com.redhat.lightblue.migrator.facade

Class DAOFacadeBase<D>

java.lang.Object

com.redhat.lightblue.migrator.facade.DAOFacadeBase<D>

public class DAOFacadeBase<D>
extends Object

A helper base class for migrating services from legacy datastore to lightblue. It lets you call any service/dao method, using togglz switches to choose which service/dao to use and verifying returned data. Verification uses equals method - use BeanConsistencyChecker in your beans for sophisticated consistency check.

Author:

mpatercz

Field Summary

Fields

Modifier and Type	Field and Description
protected D	legacyDAO
protected D	lightblueDAO

Constructor Summary

Constructors

Constructor and Description
DAOFacadeBase(D legacyDAO, D lightblueDAO)

Method Summary

Modifier and Type	Method and Description
<T> T	callDAOCreateSingleMethod(boolean pureWrite, EntityIdExtractor<T> entityIdExtractor, Class<T> returnedType, String methodName, Class[] types, Object... values) Call dao method which creates a single entity.
<T> T	callDAOCreateSingleMethod(boolean pureWrite, EntityIdExtractor<T> entityIdExtractor, Class<T> returnedType, String methodName, Object... values)
<T> T	callDAOReadMethod(Class<T> returnedType, String methodName, Class[] types, Object... values) Call dao method which reads data.
<T> T	callDAOReadMethod(Class<T> returnedType, String methodName, Object... values) Call dao method which reads data.
<T> List<T>	callDAOReadMethodReturnList(Class<T> returnedType, String methodName, Class[] types, Object... values)
<T> T	callDAOUpdateMethod(Class<T> returnedType, String methodName, Class[] types, Object... values) Call dao method which updates data.
<T> T	callDAOUpdateMethod(Class<T> returnedType, String methodName, Object... values) Call dao method which updates data.
boolean	checkConsistency(Object o1, Object o2)
EntityIdStore	getEntityIdStore()
int	getTimeoutSeconds()
void	setEntityIdStore(EntityIdStore entityIdStore)
void	setTimeoutSeconds(int timeoutSeconds)

Methods inherited from class java.lang.Object

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

Field Detail

legacyDAO

protected final D legacyDAO

lightblueDAO

protected final D lightblueDAO

Constructor Detail

DAOFacadeBase

public DAOFacadeBase(D legacyDAO,
                     D lightblueDAO)

Method Detail

getEntityIdStore

public EntityIdStore getEntityIdStore()

setEntityIdStore

public void setEntityIdStore(EntityIdStore entityIdStore)

checkConsistency

public boolean checkConsistency(Object o1,
                                Object o2)

callDAOReadMethod

public <T> T callDAOReadMethod(Class<T> returnedType,
                               String methodName,
                               Class[] types,
                               Object... values)
                        throws Exception

Call dao method which reads data.

Parameters:

returnedType - type of the returned object

methodName - method name to call

types - List of parameter types

values - List of parameters

Returns:

Object returned by dao

Throws:

Exception

callDAOReadMethodReturnList

public <T> List<T> callDAOReadMethodReturnList(Class<T> returnedType,
                                               String methodName,
                                               Class[] types,
                                               Object... values)
                                        throws Exception

Throws:

Exception

callDAOReadMethod

public <T> T callDAOReadMethod(Class<T> returnedType,
                               String methodName,
                               Object... values)
                        throws Exception

Call dao method which reads data. Won't work if method has primitive parameters.

Parameters:

returnedType - type of the returned object

methodName - method name to call

values - List of parameters

Returns:

Object returned by dao

Throws:

Exception

callDAOUpdateMethod

public <T> T callDAOUpdateMethod(Class<T> returnedType,
                                 String methodName,
                                 Class[] types,
                                 Object... values)
                          throws Exception

Call dao method which updates data. Updating makes sense only for entities with known ID. If ID is not specified, it will be generated by both legacy and lightblue datastores independently, creating a data incosistency. If you don't know the ID, use callDAOUpdateMethod method.

Parameters:

returnedType - type of the returned object

methodName - method name to call

types - List of parameter types

values - List of parameters

Returns:

Object returned by dao

Throws:

Exception

callDAOUpdateMethod

public <T> T callDAOUpdateMethod(Class<T> returnedType,
                                 String methodName,
                                 Object... values)
                          throws Exception

Call dao method which updates data. Won't work if method has primitive parameters.

Parameters:

returnedType - type of the returned object

methodName - method name to call

values - List of parameters

Returns:

Object returned by dao

Throws:

Exception

callDAOCreateSingleMethod

public <T> T callDAOCreateSingleMethod(boolean pureWrite,
                                       EntityIdExtractor<T> entityIdExtractor,
                                       Class<T> returnedType,
                                       String methodName,
                                       Class[] types,
                                       Object... values)
                                throws Exception

Call dao method which creates a single entity. It will ensure that entities in both legacy and lightblue datastores are the same, including IDs.

Parameters:

pureWrite - method does only write if true. Set it to false if does both read and write.

returnedType - type of the returned object

methodName - method name to call

types - List of parameter types

values - List of parameters

Returns:

Object returned by dao

Throws:

Exception

callDAOCreateSingleMethod

public <T> T callDAOCreateSingleMethod(boolean pureWrite,
                                       EntityIdExtractor<T> entityIdExtractor,
                                       Class<T> returnedType,
                                       String methodName,
                                       Object... values)
                                throws Exception

Throws:

Exception

getTimeoutSeconds

public int getTimeoutSeconds()

setTimeoutSeconds

public void setTimeoutSeconds(int timeoutSeconds)