com.namehillsoftware.lazyj

Class AbstractSynchronousLazy<T>

java.lang.Object

com.namehillsoftware.lazyj.AbstractSynchronousLazy<T>

Type Parameters:

T - The type to create

All Implemented Interfaces:

CreateAndHold<T>

Direct Known Subclasses:

Lazy

public abstract class AbstractSynchronousLazy<T>
extends java.lang.Object
implements CreateAndHold<T>

An implementation of CreateAndHold which initializes after a double-checked lock.

Example implementation:

public static CreateAndHold<MyCrazySingletonConfig> myCrazySingletonConfig = new AbstractSynchronousLazy<MyCrazySingletonConfig>() {
    @Override
    protected MyCrazySingletonConfig create() {
        final MyCrazySingletonConfig newConfig = .....

        return newConfig;
    }
};

Constructor Summary

Constructors

Constructor and Description
AbstractSynchronousLazy()

Method Summary

Modifier and Type	Method and Description
protected abstract T	create() The creation function.
T	getObject() Returns the object, creating it first if necessary.
boolean	isCreated() Check if object of type T is created

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractSynchronousLazy

public AbstractSynchronousLazy()

Method Detail

isCreated

public boolean isCreated()

Description copied from interface: CreateAndHold

Check if object of type T is created

Specified by:

isCreated in interface CreateAndHold<T>

Returns:

True if the object is created

create

protected abstract T create()
                     throws java.lang.Throwable

The creation function. This function will only be called once. If the implementation gives an error, that error will be retained and rethrown.

Returns:

An object of type @param

Throws:

java.lang.Throwable

getObject

public final T getObject()

Description copied from interface: CreateAndHold

Returns the object, creating it first if necessary.

Specified by:

getObject in interface CreateAndHold<T>

Returns:

An object of type @param