Re: Firefox crash When using rdf:files in a composite datasource with my rdf datasource component!

i find another way to fix this problem:

    GetTarget: function(aSource,aProperty,aTruthValue)
    {
        var retVal = this._rdfDataSource.GetTarget
(aSource,aProperty,aTruthValue);
        if(!retVal)
        {
            throw Components.results.NS_ERROR_FAILURE;
        }
        return retVal;
    },

Is it mean that the RDFContainerUtils leave the work of disposing
error to the implementation of nsIRDFDataSource？