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MySQL 5.1: Item_nodeset_func Class Reference

Item_nodeset_func Class Reference

Inheritance diagram for Item_nodeset_func:

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Public Member Functions
	Item_nodeset_func (String *pxml_arg)
	Item_nodeset_func (Item a, String pxml_arg)
	Item_nodeset_func (Item a, Item b, String *pxml_arg)
	Item_nodeset_func (Item a, Item b, Item c, String pxml_arg)
void	prepare_nodes ()
void	prepare (String *nodeset)
enum Type	type () const
String *	val_str (String *str)
enum Item_result	result_type () const
void	fix_length_and_dec ()
const char *	func_name () const
Public Attributes
String *	pxml
String	context_cache
Protected Attributes
String	tmp_value
String	tmp2_value
MY_XPATH_FLT *	fltbeg
MY_XPATH_FLT *	fltend
MY_XML_NODE *	nodebeg
MY_XML_NODE *	nodeend
uint	numnodes

Detailed Description

Definition at line 151 of file item_xmlfunc.cc.

Constructor & Destructor Documentation

Item_nodeset_func::Item_nodeset_func ( String * pxml_arg ) [inline]

Definition at line 161 of file item_xmlfunc.cc.

00161 :Item_str_func(), pxml(pxml_arg) {}

Item_nodeset_func::Item_nodeset_func	(	Item *	a,
		String *	pxml_arg
	)			`[inline]`

Definition at line 162 of file item_xmlfunc.cc.

00163     :Item_str_func(a), pxml(pxml_arg) {}

Item_nodeset_func::Item_nodeset_func	(	Item *	a,
		Item *	b,
		String *	pxml_arg
	)			`[inline]`

Definition at line 164 of file item_xmlfunc.cc.

00165     :Item_str_func(a, b), pxml(pxml_arg) {}

Item_nodeset_func::Item_nodeset_func	(	Item *	a,
		Item *	b,
		Item *	c,
		String *	pxml_arg
	)			`[inline]`

Definition at line 166 of file item_xmlfunc.cc.

00167     :Item_str_func(a,b,c), pxml(pxml_arg) {}

Member Function Documentation

void Item_nodeset_func::fix_length_and_dec ( ) [inline, virtual]

Implements Item_result_field.

Reimplemented in Item_nodeset_context_cache.

Definition at line 218 of file item_xmlfunc.cc.

References String::charset(), DTCollation::collation, Item::collation, MAX_BLOB_WIDTH, Item::max_length, and pxml.

00219   {
00220     max_length= MAX_BLOB_WIDTH;
00221     collation.collation= pxml->charset();
00222   }

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const char* Item_nodeset_func::func_name ( ) const [inline, virtual]

Implements Item_func.

Reimplemented in Item_nodeset_func_rootelement, Item_nodeset_func_union, Item_nodeset_func_axisbyname, Item_nodeset_func_selfbyname, Item_nodeset_func_childbyname, Item_nodeset_func_descendantbyname, Item_nodeset_func_ancestorbyname, Item_nodeset_func_parentbyname, Item_nodeset_func_attributebyname, Item_nodeset_func_predicate, and Item_nodeset_func_elementbyindex.

Definition at line 223 of file item_xmlfunc.cc.

00223 { return "nodeset"; }

void Item_nodeset_func::prepare ( String * nodeset ) [inline]

Definition at line 174 of file item_xmlfunc.cc.

References Item_func::args, fltbeg, fltend, String::length(), prepare_nodes(), String::ptr(), tmp_value, and Item::val_nodeset().

Referenced by Item_nodeset_func_elementbyindex::val_nodeset(), Item_nodeset_func_predicate::val_nodeset(), Item_nodeset_func_attributebyname::val_nodeset(), Item_nodeset_func_parentbyname::val_nodeset(), Item_nodeset_func_ancestorbyname::val_nodeset(), Item_nodeset_func_descendantbyname::val_nodeset(), Item_nodeset_func_childbyname::val_nodeset(), and Item_nodeset_func_selfbyname::val_nodeset().

00175   {
00176     prepare_nodes();
00177     String *res= args[0]->val_nodeset(&tmp_value);
00178     fltbeg= (MY_XPATH_FLT*) res->ptr();
00179     fltend= (MY_XPATH_FLT*) (res->ptr() + res->length());
00180     nodeset->length(0);
00181   }

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void Item_nodeset_func::prepare_nodes ( ) [inline]

Definition at line 168 of file item_xmlfunc.cc.

References String::length(), nodebeg, nodeend, numnodes, String::ptr(), and pxml.

Referenced by prepare(), and val_str().

00169   {
00170     nodebeg= (MY_XML_NODE*) pxml->ptr();
00171     nodeend= (MY_XML_NODE*) (pxml->ptr() + pxml->length());
00172     numnodes= nodeend - nodebeg;
00173   }

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enum Item_result Item_nodeset_func::result_type ( ) const [inline, virtual]

Reimplemented from Item_str_func.

Definition at line 217 of file item_xmlfunc.cc.

References STRING_RESULT.

00217 { return STRING_RESULT; }

enum Type Item_nodeset_func::type ( ) const [inline, virtual]

Reimplemented from Item_func.

Definition at line 182 of file item_xmlfunc.cc.

References Item::XPATH_NODESET.

00182 { return XPATH_NODESET; }

String* Item_nodeset_func::val_str ( String * str ) [inline, virtual]

Implements Item.

Definition at line 183 of file item_xmlfunc.cc.

References String::alloc(), String::append(), bzero, DTCollation::collation, Item::collation, fltbeg, fltend, String::length(), my_charset_latin1, MY_XML_NODE_TEXT, nodebeg, numnodes, prepare_nodes(), String::ptr(), String::set_charset(), tmp2_value, and Item::val_nodeset().

00184   {
00185     prepare_nodes();
00186     String *res= val_nodeset(&tmp2_value);
00187     fltbeg= (MY_XPATH_FLT*) res->ptr();
00188     fltend= (MY_XPATH_FLT*) (res->ptr() + res->length());
00189     String active;
00190     active.alloc(numnodes);
00191     bzero((char*) active.ptr(), numnodes);
00192     for (MY_XPATH_FLT *flt= fltbeg; flt < fltend; flt++)
00193     {
00194       MY_XML_NODE *node;
00195       uint j;
00196       for (j=0, node= nodebeg ; j < numnodes; j++, node++)
00197       {
00198         if (node->type == MY_XML_NODE_TEXT &&
00199             node->parent == flt->num)
00200           active[j]= 1;
00201       }
00202     }
00203 
00204     str->length(0);
00205     str->set_charset(collation.collation);
00206     for (uint i=0 ; i < numnodes; i++)
00207     {
00208       if(active[i])
00209       {
00210         if (str->length())
00211           str->append(" ", 1, &my_charset_latin1);
00212         str->append(nodebeg[i].beg, nodebeg[i].end - nodebeg[i].beg);
00213       }
00214     }
00215     return str;
00216   }