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12.2. Writing Seam applications in Groovy

Since Groovy objects are Java objects, any Seam component can be written and deployed with Groovy. You can also combine Groovy and Java classes in the same application.

12.2.1. Writing Groovy components
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You will need to use Groovy 1.1 or higher to support annotations. The rest of this chapter shows how to use Groovy in a Seam application.

12.2.1.1. Entity
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Example 12.1. Using Groovy in a Seam Application

@Entity
@Name("hotel")
class Hotel implements Serializable {
    @Id @GeneratedValue
    Long id
          
        @Length(max=50) @NotNull
        String name

        @Length(max=100) @NotNull
        String address

        @Length(max=40) @NotNull
        String city

        @Length(min=2, max=10) @NotNull
        String state

        @Length(min=4, max=6) @NotNull
        String zip

        @Length(min=2, max=40) @NotNull
        String country

        @Column(precision=6, scale=2)
        BigDecimal price

        @Override
        String toString(){
        return "Hotel(${name},${address},${city},${zip})"
    }
}
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Since Groovy supports properties, there is no need to explicitly write verbose getters and setters. In the previous example, the hotel class can be accessed from Java as hotel.getCity() — the getters and setters are generated by the Groovy compiler. This makes the entity code very concise.
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