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parser.php
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parser.php
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<?php
class elasticParser {
private mixed $data;
private mixed $result;
private bool $debug;
private array $defaultParameters = [
"size" => 20,
"from" => 0,
"fields" => [], // Searching in all the fields that the index have
];
// Used for Highlight part
private array $usedFields = [];
/**
* Do a parsing from a Front-type JSON to a ElasticSearch-type JSON Query
*
* @param string $file_name
* @param string $index
* @param bool $debug
*/
public function __construct(string $file_name, string $index = 'contacts', bool $debug = false)
{
$this->debug = $debug;
if ($debug) {
printf("--- DEBUG MODE ---\n");
}
$this->constructData($file_name, $index);
$this->transformData();
$this->printResult($file_name);
}
/**
* Construct the SearchRequest into a data table
*
* @param string $filename
* @param string $index
* @return void
*/
private function constructData(string $filename, string $index = 'contacts'): void
{
$json = "";
$file = fopen('./json_tests/'.$filename, "r") or die("Unable to open file!");
while(!feof($file)) {
$json .= fgets($file);
}
fclose($file);
$this->data = json_decode($json, true);
$this->data['params']['index'] = $index;
printf("Front JSON Parsed.\n");
// debug
/*if ($this->debug) {
//printf($json . "\n");
var_dump($this->data);
printf("\n");
}*/
}
/**
* Print the JSON in a file
*
* @param string $filename
* @return void
*/
private function printResult(string $filename): void {
////// Send JSON (Here just print/write for the example)
file_put_contents('./json_results/result_'.$filename, json_encode($this->result, JSON_PRETTY_PRINT));
printf("-------- Back JSON \n");
var_dump($this->result);
printf("--------\n\n");
}
/**
* Transform data into readable JSON for ElasticSearch
*
* @return void
*/
private function transformData(): void
{
// Params
$this->constructParams();
//// Search construction
$this->constructQuery();
// Fields
// Terms Module (A special query for a special term)
// OR Module (must)
// AND Module (should)
// NOT Module (must_not)
// XOR Module (should + minimum_should_match = -1) --> MAX 2 VALUES
// https://stackoverflow.com/questions/28538760/elasticsearch-bool-query-combine-must-with-or
// Highlights
$this->constructHighlight();
////// Save the actual used ElasticSearch JSON, so we can prev and next with this
/// static var with the data version
}
/**
* Contruct the 'params' part of the ElasticSearch Query
*
* @return void
*/
private function constructParams(): void
{
$this->result['index'] = $this->data['params']['index'];
$this->result['size'] = $this->data['params']['size'] ?? $this->defaultParameters['size'];
// Offset by the number of items 'per page' using size
if (isset($this->data['params']['from']) && $this->data['params']['from'] != 0)
$this->result['from'] = isset($this->data['params']['from']) ?
$this->data['params']['from'] * $this->result['size'] :
$this->defaultParameters['from'];
if (isset($this->data['query']['rules'])) {
// Add the body and query part
$this->result['body']['query'] = [];
}
}
/**
* Contruct the 'query' part of the ElasticSearch Query
*
* @return void
*/
private function constructQuery(): void
{
//Geo case
if (isset($this->data['query']['geo'])) {
printf("Geo Search Add\n");
$this->result['body']['sort'][] = [
"_geo_distance" => [
"pin.location" => isset($this->data['query']['geo']) ?
