de.team33.patterns.pooling.e1

Class Provider<S>

java.lang.Object

de.team33.patterns.pooling.e1.XProvider<S,RuntimeException>

de.team33.patterns.pooling.e1.Provider<S>

Type Parameters:

S - The type of provided instances (subjects).

public class Provider<S>
extends XProvider<S,RuntimeException>

A tool that makes instances of a certain type available for the course of operations that require such an instance. The instances provided are referred to as subject in the following.

The tool maintains a number of such subjects and only creates as many as are actually required at most at the same time in its application context. The subjects are retained and reused for subsequent operations.

In this respect, this tool is suitable for providing subject types whose instantiation is relatively "expensive", which are rather unsuitable for concurrent access, but are designed for multiple or permanent use. Database or other client-server connections may be an example.

Note: this implementation cannot detect when an internal operation is taking place in the course of an operation to which the same subject could be made available.

This implementation does not support checked exceptions to occur while creating new subject instances.

See Also:

XProvider

Constructor Summary

Constructors

Constructor and Description
Provider(Supplier<S> newItem) Initializes a new instance giving a Supplier that defines the intended initialization of a new subject.

Method Summary

Methods inherited from class de.team33.patterns.pooling.e1.XProvider

get, getEx, run, runEx

Methods inherited from class java.lang.Object

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

Constructor Detail

Provider

public Provider(Supplier<S> newItem)

Initializes a new instance giving a Supplier that defines the intended initialization of a new subject.