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1
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<?php |
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2
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3
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abstract class sql_compiler { |
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4
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protected $skipDefaultOrderBy; |
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5
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protected $store; |
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6
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public $error; |
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7
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protected $join_target_properties; |
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8
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protected $offset; |
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9
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protected $limit; |
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10
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protected $cache; |
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11
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protected $path; |
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12
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protected $_SCAN_WS = array(" " => true, "\t" => true, "\n" => true ,"\r" => true); |
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13
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protected $_SCAN_AZ = array("a" => true, "A" => true, "b" => true, "B" => true, "c" => true, "C" => true, "d" => true, "D" => true, "e" => true, "E" => true, "f" => true, "F" => true, "g" => true, "G" => true, "h" => true, "H" => true, "i" => true, "I" => true, "j" => true, "J" => true, "k" => true, "K" => true, "l" => true, "L" => true, "m" => true, "M" => true, "n" => true, "N" => true, "o" => true, "O" => true, "p" => true, "P" => true, "q" => true, "Q" => true, "r" => true, "R" => true, "s" => true, "S" => true, "t" => true, "T" => true, "u" => true, "U" => true, "v" => true, "V" => true, "w" => true, "W" => true, "x" => true, "X" => true, "y" => true, "Y" => true, "z" => true, "Z" => true); |
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14
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protected $_SCAN_AZ_09 = array("a" => true, "A" => true, "b" => true, "B" => true, "c" => true, "C" => true, "d" => true, "D" => true, "e" => true, "E" => true, "f" => true, "F" => true, "g" => true, "G" => true, "h" => true, "H" => true, "i" => true, "I" => true, "j" => true, "J" => true, "k" => true, "K" => true, "l" => true, "L" => true, "m" => true, "M" => true, "n" => true, "N" => true, "o" => true, "O" => true, "p" => true, "P" => true, "q" => true, "Q" => true, "r" => true, "R" => true, "s" => true, "S" => true, "t" => true, "T" => true, "u" => true, "U" => true, "v" => true, "V" => true, "w" => true, "W" => true, "x" => true, "X" => true, "y" => true, "Y" => true, "z" => true, "Z" => true, "_" => true, "0" => true, "1" => true, "2" => true, "3" => true, "4" => true, "5" => true, "6" => true, "7" => true, "8" => true, "9" => true); |
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15
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protected $_SCAN_NUM = array("0" => true, "1" => true, "2" => true, "3" => true, "4" => true, "5" => true, "6" => true, "7" => true, "8" => true, "9" => true); |
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16
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protected $_SCAN_NUM_START = array("0" => true, "1" => true, "2" => true, "3" => true, "4" => true, "5" => true, "6" => true, "7" => true, "8" => true, "9" => true, "-" => true); |
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17
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protected $_SCAN_CMP = array("~" => array("=" => array("FIN" => true)), "=" => array("=" => array("FIN" => true), "FIN" => true, "~" => array("FIN" => true, "~" => array("FIN" => true)), "*" => array("FIN" => true, "*" => array("FIN" => true)), "/" => array("FIN" => true)), "!" => array("=" => array("FIN" => true), "~" => array("FIN" => true, "~" => array("FIN" => true)), "*" => array("FIN" => true, "*" => array("FIN" => true)), "/" => array("FIN" => true, "/" => array("FIN" => true))), "<" => array("=" => array("FIN" => true), "FIN" => true), ">" => array("=" => array("FIN" => true), "FIN" => true), "/" => array("=" => array("=" => array("FIN" => true)))); |
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18
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20
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42 |
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protected function parse_const(&$YYBUFFER) { |
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42 |
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$YYCURSOR = 0; |
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42 |
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while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
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23
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6 |
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$YYCURSOR++; |
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24
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6 |
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} |
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25
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42 |
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$value = ''; |
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26
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42 |
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$yych = $YYBUFFER[$YYCURSOR]; |
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27
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switch (true) { |
