Bug #21836 » 13003_TRUNK_dbal.diff
| class.ux_t3lib_sqlparser.php (working copy) | ||
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*/
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class ux_t3lib_sqlparser extends t3lib_sqlparser {
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// START: Methods originally belonging to t3lib_sqlparser but copied and fixed here as they were not used in Core
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/**
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* Parsing the tablenames in the "FROM [$parseString] WHERE" part of a query into an array.
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* The success of this parsing determines if that part of the query is supported by TYPO3.
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*
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* @param string list of tables, eg. "pages, tt_content" or "pages A, pages B". NOTICE: passed by reference!
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* @param string Regular expressing to STOP parsing, eg. '^(WHERE)([[:space:]]*)'
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* @return array If successful parsing, returns an array, otherwise an error string.
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* @see compileFromTables()
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*/
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public function parseFromTables(&$parseString, $stopRegex = '') {
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// Prepare variables:
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$parseString = $this->trimSQL($parseString);
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$this->lastStopKeyWord = '';
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$this->parse_error = '';
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$stack = array(); // Contains the parsed content
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$pnt = 0; // Pointer to positions in $stack
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$loopExit = 0; // Recursivity brake.
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// $parseString is continously shortend by the process and we keep parsing it till it is zero:
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while (strlen($parseString)) {
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// Looking for the table:
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if ($stack[$pnt]['table'] = $this->nextPart($parseString,'^([[:alnum:]_]+)(,|[[:space:]]+)')) {
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// Looking for stop-keywords before fetching potential table alias:
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if ($stopRegex && ($this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex))) {
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$this->lastStopKeyWord = strtoupper(str_replace(array(' ',"\t","\r","\n"), '', $this->lastStopKeyWord));
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return $stack;
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}
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if (!preg_match('/^(LEFT|RIGHT|JOIN|INNER)[[:space:]]+/i', $parseString)) {
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$stack[$pnt]['as_keyword'] = $this->nextPart($parseString,'^(AS[[:space:]]+)');
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$stack[$pnt]['as'] = $this->nextPart($parseString,'^([[:alnum:]_]+)[[:space:]]*');
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}
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} else return $this->parseError('No table name found as expected in parseFromTables()!', $parseString);
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// Looking for JOIN
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$joinCnt = 0;
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while ($join = $this->nextPart($parseString,'^(LEFT[[:space:]]+JOIN|LEFT[[:space:]]+OUTER[[:space:]]+JOIN|RIGHT[[:space:]]+JOIN|RIGHT[[:space:]]+OUTER[[:space:]]+JOIN|INNER[[:space:]]+JOIN|JOIN)[[:space:]]+')) {
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$stack[$pnt]['JOIN'][$joinCnt]['type'] = $join;
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if ($stack[$pnt]['JOIN'][$joinCnt]['withTable'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+', 1)) {
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if (!preg_match('/^ON[[:space:]]+/i', $parseString)) {
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$stack[$pnt]['JOIN'][$joinCnt]['as_keyword'] = $this->nextPart($parseString, '^(AS[[:space:]]+)');
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$stack[$pnt]['JOIN'][$joinCnt]['as'] = $this->nextPart($parseString, '^([[:alnum:]_]+)[[:space:]]+');
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}
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if (!$this->nextPart($parseString, '^(ON[[:space:]]+)')) {
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return $this->parseError('No join condition found in parseFromTables()!', $parseString);
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}
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$field1 = $this->nextPart($parseString,'^([[:alnum:]_.]+)[[:space:]]*=[[:space:]]*', 1);
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$field2 = $this->nextPart($parseString,'^([[:alnum:]_.]+)[[:space:]]+');
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if ($field1 && $field2) {
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// Explode fields into field and table:
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$tableField = explode('.', $field1, 2);
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$field1 = array();
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if (count($tableField) != 2) {
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$field1['table'] = '';
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$field1['field'] = $tableField[0];
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} else {
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$field1['table'] = $tableField[0];
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$field1['field'] = $tableField[1];
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}
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$tableField = explode('.', $field2, 2);
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$field2 = array();
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if (count($tableField) != 2) {
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$field2['table'] = '';
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$field2['field'] = $tableField[0];
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} else {
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$field2['table'] = $tableField[0];
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$field2['field'] = $tableField[1];
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}
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$stack[$pnt]['JOIN'][$joinCnt]['ON'] = array($field1, $field2);
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$joinCnt++;
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} else return $this->parseError('No join fields found in parseFromTables()!', $parseString);
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} else return $this->parseError('No join table found in parseFromTables()!', $parseString);
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}
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// Looking for stop-keywords:
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if ($stopRegex && $this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex)) {
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$this->lastStopKeyWord = strtoupper(str_replace(array(' ',"\t","\r","\n"), '', $this->lastStopKeyWord));
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return $stack;
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}
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// Looking for comma:
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if (strlen($parseString) && !$this->nextPart($parseString, '^(,)')) {
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return $this->parseError('No comma found as expected in parseFromTables()', $parseString);
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}
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// Increasing pointer:
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$pnt++;
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// Check recursivity brake:
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$loopExit++;
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if ($loopExit > 500) {
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return $this->parseError('More than 500 loops, exiting prematurely in parseFromTables()...', $parseString);
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}
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}
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// Return result array:
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return $stack;
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}
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/**
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* Parsing the WHERE clause fields in the "WHERE [$parseString] ..." part of a query into a multidimensional array.
