Uses of Class
org.apache.juneau.commons.lang.Holder

Packages that use Holder

Package	Description
org.apache.juneau.commons.lang	Language utilities including value wrappers, version management, string formatting, state enums, and other common language constructs.
org.apache.juneau.rest.client.classic	REST Client API

Uses of Holder in org.apache.juneau.commons.lang

Subclasses of Holder in org.apache.juneau.commons.lang

Modifier and Type	Class	Description
class	BooleanHolder	A simple mutable boolean value.
class	ByteHolder	A simple mutable byte value.
class	CharHolder	A simple mutable character value.
class	DoubleHolder	A simple mutable double value.
class	FloatHolder	A simple mutable float value.
class	IntegerHolder	A simple mutable integer value.
class	LongHolder	A simple mutable long value.
class	ShortHolder	A simple mutable short value.
class	StringHolder	A simple mutable string value.

Methods in org.apache.juneau.commons.lang that return Holder

Modifier and Type	Method	Description
static <T> Holder<T>	Holder.empty()	Creates a new empty value (with null as the initial value).
Holder<T>	Holder.filter(Predicate<? super T> predicate)	If a value is present, and the value matches the given predicate, returns a Holder describing the value, otherwise returns an empty Holder.
<T2> Holder<T2>	Holder.flatMap(Function<? super T,? extends Holder<? extends T2>> mapper)	If a value is present, returns the result of applying the given Holder-bearing mapping function to the value, otherwise returns an empty Holder.
Holder<T>	Holder.listener(ValueListener<T> listener)	Registers a listener that will be called whenever the value is changed via set(Object).
<T2> Holder<T2>	Holder.map(Function<? super T,T2> mapper)	Applies a mapping function to the value if present, returning a new Holder with the result.
static <T> Holder<T>	Holder.of(T object)	Creates a new value with the specified initial value.
Holder<T>	Holder.set(T t)	Sets the value.
Holder<T>	Holder.setIf(boolean condition, T t)	Sets the value only if the specified condition is true.
Holder<T>	Holder.setIfEmpty(T t)	Sets the value only if it is currently empty (null).
Holder<T>	Holder.update(UnaryOperator<T> updater)	Updates the value in-place using the specified function.

Method parameters in org.apache.juneau.commons.lang with type arguments of type Holder

Modifier and Type	Method	Description
<T2> Holder<T2>	Holder.flatMap(Function<? super T,? extends Holder<? extends T2>> mapper)	If a value is present, returns the result of applying the given Holder-bearing mapping function to the value, otherwise returns an empty Holder.

Uses of Holder in org.apache.juneau.rest.client.classic

Methods in org.apache.juneau.rest.client.classic with parameters of type Holder

Modifier and Type	Method	Description
<T> RestResponse	ResponseHeader.as(Holder<T> value, Class<T> type)	Same as ResponseHeader.as(Class) but sets the value in a mutable for fluent calls.
<T> RestResponse	ResponseHeader.as(Holder<T> value, Type type, Type... args)	Same as ResponseHeader.as(Type,Type...) but sets the value in a mutable for fluent calls.
<T> RestResponse	ResponseHeader.as(Holder<T> value, ClassMeta<T> type)	Same as ResponseHeader.as(ClassMeta) but sets the value in a mutable for fluent calls.
RestResponse	ResponseHeader.asString(Holder<String> value)	Same as BasicHeader.asString() but sets the value in a mutable for fluent calls.