mirror of
https://github.com/Icinga/icingaweb2.git
synced 2025-05-09 01:00:11 +02:00
caca219aa1
Usually not required as there are no aliases for statements possible but since we cannot differentiate everywhere what type of column we're processing it is safer to always handle such. fixes #9553
904 lines
31 KiB
PHP
904 lines
31 KiB
PHP
<?php
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/* Icinga Web 2 | (c) 2013-2015 Icinga Development Team | GPLv2+ */
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namespace Icinga\Repository;
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use Icinga\Data\Db\DbConnection;
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use Icinga\Data\Extensible;
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use Icinga\Data\Filter\Filter;
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use Icinga\Data\Reducible;
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use Icinga\Data\Updatable;
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use Icinga\Exception\IcingaException;
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use Icinga\Exception\ProgrammingError;
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use Icinga\Exception\StatementException;
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use Icinga\Util\String;
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/**
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* Abstract base class for concrete database repository implementations
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*
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* Additionally provided features:
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* <ul>
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* <li>Support for table aliases</li>
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* <li>Automatic table prefix handling</li>
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* <li>Insert, update and delete capabilities</li>
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* <li>Differentiation between statement and query columns</li>
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* <li>Capability to join additional tables depending on the columns being selected or used in a filter</li>
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* </ul>
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*/
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abstract class DbRepository extends Repository implements Extensible, Updatable, Reducible
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{
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/**
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* The datasource being used
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*
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* @var DbConnection
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*/
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protected $ds;
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/**
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* The table aliases being applied
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*
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* This must be initialized by repositories which are going to make use of table aliases. Every table for which
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* aliased columns are provided must be defined in this array using its name as key and the alias being used as
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* value. Failure to do so will result in invalid queries.
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*
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* @var array
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*/
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protected $tableAliases;
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/**
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* The statement columns being provided
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*
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* This may be initialized by repositories which are going to make use of table aliases. It allows to provide
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* alias-less column names to be used for a statement. The array needs to be in the following format:
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* <pre><code>
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* array(
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* 'table_name' => array(
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* 'column1',
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* 'alias1' => 'column2',
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* 'alias2' => 'column3'
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* )
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* )
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* <pre><code>
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*
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* @var array
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*/
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protected $statementColumns;
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/**
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* An array to map table names to statement columns/aliases
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*
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* @var array
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*/
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protected $statementAliasTableMap;
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/**
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* A flattened array to map statement columns to aliases
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*
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* @var array
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*/
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protected $statementAliasColumnMap;
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/**
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* An array to map table names to statement columns
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*
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* @var array
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*/
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protected $statementColumnTableMap;
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/**
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* A flattened array to map aliases to statement columns
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*
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* @var array
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*/
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protected $statementColumnAliasMap;
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/**
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* List of columns where the COLLATE SQL-instruction has been removed
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*
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* This list is being populated in case of a PostgreSQL backend only,
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* to ensure case-insensitive string comparison in WHERE clauses.
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*
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* @var array
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*/
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protected $columnsWithoutCollation;
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/**
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* Create a new DB repository object
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*
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* In case $this->queryColumns has already been initialized, this initializes
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* $this->columnsWithoutCollation in case of a PostgreSQL connection.
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*
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* @param DbConnection $ds The datasource to use
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*/
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public function __construct(DbConnection $ds)
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{
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parent::__construct($ds);
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$this->columnsWithoutCollation = array();
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if ($ds->getDbType() === 'pgsql' && $this->queryColumns !== null) {
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$this->queryColumns = $this->removeCollateInstruction($this->queryColumns);
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}
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}
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/**
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* Return the query columns being provided
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*
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* Initializes $this->columnsWithoutCollation in case of a PostgreSQL connection.
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*
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* @return array
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*/
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public function getQueryColumns()
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{
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if ($this->queryColumns === null) {
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$this->queryColumns = parent::getQueryColumns();
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if ($this->ds->getDbType() === 'pgsql') {
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$this->queryColumns = $this->removeCollateInstruction($this->queryColumns);
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}
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}
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return $this->queryColumns;
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}
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/**
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* Return the table aliases to be applied
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*
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* Calls $this->initializeTableAliases() in case $this->tableAliases is null.
