JsonLD::processNodeProperty() - Code Metrics - Inspection of "Fixed problem with multi-valued JSON-LD properties" - jkphl/micrometa - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( a30c47...c44150 )

by Joschi

created 2017-06-15 21:30 UTC

JsonLD::processNodeProperty() B

↳ Parent: JsonLD

Complexity

Conditions	5
Paths	5

Size

Total Lines	17
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	9
CRAP Score	5

Importance

Changes

Metric	Value
c	0
b	0
f	0
dl	0
loc	17
ccs	9
cts	9
cp	1
rs	8.8571
cc	5
eloc	8
nc	5
nop	3
crap	5

<?php

/**
 * micrometa
 *
 * @category Jkphl
 * @package Jkphl\Micrometa
 * @subpackage Jkphl\Micrometa\Infrastructure\Parser
 * @author Joschi Kuphal <[email protected]> / @jkphl
 * @copyright Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl
 * @license http://opensource.org/licenses/MIT The MIT License (MIT)
 */

/***********************************************************************************
 *  The MIT License (MIT)
 *
 *  Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl
 *
 *  Permission is hereby granted, free of charge, to any person obtaining a copy of
 *  this software and associated documentation files (the "Software"), to deal in
 *  the Software without restriction, including without limitation the rights to
 *  use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 *  the Software, and to permit persons to whom the Software is furnished to do so,
 *  subject to the following conditions:
 *
 *  The above copyright notice and this permission notice shall be included in all
 *  copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 *  FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 *  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 *  IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 *  CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 ***********************************************************************************/

namespace Jkphl\Micrometa\Infrastructure\Parser;

use Jkphl\Micrometa\Application\Contract\ParsingResultInterface;
use Jkphl\Micrometa\Infrastructure\Parser\JsonLD\CachingContextLoader;
use Jkphl\Micrometa\Infrastructure\Parser\JsonLD\VocabularyCache;
use Jkphl\Micrometa\Ports\Format;
use ML\JsonLD\Exception\JsonLdException;
use ML\JsonLD\JsonLD as JsonLDParser;
use ML\JsonLD\LanguageTaggedString;
use ML\JsonLD\Node;
use ML\JsonLD\NodeInterface;
use ML\JsonLD\TypedValue;
use Psr\Http\Message\UriInterface;
use Psr\Log\LoggerInterface;

/**
 * JsonLD parser
 *
 * @package Jkphl\Micrometa
 * @subpackage Jkphl\Micrometa\Infrastructure
 * @see https://jsonld-examples.com/
 * @see http://www.dr-chuck.com/csev-blog/2016/04/json-ld-performance-sucks-for-api-specs/
 */
class JsonLD extends AbstractParser
{
    /**
     * Format
     *
     * @var int
     */
    const FORMAT = Format::JSON_LD;
    /**
     * Regex pattern for matching leading comments in a JSON string
     *
     * @var string
     */
    const JSON_COMMENT_PATTERN = '#(/\*([^*]|[\r\n]|(\*+([^*/]|[\r\n])))*\*+/)|([\s\t]//.*)|(^//.*)#';
    /**
     * Vocabulary cache
     *
     * @var VocabularyCache
     */
    protected $vocabularyCache;
    /**
     * Context loader
     *
     * @var CachingContextLoader
     */
    protected $contextLoader;

    /**
     * JSON-LD parser constructor
     *
     * @param UriInterface $uri Base URI
     * @param LoggerInterface $logger Logger
     */
    public function __construct(UriInterface $uri, LoggerInterface $logger)
    {
        parent::__construct($uri, $logger);
        $this->vocabularyCache = new VocabularyCache();
        $this->contextLoader = new CachingContextLoader($this->vocabularyCache);
    }

    /**
     * Parse a DOM document
     *
     * @param \DOMDocument $dom DOM Document
     * @return ParsingResultInterface Micro information items
     */
    public function parseDom(\DOMDocument $dom)
    {
        $this->logger->info('Running parser: '.(new \ReflectionClass(__CLASS__))->getShortName());
        $items = [];

        // Find and process all JSON-LD documents
        $xpath = new \DOMXPath($dom);
        $jsonLDDocs = $xpath->query('//*[local-name(.) = "script"][@type = "application/ld+json"]');
        $this->logger->debug('Processing '.$jsonLDDocs->length.' JSON-LD documents');

