com.wallee.android.sdk.request.icon

Class InMemoryIconCache

java.lang.Object

com.wallee.android.sdk.request.icon.AbstractIconCache

com.wallee.android.sdk.request.icon.InMemoryIconCache

All Implemented Interfaces:

IconCache

public final class InMemoryIconCache
extends AbstractIconCache
implements IconCache

This implementation of IconCache stores the icons in the memory by using a static field.

The implementation will reused the stored icons. Whenever the JVM is killed the cache is onResetView. This means the class will reuse the stored icons as long as the app is running. On a restart the icons will be refreshed.

For most use cases this is a desired behavior because at some point the data has to be removed resp. refreshed. We use the app restart to onResetView the cache and reload the icons.

Nested Class Summary

Nested classes/interfaces inherited from class com.wallee.android.sdk.request.icon.AbstractIconCache

AbstractIconCache.CacheKey

Field Summary

Fields inherited from interface com.wallee.android.sdk.request.icon.IconCache

DEFAULT_ICON_LOADING_TIMEOUT

Constructor Summary

Constructors

Constructor and Description
InMemoryIconCache(IconRequestManager iconRequestManager, long timeout) Constructs an instance based on a IconRequestManager.

Method Summary

Modifier and Type	Method and Description
protected PaymentMethodIcon	lookupInLocalCache(AbstractIconCache.CacheKey cacheKey) This method is invoked to try to load the icon from the local cache.
protected void	lookupInRemoteServer(AbstractIconCache.CacheKey cacheKey, RequestCallback<PaymentMethodIcon> callback) This method has to query the remote host to fetch the icon.
protected void	putInLocalCache(AbstractIconCache.CacheKey cacheKey, PaymentMethodIcon icon) This method is invoked to persist an entry into the local cache.

Methods inherited from class com.wallee.android.sdk.request.icon.AbstractIconCache

fetchIcons, loadIcon

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.wallee.android.sdk.request.icon.IconCache

fetchIcons, loadIcon

Constructor Detail

InMemoryIconCache

public InMemoryIconCache(IconRequestManager iconRequestManager,
                         long timeout)

Constructs an instance based on a IconRequestManager.

Parameters:

iconRequestManager - the request manager to use.

timeout - the timeout which cannot be exceeded when multiple icons are loaded. The time is in milliseconds.

Method Detail

lookupInLocalCache

protected PaymentMethodIcon lookupInLocalCache(AbstractIconCache.CacheKey cacheKey)

Description copied from class: AbstractIconCache

This method is invoked to try to load the icon from the local cache. The method may return null when the entry does not exists.

This method has to be implemented in a thread-safe manner.

Specified by:

lookupInLocalCache in class AbstractIconCache

Parameters:

cacheKey - the payment method configuration for which the icon should be looked up.

Returns:

the icon instance or null when it does not exists.

lookupInRemoteServer

protected void lookupInRemoteServer(AbstractIconCache.CacheKey cacheKey,
                                    RequestCallback<PaymentMethodIcon> callback)

Description copied from class: AbstractIconCache

This method has to query the remote host to fetch the icon.

This method has to be implemented in a thread-safe manner.

Specified by:

lookupInRemoteServer in class AbstractIconCache

Parameters:

cacheKey - the payment method configuration for which the icon should be fetched for.

callback - the callback which has to be invoked once the loading has been completed.

putInLocalCache

protected void putInLocalCache(AbstractIconCache.CacheKey cacheKey,
                               PaymentMethodIcon icon)

Description copied from class: AbstractIconCache

This method is invoked to persist an entry into the local cache.

This method has to be implemented in a thread-safe manner.

Specified by:

putInLocalCache in class AbstractIconCache

Parameters:

cacheKey - the payment method configuration for which the icon should be stored for.

icon - the icon which should be stored.