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@Override public Graph getDefaultGraph() { if ( dftGraph == null ) dftGraph = new GraphReadOnly(super.getDefaultGraph()) ; return dftGraph ; }
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return namedGraphs.get(graphNode) ; } Graph g = super.getGraph(graphNode) ; if ( g == null ) return null ; g = new GraphReadOnly(g) ; namedGraphs.put(graphNode, g) ; return g ; }