Exemplo n.º 1
0
def serializer(context):
  (app, module, package, model_class, write_file, _, _) = context

  facade = bool(context.wrapped_model)

  w = writer.Writer('java')

  java.Package(w, package)

  java.StandardImports(w)

  java.Import(w, 'java.io.IOException')
  w.head()
  java.Import(w, 'java.text.ParseException')
  w.head()
  java.Import(w, 'com.fasterxml.jackson.core.JsonGenerator')
  java.Import(w, 'com.fasterxml.jackson.databind.JsonSerializer')
  java.Import(w, 'com.fasterxml.jackson.databind.SerializerProvider')
  w.head()
  java.Import(w, 'org.joda.time.format.DateTimeFormatter')
  java.Import(w, 'org.joda.time.format.ISODateTimeFormat')

  if facade:
    model_name = syslx.fmt_app_name(context.wrapped_model.name)
    modelpkg = syslx.View(context.wrapped_model.attrs)['package'].s
    w.head()
    java.Import(w, modelpkg + '.*')

  w()
  with java.Class(w, model_class + 'JsonSerializer', write_file,
      package=package, extends='JsonSerializer<' + model_class + '>'):
    w()
    with java.Method(w, 'public', 'void', 'serialize',
                     [(model_class, 'facade' if facade else 'model'),
                      ('JsonGenerator', 'g'),
                      ('SerializerProvider', 'provider')],
                     throws=['IOException'],
                     override=True):
      if facade:
        w('{} model = facade.getModel();', model_name)

      w(u'g.writeStartObject();')
      for (tname, t) in sorted(app.types.iteritems()):
        if t.WhichOneof('type') == 'relation':
          w(u'serialize{0}View(g, model.get{0}Table());', tname)
      w(u'g.writeEndObject();')

    for (tname, t) in sorted(app.types.iteritems()):
      if not t.WhichOneof('type') in ['relation', 'tuple']:
        continue

      w()
      with java.Method(w, 'public', 'void', 'serialize' + tname + 'View',
                       [('JsonGenerator', 'g'),
                        (tname + '.View', 'view')],
                       throws=['IOException']):
        with java.If(w, 'view.isEmpty()'):
          w('return;')
        w('g.writeArrayFieldStart("{}");', tname)
        with java.For(w, '{} item : view', tname):
          w('g.writeStartObject();')
          for (fname, f) in datamodel.sorted_fields(t):
            jfname = java.name(fname)
            method = java.CamelCase(jfname)
            type_ = datamodel.typeref(f, module)[2]
            extra = '{}'
            which_type = type_.WhichOneof('type')
            if which_type == 'primitive':
              (jsontype, extra) = JSON_GEN_MAP[type_.primitive]
              if type_.primitive == type_.DECIMAL:
                for c in type_.constraint:
                  if c.scale:
                    access = (
                      '{0} == null ? null : item.{0}.setScale({1}, '
                      'java.math.RoundingMode.HALF_UP)').format(
                      jfname, c.scale)
                    break
              else:
                access = jfname
            elif which_type == 'enum':
              jsontype = 'Number'
              access = jfname + '.getValue()'
            elif which_type == 'tuple':
              access = jfname
            else:
              raise RuntimeError(
                'Unexpected field type for JSON export: ' + which_type)
            w(u'writeField(g, "{}", {});',
              jfname, extra.format('item.' + access))
          w(u'g.writeEndObject();')
        w(u'g.writeEndArray();')

    for t in ['Boolean', 'String']:
      w()
      with java.Method(w, 'private', 'void', 'writeField'.format(t),
          [('JsonGenerator', 'g'), ('String', 'fieldname'), (t, 'value')],
          throws=['IOException']):
        with java.If(w, 'value != null'):
          w('g.write{}Field(fieldname, value);', t)

    w()
    with java.Method(w, 'private', 'void', 'writeField'.format(t),
        [('JsonGenerator', 'g'), ('String', 'fieldname'), ('Integer', 'value')],
        throws=['IOException']):
      with java.If(w, 'value != null'):
        w('g.writeNumberField(fieldname, value.intValue());')

