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/* vim: expandtab:shiftwidth=2:tabstop=2:smarttab:
Copyright (C) 2009 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; 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 <config.h>
#include <drizzled/charset.h>
#include <drizzled/error.h>
#include <drizzled/function/str/strfunc.h>
#include <drizzled/internal/my_sys.h>
#include <drizzled/item/func.h>
#include <drizzled/message/schema.h>
#include <drizzled/plugin/function.h>
#include <drizzled/plugin/storage_engine.h>
#include <iostream>
#include <stdio.h>
#include <string>
#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_str();
string proto_as_text("");
message::schema::shared_ptr proto;
identifier::Schema schema_identifier(db);
if (not (proto= plugin::StorageEngine::getSchemaDefinition(schema_identifier)))
{
my_error(ER_BAD_DB_ERROR, schema_identifier);
return NULL;
}
protobuf::TextFormat::PrintToString(*proto, &proto_as_text);
str->alloc(proto_as_text.length());
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(module::Context &context)
{
show_schema_proto_func= new plugin::Create_function<ShowSchemaProtoFunction>("show_schema_proto");
context.add(show_schema_proto_func);
return 0;
}
DRIZZLE_DECLARE_PLUGIN
{
DRIZZLE_VERSION_ID,
"show_schema_proto",
"1.0",
"Stewart Smith",
"Shows text representation of schema definition proto",
PLUGIN_LICENSE_GPL,
initialize, /* Plugin Init */
NULL, /* depends */
NULL /* config options */
}
DRIZZLE_DECLARE_PLUGIN_END;
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