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Serverless framework with java MySQL conexion

I'm new with serverless framework. I'm trying to make a test of a simple application with maven, spring, hibernate, jpa, mysql and serverless.
this is my project
As a restApi works ok, but when I invoke the function in serverless terminal the information came null, because is not getting the info from the db.
this is my code
persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="serverless-java" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>com.serverless.persistence.Wizard</class>
<properties>
<property name="hibernate.connection.url" value="jdbc:mysql://mydb.uiyfuas7434.us-east-1.rds.amazonaws.com:3306/mydb" />
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.password" value="1234" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
<!-- Important -->
<property name="hibernate.connection.provider_class" value="org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider" />
<property name="hibernate.c3p0.max_size" value="10" />
<property name="hibernate.c3p0.min_size" value="0" />
<property name="hibernate.c3p0.acquire_increment" value="1" />
<property name="hibernate.c3p0.idle_test_period" value="120" />
<property name="hibernate.c3p0.max_statements" value="0" />
<property name="hibernate.c3p0.timeout" value="240" />
<!-- Features -->
<property name="hibernate.connection.autoReconnect" value = "true"/>
<property name="hibernate.show_sql" value = "false" />
<property name="hibernate.connection.autoReconnectForPools" value = "true"/>
<property name="hibernate.connection.is-connection-validation-required" value = "true"/>
</properties>
</persistence-unit>
</persistence>
my Handler class
public class Handler implements RequestHandler<Map<String, Object>, ApiGatewayResponse> {
private static final Logger logger = LoggerFactory.getLogger(TestService.class);
#Autowired
private IBaseService service;
#Override
public ApiGatewayResponse handleRequest(Map<String, Object> input, Context context) {
List<Wizard> prueba = service.getWizards();
Map<String, Wizard> response = new HashMap<>();
Response responseBody = new Response("success", response);
try {
for (Wizard entity : prueba) {
response.put(entity.getName(), entity);
}
responseBody.setInput(response);
} catch (Exception e) {
logger.error(e.getMessage(), e);
responseBody.setMessage("Fail: " + e.getMessage());
}
return ApiGatewayResponse.builder().setStatusCode(200).setObjectBody(responseBody)
.setHeaders(Collections.singletonMap("This is a test", "AWS Lambda & serverless")).build();
}
}
my serverless.yml
service: aws-java-maven # NOTE: update this with your service name
provider:
name: aws
runtime: java8
iamRoleStatements:
- Effect: "Allow"
Action:
- "mysql:*"
Resource: "*"
package:
artifact: target/hello-dev.jar
functions:
get-transactions:
handler: com.serverless.Handler

How can I generate UTF8 table using hibernate

I am using hibernate version: 4.3.8.Final
In web.xml i have:
`
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect"/>
<property name="hibernate.validator.apply_to_ddl" value="true" />
<property name="hibernate.connection.CharSet" value="utf8" />
<property name="hibernate.connection.characterEncoding" value="utf8" />
<property name="hibernate.connection.useUnicode" value="true" />
<property name="connection.provider_class" value="org.hibernate.connection.C3P0ConnectionProvider"/>
<property name="hibernate.c3p0.min_size" value="5"/>
<property name="hibernate.c3p0.max_size" value="20"/>
<property name="hibernate.c3p0.timeout" value="300"/>
<property name="hibernate.c3p0.max_statements" value="50"/>
<property name="hibernate.c3p0.idle_test_period" value="300"/>`
When I run app, hibernate generate all table in: latin1_swedish_ci
I read a lot of pages on google, but nothing help me.
How can I generate utf8 table using hibernate? IT IS POSSIBLE?
Thank you for any help.

If you check the org.hibernate.dialect.MySQL5InnoDBDialect implementation you'll find this :
package org.hibernate.dialect;
/**
* #author Gavin King, Scott Marlow
*/
public class MySQL5InnoDBDialect extends MySQL5Dialect {
public boolean supportsCascadeDelete() {
return true;
}
public String getTableTypeString() {
return " ENGINE=InnoDB";
}
public boolean hasSelfReferentialForeignKeyBug() {
return true;
}
}
So you can see in getTableTypeString the return value, what you can do is extends the MySQLDialect class and override getTableTypeString method to return
"ENGINE=InnoDB DEFAULT CHARSET=utf8";
Otherwise (you can try a lazy solution) try with adding UseUnicode=true&characterEncoding=utf8 at the end of your database connection url

