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1 | <?php |
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2 | |||
3 | /** |
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4 | * (c) Kitodo. Key to digital objects e.V. <[email protected]> |
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5 | * |
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6 | * This file is part of the Kitodo and TYPO3 projects. |
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7 | * |
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8 | * @license GNU General Public License version 3 or later. |
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9 | * For the full copyright and license information, please read the |
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10 | * LICENSE.txt file that was distributed with this source code. |
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11 | */ |
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12 | |||
13 | namespace Kitodo\Dlf\Common\Solr; |
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14 | |||
15 | use Kitodo\Dlf\Common\Helper; |
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16 | use Psr\Log\LoggerAwareInterface; |
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17 | use Psr\Log\LoggerAwareTrait; |
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18 | use Solarium\Client; |
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19 | use Solarium\Core\Client\Adapter\Http; |
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20 | use Solarium\QueryType\Server\CoreAdmin\Result\StatusResult; |
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21 | use TYPO3\CMS\Core\Cache\CacheManager; |
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22 | use TYPO3\CMS\Core\Configuration\ExtensionConfiguration; |
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23 | use TYPO3\CMS\Core\Database\ConnectionPool; |
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24 | use TYPO3\CMS\Core\EventDispatcher\EventDispatcher; |
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25 | use TYPO3\CMS\Core\Utility\GeneralUtility; |
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26 | use TYPO3\CMS\Core\Utility\MathUtility; |
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27 | |||
28 | /** |
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29 | * Solr class for the 'dlf' extension |
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30 | * |
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31 | * @package TYPO3 |
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32 | * @subpackage dlf |
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33 | * |
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34 | * @access public |
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35 | * |
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36 | * @property array $config this holds the Solr configuration |
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37 | * @property-read string|null $core this holds the core name for the current instance |
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38 | * @property-write int $configPid this holds the PID for the configuration |
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39 | * @property int $limit this holds the max results |
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40 | * @property-read int $numberOfHits this holds the number of hits for last search |
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41 | * @property-write array $params this holds the additional query parameters |
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42 | * @property-read bool $ready flag if the Solr service is instantiated successfully |
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43 | * @property-read Client $service this holds the Solr service object |
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44 | */ |
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45 | class Solr implements LoggerAwareInterface |
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46 | { |
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47 | use LoggerAwareTrait; |
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48 | |||
49 | /** |
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50 | * @access protected |
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51 | * @var array This holds the Solr configuration |
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52 | */ |
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53 | protected array $config = []; |
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54 | |||
55 | /** |
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56 | * @access protected |
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57 | * @var string|null This holds the core name |
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58 | */ |
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59 | protected ?string $core = null; |
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60 | |||
61 | /** |
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62 | * @access protected |
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63 | * @var int This holds the PID for the configuration |
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64 | */ |
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65 | protected int $configPid = 0; |
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66 | |||
67 | /** |
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68 | * @access public |
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69 | * @static |
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70 | * @var string The extension key |
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71 | */ |
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72 | public static string $extKey = 'dlf'; |
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73 | |||
74 | /** |
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75 | * @access public |
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76 | * @static |
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77 | * @var array The fields for SOLR index |
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78 | */ |
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79 | public static array $fields = []; |
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80 | |||
81 | /** |
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82 | * @access protected |
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83 | * @var int This holds the max results |
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84 | */ |
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85 | protected int $limit = 50000; |
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86 | |||
87 | /** |
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88 | * @access protected |
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89 | * @var int This holds the number of hits for last search |
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90 | */ |
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91 | protected int $numberOfHits = 0; |
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92 | |||
93 | /** |
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94 | * @access protected |
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95 | * @var array This holds the additional query parameters |
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96 | */ |
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97 | protected array $params = []; |
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98 | |||
99 | /** |
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100 | * @access protected |
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101 | * @var bool Is the search instantiated successfully? |
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102 | */ |
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103 | protected bool $ready = false; |
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104 | |||
105 | /** |
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106 | * @access protected |
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107 | * @var array(Solr) This holds the singleton search objects with their core as array key |
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108 | */ |
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109 | protected static array $registry = []; |
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110 | |||
111 | /** |
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112 | * @access protected |
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113 | * @var Client This holds the Solr service object |