    w()
    with java.Method(w, 'private', 'void', 'writeField'.format(t),
        [('JsonGenerator', 'g'), ('String', 'fieldname'), ('Double', 'value')],
        throws=['IOException']):
      with java.If(w, 'value != null'):
        w('g.writeNumberField(fieldname, value.doubleValue());')

    w()
    with java.Method(w, 'private', 'void', 'writeField'.format(t),
        [('JsonGenerator', 'g'),
         ('String', 'fieldname'),
         ('BigDecimal', 'value')],
        throws=['IOException']):
      with java.If(w, 'value != null'):
        w('g.writeNumberField(fieldname, value);')

    w()
    with java.Method(w, 'private', 'void', 'writeField'.format(t),
        [('JsonGenerator', 'g'),
         ('String', 'fieldname'),
         ('DateTime', 'value'),
         ('DateTimeFormatter', 'fmt')],
        throws=['IOException']):
      with java.If(w, 'value != null'):
        w('g.writeStringField(fieldname, fmt.print(value));')

    w()
    with java.Method(w, 'private', 'void', 'writeField'.format(t),
        [('JsonGenerator', 'g'),
         ('String', 'fieldname'),
         ('LocalDate', 'value'),
         ('DateTimeFormatter', 'fmt')],
        throws=['IOException']):
      with java.If(w, 'value != null'):
        w('g.writeStringField(fieldname, fmt.print(value));')

    w()
    with java.Method(w, 'private', 'void', 'writeField'.format(t),
        [('JsonGenerator', 'g'), ('String', 'fieldname'), ('UUID', 'value')],
        throws=['IOException']):
      with java.If(w, 'value != null'):
        w('g.writeStringField(fieldname, value.toString());')

    w('\nprivate final DateTimeFormatter iso8601Date = '
      'ISODateTimeFormat.date();')
    w('private final DateTimeFormatter iso8601DateTime = '
      'ISODateTimeFormat.dateTime();')
Exemplo n.º 2
0
def serializer(context):
    (app, module, package, model_class, write_file, _, _) = context

    facade = bool(context.wrapped_model)

    w = writer.Writer('java')

    java.Package(w, package)

    java.StandardImports(w)

    java.Import(w, 'java.text.ParseException')
    w.head()
    java.Import(w, 'javax.xml.stream.XMLStreamException')
    java.Import(w, 'javax.xml.stream.XMLStreamWriter')
    w.head()
    java.Import(w, 'org.joda.time.format.DateTimeFormatter')
    java.Import(w, 'org.joda.time.format.ISODateTimeFormat')

    if facade:
        model_name = syslx.fmt_app_name(context.wrapped_model.name)
        modelpkg = syslx.View(context.wrapped_model.attrs)['package'].s
        w.head()
        java.Import(w, modelpkg + '.*')
    else:
        modelpkg = package

    with java.Class(w,
                    '\n{}XmlSerializer'.format(model_class),
                    write_file,
                    package=package):
        with java.Method(w,
                         '\npublic',
                         'void',
                         'serialize',
                         [(model_class, 'facade' if facade else 'model'),
                          ('XMLStreamWriter', 'xsw')],
                         throws=['XMLStreamException']):
            if facade:
                w('{} model = facade.getModel();', model_name)

            w('xsw.writeStartElement("{}");', model_class)
            for (tname, ft, t) in syslx.sorted_types(context):
                if t.WhichOneof('type') == 'relation':
                    w('serialize(model.get{0}Table(), xsw, "{0}");', tname)
            w('xsw.writeEndElement();')

        for (tname, ft, t) in syslx.sorted_types(context):
            java.SeparatorComment(w)

