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<?php |
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/** |
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* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2015 Daniel Popiniuc |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a copy |
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* of this software and associated documentation files (the "Software"), to deal |
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* in the Software without restriction, including without limitation the rights |
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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* copies of the Software, and to permit persons to whom the Software is |
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* furnished to do so, subject to the following conditions: |
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* |
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* The above copyright notice and this permission notice shall be included in all |
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* copies or substantial portions of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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* |
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*/ |
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namespace danielgp\common_lib; |
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/** |
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* useful functions to get quick results |
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* |
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* @author Daniel Popiniuc |
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*/ |
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trait MySQLiByDanieGPtables |
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{ |
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use MySQLiByDanielGPstructures; |
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/** |
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* Returns an array with fields referenced by a Foreign key |
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* |
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* @param string $database |
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* @param string $tblName |
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* @param string|array $oCol Only column(s) considered |
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* @return array |
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*/ |
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private function getForeignKeysToArray($database, $tblName, $oCol = '') |
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{ |
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if (!isset($this->advCache['tableFKs'][$database][$tblName])) { |
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$this->setTableForeignKeyCache($database, $this->fixTableSource($tblName)); |
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} |
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$aRt = []; |
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if (isset($this->advCache['tableFKs'][$database][$tblName])) { |
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$cnm = ['COLUMN_NAME', 'full_array_key_numbered', 'REFERENCED_TABLE_SCHEMA', 'REFERENCED_TABLE_NAME']; |
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foreach ($this->advCache['tableFKs'][$database][$tblName] as $val) { |
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if ($val[$cnm[0]] == $oCol) { |
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$vlQ = array_merge($val, ['LIMIT' => 2]); |
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$tFd = $this->setMySQLquery2Server($this->getForeignKeysQuery($vlQ), $cnm[1])['result']; |
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$tgtFld = '`' . ($tFd[0][$cnm[0]] == $val[$cnm[0]] ? $tFd[1][$cnm[0]] : $tFd[0][$cnm[0]]) . '`'; |
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$aRt[$oCol] = [$this->glueDbTb($val[$cnm[2]], $val[$cnm[3]]), $val[$cnm[2]], $tgtFld]; |
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} |
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} |
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} |
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return $aRt; |
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} |
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/** |
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* create a Cache for given table to use it in many places |
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* |
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* @param string $tblSrc |
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*/ |
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protected function setTableCache($tblSrc) |
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{ |
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$dat = $this->establishDatabaseAndTable($tblSrc); |
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if (!isset($this->advCache['tableStructureCache'][$dat[0]][$dat[1]])) { |
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$this->advCache['workingDatabase'] = $dat[0]; |
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$this->advCache['tableStructureCache'][$dat[0]][$dat[1]] = $this->getMySQLlistColumns([ |
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'TABLE_SCHEMA' => $dat[0], |
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'TABLE_NAME' => $dat[1], |
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]); |
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$this->setTableForeignKeyCache($dat[0], $dat[1]); |
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} |
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} |
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/** |
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* |
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* @param string $dbName |
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* @param string $tblName |
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*/ |
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private function setTableForeignKeyCache($dbName, $tblName) |
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{ |
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$frgnKs = $this->getMySQLlistIndexes([ |
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'TABLE_SCHEMA' => $dbName, |
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'TABLE_NAME' => $tblName, |
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'REFERENCED_TABLE_NAME' => 'NOT NULL', |
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]); |
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if (is_array($frgnKs)) { |
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$this->advCache['tableFKs'][$dbName][$tblName] = $frgnKs; |
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$this->advCache['FKcol'][$dbName][$tblName] = array_column($frgnKs, 'COLUMN_NAME', 'CONSTRAINT_NAME'); |
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} |
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} |
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} |
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danielgp /
common-lib
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