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Introduction

Ruddi comes with a full set of collection classes that allow writing strongly typed UDDI applications. Instead of having to work with the usual generic Java collection classes such as java.util.Vector, a Ruddi developer uses strongly typed, UDDI-specific collections such as Contacts, Addresses, etc. This approach allows writing applications that are much more expressive and are also cleaner because they allow avoiding to use of the cast operator.

Ruddi collections

Ruddi collections all have the same structure. The following summarizes the main methods of a Ruddi collection:

• public boolean add(<Ruddi data structure>)
  Adds a Ruddi data structure to the list of data structures hold by the collection.
  
• public boolean remove(<Ruddi data structure>)
  Removes a Ruddi data structure from the list of data structures hold by the collection.
  
• public <Ruddi data structure>Iterator iterator()
  Returns an iterator allowing iterating over the content of the collection.
  
• public <Ruddi data structure>[] toArray()
  Returns an array containing the same Ruddi data structures as the collection.
• public int size()
  Returns the number of Ruddi data structures composing the collection.

Ruddi iterators

Ruddi iterators all have the same structure. The following summarizes the main methods of a Ruddi iterator:

• public boolean hasNext()
  Returns whether the collection has a next element.
  
• public <Ruddi data structure> next()
  Returns the next Ruddi data structure of the collection.
  
• public void remove()
  Removes the current Ruddi data structure from the collection.