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42 |
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case '"' === $yych: |
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29
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42 |
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case "'" === $yych: |
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40 |
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$quote = $yych; |
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40 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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32
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40 |
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while ($yych !== "\0" && $yych !== $quote) { |
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33
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40 |
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if ($yych === "\\") { |
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34
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14 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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2 |
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if ($yych !== $quote && $yych != "\\") { |
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$value .= "\\"; |
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} |
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38
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14 |
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} |
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40 |
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$value .= $yych; |
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40
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40 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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40 |
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} |
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40 |
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$YYBUFFER = substr($YYBUFFER, $YYCURSOR + 1); |
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40 |
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$node["id"] = "string"; |
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44
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40 |
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$node["type"] = ($quote === '"') ? "double" : "single"; |
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40 |
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$node["value"] = stripslashes($value); |
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40 |
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return $node; |
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break; |
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48
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2 |
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case $this->_SCAN_NUM_START[$yych]: |
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2 |
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$value = $yych; |
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50
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2 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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51
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2 |
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while (isset($this->_SCAN_NUM[$yych])) { |
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52
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$value .= $yych; |
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1 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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54
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} |
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55
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2 |
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if ($yych === '.') { |
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$value .= $yych; |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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while (isset($this->_SCAN_NUM[$yych])) { |
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$value .= $yych; |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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} |
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$node["id"]="float"; |
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$node["value"]=(float)$value; |
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} else { |
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$node["id"]="int"; |
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$node["value"]=(int)$value;; |
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} |
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$YYBUFFER = substr($YYBUFFER, $YYCURSOR); |
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2 |
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return $node; |
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break; |
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} |
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} |
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74
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47 |
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protected function parse_ident(&$YYBUFFER) { |
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/* parse identifier regs 1,2 and 3 |
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76
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77
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reg[1]: tablename |
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78
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reg[2]: property name |
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79
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reg[3]: only used with 'my' properties |