            if t.WhichOneof('type') in ['relation', 'tuple']:
                with java.Method(w,
                                 '\npublic',
                                 'void',
                                 'serialize',
                                 [(modelpkg + '.' + tname + '.View', 'view'),
                                  ('XMLStreamWriter', 'xsw'),
                                  ('String', 'tag')],
                                 throws=['XMLStreamException']):
                    with java.If(w, 'view == null || view.isEmpty()'):
                        w('return;')
                    if t.WhichOneof('type') == 'relation':
                        w('xsw.writeStartElement("{}List");', tname)
                    order = [
                        o.s for o in syslx.View(t.attrs)['xml_order'].a.elt
                    ]
                    if order:
                        order_logic = []
                        for o in order:
                            order_logic.append(
                                '            i = io.sysl.ExprHelper.doCompare'
                                '(a.get{0}(), b.get{0}());\n'
                                '            if (i != 0) return i;\n'.format(
                                    java.CamelCase(o)))
                        order_by = (
                            '.orderBy(\n'
                            '    new java.util.Comparator<{0}> () {{\n'
                            '        @Override\n'
                            '        public int compare({0} a, {0} b) {{\n'
                            '            int i;\n'
                            '{1}'
                            '            return 0;\n'
                            '        }}\n'
                            '    }})\n').format(tname, ''.join(order_logic))
                    else:
                        order_by = ''

                    with java.For(w, '{} item : view{}',
                                  modelpkg + '.' + tname, order_by):
                        w('serialize(item, xsw, tag);', tname)
                    if t.WhichOneof('type') == 'relation':
                        w('xsw.writeEndElement();')

                with java.Method(w,
                                 '\npublic',
                                 'void',
                                 'serialize',
                                 [(modelpkg + '.' + tname, 'entity'),
                                  ('XMLStreamWriter', 'xsw')],
                                 throws=['XMLStreamException']):
                    w('serialize(entity, xsw, "{}");', tname)

                with java.Method(w,
                                 '\npublic',
                                 'void',
                                 'serialize',
                                 [(modelpkg + '.' + tname, 'entity'),
                                  ('XMLStreamWriter', 'xsw'),
                                  ('String', 'tag')],
                                 throws=['XMLStreamException']):
                    with java.If(w, 'entity == null'):
                        w('return;')
                    w('xsw.writeStartElement(tag);', tname)
                    for wantAttrs in [True, False]:
                        for (fname, f) in datamodel.sorted_fields(t):
                            jfname = java.name(fname)
                            method = java.CamelCase(jfname)
                            tref = datamodel.typeref(f, module)
                            type_ = tref[2]
                            if not type_:
                                continue
                            extra = ''
                            which_type = type_.WhichOneof('type')
                            if which_type == 'primitive':
                                extra = XML_GEN_MAP[type_.primitive]
                                if type_.primitive == type_.DECIMAL:
                                    for c in type_.constraint:
                                        if c.scale:
                                            access = 'round(entity.get{}(), {})'.format(
                                                method, c.scale)
                                            break
                                else:
                                    access = 'entity.get{}()'.format(method)
                            elif which_type == 'enum':
                                access = 'entity.get{}().getValue()'.format(
                                    method)
                            elif which_type == 'tuple':
                                access = 'entity.get{}()'.format(method)
                            else:
                                raise RuntimeError(
                                    'Unexpected field type for XML export: ' +
                                    which_type)
                            if wantAttrs == ('xml_attribute'
                                             in syslx.patterns(f.attrs)):
                                if wantAttrs:
                                    w('serializeAttr("{}", {}{}, xsw);',
                                      jfname, access, extra)
                                else:
                                    if jfname == 'index':
                                        import pdb
                                        pdb.set_trace()
                                    w('serializeField("{}", {}{}, xsw);',
                                      jfname, access, extra)
                    w('xsw.writeEndElement();')

                with java.Method(w,
                                 '\npublic',
                                 'void',
                                 'serializeField',
                                 [('String', 'fieldname'),
                                  (modelpkg + '.' + tname + '.View', 'view'),
                                  ('XMLStreamWriter', 'xsw')],
                                 throws=['XMLStreamException']):
                    with java.If(w, 'view != null && !view.isEmpty()'):
                        w('serialize(view, xsw, fieldname);')