[$this->data['query']['geo']['longitude'] ?? 0, $this->data['query']['geo']['latitude'] ?? 0] :
[0, 0],
"order" => $this->data['query']['geo']['order'] ?? "asc",
"distance" => $this->data['query']['geo']['maxDistanceKm'] ?? 20,
"unit" => "km",
"mode" => "min",
"distance_type" => "arc",
"ignore_unmapped"=> true
]
];
}
// build the 'query' part of the request
if (isset($this->data['query']['rules'])) {
$this->result['body']['query'] = $this->recursOperator($this->data['query']['rules']);
}
}
/**
* Add all the restriction to the 'query' part of the ElasticSearch Query
*
* @param mixed $actualObject
* @return array
*/
private function recursOperator(mixed $actualObject): array
{
// Initialize vars
$toAdd = null;
$mustAdd = $mustNotAdd = $shouldAdd = [];
$minShould = null; // Number of Should that need to match in the response (in this bool scope)
foreach ($actualObject as $rule) {
$values = [];
// Check what part of the rule is set of not
$partSet = [
'field' => isset($rule['field']),
'operator' => isset($rule['operator']),
'values' => isset($rule['values'])
];
/*if ($this->debug) {
printf("Part Set Rule :\n");
var_dump($partSet);
var_dump($rule);
}*/
// Keyword Search
if (isset($rule['field']) && $rule['isKeyword']) {
$rule['field'] .= '.keyword';
}
if (!$partSet['operator']) {
if (!$partSet['field'] && $partSet['values']) {
// Simple Search
if ($this->debug)
printf("Simple Search\n");
$mustAdd['query_string'] = [
'query' => isset($rule['values'][0]) ?
$rule['values'][0] . '*' :
'',
'fields' => $this->data['params']['usedFields'] ?? $this->defaultParameters['fields'],
];
} else {
$this->usedFields[] = $rule['field'];
// Term Module
if ($this->debug)
printf("Term Add\n");
$mustAdd = $this->addTerms($mustAdd, $rule);
}
}
// Go deeper if needed - Values
if ($partSet['values'] && is_array($rule['values'])) {
foreach ($rule['values'] as $value) {
if (is_array($value)) {
// Is another rule
if ($this->debug) {
printf("Recursive add\nTO ADD ------------->");
var_dump($value);
}
$values[] = $this->recursOperator([$value]);
} else {
$values[] = $value;
}
}
$rule['values'] = $values;
}
// Operators
if ($partSet['operator']) {
$this->usedFields[] = $rule['field'];
switch ($rule['operator']) {
case 'AND':
if ($this->debug)
printf("Operator AND\n");
$mustAdd = $this->addTerms($mustAdd, $rule);
break;
case 'NOT':
if ($this->debug)
printf("Operator NOT\n");
$mustNotAdd = $this->addTerms($mustNotAdd, $rule);
break;
case 'XOR':
if ($this->debug)
printf("OperatorXOR\n");
$minShould = -1; // use only one of the two value in the should
case 'OR':
if ($this->debug && $rule['operator'] != "XOR")
printf("Operator OR\n");
$shouldAdd = $this->addTerms($shouldAdd, $rule);
break;
default:
break;
}
}
}
// Bool build to return
if (!empty($mustAdd))
$toAdd['bool']['must'][] = $mustAdd;
if (!empty($shouldAdd))
$toAdd['bool']['should'][] = $shouldAdd;
if (!empty($mustNotAdd))
$toAdd['bool']['must_not'][] = $mustNotAdd;
if (!empty($minShould))
$toAdd['bool']['minimum_should_match'] = $minShould;
return $toAdd;
}
/**
* Add a term to the list of restrictions
*
* @param array $toAdd
* @param array $rule
* @return array
*/
private function addTerms(array $toAdd, array $rule): array
{
foreach ($rule['values'] as $value) {
$termSet = false;
$counter = 0;
foreach ((is_array($toAdd) ? $toAdd : []) as $terms) {
// toAdd[];
foreach ((is_array($terms) ? $terms : []) as $term) {
// $toAdd[][];
if ($this->debug) {
printf("---\n");
var_dump($termSet);
var_dump($term);
printf("---\n");
}
if (!$termSet && !isset($term[$rule['field']])) {
// $toAdd[]['terms']
if ($this->debug)
printf("--> AddAdd - Counter ".$counter."\n");
