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<?php
namespace SMW;
use FormatJson;
use SMWQueryResult;
/**
* Print links to JSON files representing query results.
*
* @see http://www.semantic-mediawiki.org/wiki/Help:JSON_format
*
* @since 1.5.3
*
*
* @license GNU GPL v2 or later
* @author mwjames
* @author Jeroen De Dauw < jeroendedauw@gmail.com >
* @author Fabian Howahl
*/
/**
* Print links to JSON files representing query results.
*
* @ingroup QueryPrinter
*/
class JsonResultPrinter extends FileExportPrinter {
/**
* Returns human readable label for this printer
* @codeCoverageIgnore
*
* @return string
*/
public function getName() {
return $this->msg( 'smw_printername_json' )->text();
}
/**
* @see SMWIExportPrinter::getMimeType
*
* @since 1.8
*
* @param SMWQueryResult $queryResult
*
* @return string
*/
public function getMimeType( SMWQueryResult $queryResult ) {
return 'application/json';
}
/**
* @see SMWIExportPrinter::getFileName
*
* @since 1.8
*
* @param SMWQueryResult $queryResult
*
* @return string|boolean
*/
public function getFileName( SMWQueryResult $queryResult ) {
if ( $this->getSearchLabel( SMW_OUTPUT_WIKI ) !== '' ) {
return str_replace( ' ', '_', $this->getSearchLabel( SMW_OUTPUT_WIKI ) ) . '.json';
}
return 'result.json';
}
/**
* Returns a filename that is to be sent to the caller
*
* @param SMWQueryResult $res
* @param $outputMode integer
*
* @return string
*/
protected function getResultText( SMWQueryResult $res, $outputMode ) {
if ( $outputMode == SMW_OUTPUT_FILE ) {
// No results, just bailout
if ( $res->getCount() == 0 ){
return $this->params['default'] !== '' ? $this->params['default'] : '';
}
$flags = $this->params['prettyprint'] ? JSON_PRETTY_PRINT : 0;
$flags = $flags | ( $this->params['unescape'] ? JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES : 0 );
// Serialize queryResult
if ( isset( $this->params['type'] ) && $this->params['type'] === 'simple' ) {
$result = $this->serializeAsSimpleList( $res );
} else {
$result = array_merge(
$res->serializeToArray(),
[ 'rows' => $res->getCount() ]
);
}
$result = json_encode(
$result,
$flags
);
} else {
// Create a link that points to the JSON file
$result = $this->getLink( $res, $outputMode )->getText( $outputMode, $this->mLinker );
// Code can be viewed as HTML if requested, no more parsing needed
$this->isHTML = $outputMode == SMW_OUTPUT_HTML;
}
return $result;
}
/**
* @see SMWResultPrinter::getParamDefinitions
* @codeCoverageIgnore
*
* @since 1.8
*
* @param ParamDefinition[] $definitions
*
* @return array
*/
public function getParamDefinitions( array $definitions ) {
$params = parent::getParamDefinitions( $definitions );
$params['searchlabel']->setDefault( $this->msg( 'smw_json_link' )->inContentLanguage()->text() );
$params['limit']->setDefault( 100 );
$params['type'] = [
'values' => [ 'simple', 'full' ],
'default' => 'full',
'message' => 'smw-paramdesc-json-type',
];
$params['prettyprint'] = [
'type' => 'boolean',
'default' => '',
'message' => 'smw-paramdesc-prettyprint',
];
$params['unescape'] = [
'type' => 'boolean',
'default' => '',
'message' => 'smw-paramdesc-json-unescape',
];
return $params;
}
private function serializeAsSimpleList( $res ) {
$result = [];
while ( $row = $res->getNext() ) {
$item = [];
$subject = '';
foreach ( $row as /* SMWResultArray */ $field ) {
$label = $field->getPrintRequest()->getLabel();
if ( $label === '' ) {
continue;
}
$values = [];
$subject = $field->getResultSubject()->getHash();
while ( ( $dataValue = $field->getNextDataValue() ) !== false ) {
$values[] = $dataValue->getWikiValue();
}
$item[$label] = $values;
}
if ( $this->params['mainlabel'] === '-' || $subject === '' ) {
$result[] = $item;
} else {
$result[$subject] = $item;
}
}
return $result;
}
}
|
