| [12] | 1 | <?php
|
|---|
| 2 | // ----------------------------------------------------------------------------------
|
|---|
| 3 | // Class: SparqlResultParser
|
|---|
| 4 | // ----------------------------------------------------------------------------------
|
|---|
| 5 |
|
|---|
| 6 | /**
|
|---|
| 7 | * Parses an xml document in SPARQL Result XML Format.
|
|---|
| 8 | *
|
|---|
| 9 | * @version $Id: SparqlResultParser.php 442 2007-06-01 16:19:26Z cax $
|
|---|
| 10 | * @author Tobias Gauß <tobias.gauss@web.de>
|
|---|
| 11 | *
|
|---|
| 12 | * @package sparql
|
|---|
| 13 | */
|
|---|
| 14 |
|
|---|
| 15 | class SparqlResultParser extends Object {
|
|---|
| 16 |
|
|---|
| 17 |
|
|---|
| 18 | var $arrOutput = array();
|
|---|
| 19 | var $resParser;
|
|---|
| 20 | var $strXmlData;
|
|---|
| 21 | var $counter = -1;
|
|---|
| 22 | var $mode = -1;
|
|---|
| 23 | var $varname;
|
|---|
| 24 | var $dtype;
|
|---|
| 25 | var $lang;
|
|---|
| 26 | var $varlist;
|
|---|
| 27 | var $bncounter = 0;
|
|---|
| 28 | var $current_literal;
|
|---|
| 29 |
|
|---|
| 30 |
|
|---|
| 31 | /**
|
|---|
| 32 | * Main function of SparqlResultParser
|
|---|
| 33 | *
|
|---|
| 34 | * @param String $strInputXML input document.
|
|---|
| 35 | */
|
|---|
| 36 | function parse($strInputXML) {
|
|---|
| 37 |
|
|---|
| 38 | $this->resParser = xml_parser_create ();
|
|---|
| 39 |
|
|---|
| 40 | xml_set_object($this->resParser,$this);
|
|---|
| 41 | xml_set_element_handler($this->resParser, "tagOpen", "tagClosed");
|
|---|
| 42 |
|
|---|
| 43 | xml_set_character_data_handler($this->resParser, "tagData");
|
|---|
| 44 |
|
|---|
| 45 | $this->strXmlData = xml_parse($this->resParser,$strInputXML );
|
|---|
| 46 | if(!$this->strXmlData) {
|
|---|
| 47 | echo "unable to parse result<br>".
|
|---|
| 48 | "server returned: <br>"
|
|---|
| 49 | .$strInputXML;
|
|---|
| 50 |
|
|---|
| 51 | return "false";
|
|---|
| 52 |
|
|---|
| 53 | }
|
|---|
| 54 |
|
|---|
| 55 | xml_parser_free($this->resParser);
|
|---|
| 56 |
|
|---|
| 57 | return $this->arrOutput;
|
|---|
| 58 | }
|
|---|
| 59 |
|
|---|
| 60 | // private parser functions from here //
|
|---|
| 61 | function tagOpen($parser, $name, $attrs) {
|
|---|
| 62 | // $tag=array("name"=>$name,"attrs"=>$attrs);
|
|---|
| 63 | // array_push($this->arrOutput,$tag);
|
|---|
| 64 | if(strtolower($name)=="variable"){
|
|---|
| 65 | if(isset($attrs['name']))
|
|---|
| 66 | $this->varlist[]=$attrs['name'];
|
|---|
| 67 | if(isset($attrs['NAME']))
|
|---|
| 68 | $this->varlist[]=$attrs['NAME'];
|
|---|
| 69 | }
|
|---|
| 70 |
|
|---|
| 71 | if(strtolower($name)=="result"){
|
|---|
| 72 | $this->counter++;
|
|---|
| 73 | if($this->counter > -1){
|
|---|
| 74 | foreach($this->varlist as $value){
|
|---|
| 75 | if(!isset($this->arrOutput[$this->counter][$value]))
|
|---|
| 76 | $this->arrOutput[$this->counter]["?".$value]='';
|
|---|
| 77 | }
|
|---|
| 78 | }
|
|---|
| 79 |
|
|---|
| 80 | }
|
|---|