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114 | */ |
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115 | protected Client $service; |
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116 | |||
117 | /** |
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118 | * Add a new core to Apache Solr |
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119 | * |
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120 | * @access public |
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121 | * |
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122 | * @param string $core The name of the new core. If empty, the next available core name is used. |
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123 | * |
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124 | * @return string The name of the new core |
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125 | */ |
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126 | public static function createCore($core = ''): string |
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127 | { |
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128 | // Get next available core name if none given. |
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129 | if (empty($core)) { |
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130 | $core = 'dlfCore' . self::getNextCoreNumber(); |
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131 | } |
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132 | // Get Solr service instance. |
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133 | $solr = self::getInstance($core); |
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134 | // Create new core if core with given name doesn't exist. |
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135 | if ($solr->ready) { |
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136 | // Core already exists. |
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137 | return $core; |
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138 | } else { |
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139 | // Core doesn't exist yet. |
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140 | $solrAdmin = self::getInstance(); |
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141 | if ($solrAdmin->ready) { |
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142 | $query = $solrAdmin->service->createCoreAdmin(); |
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143 | $action = $query->createCreate(); |
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144 | $action->setConfigSet('dlf'); |
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145 | $action->setCore($core); |
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146 | $action->setDataDir('data'); |
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147 | $action->setInstanceDir($core); |
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148 | $query->setAction($action); |
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149 | try { |
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150 | $response = $solrAdmin->service->coreAdmin($query); |
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151 | if ($response->getWasSuccessful()) { |
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152 | // Core successfully created. |
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153 | return $core; |
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154 | } |
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155 | } catch (\Exception $e) { |
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156 | // Nothing to do here. |
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157 | } |
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158 | } else { |
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159 | Helper::log('Apache Solr not available', LOG_SEVERITY_ERROR); |
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160 | } |
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161 | } |
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162 | return ''; |
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163 | } |
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164 | |||
165 | /** |
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166 | * Escape special characters in a query string |
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167 | * |
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168 | * @access public |
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169 | * |
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170 | * @param string $query The query string |
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171 | * |
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172 | * @return string The escaped query string |
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173 | */ |
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174 | public static function escapeQuery(string $query): string |
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175 | { |
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176 | // Escape query by disallowing range and field operators |
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177 | // Permit operators: wildcard, boolean, fuzzy, proximity, boost, grouping |
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178 | // https://solr.apache.org/guide/solr/latest/query-guide/standard-query-parser.html |
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179 | return preg_replace('/(\{|}|\[|]|:|\/|\\\)/', '\\\$1', $query); |
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180 | } |
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181 | |||
182 | /** |
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183 | * Escape all special characters in a query string while retaining valid field queries |
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184 | * |
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185 | * @access public |
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186 | * |
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187 | * @param string $query The query string |
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188 | * @param int $pid The PID for the field configuration |
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189 | * |
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190 | * @return string The escaped query string |
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191 | */ |
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192 | public static function escapeQueryKeepField(string $query, int $pid): string |
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193 | { |
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194 | // Is there a field query? |
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195 | if (preg_match('/^[[:alnum:]]+_[tu][su]i:\(?.*\)?$/', $query)) { |
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196 | $queryBuilder = GeneralUtility::makeInstance(ConnectionPool::class) |
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197 | ->getQueryBuilderForTable('tx_dlf_metadata'); |
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198 | |||
199 | // Get all indexed fields. |
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200 | $fields = []; |
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201 | $result = $queryBuilder |
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202 | ->select( |
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203 | 'tx_dlf_metadata.index_name AS index_name', |
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204 | 'tx_dlf_metadata.index_tokenized AS index_tokenized', |
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205 | 'tx_dlf_metadata.index_stored AS index_stored' |
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206 | ) |
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207 | ->from('tx_dlf_metadata') |
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208 | ->where( |
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209 | $queryBuilder->expr()->eq('tx_dlf_metadata.index_indexed', 1), |
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210 | $queryBuilder->expr()->eq('tx_dlf_metadata.pid', (int) $pid), |
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211 | $queryBuilder->expr()->orX( |
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212 | $queryBuilder->expr()->in('tx_dlf_metadata.sys_language_uid', [-1, 0]), |
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213 | $queryBuilder->expr()->eq('tx_dlf_metadata.l18n_parent', 0) |
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214 | ), |
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215 | Helper::whereExpression('tx_dlf_metadata') |