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*
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* @return array
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*/
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public function getTableAliases()
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{
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if ($this->tableAliases === null) {
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$this->tableAliases = $this->initializeTableAliases();
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}
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return $this->tableAliases;
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}
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/**
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* Overwrite this in your repository implementation in case you need to initialize the table aliases lazily
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*
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* @return array
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*/
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protected function initializeTableAliases()
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{
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return array();
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}
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/**
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* Remove each COLLATE SQL-instruction from all given query columns
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*
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* @param array $queryColumns
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*
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* @return array $queryColumns, the updated version
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*/
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protected function removeCollateInstruction($queryColumns)
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{
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foreach ($queryColumns as & $columns) {
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foreach ($columns as & $column) {
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$column = preg_replace('/ COLLATE .+$/', '', $column, -1, $count);
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if ($count > 0) {
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$this->columnsWithoutCollation[] = $column;
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}
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}
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}
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return $queryColumns;
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}
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/**
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* Return the given table with the datasource's prefix being prepended
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*
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* @param array|string $table
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*
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* @return array|string
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*
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* @throws IcingaException In case $table is not of a supported type
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*/
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protected function prependTablePrefix($table)
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{
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$prefix = $this->ds->getTablePrefix();
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if (! $prefix) {
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return $table;
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}
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if (is_array($table)) {
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foreach ($table as & $tableName) {
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if (strpos($tableName, $prefix) === false) {
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$tableName = $prefix . $tableName;
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}
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}
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} elseif (is_string($table)) {
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$table = (strpos($table, $prefix) === false ? $prefix : '') . $table;
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} else {
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throw new IcingaException('Table prefix handling for type "%s" is not supported', type($table));
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}
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return $table;
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}
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/**
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* Remove the datasource's prefix from the given table name and return the remaining part
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*
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* @param array|string $table
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*
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* @return array|string
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*
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* @throws IcingaException In case $table is not of a supported type
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*/
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protected function removeTablePrefix($table)
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{
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$prefix = $this->ds->getTablePrefix();
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if (! $prefix) {
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return $table;
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}
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if (is_array($table)) {
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foreach ($table as & $tableName) {
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if (strpos($tableName, $prefix) === 0) {
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$tableName = str_replace($prefix, '', $tableName);
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}
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}
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} elseif (is_string($table)) {
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if (strpos($table, $prefix) === 0) {
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$table = str_replace($prefix, '', $table);
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}
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} else {
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throw new IcingaException('Table prefix handling for type "%s" is not supported', type($table));
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}
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return $table;
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}
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/**
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* Return the given table with its alias being applied
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*
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* @param array|string $table
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*
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* @return array|string
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*/
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protected function applyTableAlias($table)
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{
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$tableAliases = $this->getTableAliases();
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if (is_array($table) || !isset($tableAliases[($nonPrefixedTable = $this->removeTablePrefix($table))])) {
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return $table;
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}
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return array($tableAliases[$nonPrefixedTable] => $table);
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}
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/**
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* Return the given table with its alias being cleared
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*
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* @param array|string $table
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*
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* @return string
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*
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* @throws IcingaException In case $table is not of a supported type
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*/
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protected function clearTableAlias($table)
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{
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if (is_string($table)) {
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return $table;
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}
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if (is_array($table)) {
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return reset($table);
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}
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throw new IcingaException('Table alias handling for type "%s" is not supported', type($table));
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}
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/**
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* Insert a table row with the given data
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*
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* @param string $table
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* @param array $bind
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*/
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public function insert($table, array $bind)
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{
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$this->ds->insert($this->prependTablePrefix($table), $this->requireStatementColumns($table, $bind));
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}
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/**
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* Update table rows with the given data, optionally limited by using a filter
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*
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* @param string $table
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* @param array $bind
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* @param Filter $filter
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*/
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public function update($table, array $bind, Filter $filter = null)
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{
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if ($filter) {
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$filter = $this->requireFilter($table, $filter);
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}
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$this->ds->update($this->prependTablePrefix($table), $this->requireStatementColumns($table, $bind), $filter);
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}
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/**
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* Delete table rows, optionally limited by using a filter
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*
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* @param string $table
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* @param Filter $filter
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*/
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public function delete($table, Filter $filter = null)
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{
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if ($filter) {
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$filter = $this->requireFilter($table, $filter);
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}
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$this->ds->delete($this->prependTablePrefix($table), $filter);
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}
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/**
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* Return the statement columns being provided
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*
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* Calls $this->initializeStatementColumns() in case $this->statementColumns is null.