| 81 | if(strtolower($name)=="boolean"){
|
|---|
| 82 | $this->counter++;
|
|---|
| 83 | $this->mode = 3;
|
|---|
| 84 | }
|
|---|
| 85 | if(strtolower($name)=="binding"){
|
|---|
| 86 | $this->varname = null;
|
|---|
| 87 | $this->dtype = null;
|
|---|
| 88 | $this->lang = null;
|
|---|
| 89 |
|
|---|
| 90 | if(isset($attrs['name'])){
|
|---|
| 91 | $this->varname = "?".$attrs['name'];
|
|---|
| 92 | }else{
|
|---|
| 93 | $this->varname = "?".$attrs['NAME'];
|
|---|
| 94 | }
|
|---|
| 95 | }
|
|---|
| 96 | if(strtolower($name)=="uri"){
|
|---|
| 97 | $this->mode = 0;
|
|---|
| 98 | }
|
|---|
| 99 | if(strtolower($name)=="literal"){
|
|---|
| 100 | $this->mode = 1;
|
|---|
| 101 | $this->current_literal = "";
|
|---|
| 102 | if(isset($attrs['datatype'])){
|
|---|
| 103 | $this->dtype = $attrs['datatype'];
|
|---|
| 104 | }else if(isset($attrs['DATATYPE'])){
|
|---|
| 105 | $this->dtype = $attrs['DATATYPE'];
|
|---|
| 106 | }
|
|---|
| 107 | if(isset($attrs['xml:lang'])){
|
|---|
| 108 | $this->lang = $attrs['datatype'];
|
|---|
| 109 | }else if(isset($attrs['XML:lang'])){
|
|---|
| 110 | $this->lang = $attrs['XML:lang'];
|
|---|
| 111 | }else if(isset($attrs['XML:LANG'])){
|
|---|
| 112 | $this->lang = $attrs['XML:LANG'];
|
|---|
| 113 | }else if(isset($attrs['xml:LANG'])){
|
|---|
| 114 | $this->lang = $attrs['xml:LANG'];
|
|---|
| 115 | }
|
|---|
| 116 | }
|
|---|
| 117 | if(strtolower($name)=="bnode"){
|
|---|
| 118 | $this->mode = 2;
|
|---|
| 119 | }
|
|---|
| 120 | }
|
|---|
| 121 |
|
|---|
| 122 | function tagData($parser, $tagData) {
|
|---|
| 123 | switch($this->mode){
|
|---|
| 124 | case 0 :
|
|---|
| 125 | $this->arrOutput[$this->counter][$this->varname] = new Resource($tagData);
|
|---|
| 126 | $this->mode = -1;
|
|---|
| 127 | break;
|
|---|
| 128 | case 1:
|
|---|
| 129 | $this->current_literal .= $tagData;
|
|---|
| 130 | break;
|
|---|
| 131 | case 2:
|
|---|
| 132 | if($tagData=="/"){
|
|---|
| 133 | $bn = "bNode".$this->bncounter;
|
|---|
| 134 | $this->bncounter++;
|
|---|
| 135 | }else{
|
|---|
| 136 | $bn = $tagData;
|
|---|
| 137 | }
|
|---|
| 138 | $this->arrOutput[$this->counter][$this->varname] = new BlankNode($bn);
|
|---|
| 139 | $this->mode = -1;
|
|---|
| 140 | break;
|
|---|
| 141 | case 3:
|
|---|
| 142 | $this->arrOutput = $tagData;
|
|---|
| 143 | $this->mode = -1;
|
|---|
| 144 | break;
|
|---|
| 145 |
|
|---|
| 146 | }
|
|---|
| 147 |
|
|---|
| 148 | }
|
|---|
| 149 |
|
|---|
| 150 | function tagClosed($parser, $name) {
|
|---|
| 151 | if ($this->mode == 1) {
|
|---|
| 152 | $lit = new Literal($this->current_literal);
|
|---|
| 153 | if($this->lang)
|
|---|
| 154 | $lit->setLanguage($this->lang);
|
|---|
| 155 | if($this->dtype)
|
|---|
| 156 | $lit->setDatatype($this->dtype);
|
|---|
| 157 | $this->arrOutput[$this->counter][$this->varname] = $lit ;
|
|---|
| 158 | $this->mode = -1;
|
|---|
| 159 | }
|
|---|
| 160 | }
|
|---|
| 161 | }
|
|---|
| 162 |
|
|---|
| 163 |
|
|---|
| 164 | ?> |
|---|
