com.trinetix.webrobo.core.persister

Class BaseObjectPersister<T,ID>

java.lang.Object

com.trinetix.webrobo.core.persister.BaseObjectPersister<T,ID>

public class BaseObjectPersister<T,ID>
extends 

Constructor Summary

Constructors

Constructor and Description
BaseObjectPersister(android.app.Application application, DatabaseHelper databaseHelper, java.lang.Class<T> modelObjectType)
BaseObjectPersister(android.app.Application application, DatabaseHelper databaseHelper, java.lang.Class<T> modelObjectType, android.net.Uri notificationUri)

Method Summary

Methods

Modifier and Type	Method and Description
java.util.List<java.lang.Object>	getAllCacheKeys()
long	getCreationDateInCache(java.lang.Object cacheKey)
boolean	isDataInCache(java.lang.Object cacheKey, long maxTimeInCache)
java.util.List<T>	loadAllDataFromCache()
T	loadDataFromCache(java.lang.Object cacheKey, long maxTimeInCache)
void	removeAllDataFromCache() We try to delete only the cache entry which corresponds to the handled class, not to drop the entire cache table.
boolean	removeDataFromCache(java.lang.Object cacheKey)
protected <E> void	saveAllForeignObjectsToCache(E data) During this operation, we must save a new POJO (parent) into the database.
T	saveDataToCacheAndReturnData(T data, java.lang.Object cacheKey)

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseObjectPersister

public BaseObjectPersister(android.app.Application application,
                   DatabaseHelper databaseHelper,
                   java.lang.Class<T> modelObjectType)

Parameters:

application - the android context needed to access android file system or databases to store.

BaseObjectPersister

public BaseObjectPersister(android.app.Application application,
                   DatabaseHelper databaseHelper,
                   java.lang.Class<T> modelObjectType,
                   android.net.Uri notificationUri)

Parameters:

application - the android context needed to access android file system or databases to store.

Method Detail

loadDataFromCache

public T loadDataFromCache(java.lang.Object cacheKey,
                  long maxTimeInCache)
                    throws CacheLoadingException

Throws:

CacheLoadingException

saveDataToCacheAndReturnData

public T saveDataToCacheAndReturnData(T data,
                             java.lang.Object cacheKey)
                               throws CacheSavingException

Throws:

CacheSavingException

isDataInCache

public boolean isDataInCache(java.lang.Object cacheKey,
                    long maxTimeInCache)

getCreationDateInCache

public long getCreationDateInCache(java.lang.Object cacheKey)
                            throws CacheLoadingException

Throws:

CacheLoadingException

saveAllForeignObjectsToCache

protected <E> void saveAllForeignObjectsToCache(E data)
                                     throws java.sql.SQLException,
                                            java.lang.IllegalAccessException,
                                            java.lang.reflect.InvocationTargetException

During this operation, we must save a new POJO (parent) into the database. The problem is that is the POJO contains children POJOs, then saving the parent would not work as the parent must exist in the database prior to saving the children. SO :

• we copy the children into memory,
• put the children to null on parent
• save the parent to the database
• if saving filled the parent with previous children, we remove them
• re inject the children into the parent
• save the children (as the parent now exists in database).

Parameters:

data - the parent POJO to save in the database.

Throws:

java.sql.SQLException

java.lang.IllegalArgumentException

java.lang.IllegalAccessException

java.lang.reflect.InvocationTargetException

removeDataFromCache

public boolean removeDataFromCache(java.lang.Object cacheKey)

removeAllDataFromCache

public void removeAllDataFromCache()

We try to delete only the cache entry which corresponds to the handled class, not to drop the entire cache table.

We also rely on the assumption that the class name is stored in the cacheentry table in the field named resultClassName. This may be due to change in the next versions of the Robospice-ORMLite module.

loadAllDataFromCache

public java.util.List<T> loadAllDataFromCache()
                                       throws CacheLoadingException

Throws:

CacheLoadingException

getAllCacheKeys

public java.util.List<java.lang.Object> getAllCacheKeys()