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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
|
/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Sun Microsystems, Inc.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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 <config.h>
#include <plugin/function_engine/function.h>
#include <plugin/function_engine/cursor.h>
#include <string>
using namespace std;
using namespace drizzled;
Function::Function(const std::string &name_arg) :
drizzled::plugin::StorageEngine(name_arg,
HTON_ALTER_NOT_SUPPORTED |
HTON_HAS_SCHEMA_DICTIONARY |
HTON_SKIP_STORE_LOCK |
HTON_TEMPORARY_NOT_SUPPORTED),
information_message(new(message::Schema)),
data_dictionary_message(new(message::Schema))
{
information_message->set_name(INFORMATION_SCHEMA_IDENTIFIER.getSchemaName());
information_message->set_collation("utf8_general_ci");
message::set_is_replicated(*information_message, false);
data_dictionary_message->set_name(DATA_DICTIONARY_IDENTIFIER.getSchemaName());
data_dictionary_message->set_collation("utf8_general_ci");
message::set_is_replicated(*data_dictionary_message, false);
}
Cursor *Function::create(Table &table)
{
return new FunctionCursor(*this, table);
}
int Function::doGetTableDefinition(Session &,
const identifier::Table &identifier,
message::Table &table_proto)
{
drizzled::plugin::TableFunction *function= getFunction(identifier.getPath());
if (not function)
{
return ENOENT;
}
function->define(table_proto);
return EEXIST;
}
void Function::doGetSchemaIdentifiers(identifier::Schema::vector& schemas)
{
schemas.push_back(INFORMATION_SCHEMA_IDENTIFIER);
schemas.push_back(DATA_DICTIONARY_IDENTIFIER);
}
drizzled::message::schema::shared_ptr Function::doGetSchemaDefinition(const identifier::Schema &schema_identifier)
{
drizzled::message::schema::shared_ptr schema_message;
if (schema_identifier == INFORMATION_SCHEMA_IDENTIFIER)
{
schema_message= information_message;
}
else if (schema_identifier == DATA_DICTIONARY_IDENTIFIER)
{
schema_message= data_dictionary_message;
}
else
{
return drizzled::message::schema::shared_ptr();
}
return schema_message;
}
bool Function::doCanCreateTable(const drizzled::identifier::Table &table_identifier)
{
if (static_cast<const identifier::Schema&>(table_identifier) == INFORMATION_SCHEMA_IDENTIFIER)
{
return false;
}
else if (static_cast<const identifier::Schema&>(table_identifier) == DATA_DICTIONARY_IDENTIFIER)
{
return false;
}
return true;
}
bool Function::doDoesTableExist(Session&, const identifier::Table &identifier)
{
drizzled::plugin::TableFunction *function= getFunction(identifier.getPath());
if (function)
return true;
return false;
}
void Function::doGetTableIdentifiers(drizzled::CachedDirectory&,
const drizzled::identifier::Schema &schema_identifier,
drizzled::identifier::Table::vector &set_of_identifiers)
{
set<std::string> set_of_names;
drizzled::plugin::TableFunction::getNames(schema_identifier.getSchemaName(), set_of_names);
for (set<std::string>::iterator iter= set_of_names.begin(); iter != set_of_names.end(); iter++)
{
set_of_identifiers.push_back(identifier::Table(schema_identifier, *iter, drizzled::message::Table::FUNCTION));
}
}
static int init(drizzled::module::Context &context)
{
context.add(new Function("FunctionEngine"));
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"FunctionEngine",
"1.0",
"Brian Aker",
"Function Engine provides the infrastructure for Table Functions,etc.",
PLUGIN_LICENSE_GPL,
init, /* Plugin Init */
NULL, /* depends */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
|