我试图创建一个flume-thrift客户端在c(cïglib),但有困难创建gobject,应发送到服务器。在main.c中的行中出现以下错误:
`GLib-GObject-WARNING**: IA__g_object_new_valist: object class `ThriftFlumeEventType' has no property named `timestamp'`
flume\u types.h和flume\u types.c中的代码是由thrift自动生成的。告诉我你是否需要看更多的代码。我感谢所有能得到的帮助!
flume\u types.h中的部分代码:
struct _ThriftFlumeEvent
{
ThriftStruct parent;
/* public */
gint64 timestamp;
gboolean __isset_timestamp;
Priority priority;
gboolean __isset_priority;
GByteArray * body;
gboolean __isset_body;
gint64 nanos;
gboolean __isset_nanos;
gchar * host;
gboolean __isset_host;
GHashTable * fields;
gboolean __isset_fields;
};
typedef struct _ThriftFlumeEvent ThriftFlumeEvent;
GType thrift_flume_event_get_type (void);
# define TYPE_THRIFT_FLUME_EVENT (thrift_flume_event_get_type())
flume\u types.c中的部分代码:
void
thrift_flume_event_instance_init (ThriftFlumeEvent * object)
{
printf("thrift_flume_event_instance_init");
/* satisfy -Wall */
THRIFT_UNUSED_VAR (object);
object->timestamp = 0;
object->__isset_timestamp = FALSE;
object->__isset_priority = FALSE;
object->body = NULL;
object->__isset_body = FALSE;
object->nanos = 0;
object->__isset_nanos = FALSE;
object->host = NULL;
object->__isset_host = FALSE;
object->fields = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
object->__isset_fields = FALSE;
}
GType
thrift_flume_event_get_type (void)
{
static GType type = 0;
if (type == 0)
{
static const GTypeInfo type_info =
{
sizeof (ThriftFlumeEventClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) thrift_flume_event_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (ThriftFlumeEvent),
0, /* n_preallocs */
(GInstanceInitFunc) thrift_flume_event_instance_init,
NULL, /* value_table */
};
type = g_type_register_static (THRIFT_TYPE_STRUCT,
"ThriftFlumeEventType",
&type_info, 0);
type.timestamp;
}
return type;
}
main.c中的部分代码:
gpointer eventObj = g_object_new(TYPE_THRIFT_FLUME_EVENT,
"timestamp", 0,
"__isset_timestamp", 0,
"priority", 0,
"__isset_priority", 0,
"body", 0,
"__isset_body", 0,
"nanos", 0,
"__isset_nanos", 0,
"fields", 0,
"__isset_fields", 0,
0);
3条答案
按热度按时间k5hmc34c1#
这在thrift 0.9.2中发生了变化:c(glib)编译器生成的表示thrift结构的对象现在将其成员公开为gobject属性,从而避免了直接修改对象示例结构的危险(和糟糕)做法。
从0.9.2开始,初始化struct对象的首选方法基本上是海报最初期望的方法:
注意
__isset_
字段由对象本身管理,不应直接设置。cwxwcias2#
这就是问题的解决方案:
lnlaulya3#
GObject
属性不是c结构成员。您需要通过g_object_install_property
在klass init函数(https://developer.gnome.org/gobject/stable/gobject-the-base-object-type.html ). 您还需要从GObject
(或从GObject
).注意:在c中派生意味着它必须将父级作为其第一个成员,这样才能无缝地转换它(而不是指向
GObject
!)你应该读一本关于这个主题的书,它可能会变得相当复杂。