Congegni/sintonia
7
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Fixed some formatting to comply with style guidelines.

Browse source
This commit is contained in:
paul 2006-10-25 20:35:59 +00:00
parent 6f2013845c
commit 27af739fe8
1 changed files with 247 additions and 154 deletions
Download patch file Download diff file Expand all files Collapse all files

253
campcaster/src/modules/storageServer/var/DataEngine.php
View file

@ -47,8 +47,7 @@ class DataEngine{
/** /**
* Constructor * Constructor
* *
* @param gb reference to BasicStor object * @param BasicStor $gb
* @return this
*/ */
function DataEngine(&$gb) function DataEngine(&$gb)
{ {
@ -64,12 +63,15 @@ class DataEngine{
); );
} }
/** /**
* Method returning array with where-parts of sql queries * Method returning array with where-parts of sql queries
* *
* @param conditions array - see conditions field in search criteria format * @param array $conditions
* See 'conditions' field in search criteria format
* definition in DataEngine class documentation * definition in DataEngine class documentation
* @return array of strings - where-parts of SQL qyeries * @return array
* array of strings - WHERE-parts of SQL queries
*/ */
function _makeWhereArr($conditions) function _makeWhereArr($conditions)
{ {
@ -90,7 +92,9 @@ class DataEngine{
// retype for timestamp value // retype for timestamp value
if ($cat == 'mtime') { if ($cat == 'mtime') {
switch ($op) { switch ($op) {
case'partial': case'prefix': break; case 'partial':
case 'prefix':
break;
default: default:
$retype = "::timestamp with time zone"; $retype = "::timestamp with time zone";
$opVal = "$retype $opVal$retype"; $opVal = "$retype $opVal$retype";
@ -113,17 +117,25 @@ class DataEngine{
return $whereArr; return $whereArr;
} }
/** /**
* Method returning SQL query for search/browse with AND operator * Method returning SQL query for search/browse with AND operator
* (without using INTERSECT command) * (without using INTERSECT command)
* *
* @param fldsPart string - fields part of sql query * @param string $fldsPart
* @param whereArr array - array of where-parts * fields part of SQL query
* @param fileCond string - condition for files table * @param array $whereArr
* @param browse boolean - true if browse vals required instead of gunids * array of WHERE-parts
* @param brFldNs string - namespace prefix of category for browse * @param string $fileCond
* @param brFld string - category for browse * Condition for files table
* @return query string * @param boolean $browse
* TRUE if browse vals required instead of gunids
* @param string $brFldNs
* Namespace prefix of category for browse
* @param string $brFld
* Category for browse
* @return string
* query
*/ */
function _makeAndSqlWoIntersect($fldsPart, $whereArr, $fileCond, $browse, function _makeAndSqlWoIntersect($fldsPart, $whereArr, $fileCond, $browse,
$brFldNs=NULL, $brFld=NULL) $brFldNs=NULL, $brFld=NULL)
@ -132,8 +144,7 @@ class DataEngine{
foreach ($whereArr as $i => $v) { foreach ($whereArr as $i => $v) {
$whereArr[$i] = sprintf($v, "md$i", "md$i", "md$i", "md$i", "md$i"); $whereArr[$i] = sprintf($v, "md$i", "md$i", "md$i", "md$i", "md$i");
$lastTbl = ($i==0 ? "f" : "md".($i-1)); $lastTbl = ($i==0 ? "f" : "md".($i-1));
$innerBlocks[] = $innerBlocks[] = "INNER JOIN {$this->mdataTable} md$i ON md$i.gunid = $lastTbl.gunid\n";
"INNER JOIN {$this->mdataTable} md$i ON md$i.gunid = $lastTbl.gunid\n";
} }
// query construcion: // query construcion:
$sql = "SELECT $fldsPart\nFROM {$this->filesTable} f\n".join("", $innerBlocks); $sql = "SELECT $fldsPart\nFROM {$this->filesTable} f\n".join("", $innerBlocks);
@ -141,32 +152,49 @@ class DataEngine{
$sql .= "INNER JOIN {$this->mdataTable} br". $sql .= "INNER JOIN {$this->mdataTable} br".
"\n ON br.gunid = f.gunid AND br.objns='_L'". "\n ON br.gunid = f.gunid AND br.objns='_L'".