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*
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* @return array
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*/
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public function getStatementColumns()
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{
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if ($this->statementColumns === null) {
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$this->statementColumns = $this->initializeStatementColumns();
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}
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return $this->statementColumns;
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}
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/**
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* Overwrite this in your repository implementation in case you need to initialize the statement columns lazily
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*
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* @return array
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*/
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protected function initializeStatementColumns()
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{
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return array();
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}
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/**
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* Return an array to map table names to statement columns/aliases
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*
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* @return array
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*/
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protected function getStatementAliasTableMap()
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{
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if ($this->statementAliasTableMap === null) {
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$this->initializeStatementMaps();
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}
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return $this->statementAliasTableMap;
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}
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/**
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* Return a flattened array to map statement columns to aliases
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*
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* @return array
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*/
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protected function getStatementAliasColumnMap()
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{
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if ($this->statementAliasColumnMap === null) {
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$this->initializeStatementMaps();
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}
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return $this->statementAliasColumnMap;
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}
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/**
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* Return an array to map table names to statement columns
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*
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* @return array
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*/
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protected function getStatementColumnTableMap()
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{
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if ($this->statementColumnTableMap === null) {
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$this->initializeStatementMaps();
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}
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return $this->statementColumnTableMap;
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}
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/**
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* Return a flattened array to map aliases to statement columns
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*
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* @return array
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*/
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protected function getStatementColumnAliasMap()
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{
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if ($this->statementColumnAliasMap === null) {
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$this->initializeStatementMaps();
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}
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return $this->statementColumnAliasMap;
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}
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/**
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* Initialize $this->statementAliasTableMap and $this->statementAliasColumnMap
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*/
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protected function initializeStatementMaps()
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{
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$this->statementAliasTableMap = array();
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$this->statementAliasColumnMap = array();
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$this->statementColumnTableMap = array();
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$this->statementColumnAliasMap = array();
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foreach ($this->getStatementColumns() as $table => $columns) {
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foreach ($columns as $alias => $column) {
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$key = is_string($alias) ? $alias : $column;
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if (array_key_exists($key, $this->statementAliasTableMap)) {
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if ($this->statementAliasTableMap[$key] !== null) {
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$existingTable = $this->statementAliasTableMap[$key];
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$existingColumn = $this->statementAliasColumnMap[$key];
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$this->statementAliasTableMap[$existingTable . '.' . $key] = $existingTable;
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$this->statementAliasColumnMap[$existingTable . '.' . $key] = $existingColumn;
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$this->statementAliasTableMap[$key] = null;
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$this->statementAliasColumnMap[$key] = null;
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}
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$this->statementAliasTableMap[$table . '.' . $key] = $table;
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$this->statementAliasColumnMap[$table . '.' . $key] = $column;
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} else {
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$this->statementAliasTableMap[$key] = $table;
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$this->statementAliasColumnMap[$key] = $column;
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}
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if (array_key_exists($column, $this->statementColumnTableMap)) {
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if ($this->statementColumnTableMap[$column] !== null) {
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$existingTable = $this->statementColumnTableMap[$column];
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$existingAlias = $this->statementColumnAliasMap[$column];
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$this->statementColumnTableMap[$existingTable . '.' . $column] = $existingTable;
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$this->statementColumnAliasMap[$existingTable . '.' . $column] = $existingAlias;
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$this->statementColumnTableMap[$column] = null;
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$this->statementColumnAliasMap[$column] = null;
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}
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$this->statementColumnTableMap[$table . '.' . $column] = $table;
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$this->statementColumnAliasMap[$table . '.' . $column] = $key;
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} else {
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$this->statementColumnTableMap[$column] = $table;
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$this->statementColumnAliasMap[$column] = $key;
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}
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}
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}
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}
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/**
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* Return whether this repository is capable of converting values for the given table and optional column
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*
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* This does not check whether any conversion for the given table is available if $column is not given, as it
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* may be possible that columns from another table where joined in which would otherwise not being converted.