        // Run through all JSON-LD documents
        foreach ($jsonLDDocs as $jsonLDDoc) {
            $jsonLDDocSource = preg_replace(self::JSON_COMMENT_PATTERN, '', $jsonLDDoc->textContent);
            $i = $this->parseDocument($jsonLDDocSource);
            $items = array_merge($items, $i);
            break;
        }

        return new ParsingResult(self::FORMAT, $items);
    }

    /**
     * Parse a JSON-LD document
     *
     * @param string $jsonLDDocSource JSON-LD document
     * @return array Items
     */
    protected function parseDocument($jsonLDDocSource)
    {
        // Unserialize the JSON-LD document
        $jsonLDDoc = @json_decode($jsonLDDocSource);

        // If this is not a valid JSON document: Return
        if (!is_object($jsonLDDoc) && !is_array($jsonLDDoc)) {
            $this->logger->error('Skipping invalid JSON-LD document');
            return [];
        }

        // Parse the document
        return array_filter(
            is_array($jsonLDDoc) ?
                array_map([$this, 'parseRootNode'], $jsonLDDoc) : [$this->parseRootNode($jsonLDDoc)]
        );
    }

    /**
     * Parse a JSON-LD root node
     *
     * @param \stdClass $jsonLDRoot JSON-LD root node
     */
    protected function parseRootNode($jsonLDRoot)
    {
        $item = null;

        try {
            $jsonDLDocument = JsonLDParser::getDocument($jsonLDRoot, ['documentLoader' => $this->contextLoader]);

            // Run through all nodes to parse the first one
            /** @var Node $node */
            foreach ($jsonDLDocument->getGraph()->getNodes() as $node) {
                $item = $this->parseNode($node);
                break;
            }
        } catch (JsonLdException $exception) {
            $this->logger->error($exception->getMessage(), ['exception' => $exception]);
        }

        return $item;
    }

    /**
     * Parse a JSON-LD node
     *
     * @param NodeInterface $node Node
     * @return \stdClass Item
     */
    protected function parseNode(NodeInterface $node)
    {
        return (object)[
            'type' => $this->parseNodeType($node),
            'id' => $node->getId() ?: null,
            'properties' => $this->parseNodeProperties($node),
        ];
    }

    /**
     * Parse the type of a JSON-LD node
     *
     * @param NodeInterface $node Node
     * @return array Item type
     */
    protected function parseNodeType(NodeInterface $node)
    {
        /** @var Node $itemType */
        return ($itemType = $node->getType()) ? [$this->vocabularyCache->expandIRI($itemType->getId())] : [];
    }

    /**
     * Parse the properties of a JSON-LD node
     *
     * @param NodeInterface $node Node
     * @return array Item properties
     */
    protected function parseNodeProperties(NodeInterface $node)
    {
        $properties = [];

        // Run through all node properties
        foreach ($node->getProperties() as $name => $property) {
            // Skip the node type
            if ($name === Node::TYPE) {
                continue;
            }

            // Initialize the property (if necessary)
            $this->initializeNodeProperty($name, $properties);

            // Parse and process the property value
            $this->processNodeProperty($name, $this->parse($property), $properties);
        }

        return $properties;
    }

    /**
     * Initialize a JSON-LD node property (if necessary)
     *
     * @param string $name Property name
     * @param array $properties Item properties
     */
    protected function initializeNodeProperty($name, array &$properties)
    {
        if (empty($properties[$name])) {
            $properties[$name] = $this->vocabularyCache->expandIRI($name);
            $properties[$name]->values = [];
        }
    }

    /**
     * Process a property value
     *
     * @param string $name Property name
     * @param \stdClass|array|string $value Property value
     * @param array $properties Item properties
     */
    protected function processNodeProperty($name, $value, array &$properties)
    {
        // If this is a nested item
        if (is_object($value)) {
            $this->processNodePropertyObject($name, $value, $properties);

            // Else: If this is a value list
        } elseif (is_array($value)) {
            foreach ($value as $listValue) {
                $this->processNodeProperty($name, $listValue, $properties);
            }

            // Else: If the value is not empty
        } elseif ($value) {
            $properties[$name]->values[] = $value;
        }
    }