                with java.Method(w,
                                 '\npublic',
                                 'void',
                                 'serializeField',
                                 [('String', 'fieldname'),
                                  (modelpkg + '.' + tname, 'entity'),
                                  ('XMLStreamWriter', 'xsw')],
                                 throws=['XMLStreamException']):
                    with java.If(w, 'entity != null'):
                        w('serialize(entity, xsw, fieldname);')

        def serialize(t, access, extra_args=None):
            with java.Method(
                    w,
                    '\nprivate',
                    'void',
                    'serialize',
                ([(t, 'value')] +
                 (extra_args or []) + [('XMLStreamWriter', 'xsw')]),
                    throws=['XMLStreamException']):
                w('xsw.writeCharacters({});', access)

        serialize('String', 'value')
        serialize('Boolean', 'value.toString()')
        serialize('Integer', 'value.toString()')
        serialize('Double', 'value.toString()')
        serialize('BigDecimal', 'value.toString()')
        serialize('UUID', 'value.toString()')
        serialize('DateTime', 'fmt.print(value)',
                  [('DateTimeFormatter', 'fmt')])
        serialize('LocalDate', 'iso8601Date.print(value)')

        def serializeField(t, access, extra_args=None):
            with java.Method(
                    w,
                    '\nprivate',
                    'void',
                    'serializeField',
                ([('String', 'fieldname'), (t, 'value')] +
                 (extra_args or []) + [('XMLStreamWriter', 'xsw')]),
                    throws=['XMLStreamException']):
                with java.If(w, 'value != null'):
                    w('xsw.writeStartElement(fieldname);')
                    w('serialize(value{}, xsw);',
                      ''.join(', ' + arg for (_, arg) in extra_args or []))
                    w('xsw.writeEndElement();')

            with java.Method(
                    w,
                    '\nprivate',
                    'void',
                    'serializeAttr',
                ([('String', 'fieldname'), (t, 'value')] +
                 (extra_args or []) + [('XMLStreamWriter', 'xsw')]),
                    throws=['XMLStreamException']):
                with java.If(w, 'value != null'):
                    w('xsw.writeAttribute(fieldname, {});', access)

        serializeField('String', 'value')
        serializeField('Boolean', 'value.toString()')
        serializeField('Integer', 'value.toString()')
        serializeField('Double', 'value.toString()')
        serializeField('BigDecimal', 'value.toString()')
        serializeField('UUID', 'value.toString()')
        serializeField('DateTime', 'fmt.print(value)',
                       [('DateTimeFormatter', 'fmt')])
        serializeField('LocalDate', 'iso8601Date.print(value)')

        with java.Method(w, '\nprivate final', 'BigDecimal', 'round',
                         [('BigDecimal', 'd'), ('int', 'scale')]):
            w('return d == null ? d : '
              'd.setScale(scale, java.math.RoundingMode.HALF_UP);')

        w('\nprivate final DateTimeFormatter iso8601Date = '
          'ISODateTimeFormat.date();')
        w('private final DateTimeFormatter iso8601DateTime = '
          'ISODateTimeFormat.dateTime();')
Exemplo n.º 3
0
def deserializer(context):
  (app, module, package, model_class, write_file, _, _) = context

  facade = bool(context.wrapped_model)

  w = writer.Writer('java')

  java.Package(w, package)

  java.StandardImports(w)

  java.Import(w, 'java.io.IOException')
  w.head()
  java.Import(w, 'java.text.ParseException')
  w.head()
  java.Import(w, 'com.fasterxml.jackson.core.JsonParseException')
  java.Import(w, 'com.fasterxml.jackson.core.JsonParser')
  java.Import(w, 'com.fasterxml.jackson.core.JsonToken')
  java.Import(w, 'com.fasterxml.jackson.databind.JsonDeserializer')
  java.Import(w, 'com.fasterxml.jackson.databind.DeserializationContext')
  w.head()
  java.Import(w, 'org.joda.time.format.DateTimeFormatter')
  java.Import(w, 'org.joda.time.format.ISODateTimeFormat')