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*
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* @param array|string $table
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* @param string $column
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*
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* @return bool
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*/
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public function providesValueConversion($table, $column = null)
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{
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if ($column !== null) {
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if ($this->validateQueryColumnAssociation($table, $column)) {
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return parent::providesValueConversion(
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$this->removeTablePrefix($this->clearTableAlias($table)),
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$column
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);
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}
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if (($tableName = $this->findTableName($column))) {
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return parent::providesValueConversion($tableName, $column);
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}
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return false;
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}
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$conversionRules = $this->getConversionRules();
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return !empty($conversionRules);
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}
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/**
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* Return the name of the conversion method for the given alias or column name and context
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*
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* If a query column or a filter column, which is part of a query filter, needs to be converted,
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* you'll need to pass $query, otherwise the column is considered a statement column.
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*
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* @param string $table The datasource's table
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* @param string $name The alias or column name for which to return a conversion method
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* @param string $context The context of the conversion: persist or retrieve
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* @param RepositoryQuery $query If given the column is considered a query column,
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* statement column otherwise
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*
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* @return string
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*
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* @throws ProgrammingError In case a conversion rule is found but not any conversion method
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*/
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protected function getConverter($table, $name, $context, RepositoryQuery $query = null)
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{
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if (
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($query !== null && $this->validateQueryColumnAssociation($table, $name))
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|| ($query === null && $this->validateStatementColumnAssociation($table, $name))
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) {
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$table = $this->removeTablePrefix($this->clearTableAlias($table));
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} else {
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$table = $this->findTableName($name);
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if (! $table) {
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throw new ProgrammingError('Column name validation seems to have failed. Did you require the column?');
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}
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}
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return parent::getConverter($table, $name, $context, $query);
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}
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/**
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* Validate that the requested table exists
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*
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* This will prepend the datasource's table prefix and will apply the table's alias, if any.
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*
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* @param string $table The table to validate
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* @param RepositoryQuery $query An optional query to pass as context
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* (unused by the base implementation)
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*
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* @return array|string
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*
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* @throws ProgrammingError In case the given table does not exist
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*/
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public function requireTable($table, RepositoryQuery $query = null)
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{
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$statementColumns = $this->getStatementColumns();
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if (! isset($statementColumns[$table])) {
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$table = parent::requireTable($table);
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}
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return $this->prependTablePrefix($this->applyTableAlias($table));
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}
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/**
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* Recurse the given filter, require each column for the given table and convert all values
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*
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* In case of a PostgreSQL connection, this applies LOWER() on the column and strtolower()
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* on the value if a COLLATE SQL-instruction is part of the resolved column.
