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<?php |
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/** |
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* Class for handling concept properties. |
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*/ |
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class ConceptProperty |
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{ |
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/** stores the property type */ |
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private $prop; |
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/** stores the property supertype */ |
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private $super; |
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/** stores the property label */ |
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private $label; |
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/** stores the property tooltip */ |
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private $tooltip; |
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/** stores the property values */ |
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private $values; |
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/** flag whether the values are sorted, as we do lazy sorting */ |
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private $is_sorted; |
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private $sort_by_notation; |
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/** |
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* Label parameter seems to be optional in this phase. |
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* @param string $prop property type eg. 'rdf:type'. |
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* @param string $label property label |
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* @param string $tooltip property tooltip/description |
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* @param string $super URI of superproperty |
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* @param boolean $sort_by_notation whether to sort the property values by their notation code |
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*/ |
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public function __construct($prop, $label, $tooltip=null, $super=null, $sort_by_notation=false) |
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{ |
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$this->prop = $prop; |
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$this->label = $label; |
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$this->tooltip = $tooltip; |
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$this->values = array(); |
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$this->is_sorted = true; |
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$this->super = $super; |
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$this->sort_by_notation = $sort_by_notation; |
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} |
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/** |
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* Gets the gettext translation for a property or returns the identifier as a fallback. |
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*/ |
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public function getLabel() |
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{ |
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// first see if we have a translation |
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// we don't maintain DC 1.1 translations separate from DC Terms |
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$prop = (substr($this->prop, 0, 5) == 'dc11:') ? |
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str_replace('dc11:', 'dc:', $this->prop) : $this->prop; |
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$label = gettext($prop); |
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if ($label != $prop) { |
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return $label; |
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} |
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// if not, see if there was a label for the property in the graph |
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if ($this->label !== null) { |
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return $this->label; |
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} |
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// when no label is found, don't show the property at all |
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return null; |
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} |
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/** |
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* Returns an alphanumeric ID for the property, suitable for use as a CSS identifier. |
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*/ |
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public function getID() |
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{ |
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return preg_replace('/[^A-Za-z0-9-]/', '_', $this->prop); |
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} |
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/** |
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* Returns text for the property tooltip. |
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* @return string |
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*/ |
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public function getDescription() |
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{ |
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$helpprop = $this->prop . "_help"; |
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// see if we have a translation with the help text |
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$help = gettext($helpprop); |
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if ($help != $helpprop) { |
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return $help; |
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} |
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// if not, see if there was a comment/definition for the property in the graph |
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if ($this->tooltip !== null) { |
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return $this->tooltip; |
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} |
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// when nothing is found, don't show the tooltip at all |
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return null; |
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} |
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/** |
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* Returns an array of the property values. |
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* @return ConceptMappingPropertyValue[] |
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*/ |
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public function getValues() |
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{ |
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if (!$this->is_sorted) { |
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$this->sortValues(); |
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} |
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return $this->values; |
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} |
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public function addValue($value) |
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{ |
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$this->values[ltrim($value->getNotation() . ' ') . $value->getLabel() . rtrim(' ' . $value->getUri())] = $value; |
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$this->is_sorted = false; |
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} |
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private function sortValues() |
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{ |
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# TODO: sort by URI as last resort |
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# Note that getLabel() returns URIs in case of no label and may return a prefixed value which affects sorting |
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if (!empty($this->values)) { |
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if ($this->sort_by_notation) { |
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uasort($this->values, function($a, $b) { |
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$anot = $a->getNotation(); |
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$bnot = $b->getNotation(); |
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if ($anot == null) { |
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if ($bnot == null) { |
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// assume that labels are unique |
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return strcoll(strtolower($a->getLabel()), strtolower($b->getLabel())); |
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} |
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return 1; |
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} |
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else if ($bnot == null) { |
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return -1; |
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} |
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else { |
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// assume that notations are unique, choose strategy |
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if ($this->sort_by_notation == "lexical") { |
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return strcoll($anot, $bnot); |
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} else { // natural |
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return strnatcasecmp($anot, $bnot); |
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} |
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} |
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}); |
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} |
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else { |
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uasort($this->values, function($a, $b) { |
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// assume that labels are unique |
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return strcoll(strtolower($a->getLabel()), strtolower($b->getLabel())); |
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}); |
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} |
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} |
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$this->is_sorted = true; |
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} |
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/** |
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* Returns property type as a string. |
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* @return string eg. 'rdf:type'. |
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*/ |
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public function getType() |
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{ |
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return $this->prop; |
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} |
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/** |
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* Returns property supertype (?property skos:subPropertyOf ?super) as a string. |
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* @return string eg. 'skos:hiddenLabel'. |
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*/ |
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public function getSubPropertyOf() |
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{ |
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return $this->super; |
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} |
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} |
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NatLibFi /
Skosmos
