i have mapped my XRef class with XDoclet and it works fine. Howeever, when i wanted to assign indexes to the collections held by my XRef class i ecountered some problems saying that my mapping is invalid. below is my mapping just for the collection


public class XRef
{
....some code

/**
* @hibernate.set inverse="false"
* table="GeneSymbols"
* lazy="true"
* cascade="delete"
* type = "text"
* @hibernate.collection-element column="GeneSymbol" type="text"
* @hibernate.collection-key column="xref"
* @hibernate.collection-index column="GeneSymbolIndex" type="text"
*/
public Set getGeneSymbol() {
return geneSymbol;
}

public void setGeneSymbol(Set geneSymbol) {
this.geneSymbol = geneSymbol;
}
}


any kind of help is appreciated, thanks in advance....