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|
*
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* @param string $table The table being filtered
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* @param Filter $filter The filter to recurse
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* @param RepositoryQuery $query An optional query to pass as context
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* (Directly passed through to $this->requireFilterColumn)
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* @param bool $clone Whether to clone $filter first
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*
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* @return Filter The udpated filter
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*/
|
|
public function requireFilter($table, Filter $filter, RepositoryQuery $query = null, $clone = true)
|
|
{
|
|
$filter = parent::requireFilter($table, $filter, $query, $clone);
|
|
|
|
if ($filter->isExpression()) {
|
|
$column = $filter->getColumn();
|
|
if (in_array($column, $this->columnsWithoutCollation) && strpos($column, 'LOWER') !== 0) {
|
|
$filter->setColumn('LOWER(' . $column . ')');
|
|
$expression = $filter->getExpression();
|
|
if (is_array($expression)) {
|
|
$filter->setExpression(array_map('strtolower', $expression));
|
|
} else {
|
|
$filter->setExpression(strtolower($expression));
|
|
}
|
|
}
|
|
}
|
|
|
|
return $filter;
|
|
}
|
|
|
|
/**
|
|
* Return this repository's query columns of the given table mapped to their respective aliases
|
|
*
|
|
* @param array|string $table
|
|
*
|
|
* @return array
|
|
*
|
|
* @throws ProgrammingError In case $table does not exist
|
|
*/
|
|
public function requireAllQueryColumns($table)
|
|
{
|
|
return parent::requireAllQueryColumns($this->removeTablePrefix($this->clearTableAlias($table)));
|
|
}
|
|
|
|
/**
|
|
* Return the query column name for the given alias or null in case the alias does not exist
|
|
*
|
|
* @param array|string $table
|
|
* @param string $alias
|
|
*
|
|
* @return string|null
|
|
*/
|
|
public function resolveQueryColumnAlias($table, $alias)
|
|
{
|
|
return parent::resolveQueryColumnAlias($this->removeTablePrefix($this->clearTableAlias($table)), $alias);
|
|
}
|
|
|
|
/**
|
|
* Return the alias for the given query column name or null in case the query column name does not exist
|
|
*
|
|
* @param array|string $table
|
|
* @param string $column
|
|
*
|
|
* @return string|null
|
|
*/
|
|
public function reassembleQueryColumnAlias($table, $column)
|
|
{
|
|
$alias = parent::reassembleQueryColumnAlias($this->removeTablePrefix($this->clearTableAlias($table)), $column);
|
|
if (
|
|
$alias === null
|
|
&& !$this->validateQueryColumnAssociation($table, $column)
|
|
&& ($tableName = $this->findTableName($column))
|
|
) {
|
|
return parent::reassembleQueryColumnAlias($tableName, $column);
|
|
}
|
|
|
|
return $alias;
|
|
}
|
|
|
|
/**
|
|
* Return whether the given query column name or alias is available in the given table
|
|
*
|
|
* @param array|string $table
|
|
* @param string $column
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function validateQueryColumnAssociation($table, $column)
|
|
{
|
|
return parent::validateQueryColumnAssociation(
|
|
$this->removeTablePrefix($this->clearTableAlias($table)),
|
|
$column
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Validate that the given column is a valid query target and return it or the actual name if it's an alias
|
|
*
|
|
* Attempts to join the given column from a different table if its association to the given table cannot be
|
|
* verified.
|
|
*
|
|
* @param array|string $table The table where to look for the column or alias
|
|
* @param string $name The name or alias of the column to validate
|
|
* @param RepositoryQuery $query An optional query to pass as context,
|
|
* if not given no join will be attempted
|
|
*
|
|
* @return string The given column's name
|
|
*
|
|
* @throws QueryException In case the given column is not a valid query column
|
|
*/
|
|
public function requireQueryColumn($table, $name, RepositoryQuery $query = null)
|
|
{
|
|
if ($query === null || $this->validateQueryColumnAssociation($table, $name)) {
|
|
return parent::requireQueryColumn($this->removeTablePrefix($this->clearTableAlias($table)), $name, $query);
|
|
}
|
|
|
|
return $this->joinColumn($name, $table, $query);
|
|
}
|
|
|
|
/**
|
|
* Validate that the given column is a valid filter target and return it or the actual name if it's an alias
|
|
*
|
|
* Attempts to join the given column from a different table if its association to the given table cannot be
|
|
* verified.