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* The success of this parsing determines if that part of the query is supported by TYPO3.
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*
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* @param string WHERE clause to parse. NOTICE: passed by reference!
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* @param string Regular expressing to STOP parsing, eg. '^(GROUP BY|ORDER BY|LIMIT)([[:space:]]*)'
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* @return mixed If successful parsing, returns an array, otherwise an error string.
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*/
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public function parseWhereClause(&$parseString, $stopRegex = '') {
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// Prepare variables:
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$parseString = $this->trimSQL($parseString);
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$this->lastStopKeyWord = '';
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$this->parse_error = '';
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$stack = array(0 => array()); // Contains the parsed content
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$pnt = array(0 => 0); // Pointer to positions in $stack
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$level = 0; // Determines parenthesis level
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$loopExit = 0; // Recursivity brake.
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// $parseString is continously shortend by the process and we keep parsing it till it is zero:
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while (strlen($parseString)) {
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// Look for next parenthesis level:
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$newLevel = $this->nextPart($parseString,'^([(])');
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if ($newLevel == '(') { // If new level is started, manage stack/pointers:
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$level++; // Increase level
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$pnt[$level] = 0; // Reset pointer for this level
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$stack[$level] = array(); // Reset stack for this level
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} else { // If no new level is started, just parse the current level:
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// Find "modifier", eg. "NOT or !"
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$stack[$level][$pnt[$level]]['modifier'] = trim($this->nextPart($parseString, '^(!|NOT[[:space:]]+)'));
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// See if condition is EXISTS with a subquery
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if (preg_match('/^EXISTS[[:space:]]*[(]/', $parseString)) {
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$stack[$level][$pnt[$level]]['func']['type'] = $this->nextPart($parseString, '^(EXISTS)');
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$this->nextPart($parseString, '^([(])');
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$stack[$level][$pnt[$level]]['func']['subquery'] = $this->parseSELECT($parseString);
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// Seek to new position in parseString after parsing of the subquery
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$parseString = $stack[$level][$pnt[$level]]['func']['subquery']['parseString'];
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unset($stack[$level][$pnt[$level]]['func']['subquery']['parseString']);
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if (!$this->nextPart($parseString, '^([)])')) {
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return 'No ) parenthesis at end of subquery';
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}
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} else {
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// Support calculated value only for:
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// - "&" (boolean AND)
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// - "+" (addition)
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// - "-" (substraction)
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// - "*" (multiplication)
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// - "/" (division)
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// - "%" (modulo)
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$calcOperators = '&|\+|-|\*|\/|%';
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// Fieldname:
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if ($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)([[:space:]]+|' . $calcOperators . '|<=|>=|<|>|=|!=|IS)')) {
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// Parse field name into field and table:
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$tableField = explode('.', $fieldName, 2);
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if (count($tableField) == 2) {
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$stack[$level][$pnt[$level]]['table'] = $tableField[0];
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$stack[$level][$pnt[$level]]['field'] = $tableField[1];
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} else {
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$stack[$level][$pnt[$level]]['table'] = '';
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$stack[$level][$pnt[$level]]['field'] = $tableField[0];
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}
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} else {
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return $this->parseError('No field name found as expected in parseWhereClause()', $parseString);
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}
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// See if the value is calculated:
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$stack[$level][$pnt[$level]]['calc'] = $this->nextPart($parseString, '^(' . $calcOperators . ')');
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if (strlen($stack[$level][$pnt[$level]]['calc'])) {
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// Finding value for calculation:
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$calc_value = $this->getValue($parseString);
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$stack[$level][$pnt[$level]]['calc_value'] = $calc_value;