" AND br.predicate='{$brFld}' AND br.predxml='T'"; " AND br.predicate='{$brFld}' AND br.predxml='T'";
if(!is_null($brFldNs)) $sql .= " AND br.predns='{$brFldNs}'"; if (!is_null($brFldNs)) {
$sql .= " AND br.predns='{$brFldNs}'";
}
$sql .= "\n"; $sql .= "\n";
} }
if(!is_null($fileCond)) $whereArr[] = " $fileCond"; if (!is_null($fileCond)) {
if(count($whereArr)>0) $sql .= "WHERE\n".join(" AND\n", $whereArr); $whereArr[] = " $fileCond";
if($browse) $sql .= "\nORDER BY br.object"; }
if (count($whereArr) > 0) {
$sql .= "WHERE\n".join(" AND\n", $whereArr);
}
if ($browse) {
$sql .= "\nORDER BY br.object";
}
return $sql; return $sql;
} }
/** /**
* Method returning SQL query for search/browse with AND operator * Method returning SQL query for search/browse with AND operator
* (using INTERSECT command) * (using INTERSECT command)
* *
* @param fldsPart string - fields part of sql query * @param string $fldsPart
* @param whereArr array - array of where-parts * Fields part of sql query
* @param fileCond string - condition for files table * @param array $whereArr
* @param browse boolean - true if browse vals required instead of gunids * Array of where-parts
* @param brFldNs string - namespace prefix of category for browse * @param string $fileCond
* @param brFld string - category for browse * Condition for files table
* @return query string * @param boolean $browse
* true if browse vals required instead of gunids
* @param string $brFldNs
* namespace prefix of category for browse
* @param string $brFld
* category for browse
* @return string
* query
*/ */
function _makeAndSql($fldsPart, $whereArr, $fileCond, $browse, function _makeAndSql($fldsPart, $whereArr, $fileCond, $browse,
$brFldNs=NULL, $brFld=NULL) $brFldNs=NULL, $brFld=NULL)
{ {
if(!USE_INTERSECT) return $this->_makeAndSqlWoIntersect( if (!USE_INTERSECT) {
$fldsPart, $whereArr, $fileCond, $browse, $brFldNs, $brFld); return $this->_makeAndSqlWoIntersect($fldsPart, $whereArr, $fileCond, $browse, $brFldNs, $brFld);
}
$isectBlocks = array(); $isectBlocks = array();
foreach ($whereArr as $i => $v) { foreach ($whereArr as $i => $v) {
$whereArr[$i] = sprintf($v, "md$i", "md$i", "md$i", "md$i", "md$i"); $whereArr[$i] = sprintf($v, "md$i", "md$i", "md$i", "md$i", "md$i");
@ -182,29 +210,43 @@ class DataEngine{
} else { } else {
$isectBlock = "FROM {$this->filesTable} f"; $isectBlock = "FROM {$this->filesTable} f";
} }
$sql = $sql = "SELECT $fldsPart\n".$isectBlock;
"SELECT $fldsPart\n".$isectBlock;
if ($browse) { if ($browse) {
$sql .= "\nINNER JOIN {$this->mdataTable} br ON br.gunid = f.gunid\n". $sql .= "\nINNER JOIN {$this->mdataTable} br ON br.gunid = f.gunid\n".
"WHERE br.objns='_L' AND br.predxml='T' AND br.predicate='{$brFld}'"; "WHERE br.objns='_L' AND br.predxml='T' AND br.predicate='{$brFld}'";
if(!is_null($brFldNs)) $sql .= " AND br.predns='{$brFldNs}'"; if (!is_null($brFldNs)) {
$sql .= " AND br.predns='{$brFldNs}'";
}
$glue = " AND"; $glue = " AND";
}else{ $glue = "WHERE";} } else {
if(!is_null($fileCond)) $sql .= "\n$glue $fileCond"; $glue = "WHERE";
if($browse) $sql .= "\nORDER BY br.object"; }
if (!is_null($fileCond)) {
$sql .= "\n$glue $fileCond";
}
if ($browse) {
$sql .= "\nORDER BY br.object";
}
return $sql; return $sql;
} }
/** /**
* Method returning SQL query for search/browse with OR operator * Method returning SQL query for search/browse with OR operator
* *
* @param fldsPart string - fields part of sql query * @param string $fldsPart
* @param whereArr array - array of where-parts * Fields part of sql query
* @param fileCond string - condition for files table * @param array $whereArr
* @param browse boolean - true if browse vals required instead of gunids * Array of where-parts
* @param brFldNs string - namespace prefix of category for browse * @param string $fileCond
* @param brFld string - category for browse * Condition for files table
* @return query string * @param boolean $browse
* True if browse vals required instead of gunids
* @param string $brFldNs
* Namespace prefix of category for browse
* @param string $brFld
* Category for browse
* @return string
* query
*/ */
function _makeOrSql($fldsPart, $whereArr, $fileCond, $browse, function _makeOrSql($fldsPart, $whereArr, $fileCond, $browse,
$brFldNs=NULL, $brFld=NULL) $brFldNs=NULL, $brFld=NULL)
@ -219,26 +261,39 @@ class DataEngine{
$sql .= "INNER JOIN {$this->mdataTable} br". $sql .= "INNER JOIN {$this->mdataTable} br".
