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2004-10-01 08:26:10  作者:  来源:互联网  浏览次数:26  文字大小:【】【】【
简介:    {         $this->doXmlString2Xml($string,$xpath);     }     /**     ...

{

$this->doXmlString2Xml($string,$xpath);

}

/**

* Adds an additional pear::db_result resultset to $this->xmldoc

*

* @param Object db_result result from a DB-query

* @see doSql2Xml()

* @access public

*/

function addResult($result)

{

$this->doSql2Xml($result);

}

/**

* Adds an aditional resultset generated from an sql-statement

* to $this->xmldoc

*

* @param string sql a string containing an sql-statement.

* @access public

* @see doSql2Xml()

*/

function addSql($sql)

{

/* if there are {} expressions in the sql query, we assume it's an xpath expression to

* be evaluated.

*/

if (preg_match_all ("/\{([^\}]+)\}/i",$sql,$matches))

{

foreach ($matches[1] as $match)

{

$sql = preg_replace("#\{".preg_quote($match)."\}# ", $this->getXpathValue($match),$sql);

}

}

$result = $this->db->query($sql);

//very strange

if (PEAR::isError($result->result)) {

print "You have an SQL-Error:
".$result->result->userinfo;

print "
";

new DB_Error($result->result->code,PEAR_ERROR_DIE);

}

$this->doSql2Xml($result);

}

/**

* Adds an aditional resultset generated from an Array

* to $this->xmldoc

* TODO: more explanation, how arrays are transferred

*

* @param array multidimensional array.

* @access public

* @see doArray2Xml()

*/

function addArray ($array)

{

$parent_row = $this->insertNewResult(&$metadata);

$this->DoArray2Xml($array,$parent_row);

}

/**

* Returns an xml-string with a xml-representation of the resultsets.

*

* The resultset can be directly provided here, or if you need more than one

* in your xml, then you have to provide each of them with add() before you

* call getXML, but the last one can also be provided here.

*

* @param mixed $result result Object from a DB-query

* @return string xml

* @access public

*/

function getXML($result = Null)

{

$xmldoc = $this->getXMLObject($result);

return $xmldoc->dumpmem();

}

/**

* Returns an xml DomDocument Object with a xml-representation of the resultsets.

*

* The resultset can be directly provided here, or if you need more than one

* in your xml, then you have to provide each of them with add() before you

* call getXMLObject, but the last one can also be provided here.

*

* @param mixed $result result Object from a DB-query

* @return Object DomDocument

* @access public

*/

function getXMLObject($result = Null)

{

if ($result) {

$this->add ($result);

}

return $this->xmldoc;

}

/**

* For adding db_result-"trees" to $this->xmldoc

* @param Object db_result

* @access private

* @see addResult(),addSql()

*/

function doSql2Xml($result)

{

if (DB::IsError($result)) {

print "Error in file ".__FILE__." at line ".__LINE__."
\n";

print $result->userinfo."
\n";

new DB_Error($result->code,PEAR_ERROR_DIE);

}

// the method_exists is here, cause tableInfo is only in the cvs at the moment

// BE CAREFUL: if you have fields with the same name in different tables, you will get errors

// later, since DB_FETCHMODE_ASSOC doesn't differentiate that stuff.

$this->LastResult = &$result;

if (!method_exists($result,"tableInfo") || ! ($tableInfo = $result->tableInfo(False)))

{

//emulate tableInfo. this can go away, if every db supports tableInfo

$fetchmode = DB_FETCHMODE_ASSOC;

$res = $result->FetchRow($fetchmode);

$this->nested = False;

$i = 0;

while (list($key, $val) = each($res))

{

$tableInfo[$i]["table"]= $this->tagNameResult;

$tableInfo[$i]["name"] = $key;

$resFirstRow[$i] = $val;

$i++;

}

$res = $resFirstRow;

$FirstFetchDone = True;

$fetchmode = DB_FETCHMODE_ORDERED;

}

else

{

$FirstFetchDone = False;

$fetchmode = DB_FETCHMODE_ORDERED;

}

// initialize db hierarchy...

