1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/* vim: expandtab:shiftwidth=2:tabstop=2:smarttab:
Copyright (C) 2009 Sun Microsystems
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#include <drizzled/server_includes.h>
#include <drizzled/plugin/function.h>
#include <drizzled/item/func.h>
#include <drizzled/function/str/strfunc.h>
#include <drizzled/error.h>
#include <drizzled/current_session.h>
#include <drizzled/db.h>
#include <stdio.h>
#include <iostream>
#include <string>
#include <drizzled/message/schema.pb.h>
#include <google/protobuf/io/zero_copy_stream.h>
#include <google/protobuf/io/zero_copy_stream_impl.h>
#include <google/protobuf/text_format.h>
using namespace std;
using namespace drizzled;
using namespace google;
class ShowSchemaProtoFunction : public Item_str_func
{
public:
ShowSchemaProtoFunction() : Item_str_func() {}
String *val_str(String*);
void fix_length_and_dec()
{
max_length= 16384; /* Guesswork? */
args[0]->collation.set(
get_charset_by_csname(args[0]->collation.collation->csname,
MY_CS_BINSORT), DERIVATION_COERCIBLE);
}
const char *func_name() const
{
return "show_schema_proto";
}
bool check_argument_count(int n)
{
return (n == 1);
}
};
String *ShowSchemaProtoFunction::val_str(String *str)
{
assert(fixed == true);
String *db_sptr= args[0]->val_str(str);
if (db_sptr == NULL)
{
null_value= true;
return NULL;
}
null_value= false;
const char* db= db_sptr->c_ptr_safe();
string proto_as_text("");
message::Schema proto;
int err= get_database_metadata(db, &proto);
if (err != 0)
{
my_error(ER_BAD_DB_ERROR, MYF(0), db);
return NULL;
}
protobuf::TextFormat::PrintToString(proto, &proto_as_text);
if (str->alloc(proto_as_text.length()))
{
null_value= true;
return NULL;
}
str->length(proto_as_text.length());
strncpy(str->ptr(),proto_as_text.c_str(), proto_as_text.length());
return str;
}
plugin::Create_function<ShowSchemaProtoFunction> *show_schema_proto_func= NULL;
static int initialize(plugin::Registry ®istry)
{
show_schema_proto_func= new plugin::Create_function<ShowSchemaProtoFunction>("show_schema_proto");
registry.add(show_schema_proto_func);
return 0;
}
static int finalize(plugin::Registry ®istry)
{
registry.remove(show_schema_proto_func);
delete show_schema_proto_func;
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
"show_schema_proto",
"1.0",
"Stewart Smith",
"Shows text representation of schema definition proto",
PLUGIN_LICENSE_GPL,
initialize, /* Plugin Init */
finalize, /* Plugin Deinit */
NULL, /* status variables */
NULL, /* system variables */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
|