  if facade:
    model_name = syslx.fmt_app_name(context.wrapped_model.name)
    modelpkg = syslx.View(context.wrapped_model.attrs)['package'].s
    w.head()
    java.Import(w, modelpkg + '.*')
  else:
    model_name = model_class

  has_tables = any(
    t.HasField('relation')
    for (tname, t) in sorted(app.types.iteritems()))

  w()
  with java.Class(w, model_class + 'JsonDeserializer', write_file,
      package=package,
      extends=has_tables and 'JsonDeserializer<' + model_class + '>'):
    if has_tables:
      w()
      with java.Method(w, 'public', model_class, 'deserialize',
          [('JsonParser', 'p'), ('DeserializationContext', 'provider')],
          throws=['IOException', 'JsonParseException'], override=True):
        w('{0} model = new {0}();', model_name)
        w()
        w('eatToken(p, JsonToken.START_OBJECT);')
        with java.While(w, 'p.getCurrentToken() != JsonToken.END_OBJECT'):
          with java.Switch(w, 'eatName(p)'):
            for (tname, t) in sorted(app.types.iteritems()):
              if t.HasField('relation'):
                w(('case "{0}": deserialize{0}Table(p, '
                   'model.get{0}Table()); break;'),
                  tname)
            w('default: skipJson(p);')
        w('expectToken(p, JsonToken.END_OBJECT);')
        w()
        w('return model;')

    for (tname, t) in sorted(app.types.iteritems()):
      if not t.HasField('relation'):
        continue

      pkey = datamodel.primary_key_params(t, context.module)
      pkey_fields = {f for (_, f, _) in pkey}
      fkeys = {
        java.name(fname): type_info
        for (fname, _, type_info) in datamodel.foreign_keys(t, context.module)}

      private_setters = pkey_fields | set(fkeys.iterkeys())

      w()
      with java.Method(w, 'private', 'void', 'deserialize' + tname + 'Table',
          [('JsonParser', 'p'), (tname + '.Table', 'table')],
          throws=['IOException', 'JsonParseException']):
        w('eatToken(p, JsonToken.START_ARRAY);')
        with java.While(w, 'p.getCurrentToken() != JsonToken.END_ARRAY'):
          w('eatToken(p, JsonToken.START_OBJECT);')
          w('{0} entity = {0}._PRIVATE_new(table.model());', tname)
          with java.While(w, 'p.getCurrentToken() != JsonToken.END_OBJECT'):
            with java.Switch(w, u'eatName(p)'):
              for (fname, f) in datamodel.sorted_fields(t):
                jfname = java.name(fname)
                (typename, _, type_) = datamodel.typeref(f, module)
                extra = '{}'
                which_type = type_.WhichOneof('type')
                if which_type == 'primitive':
                  jsontype = JSON_PARSE_MAP[type_.primitive]
                  if isinstance(jsontype, tuple):
                    (jsontype, extra) = jsontype
                elif which_type == 'enum':
                  jsontype = 'IntValue'
                  extra = typename + '.from({})'
                else:
                  raise RuntimeError(
                    'Unexpected field type for JSON export: ' + which_type)
                private = '_PRIVATE_' if jfname in private_setters else ''
                if type_.primitive in [
                    sysl_pb2.Type.DATE, sysl_pb2.Type.DATETIME]:
                  with java.Case(w, '"{}"', jfname):
                    w(('entity.{}set{}('
                       'p.getCurrentToken() == JsonToken.VALUE_NULL'
                       ' ? null : {}); break;'),
                      private,
                      java.CamelCase(jfname),
                      extra.format('p.get{}()'.format(jsontype)))
                else:
                  w(('case "{}": entity.{}set{}(p.getCurrentToken() == '
                     'JsonToken.VALUE_NULL ? null : {}); break;'),
                    jfname,
                    private,
                    java.CamelCase(jfname),
                    extra.format('p.get{}()'.format(jsontype)))
              with java.Default(w):
                w('skipJson(p);')
                w('continue;')
            w('p.nextToken();')
          w('p.nextToken();')
          w()
          w('table.insert(entity);')
        w('p.nextToken();')