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216 | ) |
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217 | ->execute(); |
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218 | |||
219 | while ($resArray = $result->fetchAssociative()) { |
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220 | $fields[] = $resArray['index_name'] . '_' . ($resArray['index_tokenized'] ? 't' : 'u') . ($resArray['index_stored'] ? 's' : 'u') . 'i'; |
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221 | } |
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222 | |||
223 | // Check if queried field is valid. |
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224 | $splitQuery = explode(':', $query, 2); |
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225 | if (in_array($splitQuery[0], $fields)) { |
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226 | $query = $splitQuery[0] . ':(' . self::escapeQuery(trim($splitQuery[1], '()')) . ')'; |
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227 | } else { |
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228 | $query = self::escapeQuery($query); |
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229 | } |
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230 | } else { |
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231 | $query = self::escapeQuery($query); |
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232 | } |
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233 | return $query; |
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234 | } |
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235 | |||
236 | /** |
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237 | * Get fields for index. |
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238 | * |
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239 | * @access public |
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240 | * |
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241 | * @return array fields |
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242 | */ |
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243 | public static function getFields(): array |
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244 | { |
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245 | if (empty(self::$fields)) { |
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246 | $conf = GeneralUtility::makeInstance(ExtensionConfiguration::class)->get(self::$extKey, 'solr'); |
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247 | $solrFields = $conf['fields']; |
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248 | self::$fields['id'] = $solrFields['id']; |
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249 | self::$fields['uid'] = $solrFields['uid']; |
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250 | self::$fields['pid'] = $solrFields['pid']; |
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251 | self::$fields['page'] = $solrFields['page']; |
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252 | self::$fields['partof'] = $solrFields['partof']; |
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253 | self::$fields['root'] = $solrFields['root']; |
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254 | self::$fields['sid'] = $solrFields['sid']; |
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255 | self::$fields['toplevel'] = $solrFields['toplevel']; |
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256 | self::$fields['type'] = $solrFields['type']; |
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257 | self::$fields['title'] = $solrFields['title']; |
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258 | self::$fields['volume'] = $solrFields['volume']; |
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259 | self::$fields['date'] = $solrFields['date']; |
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260 | self::$fields['thumbnail'] = $solrFields['thumbnail']; |
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261 | self::$fields['default'] = $solrFields['default']; |
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262 | self::$fields['timestamp'] = $solrFields['timestamp']; |
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263 | self::$fields['autocomplete'] = $solrFields['autocomplete']; |
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264 | self::$fields['fulltext'] = $solrFields['fulltext']; |
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265 | self::$fields['record_id'] = $solrFields['recordId']; |
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266 | self::$fields['purl'] = $solrFields['purl']; |
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267 | self::$fields['urn'] = $solrFields['urn']; |
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268 | self::$fields['location'] = $solrFields['location']; |
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269 | self::$fields['collection'] = $solrFields['collection']; |
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270 | self::$fields['license'] = $solrFields['license']; |
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271 | self::$fields['terms'] = $solrFields['terms']; |
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272 | self::$fields['restrictions'] = $solrFields['restrictions']; |
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273 | self::$fields['geom'] = $solrFields['geom']; |
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274 | } |
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275 | |||
276 | return self::$fields; |
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277 | } |
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278 | |||
279 | /** |
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280 | * This is a singleton class, thus instances must be created by this method |
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281 | * |
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282 | * @access public |
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283 | * |
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284 | * @param mixed $core Name or UID of the core to load or null to get core admin endpoint |
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285 | * |
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286 | * @return Solr Instance of this class |
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287 | */ |
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288 | public static function getInstance($core = null): Solr |
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289 | { |
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290 | // Get core name if UID is given. |
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291 | if (MathUtility::canBeInterpretedAsInteger($core)) { |
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292 | $core = Helper::getIndexNameFromUid($core, 'tx_dlf_solrcores'); |
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293 | } |
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294 | // Check if core is set or null. |
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295 | if ( |
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296 | empty($core) |
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297 | && $core !== null |
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298 | ) { |
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299 | Helper::log('Invalid core UID or name given for Apache Solr', LOG_SEVERITY_ERROR); |
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300 | } |
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301 | if (!empty($core)) { |
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302 | // Check if there is an instance in the registry already. |
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303 | if ( |
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304 | is_object(self::$registry[$core]) |
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305 | && self::$registry[$core] instanceof self |
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306 | ) { |
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307 | // Return singleton instance if available. |
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308 | return self::$registry[$core]; |
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309 | } |
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310 | } |
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311 | // Create new instance... |
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312 | $instance = new self($core); |
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313 | // ...and save it to registry. |
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314 | if (!empty($instance->core)) { |