$toAdd[$counter]['terms'][$rule['field']] = $value;
$termSet = true;
}
$counter += 1;
}
}
if (!$termSet) {
if ($this->debug)
printf("--> NewAdd\n");
$toAdd[]['terms'][$rule['field']] = $value;
}
/*if ($this->debug) {
printf("Rule ->\n");
var_dump($rule);
printf("-------\n\nToAdd ->\n");
var_dump($toAdd);
printf("-------\n\nValue ->\n");
var_dump($value);
printf("-------\n\n");
}*/
}
return $toAdd;
}
/**
* Add all the 'Highlight' part in the search query
*
* @return void
*/
private function constructHighlight() {
// No filtered query -> All fields
if ($this->usedFields === []) {
$this->result['body']['highlight'] = [
"require_field_match" => false,
"fields" => [
"body" => [
"pre_tags" => ['<span class="highlighted">'],
"post_tags" => ["</span>"]
]
]
];
return ;
}
// Filtered query -> Adding highlights for all the filtered fields
$this->result['body']['highlight'] = [
"pre_tags" => ['<span class="highlighted">'],
"post_tags" => ["</span>"],
"order" => "score"
];
foreach ($this->usedFields as $usedField) {
if (!isset($this->result['body']['highlight'][$usedField])) {
$this->result['body']['highlight'][$usedField] = [
"type" => "plain",
"fragment_size" => 15,
"number_of_fragment" => 3,
"fragmenter" => "span"
];
}
}
}
}
////////////////////////////////// V2
class ElasticParserV2
{
private mixed $data;
private mixed $result;
private mixed $config;
private array $operatorTrad = [
"OR" => 'should',
"XOR" => 'should',
"AND" => 'must',
"NOT" => 'must_not',
];
/**
* Do a parsing from a Front-type JSON to a ElasticSearch-type JSON Query
*
* @param array $data
* @param array $config
*/
public function __construct(array $data, array $config)
{
// Construct the data + config
$this->data = $data;
$this->config = $config;
$this->data['params']['index'] = $this->config["elastic"]['ELASTIC_MAPPING']['index'];
}
/**
* Parse all the data into a
*
* @return bool
*/
public function parseData(): bool
{
// Parse every data
if (!$this->transformData()) {
// Only Wildcard Error
return false;
}
return true;
}
/**
* Return the result of the Parser
*
* @return array
*/
public function getResult(): array {
return $this->result;
}
/**
* Transform data into readable JSON for ElasticSearch
*
* @return void
*/
private function transformData(): bool
{
// Params
$this->constructParams();
//// Search construction
if (!$this->constructQuery()) {
return false;
}
// Fields
// Terms Module (A special query for a special term)
// OR Module (must)
// AND Module (should)
// NOT Module (must_not)
// XOR Module (should + minimum_should_match = -1) --> MAX 2 VALUES
// https://stackoverflow.com/questions/28538760/elasticsearch-bool-query-combine-must-with-or
// Highlights
$this->constructHighlight();
return true;
}
/**
* Contruct the 'params' part of the ElasticSearch Query
*
* @return void
*/
private function constructParams(): void
{
$this->result['index'] = $this->data['params']['index'];
$this->result['size'] = $this->data['params']['size'] ?? $this->config['elastic']['ELASTIC_SIZE'];
// Offset by the number of items 'per page' using size
if (isset($this->data['params']['from']) && $this->data['params']['from'] != 0)
$this->result['from'] = isset($this->data['params']['from']) ?
$this->data['params']['from'] * $this->result['size'] :
0;
if (isset($this->data['query']['rules'])) {
// Add the body and query part
$this->result['body']['query'] = [];
}
}
/**
* Contruct the 'query' part of the ElasticSearch Query
*
* @return void
*/
private function constructQuery(): bool
{
//Geo case
if (isset($this->data['query']['geo'])) {
$this->result['body']['sort'][] = [
"_geo_distance" => [
"pin.location" => isset($this->data['query']['geo']) ?