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*/ |
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81
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47 |
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$reg_id='^[[:space:]]*(([a-z_][a-z0-9_]*)(:[a-z]+)?([.][a-z_][a-z0-9_]*)?([.][a-z_][a-z0-9_]*)?)'; |
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47 |
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$reg_id.='[[:space:]]*'; |
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84
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47 |
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$YYCURSOR = 0; |
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47 |
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while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
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2 |
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$YYCURSOR++; |
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87
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2 |
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} |
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47 |
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$value = ''; |
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89
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47 |
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$yych = $YYBUFFER[$YYCURSOR]; |
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90
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91
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47 |
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if ($this->_SCAN_AZ[$yych]) { |
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46 |
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$value .= $yych; |
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93
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46 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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94
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46 |
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while (isset($this->_SCAN_AZ_09[$yych])) { |
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95
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46 |
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$value .= $yych; |
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96
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46 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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97
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46 |
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} |
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98
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46 |
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$match_1 = $value; $value = ''; |
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46 |
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if ($yych === ':') { |
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100
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$yych = $YYBUFFER[++$YYCURSOR]; |
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101
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while (isset($this->_SCAN_AZ[$yych])) { |
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102
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$value .= $yych; |
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103
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$yych = $YYBUFFER[++$YYCURSOR]; |
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104
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} |
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105
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$record_id = $value; $value = ''; |
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} |
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View Code Duplication |
if ($yych === '.') { |
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108
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43 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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43 |
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if ($this->_SCAN_AZ[$yych]) { |
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110
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43 |
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$value .= $yych; |
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111
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43 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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112
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43 |
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while (isset($this->_SCAN_AZ_09[$yych])) { |
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113
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43 |
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$value .= $yych; |
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114
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43 |
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$yych = $YYBUFFER[++$YYCURSOR]; |
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115
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43 |
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} |
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116
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43 |
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} |
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117
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43 |
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$match_2 = $value; $value = ''; |
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118
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43 |
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} |
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119
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View Code Duplication |
