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Sai Hemanth Gantasala commented on THRIFT-2877: ----------------------------------------------- {code:java} case t_base_type::TYPE_I64: case t_base_type::TYPE_DOUBLE: indent(out) << "hashCode = hashCode * " << MUL << " + org.apache.thrift.TBaseHelper.hashCode(" << name << ");" << endl; break; {code} This particular change seems to be breaking interoperability between new thrift servers (eg: 0.13) and older thrift clients (0.9.3) TbaseHelper on the client is unable to execute the deserialized object because the server is sending hashcode method which is not present on the client-side. How do we work around this issue? cc [~roshangeorge] > Optimize generated hashCode > --------------------------- > > Key: THRIFT-2877 > URL: https://issues.apache.org/jira/browse/THRIFT-2877 > Project: Thrift > Issue Type: Improvement > Components: Java - Compiler > Affects Versions: 0.9.3 > Reporter: Mike Rettig > Assignee: Roshan George > Priority: Critical > Fix For: 0.10.0 > > > The generated java hashCode method allocates an ArrayList then appends the > fields to the list. Primitive fields will be boxed when added to the list. > The generated code shouldn't allocate a list or box primitives. The hashCode > can be calculated by using a primitive int and some static utility methods > which can return the hashCode for each type. > out << indent() << "@Override" << endl << indent() << "public int hashCode() > {" << endl; > 1839 indent_up(); > 1840 indent(out) << "List<Object> list = new ArrayList<Object>();" << endl; > 1841 > 1842 for (m_iter = members.begin(); m_iter != members.end(); ++m_iter) { > 1843 out << endl; > 1844 > 1845 t_type* t = get_true_type((*m_iter)->get_type()); > 1846 bool is_optional = (*m_iter)->get_req() == t_field::T_OPTIONAL; > 1847 bool can_be_null = type_can_be_null(t); > 1848 string name = (*m_iter)->get_name(); > 1849 > 1850 string present = "true"; > 1851 > 1852 if (is_optional || can_be_null) { > 1853 present += " && (" + generate_isset_check(*m_iter) + ")"; > 1854 } > 1855 > 1856 indent(out) << "boolean present_" << name << " = " << present << ";" > << endl; > 1857 indent(out) << "list.add(present_" << name << ");" << endl; > 1858 indent(out) << "if (present_" << name << ")" << endl; > 1859 if (t->is_enum()) { > 1860 indent(out) << " list.add(" << name << ".getValue());" << endl; > 1861 } else { > 1862 indent(out) << " list.add(" << name << ");" << endl; > 1863 } > 1864 } > 1865 > 1866 out << endl; > 1867 indent(out) << "return list.hashCode();" << endl; > 1868 indent_down(); > 1869 indent(out) << "}" << endl << endl; > 1870 } -- This message was sent by Atlassian Jira (v8.3.4#803005)