String key,
                                              AttributeDescriptor<?> attributeDescriptor)

Create KeyAttribute for given entity, key and attribute descriptor. This represents a missing value, that is a value that was either not-yet written or already deleted.

Parameters:

entity - the entity descriptor

key - the entity key

attributeDescriptor - descriptor of wildcard or regular attribute

ofMissingAttribute

public static KeyAttribute ofMissingAttribute(EntityDescriptor entity,
                                              java.lang.String key,
                                              AttributeDescriptor<?> attributeDescriptor,
                                              java.lang.String attributeSuffix)

Create KeyAttribute for given entity, key and attribute descriptor. This represents a missing value, that is a value that was either not-yet written or already deleted.

Parameters:

entity - the entity descriptor

key - the entity key

attributeDescriptor - descriptor of wildcard or regular attribute

attributeSuffix - a specific attribute suffix when attributeDescriptor is wildcard attribute

ofStreamElement

public static KeyAttribute ofStreamElement(StreamElement element)

Create a KeyAttribute for given StreamElement.

Parameters:

element - the StreamElement that should be part of the transaction