Implementation of timeout in LDAP

I have been handling an application in which we are using LDAP to fetch user details. Sometimes it will take more time to fetch user details. I want to implement time out on methods that fetch details so that we can avoid hanging transactions in server in worst case.
Here we are using LdapUtil class in which we have configured LdapTemplate class to fetch the required details.
How can we implement timeout on LDAP methods?
(In this case ldapTemplate.search(...) methods)
public class LdapUtil {
#Autowired(required = true)
#Qualifier(value = "ldapTemplateApp")
LdapTemplate ldapTemplate;
public Set < ProductGroup > findProducts(String UserId) {
final Set < ProductGroup > products = newHashSet();
// Lookup the user
String usrFilter = String.format(USERID_FILTER, globalUserId);
ldapTemplate.search("ou=Members", usrFilter, // note this line
new NameClassPairCallbackHandler() {
public void handleNameClassPair(NameClassPair nameClassPair) {
SearchResult result = (SearchResult) nameClassPair;
String user = result.getNameInNamespace();
String GrpFilter = String.format(GROUP_FILTER, user);
List < String > zonePrefixes = ldapTemplate.search("Zones", GrpFilter, // note this line
new AttributesMapper() {
public Object mapFromAttributes(Attributes attributes) throws NamingException {
return substringBeforeLast((String) attributes.get("cn").get(), "-") + "-";
}
});
}
});
products.remove(null);
return newHashSet(products);
}
}
We have one LDAP.xml in which ldapTemplete is configured
<beans xmlns="------">
<!-- LDAP -->
<bean id="contextSourceApp" class="org.springframework.ldap.pool.factory.PoolingContextSource">
<property name="contextSource" ref="contextSourceTargetApp" />
<property name="dirContextValidator">
<bean id="dirContextValidator"
class="org.springframework.ldap.pool.validation.DefaultDirContextValidator"/>
</property>
<property name="testOnBorrow" value="true" />
</bean>
<bean id="contextSourceTargetApp" class="org.springframework.ldap.core.support.LdapContextSource">
<property name="url" value="${ldap.url}" />
<property name="base" value="${ldap.base.}" />
<property name="userDn" value="${ldap.user}" />
<property name="password" value="${ldap.password}" />
<property name="pooled" value="false" />
</bean>
<bean id="ldapTemplateApp" class="org.springframework.ldap.core.LdapTemplate">
<constructor-arg ref="contextSourceApp" />
</bean>
I have few queries:
How can we implement the TIMEOUT for LDAP methods and how to configure it?(In which class of LDAP framework timeout settings will be there)
Is there any way to configure them in xml file i.e. LDAP.xml(in this case)?

I found a solution.
I have added the following property in my ldap.xml file. So far it worked for me.
<bean id="contextSourceTargetApp"
class="org.springframework.ldap.core.support.LdapContextSource">
<property name="baseEnvironmentProperties">
<map>
<entry key="com.sun.jndi.ldap.connect.timeout" value="5000" />
</map>
</property>
</bean>
Please post any other solution if you have any idea about LDAP timeout implementation.

For ActiveDirectoryLdapAuthenticationProvider the solution with ldap.xml file did not work for me. Instead I added a jndi.properties file to the classpath with the following content:
com.sun.jndi.ldap.connect.timeout=500

Hibernate/JPA validation failing when connecting to AS400

I'm developing a Tomcat-based webapp I'm trying to get to talk to an existing AS400 data store. I've copied most of the settings from an existing web app which works, but when I run my new app I get this:
2013-08-08 13:50:11,988 ERROR [RMI TCP Connection(3)-127.0.0.1] org.hibernate.tool.hbm2ddl.SchemaValidator - could not get database metadata
java.sql.SQLException: [SQL5016] Qualified object name SYSSEQUENCES not valid.
at com.ibm.as400.access.JDError.throwSQLException(JDError.java:646)
at com.ibm.as400.access.JDError.throwSQLException(JDError.java:617)
at com.ibm.as400.access.AS400JDBCStatement.commonPrepare(AS400JDBCStatement.java:1578)
at com.ibm.as400.access.AS400JDBCStatement.executeQuery(AS400JDBCStatement.java:2138)
at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
at org.apache.tomcat.dbcp.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
at org.hibernate.tool.hbm2ddl.DatabaseMetadata.initSequences(DatabaseMetadata.java:151)
at org.hibernate.tool.hbm2ddl.DatabaseMetadata.<init>(DatabaseMetadata.java:69)
at org.hibernate.tool.hbm2ddl.SchemaValidator.validate(SchemaValidator.java:132)
at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:378)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1872)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:906)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:74)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:288)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:310)
[SNIP]
Seems like it's failing looking for the SYSSEQUENCES object (presumably a table) but there's no such table in my schema, or anywhere that I'm aware of. Why is it doing this and how can I correct it?
Here's the SERVER.XML resource that I'm using to connect:
<Resource
name="jdbc/myresource"
auth="Container"
driverClassName="com.ibm.as400.access.AS400JDBCDriver"
maxActive="20"
maxIdle="10"
maxWait="5000"
password="mypassword"
testOnBorrow="true"
type="javax.sql.DataSource"
url="jdbc:as400://mysystem.mycompany.com;libraries=LIB1 LIB2 LIB3;dateformat=iso;timeformat=iso;prompt=false;naming=system;transaction isolation=none"
username="myusername"
validationQuery="SELECT * from sysibm/sysdummy1"/>
Here's my PERSISTENCE.XML:
<persistence-unit name="myPersistenceUnit">
<properties>
<property name="hibernate.generate_statistics" value="true" />
<property name="hibernate.cache.use_structured_entries" value="true" />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.format_sql" value="true" />
<property name="hibernate.jdbc.batch_size" value="100" />
<property name="hibernate.dialect" value="org.hibernate.dialect.DB2400Dialect" />
<property name="hibernate.hbm2ddl.auto" value="validate" />
</properties>
</persistence-unit>