    /**
     * Process a property value object
     *
     * @param string $name Property name
     * @param \stdClass $value Property value
     * @param array $properties Properties
     */
    protected function processNodePropertyObject($name, $value, array &$properties)
    {
        if (!empty($value->type) || !empty($value->lang)) {
            $properties[$name]->values[] = $value;

            // @type = @id
        } elseif (!empty($value->id)) {
            $properties[$name]->values[] = $value->id;
        }
    }

    /**
     * Parse a JSON-LD fragment
     *
     * @param NodeInterface|LanguageTaggedString|TypedValue|array $jsonLD JSON-LD fragment
     * @return \stdClass|string|array Parsed fragment
     */
    protected function parse($jsonLD)
    {
        // If it's a node object
        if ($jsonLD instanceof NodeInterface) {
            return $this->parseNode($jsonLD);

            // Else if it's a language tagged string
        } elseif ($jsonLD instanceof LanguageTaggedString) {
            return $this->parseLanguageTaggedString($jsonLD);

            // Else if it's a typed value
        } elseif ($jsonLD instanceof TypedValue) {
            return $this->parseTypedValue($jsonLD);
        }

        // Else if it's a list of items
        //elseif (is_array($jsonLD)) {
        return array_map([$this, 'parse'], $jsonLD);
//      }
    }

    /**
     * Parse a language tagged string
     *
     * @param LanguageTaggedString $value Language tagged string
     * @return \stdClass Value
     */
    protected function parseLanguageTaggedString(LanguageTaggedString $value)
    {
        return (object)['value' => $value->getValue(), 'lang' => $value->getLanguage()];
    }

    /**
     * Parse a typed value
     *
     * @param TypedValue $value Typed value
     * @return string Value
     */
    protected function parseTypedValue(TypedValue $value)
    {
        return $value->getValue();
    }
}