$parenttable = "root";

$tableInfo["parent_key"]["root"] = 0;

foreach ($tableInfo as $key => $value)

{

if (is_int($key))

{

// if the sql-query had a function the table starts with a # (only in mysql i think....), then give the field the name of the table before...

if (preg_match ("/^#/",$value["table"]) || strlen($value["table"]) == 0) {

$value["table"] = $tableInfo[($key - 1)]["table"] ;

$tableInfo[$key]["table"] = $value["table"];

}

if (!isset($tableInfo["parent_table"]) || is_null($tableInfo["parent_table"][$value]["table"]]))

{

$tableInfo["parent_key"][$value]["table"]] = $key;

$tableInfo["parent_table"][$value]["table"]] = $parenttable;

$parenttable = $value["table"] ;

}

}

//if you need more tableInfo for later use you can write a function addTableInfo..

$this->addTableInfo($key, $value, &$tableInfo);

}

// end initialize

// if user made some own tableInfo data, merge them here.

if ($this->user_tableInfo)

{

$tableInfo = $this->array_merge_clobber($tableInfo,$this->user_tableInfo);

}

$parent['root'] = $this->insertNewResult(&$tableInfo);

//initialize $resold to get rid of warning messages;

$resold[0] = "ThisValueIsImpossibleForTheFirstFieldInTheFirstRow";

while ($FirstFetchDone == True || $res = $result->FetchRow($fetchmode))

{

//FirstFetchDone is only for emulating tableInfo, as long as not all dbs support tableInfo. can go away later

$FirstFetchDone = False;

while (list($key, $val) = each($res))

{

if ($resold[$tableInfo]["parent_key"][$tableInfo][$key]["table"]]] != $res[$tableInfo]["parent_key"][$tableInfo][$key]["table"]]] || !$this->nested)

{

if ($tableInfo["parent_key"][$tableInfo][$key]["table"]] == $key )

{

if ($this->nested || $key == 0)

{

$parent[$tableInfo][$key]["table"]] = $this->insertNewRow($parent[$tableInfo]["parent_table"][$tableInfo][$key]["table"]]], $res, $key, &$tableInfo);

}

else

{

$parent[$tableInfo][$key]["table"]]= $parent[$tableInfo]["parent_table"][$tableInfo][$key]["table"]]];

}

//set all children entries to somethin stupid

foreach($tableInfo["parent_table"] as $pkey => $pvalue)

{

if ($pvalue == $tableInfo[$key]["table"])

{

$resold[$tableInfo]["parent_key"][$pkey]]= "ThisIsJustAPlaceHolder";

}

}

}

if ( $parent[$tableInfo][$key]["table"]] != Null)

{

$this->insertNewElement($parent[$tableInfo][$key]["table"]], $res, $key, &$tableInfo, &$subrow);

}

}

}

$resold = $res;

unset ($subrow);

}

return $this->xmldoc;

}

/**

* For adding whole arrays to $this->xmldoc

*

* @param array

* @param Object domNode

* @access private

* @see addArray()

*/

function DoArray2Xml ($array, $parent) {

while (list($key, $val) = each($array))

{

$tableInfo[$key]["table"]= $this->tagNameResult;

$tableInfo[$key]["name"] = $key;

}

if ($this->user_tableInfo)

{

$tableInfo = $this->array_merge_clobber($tableInfo,$this->user_tableInfo);

}

foreach ($array as $key=>$value)

{

if (is_array($value) ) {

if (is_int($key) )

{

$valuenew = array_slice($value,0,1);

$keynew = array_keys($valuenew);

$keynew = $keynew[0];

}

else

{

$valuenew = $value;

$keynew = $key;

}

$rec2 = $this->insertNewRow($parent, $valuenew, $keynew, &$tableInfo);

$this->DoArray2xml($value,$rec2);

}

else {

$this->insertNewElement($parent, $array, $key, &$tableInfo,&$subrow);

}

}

}

/**

* This method sets the options for the class

* One can only set variables, which are defined at the top of

* of this class.

*

* @param array options to be passed to the class

* @param boolean if the old suboptions should be deleted

* @access public

* @see $nested,$user_options,$user_tableInfo

*/

function setOptions($options,$delete = False) {

//set options

if (is_array($options))

{

foreach ($options as $option => $value)

{

if (isset($this->{$option}))

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