[$this->data['query']['geo']['longitude'] ?? 0, $this->data['query']['geo']['latitude'] ?? 0] :
[0, 0],
"order" => $this->data['query']['geo']['order'] ?? "asc",
"distance" => $this->data['query']['geo']['maxDistanceKm'] ?? 20,
"unit" => "km",
"mode" => "min",
"distance_type" => "arc",
"ignore_unmapped"=> true
]
];
}
// build the 'query' part of the request
if (isset($this->data['query']['rules'])) {
return $this->constructNestedQuery($this->data['query']['rules']);
}
return true;
}
/**
* Add all the restriction to the 'query' part of the ElasticSearch Query
*
* @param mixed $actualObject
* @return array
*/
private function recursOperator(mixed $actualObject): array
{
// Initialize vars
$toAdd = null;
$mustAdd = $mustNotAdd = $shouldAdd = [];
$minShould = null; // Number of Should that need to match in the response (in this bool scope)
foreach ($actualObject as $rule) {
$values = [];
// Check what part of the rule is set of not
$partSet = [
'field' => isset($rule['field']),
'operator' => isset($rule['operator']),
'values' => isset($rule['values'])
];
// Keyword Search
if (isset($rule['field']) && $rule['isKeyword']) {
$rule['field'] .= '.keyword';
}
if (!$partSet['operator']) {
if (!$partSet['field'] && $partSet['values']) {
// Simple Search
$mustAdd['query_string'] = [
'query' => isset($rule['values'][0]) ?
$rule['values'][0] . '*' :
'',
'fields' => $this->data['params']['usedFields'] ?? [],
];
} else {
// Term Module
$mustAdd = $this->addTerms($mustAdd, $rule);
}
}
// Go deeper if needed - Values
if ($partSet['values'] && is_array($rule['values'])) {
foreach ($rule['values'] as $value) {
if (is_array($value)) {
// Is another rule
$values[] = $this->recursOperator([$value]);
} else {
$values[] = $value;
}
}
$rule['values'] = $values;
}
// Operators
if ($partSet['operator']) {
switch ($rule['operator']) {
case 'AND':
$mustAdd = $this->addTerms($mustAdd, $rule);
break;
case 'NOT':
$mustNotAdd = $this->addTerms($mustNotAdd, $rule);
break;
case 'XOR':
$minShould = -1; // use only one of the two value in the should
case 'OR':
$shouldAdd = $this->addTerms($shouldAdd, $rule);
break;
default:
break;
}
}
}
// Bool build to return
if (!empty($mustAdd))
$toAdd['bool']['must'] = $mustAdd;
if (!empty($shouldAdd))
$toAdd['bool']['should'] = $shouldAdd;
if (!empty($mustNotAdd))
$toAdd['bool']['must_not'] = $mustNotAdd;
if (!empty($minShould))
$toAdd['bool']['minimum_should_match'] = $minShould;
return $toAdd;
}
/**
* Build of the query part
*
* @param array $rules
* @return array|bool
*/
private function constructNestedQuery(array $rules): bool
{
$queryOperators = $this->constructOperators($rules);
if ($queryOperators === false) {
// Wildcard Error
return false;
}
// Construct Highlights
$highlights = [
"pre_tags" => ['<span class="highlighted">'],
"post_tags" => ["</span>"],
"order" => "score"
];
$highlights['fields']['*'] = [
'fragment_size' => 12,
'number_of_fragments' => 3,
'fragmenter' => 'span'
];
// Nested Contacts Path
$emails['nested'] = [
'path' => "sites.contacts.emails",
'query' => $queryOperators,
'inner_hits' => $highlights
];
$phones['nested'] = [
'path' => "sites.contacts.phones",
'query' => $queryOperators,
'inner_hits' => $highlights
];
$nestedContacts['nested'] = [
'path' => "sites.contacts",
'inner_hits' => $highlights
];
$nestedContacts['query']['bool']['should'][] = $queryOperators;
$nestedContacts['query']['bool']['should'][] = $emails;
$nestedContacts['query']['bool']['should'][] = $phones;
// Sites Path
$sites['nested'] = [
'path' => "sites",
'inner_hits' => $highlights
];
$sites['query']['bool']['should'][] = $queryOperators;
$sites['query']['bool']['should'][] = $nestedContacts;
// Contacts Path
$contacts['nested'] = $nestedContacts;
$contacts['nested']['path'] = 'contacts';