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if (count($calc_value) == 1 && is_string($calc_value[0])) {
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// Value is a field, store it to allow DBAL to post-process it (quoting, remapping)
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$tableField = explode('.', $calc_value[0], 2);
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if (count($tableField) == 2) {
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$stack[$level][$pnt[$level]]['calc_table'] = $tableField[0];
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$stack[$level][$pnt[$level]]['calc_field'] = $tableField[1];
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} else {
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$stack[$level][$pnt[$level]]['calc_table'] = '';
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$stack[$level][$pnt[$level]]['calc_field'] = $tableField[0];
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}
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}
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}
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// Find "comparator":
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$stack[$level][$pnt[$level]]['comparator'] = $this->nextPart($parseString, '^(<=|>=|<|>|=|!=|NOT[[:space:]]+IN|IN|NOT[[:space:]]+LIKE|LIKE|IS[[:space:]]+NOT|IS)');
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if (strlen($stack[$level][$pnt[$level]]['comparator'])) {
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if (preg_match('/^CONCAT[[:space:]]*\(/', $parseString)) {
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$this->nextPart($parseString, '^(CONCAT[[:space:]]?[(])');
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$values = array(
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'operator' => 'CONCAT',
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'args' => array(),
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);
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$cnt = 0;
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while ($fieldName = $this->nextPart($parseString, '^([[:alnum:]._]+)')) {
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// Parse field name into field and table:
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$tableField = explode('.', $fieldName, 2);
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if (count($tableField) == 2) {
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$values['args'][$cnt]['table'] = $tableField[0];
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$values['args'][$cnt]['field'] = $tableField[1];
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} else {
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$values['args'][$cnt]['table'] = '';
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$values['args'][$cnt]['field'] = $tableField[0];
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}
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// Looking for comma:
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$this->nextPart($parseString, '^(,)');
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$cnt++;
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}
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// Look for ending parenthesis:
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$this->nextPart($parseString, '([)])');
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$stack[$level][$pnt[$level]]['value'] = $values;
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} else if (t3lib_div::inList('IN,NOT IN', $stack[$level][$pnt[$level]]['comparator']) && preg_match('/^[(][[:space:]]*SELECT[[:space:]]+/', $parseString)) {
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$this->nextPart($parseString, '^([(])');
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$stack[$level][$pnt[$level]]['subquery'] = $this->parseSELECT($parseString);
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// Seek to new position in parseString after parsing of the subquery
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$parseString = $stack[$level][$pnt[$level]]['subquery']['parseString'];
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unset($stack[$level][$pnt[$level]]['subquery']['parseString']);
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if (!$this->nextPart($parseString, '^([)])')) {
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return 'No ) parenthesis at end of subquery';
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}
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} else {
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// Finding value for comparator:
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$stack[$level][$pnt[$level]]['value'] = $this->getValue($parseString, $stack[$level][$pnt[$level]]['comparator']);
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if ($this->parse_error) {
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return $this->parse_error;
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}
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}
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}
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}
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// Finished, increase pointer:
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$pnt[$level]++;
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// Checking if we are back to level 0 and we should still decrease level,
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// meaning we were probably parsing as subquery and should return here:
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if ($level === 0 && preg_match('/^[)]/', $parseString)) {
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// Return the stacks lowest level:
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return $stack[0];
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}
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// Checking if we are back to level 0 and we should still decrease level,
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// meaning we were probably parsing a subquery and should return here:
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if ($level === 0 && preg_match('/^[)]/', $parseString)) {
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// Return the stacks lowest level:
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return $stack[0];
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}