if ($yych === '.') { |
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120
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$yych = $YYBUFFER[++$YYCURSOR]; |
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121
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if ($this->_SCAN_AZ[$yych]) { |
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122
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$value .= $yych; |
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123
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$yych = $YYBUFFER[++$YYCURSOR]; |
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124
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while (isset($this->_SCAN_AZ_09[$yych])) { |
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125
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$value .= $yych; |
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126
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$yych = $YYBUFFER[++$YYCURSOR]; |
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127
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} |
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128
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} |
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129
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$match_3 = $value; $value = ''; |
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130
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} |
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131
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132
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46 |
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} |
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133
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134
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135
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47 |
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if($match_1) { |
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136
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46 |
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if (!$match_2) { |
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137
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/* default table is 'object' */ |
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138
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39 |
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$match_2 = $match_1; |
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139
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39 |
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$match_1 = "object"; |
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140
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39 |
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} |
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141
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46 |
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$node["id"]="ident"; |
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142
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143
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46 |
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$table=$match_1; |
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144
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46 |
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$field=$match_2; |
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145
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46 |
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if ($table=="object") { |
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146
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switch ($field) { |
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147
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41 |
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case "implements": |
|
148
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$node["id"]="implements"; |
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149
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break; |
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150
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41 |
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case "path": |
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151
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41 |
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case "parent": |
|
152
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41 |
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case "priority": |
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153
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1 |
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$node["table"]="nodes"; |
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154
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1 |
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$node["field"]=$field; |
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155
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1 |
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break; |
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156
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41 |
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default: |
|
157
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41 |
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$node["table"]="objects"; |
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158
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41 |
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$node["field"]=$field; |
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159
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41 |
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} |
|
160
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41 |
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} else |
