Drools 5.0 - Read rules

Another form to read the Droools rules is through a FileInputStream


                KnowledgeBuilder kbuilder = KnowledgeBuilderFactory
.newKnowledgeBuilder();

FileInputStream  fis = new FileInputStream(url);
kbuilder.add(ResourceFactory.newInputStreamResource(fis), ResourceType.DTABLE);

KnowledgeBuilderErrors errors = kbuilder.getErrors();
if (errors.size() > 0) {
for (KnowledgeBuilderError error : errors) {
System.err.println(error);
}
throw new IllegalArgumentException("Could not parse knowledge.");
}
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
return kbase;

Instead of

             kbuilder.add(ResourceFactory.newClassPathResource(url), ResourceType.DRL);

PrimeFaces - Mobile

 To implement PrimeFaces for mobile you have to do some changes to the implementation.

1. POM
• Add this repository & dependencies

<repository>
         <id>prime-repo</id>
         <name>Prime Repo</name>
          <url>http://repository.primefaces.org</url>   
         <layout>default</layout>
</repository>
<dependency>
         <groupId>org.primefaces</groupId>
         <artifactId>primefaces</artifactId>
         <version>3.3</version>
</dependency>
<dependency>
         <groupId>org.primefaces</groupId>
         <artifactId>primefaces-mobile</artifactId> 
        <version>0.9.3</version>
</dependency>


1. FACES-CONFIG.xml

• Add in the tag<application>
<application> 
         <default-render-kit-id>PRIMEFACES_MOBILE</default-render-kit-id> 
</application>

1. XHTML
• Add in the libraries xmlns:pm="http://primefaces.org/mobile"
 
• Insert the tag <f:view> instead of <h:body>
<f:view xmlns:pm="http://primefaces.org/mobile" contentType="text/html" renderKitId="PRIMEFACES_MOBILE">

• Insert the tag <pm:page>
<pm:page title="Title page">

• Insert the tag <pm:view>
<pm:view id="main">
 
• If you want to display a header in the page, insert <pm:header>
<pm:header title="Mobile" swatch="b"/>
• There are 5 themes (swatch values): "a", "b", "c", "d", "e"
 
• In the <p:inputText> there is an attribute label, so you don´t have to user the <h:outputLabel> element  

• The nature of the tag <f:facet> in different
 
• The tag <p:dataList> works better than  <p:dataTable>

JSF - Theme

This web site is for design your own themes =)

http://jquerymobile.com/themeroller/

Oracle BPM - Oracle WebLogic Server

1. Install DB (wls1035_win32.exe)
2. Welcome Screen -> Next
3. Choose Middleware Home Directory Screen 
• Select Create a new Middleware Home.  -> Next
4. Register for Security Updates Screen -> Next
5. Choose Install Type Screen
• Select Typical. -> Next
6. Choose Product Installation Directories Screen -> Next
7. Choose Shortcut Location (Windows only) -> Next
8. Installation Summary Screen -> Next
9. Installation Complete Screen 
• De-select Run Quickstart. -> Done

Oracle BPM - RCU

1. Install DB (OracleXE112_Win32)
2. Install the RCU (ofm_rcu_win_11.1.1.5.0_disk1_1of1.zip)  
1. Unzip in path C:\ to avoid the message error Windows cannot find 'C:\Documents'. 
2. Create the environment variable RCU_JDBC_TRIM_BLOCKS with value TRUE

1. 
   
3. Setup steps
1. Welcome Screen -> Next
2. Create Repository Screen -> Next
3. Database Connection Details Screen -> Next  (Accept the warning)
• Host Name: localhost     Ex. ora-node1-vip.example.com
• Port: 1521 by default
• Database Name: xe
• User: SYS
• Pwd: Has to be the password from the DB
• Role: for user SYS the role has to be SYSDBA role
• 
4. Select Components Screen
• 
5. Schema Passwords Screen
1. Select Use same password for all schemas.
2. Type password
6. Map Tablespaces Screen -> Next
7. Summary Screen -> Create -> Next
8. Completion Summary Screen -> Close

You has finished your RCU installation =)

Oracle BPM - Errors

Error: 
Current Value: 100,  it should be greater than or equal to 200.

Solution:

• Login on your database with system user.

            SQL> connect system
            Enter password: 
            Connected.

• Type:
• show parameters processes (which will show the current value of processes).
• ALTER SYSTEM SET PROCESSES=200 SCOPE=SPFILE;
• show parameters open_cursors (which will show the current value of open_cursors).
• ALTER SYSTEM SET OPEN_CURSORS=200 SCOPE=SPFILE;

• Restart DB.

Hibernate - Queries

Load an entity

There are two forms to get an entity with the methods load() or get().

public Category getCategory(Long catId) throws DataAccessException {

    return (Category) this.getSessionFactory().getCurrentSession()
                                              .load(Category.class, catId); }

public Category getCategory(Long catId) throws DataAccessException {
    return (Category) this.getSessionFactory().getCurrentSession()

                                              .get(Category.class, catId); }







The difference are:


load()

Throws an exception if there isn't any row.
Has performane benefits.

get()

Return null if there isn't any row.






HibernateTemplate - Using Parameters with findByNamedParam





In case of use only one parameter, you need the query, parameter name and the value.




public List<ArtEntity> getArtworkInCategory(Long catId)
                                             throws DataAccessException {
    return this.getHibernateTemplate().findByNamedParam(
        "select art from Category cat " +
        "join cat.artEntities art " +
        "where cat.id = :catId ",
        "catId", catId
    );
}

In case of many parameters, you need the query, array with the parameters and the array with corresponding values

public Person authenticatePerson(String username, String password)
                   throws DataAccessException, AuthenticationException {

    List<Person> validUsers = this.getHibernateTemplate().findByNamedParam(
        "select people from Person people where" +
        "people.username = :username " +
        "and people.password = :password",
         new String[] {"username", "password"},
         new String[] {username, password }
    );

    if (validUsers == null || validUsers.size() <= 0) {
        throw new AuthenticationException("No users found");
    } else {
        return validUsers.get(0);
    }
}


Hibernate Core APIs - Using Parameters


public Person authenticatePerson(String username, String password)
                      throws DataAccessException, AuthenticationException {

    Person validUser =
        (Person) this.getSessionFactory().getCurrentSession().createQuery(
            "select people from Person people where" +
            "people.username = :username " +
            "and people.password = :password")
            .setString("username", username)
            .setString("password", password)
            .uniqueResult()
        );

    if (validUser == null) {
            throw new AuthenticationException("No users found");

} else {
        return validUser;
    }
}