com.google.cloud.spanner

Class AbstractLazyInitializer<T>

java.lang.Object

com.google.cloud.spanner.AbstractLazyInitializer<T>

Direct Known Subclasses:

LazySpannerInitializer

public abstract class AbstractLazyInitializer<T>
extends Object

Generic AbstractLazyInitializer for any heavy-weight object that might throw an exception during initialization. The underlying object is initialized at most once.

Constructor Summary

Constructors

Constructor and Description
AbstractLazyInitializer()

Method Summary

Modifier and Type	Method and Description
T	get() Returns an initialized instance of T.
protected abstract T	initialize() Initializes the actual object that should be returned.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractLazyInitializer

public AbstractLazyInitializer()

Method Detail

get

public T get()
      throws Exception

Returns an initialized instance of T.

Throws:

Exception

initialize

protected abstract T initialize()
                         throws Exception

Initializes the actual object that should be returned. Is called once the first time an instance of T is required.

Throws:

Exception