Collect4j

Collect4j is an DSL (Domain Specific Language) for manipulates Java Collections API. Simple Commands do filter and access values in a collection.

Using

Add the jar file collect4j-X.X.jar to your classpath, or dowload from maven repositories (repo1)

Building from source

Needs:

• Sun SDK for Java 1.6
• Apache Maven 2.0.8

Supports

• eql for equals comparision
• like for string content
• only method, is same on eql but if eql receive two values is used or, only use and
• supports generic (objects is supported too)
• comparates some fields (Only for your custom class)

TODO

• Implements more Collection search (Like a regex)
• Map Implementations

Usage Samples

• Simple Collections

  List list = new ArrayList();
    list.add("Uva");
    list.add("Maça");
    list.add("Melancia");
    list.add("Melão");
    list.add("Maracujá");
    Collection busca = (Collection) new Collect().in(lista).when().like("Mel", "Ma"); //Search in the collection when the content contatis the passed string.
  

Generics Collections

public class Person{


    String name;
    int age;

    public Person() {
        super();
    }

    public Person(String name, int age) {
        super();
        this.name = name;
        this.age = age;
    }
    //Getters and setters
    /**
     * Some cases the to string is used too
     * @see java.lang.Object#toString()
     */
    @Override
    public String toString() {
        return "Person["+name+", "+age+" ]";
    }

}

  List<Person> persons = new ArrayList<Person>();
    persons.add(new Person("Rafael", 21));
    persons.add(new Person("Suélen", 19));
    persons.add(new Person("Pedro", 23));
    persons.add(new Person("Rodrigo", 23));
  Collection<Person> busca = (Collection<Person>) new Collect().in(persons).when("age").eql(23);//Compare with the field age is equals to 23, and return a new collection
  Collection<Person> busca = (Collection<Person>) new Collect().in(persons).when().eql("23");//Compare the Person#toString() contais the string "23"