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7332af49e4
- Changed ER(ER_...) to ER_THD(thd, ER_...) when thd was known or if there was many calls to current_thd in the same function. - Changed ER(ER_..) to ER_THD_OR_DEFAULT(current_thd, ER...) in some places where current_thd is not necessary defined. - Removing calls to current_thd when we have access to thd Part of this is optimization (not calling current_thd when not needed), but part is bug fixing for error condition when current_thd is not defined (For example on startup and end of mysqld) Notable renames done as otherwise a lot of functions would have to be changed: - In JOIN structure renamed: examined_rows -> join_examined_rows record_count -> join_record_count - In Field, renamed new_field() to make_new_field() Other things: - Added DBUG_ASSERT(thd == tmp_thd) in Item_singlerow_subselect() just to be safe. - Removed old 'tab' prefix in JOIN_TAB::save_explain_data() and use members directly - Added 'thd' as argument to a few functions to avoid calling current_thd.
123 lines
3.3 KiB
C++
123 lines
3.3 KiB
C++
#ifndef ITEM_XMLFUNC_INCLUDED
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#define ITEM_XMLFUNC_INCLUDED
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/* Copyright (c) 2000-2007 MySQL AB, 2009 Sun Microsystems, Inc.
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Use is subject to license terms.
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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 as published by
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the Free Software Foundation; version 2 of the License.
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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 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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/* This file defines all XML functions */
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#ifdef USE_PRAGMA_INTERFACE
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#pragma interface /* gcc class implementation */
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#endif
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typedef struct my_xml_node_st MY_XML_NODE;
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class Item_xml_str_func: public Item_str_func
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{
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protected:
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/*
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A helper class to store raw and parsed XML.
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*/
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class XML
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{
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bool m_cached;
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String *m_raw_ptr; // Pointer to text representation
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String m_raw_buf; // Cached text representation
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String m_parsed_buf; // Array of MY_XML_NODEs, pointing to raw_buffer
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bool parse();
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void reset()
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{
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m_cached= false;
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m_raw_ptr= (String *) 0;
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}
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public:
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XML() { reset(); }
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void set_charset(CHARSET_INFO *cs) { m_parsed_buf.set_charset(cs); }
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String *raw() { return m_raw_ptr; }
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String *parsed() { return &m_parsed_buf; }
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const MY_XML_NODE *node(uint idx);
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bool cached() { return m_cached; }
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bool parse(String *raw, bool cache);
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bool parse(Item *item, bool cache)
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{
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String *res;
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if (!(res= item->val_str(&m_raw_buf)))
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{
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m_raw_ptr= (String *) 0;
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m_cached= cache;
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return true;
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}
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return parse(res, cache);
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}
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};
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Item *nodeset_func;
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XML xml;
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bool get_xml(XML *xml_arg, bool cache= false)
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{
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if (!cache && xml_arg->cached())
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return xml_arg->raw() == 0;
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return xml_arg->parse(args[0], cache);
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}
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public:
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Item_xml_str_func(Item *a, Item *b):
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Item_str_func(a,b)
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{
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maybe_null= TRUE;
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}
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Item_xml_str_func(Item *a, Item *b, Item *c):
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Item_str_func(a,b,c)
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{
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maybe_null= TRUE;
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}
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bool fix_fields(THD *thd, Item **ref);
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void fix_length_and_dec();
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bool const_item() const
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{
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return const_item_cache && (!nodeset_func || nodeset_func->const_item());
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}
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bool check_vcol_func_processor(uchar *int_arg)
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{
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return trace_unsupported_by_check_vcol_func_processor(func_name());
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}
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};
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class Item_func_xml_extractvalue: public Item_xml_str_func
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{
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public:
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Item_func_xml_extractvalue(Item *a,Item *b) :Item_xml_str_func(a,b) {}
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const char *func_name() const { return "extractvalue"; }
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String *val_str(String *);
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};
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class Item_func_xml_update: public Item_xml_str_func
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{
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String tmp_value2, tmp_value3;
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bool collect_result(String *str,
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const MY_XML_NODE *cut,
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const String *replace);
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public:
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Item_func_xml_update(Item *a,Item *b,Item *c) :Item_xml_str_func(a,b,c) {}
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const char *func_name() const { return "updatexml"; }
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String *val_str(String *);
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};
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#endif /* ITEM_XMLFUNC_INCLUDED */
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