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// Checking if the current level is ended, in that case do stack management:
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while ($this->nextPart($parseString,'^([)])')) {
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$level--; // Decrease level:
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$stack[$level][$pnt[$level]]['sub'] = $stack[$level+1]; // Copy stack
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$pnt[$level]++; // Increase pointer of the new level
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// Make recursivity check:
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$loopExit++;
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if ($loopExit > 500) {
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return $this->parseError('More than 500 loops (in search for exit parenthesis), exiting prematurely in parseWhereClause()...', $parseString);
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}
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}
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// Detecting the operator for the next level:
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$op = $this->nextPart($parseString, '^(AND[[:space:]]+NOT|&&[[:space:]]+NOT|OR[[:space:]]+NOT|OR[[:space:]]+NOT|\|\|[[:space:]]+NOT|AND|&&|OR|\|\|)(\(|[[:space:]]+)');
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if ($op) {
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// Normalize boolean operator
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$op = str_replace(array('&&', '||'), array('AND', 'OR'), $op);
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$stack[$level][$pnt[$level]]['operator'] = $op;
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} elseif (strlen($parseString)) {
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// Looking for stop-keywords:
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if ($stopRegex && $this->lastStopKeyWord = $this->nextPart($parseString, $stopRegex)) {
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$this->lastStopKeyWord = strtoupper(str_replace(array(' ',"\t","\r","\n"), '', $this->lastStopKeyWord));
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return $stack[0];
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} else {
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return $this->parseError('No operator, but parsing not finished in parseWhereClause().', $parseString);
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}
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}
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}
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// Make recursivity check:
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$loopExit++;
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if ($loopExit > 500) {
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return $this->parseError('More than 500 loops, exiting prematurely in parseWhereClause()...', $parseString);
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}
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}
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// Return the stacks lowest level:
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return $stack[0];
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}
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/**
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* Compiles a "FROM [output] WHERE..:" table list based on input array (made with ->parseFromTables())
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*
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* @param array Array of table names, (made with ->parseFromTables())
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* @return string Table name string
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* @see parseFromTables()
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*/
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public function compileFromTables($tablesArray) {
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// Prepare buffer variable:
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$outputParts = array();
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// Traverse the table names:
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if (is_array($tablesArray)) {
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foreach ($tablesArray as $k => $v) {
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// Set table name:
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$outputParts[$k] = $v['table'];
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// Add alias AS if there:
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if ($v['as']) {
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$outputParts[$k] .= ' ' . $v['as_keyword'] . ' ' . $v['as'];
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}
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if (is_array($v['JOIN'])) {
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foreach ($v['JOIN'] as $join) {
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$outputParts[$k] .= ' ' . $join['type'] . ' ' . $join['withTable'];
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// Add alias AS if there:
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if (isset($join['as']) && $join['as']) {
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$outputParts[$k] .= ' ' . $join['as_keyword'] . ' ' . $join['as'];
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}
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$outputParts[$k] .= ' ON ';
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$outputParts[$k] .= ($join['ON'][0]['table']) ? $join['ON'][0]['table'] . '.' : '';
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$outputParts[$k] .= $join['ON'][0]['field'];
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$outputParts[$k] .= '=';
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$outputParts[$k] .= ($join['ON'][1]['table']) ? $join['ON'][1]['table'] . '.' : '';
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$outputParts[$k] .= $join['ON'][1]['field'];
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}
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}
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}
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}
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// Return imploded buffer:
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return implode(', ', $outputParts);
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}
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/**
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* Implodes an array of WHERE clause configuration into a WHERE clause.
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*
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* @param array WHERE clause configuration
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* @return string WHERE clause as string.
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* @see explodeWhereClause()
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*/
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protected function nativeCompileWhereClause($clauseArray) {
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// Prepare buffer variable:
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$output = '';
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// Traverse clause array:
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if (is_array($clauseArray)) {
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foreach ($clauseArray as $k => $v) {
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// Set operator:
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$output .= $v['operator'] ? ' ' . $v['operator'] : '';
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// Look for sublevel:
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if (is_array($v['sub'])) {
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$output .= ' (' . trim($this->nativeCompileWhereClause($v['sub'])) . ')';
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} elseif (isset($v['func'])) {
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$output .= ' ' . trim($v['modifier']) . ' ' . $v['func']['type'] . ' (' . $this->compileSELECT($v['func']['subquery']) . ')';
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} else {
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// Set field/table with modifying prefix if any:
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$output .= ' ' . trim($v['modifier'] . ' ' . ($v['table'] ? $v['table'] . '.' : '') . $v['field']);
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// Set calculation, if any:
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if ($v['calc']) {
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$output .= $v['calc'] . $v['calc_value'][1] . $this->compileAddslashes($v['calc_value'][0]) . $v['calc_value'][1];
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}
|
||
|
// Set comparator:
|
||
|
if ($v['comparator']) {
|
||
|
$output .= ' ' . $v['comparator'];
|
||
|
// Detecting value type; list or plain:
|
||
|
if (t3lib_div::inList('NOTIN,IN', strtoupper(str_replace(array(' ', "\t", "\r", "\n"), '', $v['comparator'])))) {
|
||
|
if (isset($v['subquery'])) {
|
||
|
$output .= ' (' . $this->compileSELECT($v['subquery']) . ')';
|
||
|
} else {
|
||
|
$valueBuffer = array();
|
||
|
foreach ($v['value'] as $realValue) {
|
||
|
$valueBuffer[] = $realValue[1] . $this->compileAddslashes($realValue[0]) . $realValue[1];
|
||
|
}
|
||
|
$output .= ' (' . trim(implode(',', $valueBuffer)) . ')';
|
||
|
}
|
||
|
} else if (isset($v['value']['operator'])) {
|
||
|
$values = array();
|
||
|
foreach ($v['value']['args'] as $fieldDef) {
|
||
|
$values[] = ($fieldDef['table'] ? $fieldDef['table'] . '.' : '') . $fieldDef['field'];
|
||
|
}
|
||
|
$output .= ' ' . $v['value']['operator'] . '(' . implode(',', $values) . ')';
|
||
|
} else {
|
||
|
$output .= ' ' . $v['value'][1] . $this->compileAddslashes($v['value'][0]) . $v['value'][1];
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
// Return output buffer:
|
||
|
return $output;
|
||
|
}
|
||
|
|
||
|
// END: Methods originally belonging to t3lib_sqlparser but copied and fixed here as they were not used in Core
|
||
|
|
||
|
/*************************
|
||
|
*
|
||
|
* Compiling queries
|
||
| ... | ... | |
|
*************************/
|
||
|
/**
|
||
|
* Compiles an SQL query from components
|
||
|
*
|
||
|
* @param array Array of SQL query components
|
||
|
* @return string SQL query
|
||
|
* @see parseSQL()
|
||
|
*/
|
||
|
public function compileSQL($components) {
|
||
|
switch($components['type']) {
|
||
|
case 'SELECT':
|
||
|
$query = $this->compileSELECT($components);
|
||
|
break;
|
||
|
case 'UPDATE':
|
||
|
$query = $this->compileUPDATE($components);
|
||
|
break;
|
||
|
case 'INSERT':
|
||
|
$query = $this->compileINSERT($components);
|
||
|
break;
|
||
|
case 'DELETE':
|
||
|
$query = $this->compileDELETE($components);
|
||
|
break;
|
||
|
case 'EXPLAIN':
|
||
|
$query = 'EXPLAIN ' . $this->compileSELECT($components);
|
||
|
break;
|
||
|
case 'DROPTABLE':
|
||
|
$query = $this->compileDROPTABLE($components);
|
||
|
break;
|
||
|
case 'CREATETABLE':
|
||
|
$query = $this->compileCREATETABLE($components);
|
||
|
break;
|
||
|
case 'ALTERTABLE':
|
||
|
$query = $this->compileALTERTABLE($components);
|
||
|
break;
|
||
|
}
|
||
|
return $query;
|
||
|
}
|
||
|
/**
|
||
|
* Compiles an INSERT statement from components array
|
||
|
*
|
||
|
* @param array Array of SQL query components
|
||
| ... | ... | |
|
* @return array array with SQL CREATE TABLE/INDEX command(s)
|
||
|
* @see parseCREATETABLE()
|
||
|
*/
|
||
|
protected function compileCREATETABLE($components) {
|
||
|
public function compileCREATETABLE($components) {
|
||
|
// Execute query (based on handler derived from the TABLE name which we actually know for once!)
|
||
|
switch ((string)$GLOBALS['TYPO3_DB']->handlerCfg[$GLOBALS['TYPO3_DB']->handler_getFromTableList($components['TABLE'])]['type']) {
|
||
|
case 'native':
|
||
| ... | ... | |
|
* @return string SQL ALTER TABLE query
|
||
|
* @see parseALTERTABLE()
|
||
|
*/
|
||
|
protected function compileALTERTABLE($components) {
|
||
|
public function compileALTERTABLE($components) {
|
||
|
// Execute query (based on handler derived from the TABLE name which we actually know for once!)
|
||
|
switch ((string)$GLOBALS['TYPO3_DB']->handlerCfg[$GLOBALS['TYPO3_DB']->lastHandlerKey]['type']) {
|
||
|
case 'native':
|
||
| ... | ... | |
|
public function compileWhereClause($clauseArray, $functionMapping = TRUE) {
|
||
|
switch ((string)$GLOBALS['TYPO3_DB']->handlerCfg[$GLOBALS['TYPO3_DB']->lastHandlerKey]['type']) {
|
||
|
case 'native':
|
||
|
$output = $this->nativeCompileWhereClause($clauseArray);
|
||
|
$output = parent::compileWhereClause($clauseArray);
|
||
|
break;
|
||
|
case 'adodb':
|
||
|
// Prepare buffer variable:
|
||