    with java.Method(w, '\nprivate', 'void', 'eatToken',
        [('JsonParser', 'p'), ('JsonToken', 'token')],
        throws=['IOException']):
      w(u'expectToken(p, token);')
      w(u'p.nextToken();')

    with java.Method(w, '\nprivate', 'void', 'expectToken',
        [('JsonParser', 'p'), ('JsonToken', 'token')]):
      with java.If(w, 'p.getCurrentToken() != token'):
        w(('System.err.printf("<<Unexpected token: %s (expecting %s)>>\\n", '
           'tokenName(p.getCurrentToken()), tokenName(token));'))
        w('throw new {}Exception();', model_name)

    with java.Method(w, '\nprivate', 'String', 'eatName', [('JsonParser', 'p')],
        throws=['IOException']):
      w('expectToken(p, JsonToken.FIELD_NAME);')
      w('String name = p.getCurrentName();')
      w('p.nextToken();')
      w('return name;')

    with java.Method(w, '\nprivate', 'String', 'tokenName',
        [('JsonToken', 'token')]):
      with java.If(w, 'token == null'):
        w('return "null";')
      with java.Switch(w, 'token'):
        for tok in (
          'END_ARRAY END_OBJECT FIELD_NAME NOT_AVAILABLE START_ARRAY '
          'START_OBJECT VALUE_EMBEDDED_OBJECT VALUE_FALSE VALUE_NULL '
          'VALUE_NUMBER_FLOAT VALUE_NUMBER_INT VALUE_STRING VALUE_TRUE'
          ).split():
          w('case {0}: return "{0}";', tok);
      w('return "";')

    # TODO: refactor into base class
    # TODO: replace recursion with depth counter
    with java.Method(w, '\nprivate', 'void', 'skipJson', [('JsonParser', 'p')],
        throws=['IOException']):
      w('JsonToken tok = p.getCurrentToken();')
      w('p.nextToken();')
      with java.Switch(w, 'tok'):
        for tok in (
          'VALUE_FALSE VALUE_NULL VALUE_NUMBER_FLOAT VALUE_NUMBER_INT '
          'VALUE_STRING VALUE_TRUE').split():
          w('case {}: break;', tok)
        with java.Case(w, 'START_ARRAY'):
          with java.While(w, 'p.getCurrentToken() != JsonToken.END_ARRAY'):
            w('skipJson(p);')
          w('p.nextToken();')
          w('break;')
        with java.Case(w, 'START_OBJECT'):
          with java.While(w, 'p.getCurrentToken() != JsonToken.END_OBJECT'):
            w('p.nextToken();')
            w('skipJson(p);')
          w('p.nextToken();')
          w('break;')

    # TODO: Is permissive dateTimeParser OK for date types?
    w('\nprivate final DateTimeFormatter iso8601DateTime = '
      'ISODateTimeFormat.dateTimeParser();')

    w()
Exemplo n.º 4
0
def deserializer(context):
    (app, module, package, model_class, write_file, _, _) = context

    facade = bool(context.wrapped_model)

    w = writer.Writer('java')

    java.Package(w, package)

    java.StandardImports(w)

    java.Import(w, 'javax.xml.stream.XMLStreamConstants')
    java.Import(w, 'javax.xml.stream.XMLStreamException')
    java.Import(w, 'javax.xml.stream.XMLStreamReader')
    w.head()
    java.Import(w, 'java.text.ParseException')
    w.head()
    java.Import(w, 'org.joda.time.format.DateTimeFormatter')
    java.Import(w, 'org.joda.time.format.ISODateTimeFormat')

    if facade:
        model_name = syslx.fmt_app_name(context.wrapped_model.name)
        modelpkg = syslx.View(context.wrapped_model.attrs)['package'].s
        w.head()
        java.Import(w, modelpkg + '.*')
    else:
        model_name = model_class
        modelpkg = package

