# NamedDomainObjectCollection

interface NamedDomainObjectCollection<T> : DomainObjectCollection<T> (source)

A `NamedDomainObjectCollection` represents a collection of objects that have an inherent, constant, name.

Objects to be added to a named domain object collection must implement `equals()` in such a way that no two objects with different names are considered equal. That is, all equality tests must consider the name as an equality key. Behavior is undefined if two objects with different names are considered equal by their `equals()` implementation.

All implementations must guarantee that all elements in the collection are uniquely named. That is, an attempt to add an object with a name equal to the name of any existing object in the collection will fail. Implementations may choose to simply return false from `add(T)` or to throw an exception.

Objects in the collection are accessible as read-only properties, using the name of the object as the property name. For example (assuming the 'name' property provides the object name):

    books.add(new Book(name: "gradle", title: null))
    books.gradle.title = "Gradle in Action"

Content copied to clipboard

A dynamic method is added for each object which takes a configuration closure. This is equivalent to calling getByName. For example:

    books.add(new Book(name: "gradle", title: null))
    books.gradle {
      title = "Gradle in Action"
    }

Content copied to clipboard

You can also use the `[]` operator to access the objects of a collection by name. For example:

    books.add(new Book(name: "gradle", title: null))
    books['gradle'].title = "Gradle in Action"

Content copied to clipboard

Rule objects can be attached to the collection in order to respond to requests for objects by name where no object with name exists in the collection. This mechanism can be used to create objects on demand. For example:

    books.addRule('create any') { books.add(new Book(name: "gradle", title: null)) }
    books.gradle.name == "gradle"

Content copied to clipboard

#### Parameters

<T>

The type of objects in this collection.

#### Inheritors

NamedDomainObjectList
NamedDomainObjectSet

## Functions

add
Link copied to clipboard
abstract fun add(e: T): Boolean
Adds an object to the collection, if there is no existing object in the collection with the same name.
addAll
Link copied to clipboard
abstract fun addAll(c: Collection<out T>): Boolean
Adds any of the given objects to the collection that do not have the same name as any existing element.
addAllLater
Link copied to clipboard
abstract fun addAllLater(provider: Provider<out Iterable<T>>)
addLater
Link copied to clipboard
abstract fun addLater(provider: Provider<out T>)
addRule
Link copied to clipboard
abstract fun addRule(rule: Rule): Rule
abstract fun addRule(description: String, ruleAction: Closure): Rule
abstract fun addRule(description: String, ruleAction: Action<String>): Rule
Adds a rule to this collection.
all
Link copied to clipboard
abstract fun all(action: Action<in T>)
clear
Link copied to clipboard
abstract fun clear()
configureEach
Link copied to clipboard
abstract fun configureEach(action: Action<in T>)
contains
Link copied to clipboard
abstract fun contains(p: Any): Boolean
containsAll
Link copied to clipboard
abstract fun containsAll(p: Collection<out Any>): Boolean
disallowChanges
Link copied to clipboard
open fun disallowChanges()
equals
Link copied to clipboard
abstract fun equals(p: Any): Boolean
findAll
Link copied to clipboard
abstract fun findAll(spec: Closure): Collection<T>
findByName
Link copied to clipboard
@Nullable
abstract fun findByName(name: String): @Nullable T
Locates an object by name, returning null if there is no such object.
forEach
Link copied to clipboard
open fun forEach(p: Consumer<in T>)
get
Link copied to clipboard
operator fun <T : Any> NamedDomainObjectCollection<T>.get(name: String): T

Locates an object by name, failing if there is no such object.

getAsMap
Link copied to clipboard
abstract fun getAsMap(): SortedMap<String, T>
Returns the objects in this collection, as a map from object name to object instance.
getAt
Link copied to clipboard
abstract fun getAt(name: String): T
Locates an object by name, failing if there is no such object.
getByName
Link copied to clipboard
abstract fun getByName(name: String): T
abstract fun getByName(name: String, configureClosure: Closure): T
abstract fun getByName(name: String, configureAction: Action<in T>): T
Locates an object by name, failing if there is no such object.
getByName
Link copied to clipboard
inline fun <T : Any> NamedDomainObjectCollection<out Any>.getByName(name: String): <Error class: unknown class>

Locates an object by name and casts it to the expected type T.

inline fun <T : Any> NamedDomainObjectCollection<out Any>.getByName(name: String, configure: T.() -> Unit): <Error class: unknown class>

Locates an object by name and casts it to the expected type T then configures it.

fun <T : Any> NamedDomainObjectCollection<out Any>.getByName(name: String, type: KClass<T>): T

Locates an object by name and casts it to the expected type.

fun <T : Any> NamedDomainObjectCollection<out Any>.getByName(name: String, type: KClass<T>, configure: T.() -> Unit): T

Locates an object by name and casts it to the expected type then configures it.

