org.grouplens.grapht.solver

Class InjectionContext

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

org.grouplens.grapht.util.AbstractChain<org.apache.commons.lang3.tuple.Pair<Satisfaction,InjectionPoint>>

org.grouplens.grapht.solver.InjectionContext

All Implemented Interfaces:

Serializable, Iterable<org.apache.commons.lang3.tuple.Pair<Satisfaction,InjectionPoint>>, Collection<org.apache.commons.lang3.tuple.Pair<Satisfaction,InjectionPoint>>, List<org.apache.commons.lang3.tuple.Pair<Satisfaction,InjectionPoint>>

public class InjectionContext
extends AbstractChain<org.apache.commons.lang3.tuple.Pair<Satisfaction,InjectionPoint>>

InjectionContext represents the current path through the dependency graph to the desire being resolved by BindingFunction.bind(InjectionContext, DesireChain). The InjectionContext is most significantly represented as a list of satisfactions and the associated injection point attributes. This list represents the "type path" from the root node in the graph to the previously resolved satisfaction.

Author:

GroupLens Research

See Also:

Serialized Form

Field Summary

Fields inherited from class org.grouplens.grapht.util.AbstractChain

length, previous, tailValue

Fields inherited from class java.util.AbstractList

modCount

Method Summary

Methods

Modifier and Type	Method and Description
InjectionContext	extend(Satisfaction satisfaction, InjectionPoint ip) Create a new context that is updated to have the satisfaction and attribute pushed to the end of its type path.
InjectionContext	getLeading() Get everything except the last element of this context.
static InjectionContext	singleton(Satisfaction satisfaction) Construct a singleton injection context with no attributes.
static InjectionContext	singleton(Satisfaction satisfaction, InjectionPoint ip) Construct a singleton injection context.

Methods inherited from class org.grouplens.grapht.util.AbstractChain

equals, get, getTailValue, hashCode, iterator, reverse, reverseIterator, size

Methods inherited from class java.util.AbstractList

add, add, addAll, clear, indexOf, lastIndexOf, listIterator, listIterator, remove, removeRange, set, subList

Methods inherited from class java.util.AbstractCollection

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.List

addAll, contains, containsAll, isEmpty, remove, removeAll, retainAll, toArray, toArray

Method Detail

singleton

public static InjectionContext singleton(Satisfaction satisfaction,
                         InjectionPoint ip)

Construct a singleton injection context.

Parameters:

satisfaction - The satisfaction.

ip - The injection point.

Returns:

The injection context.

singleton

public static InjectionContext singleton(Satisfaction satisfaction)

Construct a singleton injection context with no attributes.

Parameters:

satisfaction - The satisfaction.

Returns:

The injection context.

extend

public InjectionContext extend(Satisfaction satisfaction,
                      InjectionPoint ip)

Create a new context that is updated to have the satisfaction and attribute pushed to the end of its type path. The value cache for the new context will be empty.

Parameters:

satisfaction - The next satisfaction in the dependency graph

ip - The injection point receiving the satisfaction

Returns:

A new context with updated type path

getLeading

@Nullable
public InjectionContext getLeading()

Get everything except the last element of this context.

Returns:

Everything except the last element of this context, or null if the context is a singleton.