    with java.Class(w,
                    '\n{}XmlDeserializer'.format(model_class),
                    write_file,
                    package=package):
        with java.Method(
                w,
                'public',
                'void',
                'deserialize', [(model_class, 'facade' if facade else 'model'),
                                ('XMLStreamReader', 'xsr')],
                throws=[model_name + 'Exception', 'XMLStreamException']):
            if facade:
                w('{} model = facade.getModel();', model_name)
            w('expect(XMLStreamConstants.START_ELEMENT, xsr.next());')
            with java.While(w,
                            'xsr.next() == XMLStreamConstants.START_ELEMENT'):
                with java.Switch(w, 'xsr.getLocalName()'):
                    for (tname, ft, t) in syslx.sorted_types(context):
                        if t.HasField('relation'):
                            w(
                                'case "{0}List": deserialize(model.get{0}Table(), xsr); break;',
                                tname)
                            w(
                                'case "{0}": deserializeOne(model.get{0}Table(), xsr); break;',
                                tname)
                    w('default: skipElement(xsr);')
            w('expect(XMLStreamConstants.END_ELEMENT, xsr.getEventType());')

        for (tname, ft, t) in syslx.sorted_types(context):
            pkey = datamodel.primary_key_params(t, context.module)
            pkey_fields = {f for (_, f, _) in pkey}
            fkeys = {
                java.name(fname): type_info
                for (fname, _,
                     type_info) in datamodel.foreign_keys(t, context.module)
            }

            private_setters = pkey_fields | set(fkeys.iterkeys())

            if not t.HasField('relation'):
                continue
            with java.Method(w,
                             '\nprivate',
                             'void',
                             'deserialize',
                             [(modelpkg + '.' + tname + '.Table', 'table'),
                              ('XMLStreamReader', 'xsr')],
                             throws=['XMLStreamException']):
                with java.While(
                        w, 'xsr.next() == XMLStreamConstants.START_ELEMENT'):
                    w('deserializeOne(table, xsr);')
                w('expect(XMLStreamConstants.END_ELEMENT, xsr.getEventType());'
                  )

            with java.Method(w,
                             '\nprivate',
                             'void',
                             'deserializeOne',
                             [(modelpkg + '.' + tname + '.Table', 'table'),
                              ('XMLStreamReader', 'xsr')],
                             throws=['XMLStreamException']):
                w('{0} entity = {0}._PRIVATE_new(table.model());',
                  modelpkg + '.' + tname)
                with java.While(
                        w, 'xsr.next() == XMLStreamConstants.START_ELEMENT'):
                    with java.Switch(w, 'xsr.getLocalName()'):
                        for (fname, f) in datamodel.sorted_fields(t):
                            jfname = java.name(fname)
                            (typename, _, type_) = datamodel.typeref(f, module)
                            extra = '{}'
                            which_type = type_.WhichOneof('type')
                            if which_type == 'primitive':
                                xmltype = XML_PARSE_MAP[type_.primitive]
                                if isinstance(xmltype, tuple):
                                    (xmltype, extra) = xmltype
                            elif which_type == 'enum':
                                xmltype = 'IntValue'
                                extra = typename + '.from({})'
                            else:
                                raise RuntimeError(
                                    'Unexpected field type for XML export: ' +
                                    which_type)

                            private = '_PRIVATE_' if jfname in private_setters else ''

                            if type_.primitive in [
                                    sysl_pb2.Type.DATE, sysl_pb2.Type.DATETIME
                            ]:
                                w(
                                    'case "{}": entity.{}set{}(read{}(xsr, {})); break;',
                                    jfname, private, java.CamelCase(jfname),
                                    typename, extra)
                            else:
                                w(
                                    'case "{}": entity.{}set{}(read{}(xsr)); break;',
                                    jfname, private, java.CamelCase(jfname),
                                    typename)
                        w('default: skipField(xsr);')
                w('table.insert(entity);')
                w('expect(XMLStreamConstants.END_ELEMENT, xsr.getEventType());'
                  )