1		<?php
2
3		/**
4		* micrometa
5		*
6		* @category Jkphl
7		* @package Jkphl\Micrometa
8		* @subpackage Jkphl\Micrometa\Infrastructure\Parser
9		* @author Joschi Kuphal <[email protected]> / @jkphl
10		* @copyright Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl
11		* @license http://opensource.org/licenses/MIT The MIT License (MIT)
12		*/
13
14		/***********************************************************************************
15		* The MIT License (MIT)
16		*
17		* Copyright © 2017 Joschi Kuphal <[email protected]> / @jkphl
18		*
19		* Permission is hereby granted, free of charge, to any person obtaining a copy of
20		* this software and associated documentation files (the "Software"), to deal in
21		* the Software without restriction, including without limitation the rights to
22		* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
23		* the Software, and to permit persons to whom the Software is furnished to do so,
24		* subject to the following conditions:
25		*
26		* The above copyright notice and this permission notice shall be included in all
27		* copies or substantial portions of the Software.
28		*
29		* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
30		* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
31		* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
32		* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
33		* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
34		* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35		***********************************************************************************/
36
37		namespace Jkphl\Micrometa\Infrastructure\Parser;
38
39		use Jkphl\Micrometa\Application\Contract\ParsingResultInterface;
40		use Jkphl\Micrometa\Infrastructure\Parser\JsonLD\CachingContextLoader;
41		use Jkphl\Micrometa\Infrastructure\Parser\JsonLD\VocabularyCache;
42		use Jkphl\Micrometa\Ports\Format;
43		use ML\JsonLD\Exception\JsonLdException;
44		use ML\JsonLD\JsonLD as JsonLDParser;
45		use ML\JsonLD\LanguageTaggedString;
46		use ML\JsonLD\Node;
47		use ML\JsonLD\NodeInterface;
48		use ML\JsonLD\TypedValue;
49		use Psr\Http\Message\UriInterface;
50		use Psr\Log\LoggerInterface;
51
52		/**
53		* JsonLD parser
54		*
55		* @package Jkphl\Micrometa
56		* @subpackage Jkphl\Micrometa\Infrastructure
57		* @see https://jsonld-examples.com/
58		* @see http://www.dr-chuck.com/csev-blog/2016/04/json-ld-performance-sucks-for-api-specs/
59		*/
60		class JsonLD extends AbstractParser
61		{
62		/**
63		* Format
64		*
65		* @var int
66		*/
67		const FORMAT = Format::JSON_LD;
68		/**
69		* Regex pattern for matching leading comments in a JSON string
70		*
71		* @var string
72		*/
73		const JSON_COMMENT_PATTERN = '#(/\([^]\|[\r\n]\|(\+([^/]\|[\r\n])))\+/)\|([\s\t]//.)\|(^//.)#';
74		/**
75		* Vocabulary cache
76		*
77		* @var VocabularyCache
78		*/
79		protected $vocabularyCache;
80		/**
81		* Context loader
82		*
83		* @var CachingContextLoader
84		*/
85		protected $contextLoader;
86
87		/**
88		* JSON-LD parser constructor
89		*
90		* @param UriInterface $uri Base URI
91		* @param LoggerInterface $logger Logger
92		*/
93	5	public function __construct(UriInterface $uri, LoggerInterface $logger)
94		{
95	5	parent::__construct($uri, $logger);
96	5	$this->vocabularyCache = new VocabularyCache();
97	5	$this->contextLoader = new CachingContextLoader($this->vocabularyCache);
98	5	}
99
100		/**
101		* Parse a DOM document
102		*
103		* @param \DOMDocument $dom DOM Document
104		* @return ParsingResultInterface Micro information items
105		*/
106	4	public function parseDom(\DOMDocument $dom)
107		{
108	4	$this->logger->info('Running parser: '.(new \ReflectionClass(__CLASS__))->getShortName());
109	4	$items = [];
110
111		// Find and process all JSON-LD documents
112	4	$xpath = new \DOMXPath($dom);
113	4	$jsonLDDocs = $xpath->query('//*[local-name(.) = "script"][@type = "application/ld+json"]');
114	4	$this->logger->debug('Processing '.$jsonLDDocs->length.' JSON-LD documents');
115
116		// Run through all JSON-LD documents
117	4	foreach ($jsonLDDocs as $jsonLDDoc) {
118	4	$jsonLDDocSource = preg_replace(self::JSON_COMMENT_PATTERN, '', $jsonLDDoc->textContent);
119	4	$i = $this->parseDocument($jsonLDDocSource);
120	3	$items = array_merge($items, $i);
121	3	break;
122		}
123
124	3	return new ParsingResult(self::FORMAT, $items);
125		}
126
127		/**
128		* Parse a JSON-LD document
129		*
130		* @param string $jsonLDDocSource JSON-LD document
131		* @return array Items
132		*/
133	4	protected function parseDocument($jsonLDDocSource)
134		{
135		// Unserialize the JSON-LD document
136	4	$jsonLDDoc = @json_decode($jsonLDDocSource);
137
138		// If this is not a valid JSON document: Return
139	4	if (!is_object($jsonLDDoc) && !is_array($jsonLDDoc)) {
140	2	$this->logger->error('Skipping invalid JSON-LD document');
141	1	return [];
142		}
143
144		// Parse the document
145	2	return array_filter(
146	2	is_array($jsonLDDoc) ?
147	2	array_map([$this, 'parseRootNode'], $jsonLDDoc) : [$this->parseRootNode($jsonLDDoc)]
148		);
149		}
150
151		/**
152		* Parse a JSON-LD root node
153		*
154		* @param \stdClass $jsonLDRoot JSON-LD root node
155		*/