// Base Path
$this->result['body']['query']['bool']['should'][] = $queryOperators;
$this->result['body']['query']['bool']['should'][] = $sites;
$this->result['body']['query']['bool']['should'][] = $contacts;
$this->result['body']['highlights'] = $highlights;
return true;
}
/**
* Add all the restriction to the 'query' part of the ElasticSearch Query - Version 2
*
* @param mixed $actualObject
* @return array
*/
private function constructOperators(mixed $actualObject): array | bool
{
$linkedRules = [];
foreach ($actualObject as $rule) {
// Construct the rule
$parsedRule = $this->constructQueryString($rule);
if ($parsedRule === false) {
// Wildcard Error
return false;
}
// Assign the rule to its operator
if ($rule['operator'] === null) {
// Simple Search
$operator = 'must';
} else {
// Operator Search
$operator = $this->operatorTrad[$rule['operator']];
}
if (is_array($linkedRules['bool'][$operator])) {
$linkedRules['bool'][$operator][] = $parsedRule;
} else {
$linkedRules['bool'][$operator] = $parsedRule;
}
}
return $linkedRules;
}
/**
* Construct the Bool Part (with Query String) of the query
*
* @param mixed $rule
* @return array|bool
*/
private function constructQueryString(mixed $rule): array | bool
{
$parsedRule = [];
// Field Search (One / Multi)
if (isset($rule['field'])) {
$keyword = "";
// Adding Keyword
if ($rule['isKeyword'] === true) {
$keyword = ".keyword";
}
// Adding Fields
if (!is_array($rule['field'])) {
$rule['field'] = [$rule['field']];
}
foreach ($rule['field'] as $field)
$parsedRule['query_string']['fields'][] = "*".$field.$keyword;
} else {
$parsedRule['query_string']['fields'] = ["*"];
}
// Protect search with only wildcard
$counter = 0;
foreach(explode(" ", $rule['values'][0]) as $word) {
$counter += substr_count($word, '*');
$counter += substr_count($word, '?');
if ($counter == strlen($word)) {
return false;
}
}
// Simple Search (Word / Full Quote)
$parsedRule['query_string']['query'] = $rule['values'][0];
foreach (['(', ')', '~', '^', '"'] as $toEscape) {
$parsedRule['query_string']['query'] = str_replace($toEscape, "\\" . $toEscape, $parsedRule['query_string']['query']);
error_log($parsedRule['query_string']['query']);
}
return $parsedRule;
}
/**
* Add a term to the list of restrictions
*
* @param array $toAdd
* @param array $rule
* @return array
*/
private function addTerms(array $toAdd, array $rule): array
{
foreach ($rule['values'] as $value) {
$termSet = false;
$counter = 0;
foreach ((is_array($toAdd) ? $toAdd : []) as $terms) {
// toAdd[];
foreach ((is_array($terms) ? $terms : []) as $term) {
// $toAdd[][];
if (!$termSet && !isset($term[$rule['field']])) {
// $toAdd[]['term']
$toAdd[$counter]['term'][$rule['field']] = $value;
$termSet = true;
}
$counter += 1;
}
}
if (!$termSet) {
$toAdd[]['term'][$rule['field']] = $value;
}
}
return $toAdd;
}
/**
* Add all the 'Highlight' part in the search query
*
* @return void
*/
private function constructHighlight(): void {
// Not nested results
$this->result['body']['highlight'] = [
"pre_tags" => ['<span class="highlighted">'],
"post_tags" => ["</span>"],
"order" => "score",
"fields" => [
"*" => [
"fragment_size" => 12,
"number_of_fragments" => 3,
"fragmenter" => "span"
]
]
];
}
}
////////////////////// V3
class ElasticParserV3
{
private mixed $data;
private mixed $result;
private mixed $config;
private array $operatorTrad = [
"OR" => 'should',
"XOR" => 'should',
"AND" => 'must',
"NOT" => 'must_not',
];
private array $highlights = [
"highlight" => [
"pre_tags" => [''],
"post_tags" => [''],
"order" => "score",
"fields" => [
"*" => [
'fragment_size' => 1,
'number_of_fragments' => 3,
'fragmenter' => 'span'
]
]
]
];
// This is the data architecture. You need to change it as the same as the mapping of your ES Index