"\n ON br.gunid = f.gunid AND br.objns='_L'". "\n ON br.gunid = f.gunid AND br.objns='_L'".
" AND br.predxml='T' AND br.predicate='{$brFld}'"; " AND br.predxml='T' AND br.predicate='{$brFld}'";
if(!is_null($brFldNs)) $sql .= " AND br.predns='{$brFldNs}'"; if (!is_null($brFldNs)) {
$sql .= " AND br.predns='{$brFldNs}'";
}
$sql .= "\n"; $sql .= "\n";
} }
if (count($whereArr) > 0) { if (count($whereArr) > 0) {
$sql .= "INNER JOIN {$this->mdataTable} md ON md.gunid=f.gunid\n"; $sql .= "INNER JOIN {$this->mdataTable} md ON md.gunid=f.gunid\n";
$sql .= "WHERE\n(\n".join(" OR\n", $whereArr).")"; $sql .= "WHERE\n(\n".join(" OR\n", $whereArr).")";
$glue = " AND"; $glue = " AND";
}else{ $glue = "WHERE"; } } else {
if(!is_null($fileCond)) $sql .= "$glue $fileCond"; $glue = "WHERE";
if($browse) $sql .= "\nORDER BY br.object"; }
if (!is_null($fileCond)) {
$sql .= "$glue $fileCond";
}
if ($browse) {
$sql .= "\nORDER BY br.object";
}
return $sql; return $sql;
} }
/** /**
* Search in local metadata database. * Search in local metadata database.
* *
* @param cri hash, search criteria see DataEngine class documentation * @param array $cri
* @param limit int, limit for result arrays (0 means unlimited) * Search criteria see DataEngine class documentation
* @param offset int, starting point (0 means without offset) * @param int $limit
* @return hash, fields: * Limit for result arrays (0 means unlimited)
* @param int $offset
* Starting point (0 means without offset)
* @return array
* hash, fields:
* results : array with gunid strings * results : array with gunid strings
* cnt : integer - number of matching gunids * cnt : integer - number of matching gunids
* of files have been found * of files have been found
@ -250,15 +305,22 @@ class DataEngine{
return $res; return $res;
} }
/** /**
* Search in local metadata database, more general version. * Search in local metadata database, more general version.
* *
* @param criteria hash, search criteria see DataEngine class documentation * @param hash $criteria
* @param limit int, limit for result arrays (0 means unlimited) * Search criteria see DataEngine class documentation
* @param offset int, starting point (0 means without offset) * @param int $limit
* @param brFldNs string - namespace prefix of category for browse * Limit for result arrays (0 means unlimited)
* @param brFld string, metadata category identifier for browse * @param int $offset
* @return arrays of hashes, fields: * Starting point (0 means without offset)
* @param string $brFldNs
* Namespace prefix of category for browse
* @param string $brFld
* Metadata category identifier for browse
* @return array
* arrays of hashes, fields:
* cnt : integer - number of matching gunids * cnt : integer - number of matching gunids
* of files have been found * of files have been found
* results : array of hashes: * results : array of hashes:
@ -305,13 +367,13 @@ class DataEngine{
$limitPart = ($limit != 0 ? " LIMIT $limit" : '' ). $limitPart = ($limit != 0 ? " LIMIT $limit" : '' ).
($offset != 0 ? " OFFSET $offset" : '' ); ($offset != 0 ? " OFFSET $offset" : '' );
$fileCond = "f.state='ready'"; $fileCond = "f.state='ready'";
if(!is_null($filetype)) $fileCond .= " AND f.ftype='$filetype'"; if (!is_null($filetype)) {
$fileCond .= " AND f.ftype='$filetype'";
}
if ($operator == 'and') { // operator: and if ($operator == 'and') { // operator: and
$sql = $this->_makeAndSql( $sql = $this->_makeAndSql($fldsPart, $whereArr, $fileCond, $browse, $brFldNs, $brFld);
$fldsPart, $whereArr, $fileCond, $browse, $brFldNs, $brFld);
} else { // operator: or } else { // operator: or
$sql = $this->_makeOrSql( $sql = $this->_makeOrSql($fldsPart, $whereArr, $fileCond, $browse, $brFldNs, $brFld);
$fldsPart, $whereArr, $fileCond, $browse, $brFldNs, $brFld);
} }
if (!$browse && $orderby) { if (!$browse && $orderby) {
$retype = ($orderby == 'mtime' ? '::timestamp with time zone' : '' ); $retype = ($orderby == 'mtime' ? '::timestamp with time zone' : '' );
@ -326,10 +388,16 @@ class DataEngine{
} }
// echo "\n---\n$sql\n---\n"; // echo "\n---\n$sql\n---\n";
$cnt = $this->_getNumRows($sql); $cnt = $this->_getNumRows($sql);
if(PEAR::isError($cnt)) return $cnt; if (PEAR::isError($cnt)) {
return $cnt;
}
$res = $this->dbc->getAll($sql.$limitPart); $res = $this->dbc->getAll($sql.$limitPart);