156	2	protected function parseRootNode($jsonLDRoot)
157		{
158	2	$item = null;
159
160		try {
161	2	$jsonDLDocument = JsonLDParser::getDocument($jsonLDRoot, ['documentLoader' => $this->contextLoader]);
162
163		// Run through all nodes to parse the first one
164		/** @var Node $node */
165	2	foreach ($jsonDLDocument->getGraph()->getNodes() as $node) {
166	2	$item = $this->parseNode($node);
167	2	break;
168		}
169		} catch (JsonLdException $exception) {
170		$this->logger->error($exception->getMessage(), ['exception' => $exception]);
171		}
172
173	2	return $item;
174		}
175
176		/**
177		* Parse a JSON-LD node
178		*
179		* @param NodeInterface $node Node
180		* @return \stdClass Item
181		*/
182	2	protected function parseNode(NodeInterface $node)
183		{
184		return (object)[
185	2	'type' => $this->parseNodeType($node),
186	2	'id' => $node->getId() ?: null,
187	2	'properties' => $this->parseNodeProperties($node),
188		];
189		}
190
191		/**
192		* Parse the type of a JSON-LD node
193		*
194		* @param NodeInterface $node Node
195		* @return array Item type
196		*/
197	2	protected function parseNodeType(NodeInterface $node)
198		{
199		/** @var Node $itemType */
200	2	return ($itemType = $node->getType()) ? [$this->vocabularyCache->expandIRI($itemType->getId())] : [];
201		}
202
203		/**
204		* Parse the properties of a JSON-LD node
205		*
206		* @param NodeInterface $node Node
207		* @return array Item properties
208		*/
209	2	protected function parseNodeProperties(NodeInterface $node)
210		{
211	2	$properties = [];
212
213		// Run through all node properties
214	2	foreach ($node->getProperties() as $name => $property) {
215		// Skip the node type
216	2	if ($name === Node::TYPE) {
217	2	continue;
218		}
219
220		// Initialize the property (if necessary)
221	2	$this->initializeNodeProperty($name, $properties);
222
223		// Parse and process the property value
224	2	$this->processNodeProperty($name, $this->parse($property), $properties);
225		}
226
227	2	return $properties;
228		}
229
230		/**
231		* Initialize a JSON-LD node property (if necessary)
232		*
233		* @param string $name Property name
234		* @param array $properties Item properties
235		*/
236	2	protected function initializeNodeProperty($name, array &$properties)
237		{
238	2	if (empty($properties[$name])) {
239	2	$properties[$name] = $this->vocabularyCache->expandIRI($name);
240	2	$properties[$name]->values = [];
241		}
242	2	}
243
244		/**
245		* Process a property value
246		*
247		* @param string $name Property name
248		* @param \stdClass\|array\|string $value Property value
249		* @param array $properties Item properties
250		*/
251	2	protected function processNodeProperty($name, $value, array &$properties)
252		{
253		// If this is a nested item
254	2	if (is_object($value)) {
255	2	$this->processNodePropertyObject($name, $value, $properties);
256
257		// Else: If this is a value list
258	2	} elseif (is_array($value)) {
259	1	foreach ($value as $listValue) {
260	1	$this->processNodeProperty($name, $listValue, $properties);
261		}
262
263		// Else: If the value is not empty
264	2	} elseif ($value) {
265	2	$properties[$name]->values[] = $value;
266		}
267	2	}
268
269		/**
270		* Process a property value object
271		*
272		* @param string $name Property name
273		* @param \stdClass $value Property value
274		* @param array $properties Properties
275		*/
276	2	protected function processNodePropertyObject($name, $value, array &$properties)
277		{
278	2	if (!empty($value->type) \|\| !empty($value->lang)) {
279	2	$properties[$name]->values[] = $value;
280
281		// @type = @id
282	2	} elseif (!empty($value->id)) {
283	2	$properties[$name]->values[] = $value->id;
284		}
285	2	}
286
287		/**
288		* Parse a JSON-LD fragment
289		*
290		* @param NodeInterface\|LanguageTaggedString\|TypedValue\|array $jsonLD JSON-LD fragment
291		* @return \stdClass\|string\|array Parsed fragment
292		*/
293	2	protected function parse($jsonLD)
294		{
295		// If it's a node object
296	2	if ($jsonLD instanceof NodeInterface) {
297	2	return $this->parseNode($jsonLD);
298
299		// Else if it's a language tagged string
300	2	} elseif ($jsonLD instanceof LanguageTaggedString) {
301	1	return $this->parseLanguageTaggedString($jsonLD);
302
303		// Else if it's a typed value
304	2	} elseif ($jsonLD instanceof TypedValue) {
305	2	return $this->parseTypedValue($jsonLD);
306		}
307
308		// Else if it's a list of items
309		//elseif (is_array($jsonLD)) {
310	1	return array_map([$this, 'parse'], $jsonLD);
311		// }
312		}
313
314		/**
315		* Parse a language tagged string
316		*
317		* @param LanguageTaggedString $value Language tagged string
318		* @return \stdClass Value
319		*/
320	1	protected function parseLanguageTaggedString(LanguageTaggedString $value)
321		{
322	1	return (object)['value' => $value->getValue(), 'lang' => $value->getLanguage()];
323		}
324
325		/**
326		* Parse a typed value
327		*
328		* @param TypedValue $value Typed value
329		* @return string Value
330		*/
331	2	protected function parseTypedValue(TypedValue $value)
332		{
333	2	return $value->getValue();
334		}
335		}
336

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