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<?php
/**
* @license GNU GPL v2+
* @since 1.3
*
* @author Jason Zhang
* @author Toni Hermoso Pulido
* @author mwjames
*/
namespace SFS;
use Parser;
use SMWQueryProcessor as QueryProcessor;
use InvalidArgumentException;
use MWDebug;
class ApiSemanticFormsSelectRequestProcessor {
/**
* @var Parser
*/
private $parser;
/**
* @var boolean
*/
private $debugFlag = false;
/**
* @since 1.3
*
* @param Parser $parser
*/
public function __construct( Parser $parser ) {
$this->parser = $parser;
}
/**
* @since 1.3
*
* @param boolean $debugFlag
*/
public function setDebugFlag( $debugFlag ) {
$this->debugFlag = $debugFlag;
}
/**
* @since 1.3
*
* @param array $parameters
*
* @return string
*/
public function getJsonDecodedResultValuesForRequestParameters( array $parameters ) {
if ( !isset( $parameters['query'] ) || !isset( $parameters['sep'] ) ) {
throw new InvalidArgumentException( 'Missing an query parameter' );
}
$this->parser->firstCallInit();
$json = [];
if ( isset( $parameters['approach'] ) && $parameters['approach'] == 'smw' ) {
$json = $this->doProcessQueryFor( $parameters['query'], $parameters['sep'] );
} else {
$json = $this->doProcessFunctionFor( $parameters['query'], $parameters['sep'] );
}
// I have no idea why we first encode and and then decode here??
return json_decode( $json );
}
private function doProcessQueryFor( $querystr, $sep = "," ) {
$querystr = str_replace(
[ "<", ">", "sep=;" ],
[ "<", ">", "sep={$sep};" ],
$querystr
);
$rawparams = explode( ";", $querystr );
$f = str_replace( ";", "|", $rawparams[0] );
$rawparams[0] = $this->parser->replaceVariables( $f );
if ( $this->debugFlag ) {
error_log( implode( "|", $rawparams ) );
}
list( $query, $params ) = QueryProcessor::getQueryAndParamsFromFunctionParams( $rawparams, SMW_OUTPUT_WIKI, QueryProcessor::INLINE_QUERY, false );
$result = QueryProcessor::getResultFromQuery( $query, $params, SMW_OUTPUT_WIKI, QueryProcessor::INLINE_QUERY );
$values = $this->getFormattedValuesFrom( $sep, $result );
return json_encode( [
"values" => $values,
"count" => count( $values )
] );
}
private function doProcessFunctionFor( $query, $sep = "," ) {
$query = str_replace(
[ "<", ">", "sep=;" ],
[ "<", ">", "sep={$sep};" ],
$query
);
$f = str_replace( ";", "|", $query );
if ( $this->debugFlag ) {
error_log( $f );
}
$values = $this->getFormattedValuesFrom(
$sep,
$this->parser->replaceVariables( $f )
);
return json_encode( [
"values" => $values,
"count" => count( $values )
] );
}
private function getFormattedValuesFrom( $sep, $values ) {
if ( strpos( $values, $sep ) === false ) {
return [ $values ];
}
$values = explode( $sep, $values );
$values = array_map( "trim", $values );
$values = array_unique( $values );
// TODO: sorting here will destroy any sort defined in the query, e.g. in case sorting for labels (instead of mainlable)
//sort( $values );
array_unshift( $values, "" );
return $values;
}
}
|