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315 | self::$registry[$instance->core] = $instance; |
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316 | } |
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317 | return $instance; |
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318 | } |
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319 | |||
320 | /** |
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321 | * Get next unused Solr core number |
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322 | * |
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323 | * @access public |
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324 | * |
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325 | * @param int $number Number to start with |
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326 | * |
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327 | * @return int First unused core number found |
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328 | */ |
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329 | public static function getNextCoreNumber(int $number = 0): int |
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330 | { |
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331 | $number = max($number, 0); |
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332 | // Check if core already exists. |
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333 | $solr = self::getInstance('dlfCore' . $number); |
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334 | if (!$solr->ready) { |
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335 | return $number; |
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336 | } else { |
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337 | return self::getNextCoreNumber($number + 1); |
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338 | } |
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339 | } |
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340 | |||
341 | /** |
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342 | * Sets the connection information for Solr |
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343 | * |
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344 | * @access protected |
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345 | * |
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346 | * @return void |
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347 | */ |
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348 | protected function loadSolrConnectionInfo(): void |
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349 | { |
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350 | if (empty($this->config)) { |
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351 | $config = []; |
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352 | // Extract extension configuration. |
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353 | $conf = GeneralUtility::makeInstance(ExtensionConfiguration::class)->get(self::$extKey, 'solr'); |
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354 | // Derive Solr scheme |
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355 | $config['scheme'] = empty($conf['https']) ? 'http' : 'https'; |
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356 | // Derive Solr host name. |
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357 | $config['host'] = ($conf['host'] ? $conf['host'] : '127.0.0.1'); |
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358 | // Set username and password. |
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359 | $config['username'] = $conf['user']; |
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360 | $config['password'] = $conf['pass']; |
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361 | // Set port if not set. |
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362 | $config['port'] = MathUtility::forceIntegerInRange($conf['port'], 1, 65535, 8983); |
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363 | // Trim path of slashes and (re-)add trailing slash if path not empty. |
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364 | $config['path'] = trim($conf['path'], '/'); |
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365 | if (!empty($config['path'])) { |
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366 | $config['path'] .= '/'; |
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367 | } |
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368 | |||
369 | // Set connection timeout lower than PHP's max_execution_time. |
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370 | $maxExecutionTime = (int) ini_get('max_execution_time') ? : 30; |
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371 | $config['timeout'] = MathUtility::forceIntegerInRange($conf['timeout'], 1, $maxExecutionTime, 10); |
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372 | $this->config = $config; |
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373 | } |
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374 | } |
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375 | |||
376 | /** |
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377 | * Processes a search request and returns the raw Apache Solr Documents. |
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378 | * |
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379 | * @access public |
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380 | * |
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381 | * @param array $parameters Additional search parameters |
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382 | * |
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383 | * @return array The Apache Solr Documents that were fetched |
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384 | */ |
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385 | public function searchRaw(array $parameters = []): array |
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386 | { |
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387 | // Set additional query parameters. |
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388 | $parameters['start'] = 0; |
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389 | $parameters['rows'] = $this->limit; |
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390 | // Calculate cache identifier. |
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391 | $cacheIdentifier = Helper::digest($this->core . print_r(array_merge($this->params, $parameters), true)); |
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392 | $cache = GeneralUtility::makeInstance(CacheManager::class)->getCache('tx_dlf_solr'); |
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393 | $resultSet = []; |
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394 | $entry = $cache->get($cacheIdentifier); |
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395 | if ($entry === false) { |
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396 | $selectQuery = $this->service->createSelect(array_merge($this->params, $parameters)); |
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397 | $result = $this->service->select($selectQuery); |
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398 | foreach ($result as $doc) { |
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399 | $resultSet[] = $doc; |
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400 | } |
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401 | // Save value in cache. |
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402 | $cache->set($cacheIdentifier, $resultSet); |
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403 | } else { |
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404 | // Return cache hit. |
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405 | $resultSet = $entry; |
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406 | } |
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407 | return $resultSet; |
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408 | } |
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409 | |||
410 | /** |
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411 | * This returns $this->core via __get() |
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412 | * |
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413 | * @access protected |
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414 | * |
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415 | * @return string|null The core name of the current query endpoint or null if core admin endpoint |
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416 | */ |
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417 | protected function magicGetCore(): ?string |