|
|
*
|
|
* @param array|string $table The table where to look for the column or alias
|
|
* @param string $name The name or alias of the column to validate
|
|
* @param RepositoryQuery $query An optional query to pass as context,
|
|
* if not given the column is considered being used for a statement filter
|
|
*
|
|
* @return string The given column's name
|
|
*
|
|
* @throws QueryException In case the given column is not a valid filter column
|
|
*/
|
|
public function requireFilterColumn($table, $name, RepositoryQuery $query = null)
|
|
{
|
|
if ($query === null) {
|
|
return $this->requireStatementColumn($table, $name);
|
|
}
|
|
|
|
if ($this->validateQueryColumnAssociation($table, $name)) {
|
|
return parent::requireFilterColumn($this->removeTablePrefix($this->clearTableAlias($table)), $name, $query);
|
|
}
|
|
|
|
return $this->joinColumn($name, $table, $query);
|
|
}
|
|
|
|
/**
|
|
* Return the statement column name for the given alias or null in case the alias does not exist
|
|
*
|
|
* @param array|string $table
|
|
* @param string $alias
|
|
*
|
|
* @return string|null
|
|
*/
|
|
public function resolveStatementColumnAlias($table, $alias)
|
|
{
|
|
$statementAliasColumnMap = $this->getStatementAliasColumnMap();
|
|
if (isset($statementAliasColumnMap[$alias])) {
|
|
return $statementAliasColumnMap[$alias];
|
|
}
|
|
|
|
$prefixedAlias = $this->removeTablePrefix($this->clearTableAlias($table)) . '.' . $alias;
|
|
if (isset($statementAliasColumnMap[$prefixedAlias])) {
|
|
return $statementAliasColumnMap[$prefixedAlias];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return the alias for the given statement column name or null in case the statement column does not exist
|
|
*
|
|
* @param array|string $table
|
|
* @param string $column
|
|
*
|
|
* @return string|null
|
|
*/
|
|
public function reassembleStatementColumnAlias($table, $column)
|
|
{
|
|
$statementColumnAliasMap = $this->getStatementColumnAliasMap();
|
|
if (isset($statementColumnAliasMap[$column])) {
|
|
return $statementColumnAliasMap[$column];
|
|
}
|
|
|
|
$prefixedColumn = $this->removeTablePrefix($this->clearTableAlias($table)) . '.' . $column;
|
|
if (isset($statementColumnAliasMap[$prefixedColumn])) {
|
|
return $statementColumnAliasMap[$prefixedColumn];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return whether the given alias or statement column name is available in the given table
|
|
*
|
|
* @param array|string $table
|
|
* @param string $alias
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function validateStatementColumnAssociation($table, $alias)
|
|
{
|
|
$tableName = $this->removeTablePrefix($this->clearTableAlias($table));
|
|
|
|
$statementAliasTableMap = $this->getStatementAliasTableMap();
|
|
if (isset($statementAliasTableMap[$alias])) {
|
|
return $statementAliasTableMap[$alias] === $tableName;
|
|
}
|
|
|
|
$statementColumnTableMap = $this->getStatementColumnTableMap();
|
|
if (isset($statementColumnTableMap[$alias])) {
|
|
return $statementColumnTableMap[$alias] === $tableName;
|
|
}
|
|
|
|
$prefixedAlias = $tableName . '.' . $alias;
|
|
return isset($statementAliasTableMap[$prefixedAlias]) || isset($statementColumnTableMap[$prefixedAlias]);
|
|
}
|
|
|
|
/**
|
|
* Return whether the given column name or alias of the given table is a valid statement column
|
|
*
|
|
* @param array|string $table The table where to look for the column or alias
|
|
* @param string $name The column name or alias to check
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function hasStatementColumn($table, $name)
|
|
{
|
|
if (
|
|
($this->resolveStatementColumnAlias($table, $name) === null
|
|
&& $this->reassembleStatementColumnAlias($table, $name) === null)
|
|
|| !$this->validateStatementColumnAssociation($table, $name)
|
|
) {
|
|