|
161
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41 |
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if ($table === "my") { |
|
162
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$node["id"] = "custom"; |
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163
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if ($match_3) { |
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164
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$node["nls"] = $field; |
|
165
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$field = $match_3; |
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166
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} |
|
167
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$node["field"] = $field; |
|
168
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$node["record_id"] = $record_id; |
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169
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} else { |
|
170
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41 |
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$node["id"]="property"; |
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171
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41 |
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if ($match_3) { |
|
172
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$node["nls"] = $field; |
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173
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$field = $match_3; |
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174
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} |
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175
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41 |
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$node["table"]="prop_".$table; |
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176
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41 |
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$node["field"]="AR_".$field; |
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177
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41 |
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$node["record_id"] = $record_id; |
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178
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} |
|
179
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46 |
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} |
|
180
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47 |
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$YYBUFFER = substr($YYBUFFER, $YYCURSOR); |
|
181
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47 |
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return $node; |
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182
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} |
|
183
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184
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45 |
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protected function parse_cmp_expr(&$YYBUFFER) { |
|
185
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45 |
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$result=$this->parse_ident($YYBUFFER); |
|
186
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45 |
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if ($result) { |
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187
|
44 |
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$YYCURSOR = 0; |
|
188
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44 |
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while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
189
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7 |
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$YYCURSOR++; |
|
190
|
7 |
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} |
|
191
|
44 |
|
$yych = $YYBUFFER[$YYCURSOR]; |
|
192
|
44 |
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$YYCURSOR_START = $YYCURSOR; |
|
193
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44 |
|
$RULES = &$this->_SCAN_CMP; |
|
194
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44 |
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while (isset($RULES[$yych])) { |
|
195
|
42 |
|
$RULES = &$RULES[$yych]; |
|
196
|
42 |
|
if (isset($RULES['FIN'])) { |
|
197
|
42 |
|
$YYMATCH = $YYCURSOR; |
|
198
|
42 |
|
} |
|
199
|
42 |
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
200
|
42 |
|
} |
|
201
|
44 |
|
if (isset($YYMATCH)) { |
|
202
|
42 |
|
$node["id"]="cmp"; |
|
|
|
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|
|
203
|
42 |
|
$node["operator"]=substr($YYBUFFER, $YYCURSOR_START, ($YYMATCH + 1) - $YYCURSOR_START); |
|
204
|
42 |
|
$node["left"]=$result; |
|
205
|
42 |
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR); |
|
206
|
42 |
|
$result=$this->parse_const($YYBUFFER); |
|
207
|
42 |
|
if ($result) { |
|
208
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42 |
|
$node["right"]=$result; |
|
209
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42 |
|
} |
|
210
|
42 |
|
$result=$node; |
|
211
|
42 |
|
} else { |
|
212
|
2 |
|
$this->error="unknow compare-operator near '$YYBUFFER'"; |
|
213
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|
|
} |
|
214
|
44 |
|
} |
|
215
|
45 |
|
return $result; |
|
216
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|
|
} |
|
217
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|
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|
|
218
|
45 |
|
protected function parse_group_expr(&$YYBUFFER) { |
|
219
|
45 |
|
$YYCURSOR = 0; |
|
220
|
45 |
|
while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
221
|
2 |
|
$YYCURSOR++; |
|
222
|
2 |
|
} |
|
223
|
45 |
|
$yych = $YYBUFFER[$YYCURSOR++]; |
|
224
|
45 |
|
if ($yych === '(') { |
|
225
|
|
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR); |
|
226
|
|
|
$result = $this->parse_or_expr($YYBUFFER); |
|
227
|
|
|
$YYCURSOR = 0; |
|
228
|
|
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while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