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418 | { |
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419 | return $this->core; |
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420 | } |
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421 | |||
422 | /** |
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423 | * This returns $this->limit via __get() |
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424 | * |
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425 | * @access protected |
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426 | * |
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427 | * @return int The max number of results |
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428 | */ |
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429 | protected function magicGetLimit(): int |
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430 | { |
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431 | return $this->limit; |
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432 | } |
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433 | |||
434 | /** |
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435 | * This returns $this->numberOfHits via __get() |
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436 | * |
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437 | * @access protected |
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438 | * |
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439 | * @return int Total number of hits for last search |
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440 | */ |
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441 | protected function magicGetNumberOfHits(): int |
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442 | { |
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443 | return $this->numberOfHits; |
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444 | } |
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445 | |||
446 | /** |
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447 | * This returns $this->ready via __get() |
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448 | * |
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449 | * @access protected |
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450 | * |
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451 | * @return bool Is the search instantiated successfully? |
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452 | */ |
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453 | protected function magicGetReady(): bool |
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454 | { |
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455 | return $this->ready; |
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456 | } |
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457 | |||
458 | /** |
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459 | * This returns $this->service via __get() |
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460 | * |
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461 | * @access protected |
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462 | * |
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463 | * @return Client Apache Solr service object |
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464 | */ |
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465 | protected function magicGetService(): Client |
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466 | { |
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467 | return $this->service; |
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468 | } |
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469 | |||
470 | /** |
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471 | * This sets $this->configPid via __set() |
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472 | * |
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473 | * @access protected |
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474 | * |
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475 | * @param int $value The new PID for the metadata definitions |
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476 | * |
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477 | * @return void |
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478 | */ |
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479 | protected function magicSetConfigPid(int $value): void |
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480 | { |
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481 | $this->configPid = max($value, 0); |
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482 | } |
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483 | |||
484 | /** |
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485 | * This sets $this->limit via __set() |
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486 | * |
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487 | * @access protected |
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488 | * |
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489 | * @param int $value The max number of results |
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490 | * |
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491 | * @return void |
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492 | */ |
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493 | protected function magicSetLimit(int $value): void |
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494 | { |
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495 | $this->limit = max($value, 0); |
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496 | } |
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497 | |||
498 | /** |
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499 | * This sets $this->params via __set() |
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500 | * |
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501 | * @access protected |
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502 | * |
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503 | * @param array $value The query parameters |
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504 | * |
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505 | * @return void |
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506 | */ |
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507 | protected function magicSetParams(array $value): void |
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508 | { |
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509 | $this->params = $value; |
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510 | } |
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511 | |||
512 | /** |
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513 | * This magic method is called each time an invisible property is referenced from the object |
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514 | * |
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515 | * @access public |
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516 | * |
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517 | * @param string $var Name of variable to get |
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518 | * |
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519 | * @return mixed Value of $this->$var |
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520 | */ |
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521 | public function __get(string $var) |
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522 | { |
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523 | $method = 'magicGet' . ucfirst($var); |
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524 | if ( |
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525 | !property_exists($this, $var) |
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526 | || !method_exists($this, $method) |
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527 | ) { |
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528 | $this->logger->warning('There is no getter function for property "' . $var . '"'); |
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529 | return null; |
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530 | } else { |
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531 | return $this->$method(); |
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532 | } |
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533 | } |
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534 | |||
535 | /** |
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536 | * This magic method is called each time an invisible property is checked for isset() or empty() |