if(PEAR::isError($res)) return $res; if (PEAR::isError($res)) {
if(!is_array($res)) $res = array(); return $res;
}
if (!is_array($res)) {
$res = array();
}
# if (!$browse) { # if (!$browse) {
# $res = array_map(array("StoredFile", "_normalizeGunid"), $res); # $res = array_map(array("StoredFile", "_normalizeGunid"), $res);
# } # }
@ -338,16 +406,24 @@ class DataEngine{
if (!$browse) { if (!$browse) {
$gunid = StoredFile::_normalizeGunid($it['gunid']); $gunid = StoredFile::_normalizeGunid($it['gunid']);
$titleA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dc:title'); $titleA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dc:title');
if(PEAR::isError($r)) return $r; if (PEAR::isError($r)) {
return $r;
}
$title = (isset($titleA[0]['value']) ? $titleA[0]['value'] : ''); $title = (isset($titleA[0]['value']) ? $titleA[0]['value'] : '');
$creatorA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dc:creator'); $creatorA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dc:creator');
if(PEAR::isError($r)) return $r; if (PEAR::isError($r)) {
return $r;
}
$creator = (isset($creatorA[0]['value']) ? $creatorA[0]['value'] : ''); $creator = (isset($creatorA[0]['value']) ? $creatorA[0]['value'] : '');
$sourceA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dc:source'); $sourceA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dc:source');
if(PEAR::isError($r)) return $r; if (PEAR::isError($r)) {
return $r;
}
$source = (isset($sourceA[0]['value']) ? $sourceA[0]['value'] : ''); $source = (isset($sourceA[0]['value']) ? $sourceA[0]['value'] : '');
$lengthA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dcterms:extent'); $lengthA = $r = $this->gb->bsGetMetadataValue($it['id'], 'dcterms:extent');
if(PEAR::isError($r)) return $r; if (PEAR::isError($r)) {
return $r;
}
$length = (isset($lengthA[0]['value']) ? $lengthA[0]['value'] : ''); $length = (isset($lengthA[0]['value']) ? $lengthA[0]['value'] : '');
$eres[] = array( $eres[] = array(
'gunid' => $gunid, 'gunid' => $gunid,
@ -364,15 +440,19 @@ class DataEngine{
return array('results'=>$eres, 'cnt'=>$cnt); return array('results'=>$eres, 'cnt'=>$cnt);
} }
/** /**
* Return values of specified metadata category * Return values of specified metadata category
* *
* @param category string, metadata category name * @param string $category
* with or without namespace prefix (dc:title, author) * metadata category name, with or without namespace prefix (dc:title, author)
* @param limit int, limit for result arrays (0 means unlimited) * @param int $limit
* @param offset int, starting point (0 means without offset) * limit for result arrays (0 means unlimited)
* @param criteria hash * @param int $offset
* @return hash, fields: * starting point (0 means without offset)
* @param array $criteria
* @return array
* hash, fields:
* results : array with found values * results : array with found values
* cnt : integer - number of matching values * cnt : integer - number of matching values
*/ */
@ -396,29 +476,42 @@ class DataEngine{
"WHERE $sqlCond"; "WHERE $sqlCond";
// echo "\n---\n$sql\n---\n"; // echo "\n---\n$sql\n---\n";
$cnt = $this->_getNumRows($sql); $cnt = $this->_getNumRows($sql);
if(PEAR::isError($cnt)) return $cnt; if (PEAR::isError($cnt)) {
return $cnt;
}
$res = $this->dbc->getCol($sql.$limitPart); $res = $this->dbc->getCol($sql.$limitPart);
if(PEAR::isError($res)) return $res; if (PEAR::isError($res)) {
if(!is_array($res)) $res = array(); return $res;
}
if (!is_array($res)) {
$res = array();
}
return array('results'=>$res, 'cnt'=>$cnt); return array('results'=>$res, 'cnt'=>$cnt);
} }
/** /**
* Get number of rows in query result * Get number of rows in query result
* *
* @param query string, sql query * @param string $query
* @return int, number of rows in query result * SQL query
* @return int
* Number of rows in query result
*/ */
function _getNumRows($query) function _getNumRows($query)
{ {
$rh = $this->dbc->query($query); $rh = $this->dbc->query($query);
if(PEAR::isError($rh)) return $rh; if (PEAR::isError($rh)) {
return $rh;
}
$cnt = $rh->numRows(); $cnt = $rh->numRows();
if(PEAR::isError($cnt)) return $cnt; if (PEAR::isError($cnt)) {
return $cnt;
}
$rh->free(); $rh->free();
return $cnt; return $cnt;
} }
} } // class DataEngine
?> ?>