OdoPetition.java

@NamedEntityGraphs({
        @NamedEntityGraph(
                name = "OdoPetition.xls",
                attributeNodes = {
                        @NamedAttributeNode("document"),
                        @NamedAttributeNode("organization"),
                        @NamedAttributeNode(value = "studyProgram", subgraph = "OdoPetition.studyProgram.xls")
                },
                subgraphs = {
                        @NamedSubgraph(name = "OdoPetition.studyProgram.xls",
                                type = StudyProgram.class,
                                attributeNodes = @NamedAttributeNode("department")
                        )
                }
        )
})