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537 | * |
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538 | * @access public |
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539 | * |
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540 | * @param string $var Name of variable to check |
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541 | * |
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542 | * @return bool true if variable is set and not empty, false otherwise |
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543 | */ |
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544 | public function __isset(string $var): bool |
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545 | { |
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546 | return !empty($this->__get($var)); |
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547 | } |
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548 | |||
549 | /** |
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550 | * This magic method is called each time an invisible property is referenced from the object |
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551 | * |
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552 | * @access public |
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553 | * |
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554 | * @param string $var Name of variable to set |
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555 | * @param mixed $value New value of variable |
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556 | * |
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557 | * @return void |
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558 | */ |
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559 | public function __set(string $var, $value): void |
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560 | { |
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561 | $method = 'magicSet' . ucfirst($var); |
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562 | if ( |
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563 | !property_exists($this, $var) |
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564 | || !method_exists($this, $method) |
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565 | ) { |
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566 | $this->logger->warning('There is no setter function for property "' . $var . '"'); |
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567 | } else { |
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568 | $this->$method($value); |
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569 | } |
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570 | } |
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571 | |||
572 | /** |
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573 | * This is a singleton class, thus the constructor should be private/protected |
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574 | * |
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575 | * @access protected |
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576 | * |
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577 | * @param string|null $core The name of the core to use or null for core admin endpoint |
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578 | * |
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579 | * @return void |
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580 | */ |
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581 | protected function __construct(?string $core) |
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582 | { |
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583 | // Solarium requires different code for version 5 and 6. |
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584 | $isSolarium5 = Client::checkExact('5'); |
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585 | // Get Solr connection parameters from configuration. |
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586 | $this->loadSolrConnectionInfo(); |
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587 | // Configure connection adapter. |
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588 | $adapter = GeneralUtility::makeInstance(Http::class); |
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589 | $adapter->setTimeout($this->config['timeout']); |
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590 | // Configure event dispatcher. |
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591 | if ($isSolarium5) { |
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592 | $eventDispatcher = null; |
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593 | } else { |
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594 | // When updating to TYPO3 >=10.x and Solarium >=6.x |
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595 | // we have to provide an PSR-14 Event Dispatcher instead of |
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596 | // "null". |
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597 | $eventDispatcher = GeneralUtility::makeInstance(EventDispatcher::class); |
||
598 | } |
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599 | // Configure endpoint. |
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600 | $config = [ |
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601 | 'endpoint' => [ |
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602 | 'default' => [ |
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603 | 'scheme' => $this->config['scheme'], |
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604 | 'host' => $this->config['host'], |
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605 | 'port' => $this->config['port'], |
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606 | 'path' => '/' . $this->config['path'], |
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607 | 'core' => $core, |
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608 | 'username' => $this->config['username'], |
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609 | 'password' => $this->config['password'] |
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610 | ] |
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611 | ] |
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612 | ]; |
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613 | // Instantiate Solarium\Client class. |
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614 | if ($isSolarium5) { |
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615 | $this->service = GeneralUtility::makeInstance(Client::class, $config); |
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616 | } else { |
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617 | // When updating to TYPO3 >=10.x and Solarium >=6.x |
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618 | // $adapter and $eventDispatcher are mandatory arguments |
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619 | // of the \Solarium\Client constructor. |
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620 | $this->service = GeneralUtility::makeInstance(Client::class, $adapter, $eventDispatcher, $config); |
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621 | } |
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622 | $this->service->setAdapter($adapter); |
||
623 | // Check if connection is established. |
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624 | $query = $this->service->createCoreAdmin(); |
||
625 | $action = $query->createStatus(); |
||
626 | if ($core !== null) { |
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627 | $action->setCore($core); |
||
628 | } |
||
629 | $query->setAction($action); |
||
630 | try { |
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631 | $response = $this->service->coreAdmin($query); |
||
632 | if ($response->getWasSuccessful()) { |
||
633 | // Solr is reachable, but is the core as well? |
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634 | if ($core !== null) { |
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635 | $result = $response->getStatusResult(); |
||
636 | if ( |
||
637 | $result instanceof StatusResult |
||
638 | && $result->getUptime() > 0 |
||
639 | ) { |
||
640 | // Set core name. |
||
641 | $this->core = $core; |
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642 | } else { |
||
643 | // Core not available. |
||
644 | return; |
||
645 | } |
||
646 | } |
||
647 | // Instantiation successful! |
||
648 | $this->ready = true; |
||
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649 | } |
||
650 | } catch (\Exception $e) { |
||
651 | // Nothing to do here. |
||
652 | } |
||
653 | } |
||
654 | } |
||
655 |