229
|
|
|
$YYCURSOR++; |
|
230
|
|
|
} |
|
231
|
|
|
$yych = $YYBUFFER[$YYCURSOR++]; |
|
232
|
|
|
if ($yych === ')') { |
|
233
|
|
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR); |
|
234
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|
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$node["id"]="group"; |
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|
235
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|
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$node["left"]=$result; |
|
236
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|
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$result=$node; |
|
237
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|
|
} else { |
|
238
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|
|
unset($result); |
|
239
|
|
|
$this->error = "missing closing group sign near '$YYBUFFER'"; |
|
240
|
|
|
} |
|
241
|
|
|
} else { |
|
242
|
45 |
|
$result = $this->parse_cmp_expr($YYBUFFER); |
|
243
|
|
|
} |
|
244
|
45 |
|
return $result; |
|
245
|
|
|
} |
|
246
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|
|
247
|
45 |
View Code Duplication |
protected function parse_and_expr(&$YYBUFFER) { |
|
248
|
45 |
|
$result=$this->parse_group_expr($YYBUFFER); |
|
249
|
45 |
|
while (is_array($result)) { |
|
250
|
44 |
|
$YYCURSOR = 0; |
|
251
|
44 |
|
while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
252
|
37 |
|
$YYCURSOR++; |
|
253
|
37 |
|
} |
|
254
|
44 |
|
$ident = strtolower(substr($YYBUFFER, $YYCURSOR, 3)); |
|
255
|
44 |
|
if ($ident === 'and' && !isset($this->_SCAN_AZ_09[$YYBUFFER[$YYCURSOR + 3]]) ) { |
|
256
|
|
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR + 3); |
|
257
|
|
|
$right = $this->parse_group_expr($YYBUFFER); |
|
258
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|
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if (is_array($right)) { |
|
259
|
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$result = array( |
|
260
|
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'id' => $ident, |
|
261
|
|
|
'left' => $result, |
|
262
|
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'right' => $right |
|
263
|
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); |
|
264
|
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} else { |
|
265
|
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|
unset($result); |
|
266
|
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|
} |
|
267
|
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} else { |
|
268
|
44 |
|
break; |
|
269
|
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|
} |
|
270
|
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} |
|
271
|
45 |
|
return $result; |
|
272
|
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} |
|
273
|
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274
|
45 |
View Code Duplication |
protected function parse_or_expr(&$YYBUFFER) { |
|
275
|
45 |
|
$result=$this->parse_and_expr($YYBUFFER); |
|
276
|
45 |
|
while (is_array($result)) { |
|
277
|
44 |
|
$YYCURSOR = 0; |
|
278
|
44 |
|
while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
279
|
37 |
|
$YYCURSOR++; |
|
280
|
37 |
|
} |
|
281
|
44 |
|
$ident = strtolower(substr($YYBUFFER, $YYCURSOR, 2)); |
|
282
|
44 |
|
if ($ident === 'or' && !isset($this->_SCAN_AZ_09[$YYBUFFER[$YYCURSOR + 2]]) ) { |
|
283
|
|
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR + 2); |
|
284
|
|
|
$right = $this->parse_and_expr($YYBUFFER); |
|
285
|
|
|
if (is_array($right)) { |
|
286
|
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|
$result = array( |
|
287
|
|
|
'id' => $ident, |
|
288
|
|
|
'left' => $result, |
|
289
|
|
|
'right' => $right |
|
290
|
|
|
); |
|
291
|
|
|
} else { |
|
292
|
|
|
unset($result); |
|
293
|
|
|
} |
|
294
|
|
|
} else { |
|
295
|
44 |
|
break; |
|
296
|
|
|
} |
|
297
|
|
|
} |
|
298
|
45 |
|
return $result; |
|
299
|
|
|
} |
|
300
|
|
|
|
|
301
|
42 |
|
protected function parse_orderby(&$YYBUFFER) { |
|
302
|
38 |
|
$field = $this->parse_ident($YYBUFFER); |
|
303
|
|
|
|
|
304
|
38 |
|
$YYCURSOR = 0; |
|
305
|
40 |
|
while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
306
|
1 |
|
$YYCURSOR++; |
|
307
|
1 |
|
} |
|
308
|
38 |
|
$value = ''; |
|
309
|
38 |
|
$yych = $YYBUFFER[$YYCURSOR]; |
|
310
|
38 |
View Code Duplication |
if ($this->_SCAN_AZ[$yych]) { |
|
311
|
1 |
|
$value .= $yych; |
|
312
|
1 |
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
313
|
1 |
|
while (isset($this->_SCAN_AZ[$yych])) { |
|
314
|
1 |
|
$value .= $yych; |
|
315
|
1 |
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
316
|
1 |
|
} |
|
317
|
1 |
|
$sort_type = strtoupper($value); |
|
318
|
1 |
|
if (!($sort_type == 'ASC' || $sort_type == 'DESC')) { // If sort type is anything else than ASC or DESC, it is not part of the order by. |
|
319
|
1 |
|
$sort_type = 'ASC'; |
|
320
|
1 |
|
$YYCURSOR = $YYCURSOR - strlen($value); |
|
321
|
15 |
|
$value = ''; |
|
|
|
|
|
|
322
|
1 |
|
} |
|
323
|
1 |
|
} else { |
|
324
|
37 |
|
$sort_type = 'ASC'; |
|
325
|
|
|
} |
|
326
|
38 |
|
while (is_array($field)) { |
|
327
|
|
|
$result = array( |
|
328
|
40 |
|
'id' => 'orderbyfield', |
|
329
|
38 |
|
'type' => $sort_type, |
|
330
|
38 |
|
'right' => $field, |
|
331
|
|
|
'left' => $result |
|
|
|
|
|
|
332
|
38 |
|
); |
|
333
|
38 |
|
while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
334
|
|
|
$YYCURSOR++; |
|
335
|
|
|
} |
|
336
|
38 |
|
$yych = $YYBUFFER[$YYCURSOR]; |
|
337
|
38 |
|
if ($yych !== ',') { |
|
338
|
38 |
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR); |
|
339
|
38 |
|
unset($field); |
|
340
|
38 |
|
} else { |
|
341
|
1 |
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR + 1); |
|
342
|
1 |
|
$field = $this->parse_ident($YYBUFFER); |
|
343
|
1 |
|
$YYCURSOR = 0; |
|
344
|
1 |
|
while (isset($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]])) { |
|
345
|
14 |
|
$YYCURSOR++; |
|
346
|
|
|
} |
|
347
|
1 |
|
$value = ''; |
|
348
|
1 |
|
$yych = $YYBUFFER[$YYCURSOR]; |
|
349
|
15 |
View Code Duplication |
if ($this->_SCAN_AZ[$yych]) { |