private array $toConstruct = [
"part1" => [
"part1.part11" => [
"part1.part11.part111" => null,
"part1.part11.part112" => null
]
],
"part2" => [
"part2.part21" => null,
"part2.part22" => null
]
];
/**
* Do a parsing from a Front-type JSON to a ElasticSearch-type JSON Query
*
* @param array $data
* @param array $config
*/
public function __construct(array $data, array $config)
{
// Construct the data + config
$this->data = $data;
$this->config = $config;
$this->data['params']['index'] = $this->config["elastic"]['ELASTIC_MAPPING']['index'];
}
/**
* Get Data Array
*
* @return mixed
*/
public function getData(): mixed
{
return $this->data;
}
/**
* Get Config Array
*
* @return mixed
*/
public function getConfig(): mixed
{
return $this->config;
}
/**
* Return the result of the Parser
*
* @return mixed
*/
public function getResult(): mixed
{
return $this->result;
}
/**
* Parse all the data into a
*
* @return bool
*/
public function parseData(): bool
{
// Parse every data
if (!$this->transformData()) {
// Only Wildcard Error
return false;
}
return true;
}
/**
* Transform data into readable JSON for ElasticSearch
*
* @return bool
*/
public function transformData(): bool
{
// Params
$this->constructParams();
//// Search construction
return $this->constructBody();
}
/**
* Construct the 'params' part of the ElasticSearch Query
*
* @return void
*/
public function constructParams(): void
{
$this->result['index'] = $this->data['params']['index'];
$this->result['size'] = $this->data['params']['size'] ?? $this->config['elastic']['ELASTIC_SIZE'];
// Offset by the number of items 'per page' using size
if (isset($this->data['params']['from']) && $this->data['params']['from'] != 0)
$this->result['from'] = isset($this->data['params']['from']) ?
$this->data['params']['from'] * $this->result['size'] :
0;
if (isset($this->data['query']['rules'])) {
// Add the body and query part
$this->result['body']['query'] = [];
}
}
/**
* Construct the 'query' part of the ElasticSearch Query
*
* @return bool
*/
public function constructBody(): bool
{
//Geo case
if (isset($this->data['query']['geo'])) {
$this->result['body']['sort'][] = [
"_geo_distance" => [
"pin.location" => isset($this->data['query']['geo']) ?
[$this->data['query']['geo']['longitude'] ?? 0, $this->data['query']['geo']['latitude'] ?? 0] :
[0, 0],
"order" => $this->data['query']['geo']['order'] ?? "asc",
"distance" => $this->data['query']['geo']['maxDistanceKm'] ?? 20,
"unit" => "km",
"mode" => "min",
"distance_type" => "arc",
"ignore_unmapped"=> true
]
];
}
// build the 'query' part of the request
if (isset($this->data['query']['rules'])) {
return $this->constructNestedQuery($this->data['query']['rules']);
}
return true;
}
/**
* Build of the query part
*
* @param array $rules
* @return bool
*/
public function constructNestedQuery(array $rules): bool
{
$queryOperators = $this->constructOperators($rules);
if ($queryOperators === false) {
// Wildcard Error
return false;
}
$this->result['body'] = $this->recursQueryConstruct($this->toConstruct, 'body', $queryOperators)['body'];
return true;
}
/**
* Auto Construct Query
*
* @param array $path
* @param string $type
* @param array $queryOperators
* @return array
*/
public function recursQueryConstruct(array $path, string $type, array $queryOperators): array
{
$query = [];
$toAdd = [];
$toAdd[] = $queryOperators;
foreach ($path as $key => $value) {
if ($value !== null) {
// Nested Path
$temp = $this->recursQueryConstruct($value, 'nested', $queryOperators);
$temp['nested']['path'] = $key;
$temp['nested']['inner_hits'] = $this->highlights;
if (!empty($queryOperators)) {
$toAdd[] = $temp;
}
} else {
if (!empty($queryOperators)) {
$toAdd[]['nested'] = [
'path' => $key,
'query' => $queryOperators,
'inner_hits' => $this->highlights
];
}
}