        with java.Method(w, '\nprivate', 'void', 'expect',
                         [('int', 'expected'), ('int', 'got')]):
            with java.If(w, 'got != expected'):
                w('System.err.printf(\v'
                  '"<<Unexpected token: %s (expecting %s)>>\\n", \v'
                  'tokenName(got), tokenName(expected));')
                w('throw new {}Exception();', model_name)

        with java.Method(w, '\nprivate', 'String', 'tokenName',
                         [('int', 'token')]):
            with java.Switch(w, 'token'):
                for tok in (
                        'ATTRIBUTE CDATA CHARACTERS COMMENT DTD END_DOCUMENT '
                        'END_ELEMENT ENTITY_DECLARATION ENTITY_REFERENCE NAMESPACE '
                        'NOTATION_DECLARATION PROCESSING_INSTRUCTION SPACE START_DOCUMENT '
                        'START_ELEMENT'.split()):
                    w('case XMLStreamConstants.{0}: return "{0}";', tok)
            w('return new Integer(token).toString();')

        def read(t, access, extra_args=None):
            with java.Method(w,
                             '\nprivate',
                             t,
                             'read' + t, [('XMLStreamReader', 'xsr')],
                             throws=['XMLStreamException']):
                with java.If(w, '!getCharacters(xsr)'):
                    w('return null;')
                w('{} result = {};', t, access)
                w('expect(XMLStreamConstants.END_ELEMENT, xsr.next());')
                w('return result;')

        read('String', 'xsr.getText()')
        read('Boolean', 'Boolean.parseBoolean(xsr.getText())')
        read('Integer', 'Integer.parseInt(xsr.getText())')
        read('Double', 'Double.parseDouble(xsr.getText())')
        read('BigDecimal', 'new BigDecimal(xsr.getText())')
        read('UUID', 'UUID.fromString(xsr.getText())')

        with java.Method(w,
                         '\nprivate',
                         'DateTime',
                         'readDateTime', [('XMLStreamReader', 'xsr'),
                                          ('DateTimeFormatter', 'fmt')],
                         throws=['XMLStreamException']):
            with java.If(w, '!getCharacters(xsr)'):
                w('return null;')
            w('DateTime result = fmt.parseDateTime(xsr.getText());')
            w('expect(XMLStreamConstants.END_ELEMENT, xsr.next());')
            w('return result;')

        with java.Method(w,
                         '\nprivate',
                         'LocalDate',
                         'readLocalDate', [('XMLStreamReader', 'xsr'),
                                           ('DateTimeFormatter', 'fmt')],
                         throws=['XMLStreamException']):
            with java.If(w, '!getCharacters(xsr)'):
                w('return null;')
            w('LocalDate result = fmt.parseLocalDate(xsr.getText());')
            w('expect(XMLStreamConstants.END_ELEMENT, xsr.next());')
            w('return result;')

        with java.Method(w,
                         '\nprivate',
                         'void',
                         'skipField', [('XMLStreamReader', 'xsr')],
                         throws=['XMLStreamException']):
            with java.If(w, 'getCharacters(xsr)'):
                w('expect(XMLStreamConstants.END_ELEMENT, xsr.next());')

        with java.Method(w,
                         '\nprivate',
                         'boolean',
                         'getCharacters', [('XMLStreamReader', 'xsr')],
                         throws=['XMLStreamException']):
            w('int tok = xsr.next();')
            with java.If(w, 'tok == XMLStreamConstants.END_ELEMENT'):
                w('return false;')
            w('expect(XMLStreamConstants.CHARACTERS, tok);')
            w('return true;')

        with java.Method(w,
                         '\nprivate',
                         'void',
                         'skipElement', [('XMLStreamReader', 'xsr')],
                         throws=['XMLStreamException']):
            with java.While(w, 'xsr.next() != XMLStreamConstants.END_ELEMENT'):
                with java.If(
                        w,
                        'xsr.getEventType() == XMLStreamConstants.START_ELEMENT'
                ):
                    w('skipElement(xsr);')

        # TODO: Is permissive dateTimeParser OK for date types?
        w('\nprivate final DateTimeFormatter iso8601DateTime = '
          'ISODateTimeFormat.dateTimeParser();')

        w()