|
350
|
|
|
$value .= $yych; |
|
351
|
|
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
352
|
|
|
while (isset($this->_SCAN_AZ[$yych])) { |
|
353
|
|
|
$value .= $yych; |
|
354
|
|
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
355
|
|
|
} |
|
356
|
|
|
$sort_type = strtoupper($value); |
|
357
|
|
|
if (!($sort_type == 'ASC' || $sort_type == 'DESC')) { // If sort type is anything else than ASC or DESC, it is not part of the order by. |
|
358
|
|
|
$sort_type = 'ASC'; |
|
359
|
|
|
$YYCURSOR = $YYCURSOR - strlen($value); |
|
360
|
|
|
$value = ''; |
|
|
|
|
|
|
361
|
|
|
} |
|
362
|
|
|
} else { |
|
363
|
1 |
|
$sort_type = 'ASC'; |
|
364
|
|
|
} |
|
365
|
|
|
} |
|
366
|
38 |
|
} |
|
367
|
38 |
|
return $result; |
|
368
|
|
|
} |
|
369
|
|
|
|
|
370
|
|
|
|
|
371
|
|
|
protected function parse_join_target_properties(&$query) { |
|
372
|
|
|
do { |
|
373
|
|
|
if (!preg_match('/^([a-z_][a-z0-9_]*)(:[a-z]+)?/i', $query, $regs)) { |
|
374
|
|
|
$this->error = "expected property name at '$query'"; |
|
375
|
|
|
return false; |
|
376
|
|
|
} |
|
377
|
|
|
$this->join_target_properties["prop_".$regs[1]][$regs[2]] = true; |
|
378
|
|
|
$query = substr($query, strlen($regs[0])); |
|
379
|
|
|
|
|
380
|
|
|
if (!preg_match('/^[[:space:]]*,[[:space:]]*/', $query, $regs)) { |
|
381
|
|
|
return true; |
|
382
|
|
|
} |
|
383
|
|
|
$query = substr($query, strlen($regs[0])); |
|
384
|
|
|
} while(1); |
|
385
|
|
|
} |
|
386
|
|
|
|
|
387
|
47 |
|
protected function parse_query(&$query) { |
|
388
|
|
|
|
|
389
|
47 |
|
if (!preg_match('|^[[:space:]]*order[[:space:]]*by[[:space:]]+|i', $query, $regs)) { |
|
390
|
45 |
|
$result=$this->parse_or_expr($query); |
|
391
|
45 |
|
} else { |
|
392
|
2 |
|
$no_selection = true; |
|
393
|
|
|
} |
|
394
|
|
|
|
|
395
|
|
|
/* |
|
396
|
|
|
$YYCURSOR = 0; |
|
397
|
|
|
while ($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]]) { |
|
398
|
|
|
$YYCURSOR++; |
|
399
|
|
|
} |
|
400
|
|
|
|
|
401
|
|
|
$yych = $YYBUFFER[$YYCURSOR]; |
|
402
|
|
|
if ($this->_SCAN_AZ[$yych]) { |
|
403
|
|
|
$value = $yych; |
|
404
|
|
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
405
|
|
|
while ($this->_SCAN_AZ[$yych]) { |
|
406
|
|
|
$value .= $yych; |
|
407
|
|
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
408
|
|
|
} |
|
409
|
|
|
$value = strtolower($value); |
|
410
|
|
|
if ($value === 'order') { |
|
411
|
|
|
while ($this->_SCAN_WS[$YYBUFFER[$YYCURSOR]]) { |
|
412
|
|
|
$YYCURSOR++; |
|
413
|
|
|
} |
|
414
|
|
|
$yych = $YYBUFFER[$YYCURSOR]; |
|
415
|
|
|
if ($this->_SCAN_AZ[$yych]) { |
|
416
|
|
|
$value = $yych; |
|
417
|
|
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
418
|
|
|
while ($this->_SCAN_AZ[$yych]) { |
|
419
|
|
|
$value .= $yych; |
|
420
|
|
|
$yych = $YYBUFFER[++$YYCURSOR]; |
|
421
|
|
|
} |
|
422
|
|
|
$value = strtolower($value); |
|
423
|
|
|
if ($value === 'by') { |
|
424
|
|
|
$YYBUFFER = substr($YYBUFFER, $YYCURSOR; |
|
425
|
|
|
$result = $this->parse_or_expr($YYBUFFER); |
|
426
|
|
|
$YYCURSOR = 0; |
|
427
|
|
|
$value = ''; |
|
428
|
|
|
} else { |
|
429
|
|
|
$this->error = "syntax error near: $YYBUFFER"; |
|
430
|
|
|
return false; |
|
431
|
|
|
} |
|
432
|
|
|
} |
|
433
|
|
|
} |
|
434
|
|
|
} |
|
435
|
|
|
|
|
436
|
|
|
*/ |
|
437
|
|
|
|
|
438
|
47 |
|
if (preg_match('|^[[:space:]]*join[[:space:]]*target[[:space:]]*on[[:space:]]*|i', $query, $regs)) { |
|
439
|
|
|
$this->join_target_properties = array(); |
|
440
|
|
|
$query = substr($query, strlen($regs[0])); |
|
441
|
|
|
$this->parse_join_target_properties($query); |
|
442
|
|
|
} |
|
443
|
|
|
|
|
444
|
47 |
|
$matching = preg_match('|^[[:space:]]*order[[:space:]]*by[[:space:]]+|i', $query, $regs); |
|
445
|
47 |
|
if ( $matching || $no_selection ) { |
|
|
|
|
|
|
446
|
38 |
|
$query=substr($query, strlen($regs[0])); |
|
447
|
38 |
|
$node["id"]="orderby"; |
|
|
|
|
|
|
448
|
38 |
|
$node["right"]=$this->parse_orderby($query); |
|
449
|
38 |
|
$node["left"]=$result; |
|
|
|
|
|
|
450
|
38 |
|
$result=$node; |
|
451
|
38 |
|
} |
|
452
|
47 |
|
if (preg_match('|^[[:space:]]*limit[[:space:]]+([0-9]+)[[:space:]]*([,][[:space:]]*([0-9]+))?|i', $query, $regs)) { |
|
453
|
1 |
|
$query=substr($query, strlen($regs[0])); |
|
454
|
1 |
|
$limit_s["id"]="limit"; |
|
|
|
|
|
|
455
|
1 |
|
$limit_s["offset"]=$regs[1]; |
|
456
|
1 |
|
$limit_s["limit"]=$regs[3]; |
|
457
|
1 |
|
} else { |
|
458
|
46 |
|
$limit_s["id"]="limit"; |
|
|
|
|
|
|
459
|
46 |
|
$limit_s["offset"]=($this->offset) ? $this->offset : 0; |
|
460
|
46 |
|
$limit_s["limit"]=($this->limit) ? $this->limit : 0; |
|
461
|
|
|
} |
|
462
|
47 |
|
$limit_s["left"]=$result; |
|
463
|
47 |
|
$result=$limit_s; |
|
464
|
|
|
|
|
465
|
47 |
|
return $result; |
|
466
|
|
|
} |
|
467
|
|
|
|
|
468
|
|
|
// virtual (&private) method. To be implemented in the sql specific compiler |
|
469
|
|
|
protected abstract function priv_sql_compile($node) ; |
|
|
|
|
|
|
470
|
|
|
|
|
471
|
47 |
|
public function compile($path, $query, $limit=100, $offset=0, $layers = array()) { |
|
472
|
47 |
|
debug("sql_compiler::compile ($path, $query, $limit, $offset)", "store"); |
|
473
|
47 |
|
$this->error=""; |
|
474
|
47 |
|
$this->path = $path; |
|
475
|
|
|
|
|
476
|
47 |
|
$this->limit=$limit; |
|
477
|
47 |
|
$this->offset=$offset; |
|
478
|
47 |
|
$this->layers=$layers; |
|
|
|
|
|
|
479
|
|
|
|
|
480
|
47 |
|
$tree=$this->parse_query($query); |
|
481
|
|
|
|
|
482
|
47 |
|
if ( $this->error ) { |
|
483
|
2 |
|
return null; |
|
484
|
45 |
|
} else if ( trim($query) ) { |
|
485
|
|
|
// no error detected, but there is still a part of the query left |
|
486
|
|
|
$this->error="unkown operator near '$query'"; |
|
487
|
|
|
return null; |
|
488
|
45 |
|
} else if ( $tree ) { |
|
|
|
|
|
|
489
|
45 |
|
$compiled_query=$this->priv_sql_compile($tree); |
|
490
|
45 |
|
return $compiled_query; |
|
491
|
|
|
} else { |
|
492
|
|
|
return null; |
|
493
|
|
|
} |
|
494
|
|
|
|
|
495
|
|
|
} |
|
496
|
|
|
|
|
497
|
|
|
|
|
498
|
|
|
} |
|
499
|
|
|
|
Ariadne-CMS /
ariadne
Loading history...
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.