108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
/*
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Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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// Implements the function defined in ndb_dd_sdi.h
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#include "storage/ndb/plugin/ndb_dd_sdi.h"
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// Using
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#include "my_rapidjson_size_t.h" // IWYU pragma: keep
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#include <rapidjson/document.h> // rapidjson::Document
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#include <rapidjson/prettywriter.h> // rapidjson::PrettyWriter
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#include <rapidjson/stringbuffer.h>
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#include <rapidjson/writer.h> // rapidjson::Writer
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#include "sql/dd/impl/sdi.h"
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#include "sql/dd/sdi_fwd.h"
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#include "sql/dd/string_type.h"
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typedef rapidjson::Writer<dd::RJ_StringBuffer, dd::RJ_Encoding, dd::RJ_Encoding,
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dd::RJ_Allocator, 0>
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MinifyWriter;
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typedef rapidjson::PrettyWriter<dd::RJ_StringBuffer, dd::RJ_Encoding,
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dd::RJ_Encoding, dd::RJ_Allocator, 0>
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PrettyWriter;
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#ifndef DBUG_OFF
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/*
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@brief minify a JSON formatted SDI. Remove whitespace and other
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useless data.
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@note the JSON format is normally in 'pretty' format which takes
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up much more storage space and network bandwidth than 'minified' format.
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@sdi the JSON string to minify
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@return minified JSON string or empty string on failure.
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*/
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static dd::sdi_t minify(dd::sdi_t sdi) {
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dd::RJ_Document doc;
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doc.Parse<0>(sdi.c_str());
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if (doc.HasParseError()) {
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return "";
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}
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dd::RJ_StringBuffer buf;
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MinifyWriter w(buf);
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if (!doc.Accept(w)) {
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return "";
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}
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return buf.GetString();
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}
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#endif
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dd::sdi_t ndb_dd_sdi_prettify(dd::sdi_t sdi) {
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dd::RJ_Document doc;
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doc.Parse<0>(sdi.c_str());
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if (doc.HasParseError()) {
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return "";
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}
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dd::RJ_StringBuffer buf;
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PrettyWriter w(buf);
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if (!doc.Accept(w)) {
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return "";
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}
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return buf.GetString();
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}
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bool ndb_dd_sdi_deserialize(THD *thd, const dd::sdi_t &sdi, dd::Table *table) {
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return dd::deserialize(thd, sdi, table);
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}
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dd::sdi_t ndb_dd_sdi_serialize(THD *thd, const dd::Table &table,
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const dd::String_type &schema_name) {
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#ifndef DBUG_OFF
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// Verify that dd::serialize generates SDI in minimzed format
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dd::sdi_t sdi = dd::serialize(thd, table, schema_name);
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DBUG_ASSERT(minify(sdi) == sdi);
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#endif
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return dd::serialize(thd, table, schema_name);
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}
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