Examining the stack trace the issue begins at org.hibernate.tool.hbm2ddl.DatabaseMetadata.initSequences.
The initSequences method checks the dialect for sequence support:
DatabaseMetadata.initSequences
private void initSequences(Connection connection, Dialect dialect) throws SQLException {
if ( dialect.supportsSequences() ) {
String sql = dialect.getQuerySequencesString();
DB2400Dialect reports that it does not:
DB2400Dialect.java
public class DB2400Dialect extends DB2Dialect {
#Override
public boolean supportsSequences() {
return false;
}
For reference the base DB2Dialect does support sequences and references sysibm.syssequences:
DB2Dialect.java
#Override
public boolean supportsSequences() {
return true;
}
#Override
public String getQuerySequencesString() {
return "select seqname from sysibm.syssequences";
}
It would appear that either your dialect is not being set properly or your version of DB2400Dialect is reporting that it does support sequences.

Try using the following:
public class DB2AS400Dialect extends DB2400Dialect {
#Override
public String getQuerySequencesString() {
return null;
}
}
Since the Dialect class does the following:
public SequenceInformationExtractor getSequenceInformationExtractor() {
if ( getQuerySequencesString() == null ) {
return SequenceInformationExtractorNoOpImpl.INSTANCE;
}
else {
return SequenceInformationExtractorLegacyImpl.INSTANCE;
}
}
Instead of consulting the boolean value if the dialect supports sequences.

How to use util.List in GWT RPC

I have this situation:
class User
#Entity
#Configurable(preConstruction=true)
public class User extends AbstractBussinessObject implements Serializable {
#OneToMany(mappedBy = "user", fetch = FetchType.LAZY)
private List<Warrior> warriors;
...
class UserDto
public class UserDto extends AbstractDto implements Serializable{
private List<WarriorDto> warriors;
private String name;
private String password;
public UserDto() {}
public UserDto(Long id, List<WarriorDto> warriors, String name, String password) {
this.warriors = warriors;
...
class Warrior
#Entity
public class Warrior extends AbstractBussinessObject implements Serializable{
#JoinColumn(name = "user_id")
#ManyToOne
private User user;
...
class WarriorDto
public class WarriorDto extends AbstractDto implements Serializable{
private User user;
...
method in WarriorServiceImpl
#Transactional(readOnly = true)
public List<WarriorDto> getAllWarriors() {
List<Warrior> wars = null;
List<WarriorDto> warsDto = new ArrayList<WarriorDto>();
try {
wars = genericDao.getAll(Warrior.class);
if (wars != null) {
for (Warrior war : wars) {
warsDto.add(createWarriorDto(war));
}
}
} catch (Exception e) {}
return warsDto;
}
method in DAO
#SuppressWarnings("unchecked")
#Override
public <ENTITY> List<ENTITY> getAll(Class<ENTITY> clazz) {
return getEntityManager().createQuery(
"SELECT e FROM " + clazz.getSimpleName() + " e")
.getResultList();
}
applicationContext.xml
<!-- Connection pool -->
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialSize" value="2" />
<property name="minIdle" value="2" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform" value="${jpa.platform}" />
<property name="generateDdl" value="true" />
<property name="showSql" value="true" />
</bean>
</property>
<property name="packagesToScan" value="cz.sutak.game" />
</bean>
<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<!-- Podpora deklarativni demarkace transakci - anotace #Transactional -->
<tx:annotation-driven transaction-manager="txManager" mode="aspectj" />
<bean id="transactionTemplate"
class="org.springframework.transaction.support.TransactionTemplate">
<property name="transactionManager">
<ref bean="txManager" />
</property>
</bean>
complete code
https://github.com/sutakjakub/game
And if I want call WarriorService.Util.getInstance().getAllWarriors(
new AsyncCallback<List<WarriorDto>>() in widgets it will failure with this message: com.google.gwt.user.client.rpc.StatusCodeException: 500 The call failed on the server; see server log for details.
In Jetty is only this message: [ERROR] 500 - POST /game/warrior (127.0.0.1) 57 bytes
No error message more.
Is problem in serialization (util.List)? Do u have some idea?
Thank you very much.
EDIT:
This is error message in terminal (sorry i didnt look that):
ERROR LazyInitializationException - failed to lazily initialize a collection of role: cz.sutak.game.client.bo.User.warriors, no session or session was closed

The problem is that on the client side Hibernate has no way of fetching the attributes you marked with fetch = FetchType.LAZY. You either need to fetch them eagerly on the server side og null the Hibernate proxies before passing the object graph over the wire.
See my answer in another thread for tips on nulling Hibernate proxies.
Cheers,

Here As you said there is nothing to do with GWT,because its server side code.Even on clien side GWT supports Util.List.
And coming to the original problem.Its with the line wars = genericDao.getAll(Warrior.class);
while accessing this line there is no hibernate session opened.