return parent::hasStatementColumn($this->removeTablePrefix($this->clearTableAlias($table)), $name);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Validate that the given column is a valid statement column and return it or the actual name if it's an alias
|
|
*
|
|
* @param array|string $table The table for which to require the column
|
|
* @param string $name The name or alias of the column to validate
|
|
*
|
|
* @return string The given column's name
|
|
*
|
|
* @throws StatementException In case the given column is not a statement column
|
|
*/
|
|
public function requireStatementColumn($table, $name)
|
|
{
|
|
if (($column = $this->resolveStatementColumnAlias($table, $name)) !== null) {
|
|
$alias = $name;
|
|
} elseif (($alias = $this->reassembleStatementColumnAlias($table, $name)) !== null) {
|
|
$column = $name;
|
|
} else {
|
|
return parent::requireStatementColumn($this->removeTablePrefix($this->clearTableAlias($table)), $name);
|
|
}
|
|
|
|
if (! $this->validateStatementColumnAssociation($table, $alias)) {
|
|
throw new StatementException(
|
|
'Statement column "%s" not found in table "%s"',
|
|
$name,
|
|
$this->removeTablePrefix($this->clearTableAlias($table))
|
|
);
|
|
}
|
|
|
|
return $column;
|
|
}
|
|
|
|
/**
|
|
* Join alias or column $name into $table using $query
|
|
*
|
|
* Attempts to find a valid table for the given alias or column name and a method labelled join<TableName>
|
|
* to process the actual join logic. If neither of those is found, ProgrammingError will be thrown.
|
|
* The method is called with the same parameters but in reversed order.
|
|
*
|
|
* @param string $name The alias or column name to join into $target
|
|
* @param array|string $target The table to join $name into
|
|
* @param RepositoryQUery $query The query to apply the JOIN-clause on
|
|
*
|
|
* @return string The resolved alias or $name
|
|
*
|
|
* @throws ProgrammingError In case no valid table or join<TableName>-method is found
|
|
*/
|
|
public function joinColumn($name, $target, RepositoryQuery $query)
|
|
{
|
|
$tableName = $this->findTableName($name);
|
|
if (! $tableName) {
|
|
throw new ProgrammingError(
|
|
'Unable to find a valid table for column "%s" to join into "%s"',
|
|
$name,
|
|
$this->removeTablePrefix($this->clearTableAlias($target))
|
|
);
|
|
}
|
|
|
|
if (($column = $this->resolveQueryColumnAlias($tableName, $name)) === null) {
|
|
$column = $name;
|
|
}
|
|
|
|
$prefixedTableName = $this->prependTablePrefix($tableName);
|
|
if ($query->getQuery()->hasJoinedTable($prefixedTableName)) {
|
|
return $column;
|
|
}
|
|
|
|
$joinMethod = 'join' . String::cname($tableName);
|
|
if (! method_exists($this, $joinMethod)) {
|
|
throw new ProgrammingError(
|
|
'Unable to join table "%s" into "%s". Method "%s" not found',
|
|
$tableName,
|
|
$this->removeTablePrefix($this->clearTableAlias($target)),
|
|
$joinMethod
|
|
);
|
|
}
|
|
|
|
$this->$joinMethod($query, $target, $name);
|
|
return $column;
|
|
}
|
|
|
|
/**
|
|
* Return the table name for the given alias or column name
|
|
*
|
|
* @param string $column
|
|
*
|
|
* @return string|null null in case no table is found
|
|
*/
|
|
protected function findTableName($column)
|
|
{
|
|
$aliasTableMap = $this->getAliasTableMap();
|
|
if (isset($aliasTableMap[$column])) {
|
|
return $aliasTableMap[$column];
|
|
}
|
|
|
|
$columnTableMap = $this->getColumnTableMap();
|
|
if (isset($columnTableMap[$column])) {
|
|
return $columnTableMap[$column];
|
|
}
|
|
|
|
// TODO(jom): Elaborate whether it makes sense to throw ProgrammingError
|
|
// instead (duplicate aliases in different tables?)
|
|
foreach ($aliasTableMap as $prefixedAlias => $table) {
|
|
if (strpos($prefixedAlias, '.') !== false) {
|
|
list($_, $alias) = explode('.', $prefixedAlias, 2);
|
|
if ($alias === $column) {
|
|
return $table;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|