getCollectionSchema
Link copied to clipboard
@Internal
abstract fun getCollectionSchema(): NamedDomainObjectCollectionSchema
Provides access to the schema of all created or registered named domain objects in this collection.
getNamer
Link copied to clipboard
abstract fun getNamer(): Namer<T>
An object that represents the naming strategy used to name objects of this collection.
getNames
Link copied to clipboard
abstract fun getNames(): SortedSet<String>
Returns the names of the objects in this collection as a Set of Strings.
getRules
Link copied to clipboard
abstract fun getRules(): List<Rule>
Returns the rules used by this collection.
hashCode
Link copied to clipboard
abstract fun hashCode(): Int
isEmpty
Link copied to clipboard
abstract fun isEmpty(): Boolean
iterator
Link copied to clipboard
abstract fun iterator(): Iterator<T>
abstract fun iterator(): Iterator<E>
matching
Link copied to clipboard
abstract fun matching(spec: Closure): NamedDomainObjectCollection<T>
abstract fun matching(spec: Spec<in T>): NamedDomainObjectCollection<T>
named
Link copied to clipboard
abstract fun named(name: String): NamedDomainObjectProvider<T>
abstract fun named(name: String, configurationAction: Action<in T>): NamedDomainObjectProvider<T>
Locates a object by name, failing if there is no such object.
@Incubating
open fun named(nameFilter: Spec<String>): NamedDomainObjectCollection<T>
Returns a collection containing the objects with names matching the provided filter.
abstract fun <S : T?> named(name: String, type: Class<S>): NamedDomainObjectProvider<S>
abstract fun <S : T?> named(name: String, type: Class<S>, configurationAction: Action<in S>): NamedDomainObjectProvider<S>
Locates a object by name and type, failing if there is no such object.
named
Link copied to clipboard
inline fun <T : Any> NamedDomainObjectCollection<out Any>.named(name: String): NamedDomainObjectProvider<T>
fun <T : Any> NamedDomainObjectCollection<out Any>.named(name: String, type: KClass<T>): NamedDomainObjectProvider<T>

Locates an object by name and type, without triggering its creation or configuration, failing if there is no such object.

inline fun <S : T, T : Any> NamedDomainObjectCollection<T>.named(name: String, type: KClass<S>): NamedDomainObjectProvider<S>
inline fun <S : T, T : Any> NamedDomainObjectCollection<T>.named(name: String, type: KClass<S>, configurationAction: Action<in S>): NamedDomainObjectProvider<S>

Kotlin extension function taking kotlin.reflect.KClass for org.gradle.api.NamedDomainObjectCollection.named.

inline fun <T : Any> NamedDomainObjectCollection<out Any>.named(name: String, noinline configuration: T.() -> Unit): NamedDomainObjectProvider<T>
fun <T : Any> NamedDomainObjectCollection<out Any>.named(name: String, type: KClass<T>, configuration: T.() -> Unit): NamedDomainObjectProvider<T>

Configures an object by name and type, without triggering its creation or configuration, failing if there is no such object.

parallelStream
Link copied to clipboard
open fun parallelStream(): Stream<E>
provideDelegate
Link copied to clipboard
operator fun <T : Any> NamedDomainObjectCollection<T>.provideDelegate(thisRef: Any?, property: KProperty<*>): NamedDomainObjectProvider<T>

Allows a NamedDomainObjectCollection to be used as a property delegate.

remove
Link copied to clipboard
abstract fun remove(p: Any): Boolean
removeAll
Link copied to clipboard
abstract fun removeAll(p: Collection<out Any>): Boolean
removeIf
Link copied to clipboard
open fun removeIf(p: Predicate<in E>): Boolean
retainAll
Link copied to clipboard
abstract fun retainAll(p: Collection<out Any>): Boolean
size
Link copied to clipboard
abstract fun size(): Int
spliterator
Link copied to clipboard
open fun spliterator(): Spliterator<T>
open fun spliterator(): Spliterator<E>
stream
Link copied to clipboard
open fun stream(): Stream<E>
toArray
Link copied to clipboard
abstract fun toArray(): Array<Any>
abstract fun <T> toArray(p: Array<T>): Array<T>
whenObjectAdded
Link copied to clipboard
abstract fun whenObjectAdded(action: Closure)
abstract fun whenObjectAdded(action: Action<in T>): Action<in T>
whenObjectRemoved
Link copied to clipboard
abstract fun whenObjectRemoved(action: Closure)
abstract fun whenObjectRemoved(action: Action<in T>): Action<in T>
withType
Link copied to clipboard
abstract fun <S : T?> withType(type: Class<S>): NamedDomainObjectCollection<S>
withType
Link copied to clipboard
inline fun <S : Any> DomainObjectCollection<in S>.withType(): <Error class: unknown class>
inline fun <S : Any> NamedDomainObjectCollection<in S>.withType(): NamedDomainObjectCollection<S>

Returns a collection containing the objects in this collection of the given type. The returned collection is live, so that when matching objects are later added to this collection, they are also visible in the filtered collection.

inline fun <S : Any> DomainObjectCollection<in S>.withType(noinline configuration: S.() -> Unit): DomainObjectCollection<S>

Returns a collection containing the objects in this collection of the given type. Equivalent to calling `withType(type).all(configureAction)`.

inline fun <S : T, T : Any> DomainObjectCollection<T>.withType(type: KClass<S>): DomainObjectCollection<S>
inline fun <S : T, T : Any> DomainObjectCollection<T>.withType(type: KClass<S>, configureAction: Action<in S>): DomainObjectCollection<S>

Kotlin extension function taking kotlin.reflect.KClass for org.gradle.api.DomainObjectCollection.withType.

inline fun <S : T, T : Any> NamedDomainObjectCollection<T>.withType(type: KClass<S>): NamedDomainObjectCollection<S>

Kotlin extension function taking kotlin.reflect.KClass for org.gradle.api.NamedDomainObjectCollection.withType.