XpathParser Class Reference

Detailed Description

The consumer (e.g. XmlDb::getNodeIdsByXpath) receives pre-parsed objects carrying all condition data, avoiding repeated parser calls inside the element iteration loop. SQL assembly is done in the caller so the XpathParser remains SQL-independent and potentially reusable.

Definition at line 15 of file XpathParser.php.

Public Member Functions
	parseXpathElements (string $xpath)
	parsePosition ($condition)
	parseAttributes ($condition)
	translateName ($ns, $name)
	getConditionOperator ($ns, $name)
	getConditionAttributes ($conditionString, $strings)
	cleanOperator ($operator)

Protected Member Functions
	removeLiteralStrings ($text, &$strings)

Member Function Documentation

cleanOperator()

cleanOperator

(

$operator

)

Parameters

string

$operator

xpath operator string

Returns

string cleaned/validated operator

Exceptions

XmlDbException

if operator is invalid

Definition at line 168 of file XpathParser.php.

getConditionAttributes()

getConditionAttributes	(		$conditionString,
			$strings )

Parameters

string	$conditionString	cleaned condition string
array	$strings	reference array for literal strings

Returns

array array of condition rows

Definition at line 103 of file XpathParser.php.

getConditionOperator()

getConditionOperator	(		$ns,
			$name )

Parameters

string	$ns	namespace
string	$name	node name

Returns

string 'LIKE' if wildcards detected, '=' otherwise

Definition at line 89 of file XpathParser.php.

parseAttributes()

parseAttributes

(

$condition

)

Parameters

string

$condition

condition string to parse

Returns

array|false array of condition rows or false if invalid

Definition at line 62 of file XpathParser.php.

parsePosition()

parsePosition

(

$condition

)

Parameters

string

$condition

condition string from xpath

Returns

false|array array with ['operator', 'value'] or false if no match

Definition at line 43 of file XpathParser.php.

parseXpathElements()

parseXpathElements

(

string

$xpath

)

Parameters

string

$xpath

XPath string to parse

Returns

XpathElement[] array of parsed XpathElement objects

Definition at line 21 of file XpathParser.php.

removeLiteralStrings()

removeLiteralStrings ( $text, & $strings )

protected

Parameters

string	$text	input text
array	$strings	reference array to populate with extracted literal strings

Returns

string text with literals replaced by placeholders

Definition at line 142 of file XpathParser.php.

translateName()

translateName	(		$ns,
			$name )

Parameters

string	$ns	namespace
string	$name	node name

Returns

string translated name with wildcards replaced by SQL LIKE wildcards

Definition at line 78 of file XpathParser.php.

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The documentation for this class was generated from the following file:

• XpathParser.php