145 lines
3.9 KiB
PHP
145 lines
3.9 KiB
PHP
<?php
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namespace PicoDb;
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use PDO;
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class Hashtable extends Table
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{
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private $column_key = 'key';
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private $column_value = 'value';
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/**
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* Set the key column
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*
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* @access public
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* @param string $column
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* @return \PicoDb\Table
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*/
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public function columnKey($column)
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{
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$this->column_key = $column;
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return $this;
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}
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/**
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* Set the value column
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*
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* @access public
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* @param string $column
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* @return \PicoDb\Table
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*/
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public function columnValue($column)
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{
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$this->column_value = $column;
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return $this;
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}
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/**
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* Insert or update
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*
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* @access public
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* @param array $data
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* @return boolean
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*/
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public function put(array $data)
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{
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switch ($this->db->getConnection()->getAttribute(PDO::ATTR_DRIVER_NAME)) {
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case 'mysql':
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$sql = sprintf(
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'REPLACE INTO %s (%s) VALUES %s',
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$this->db->escapeIdentifier($this->table_name),
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"$this->column_key, $this->column_value",
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implode(', ', array_fill(0, count($data), '(?, ?)'))
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);
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foreach ($data as $key => $value) {
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$this->values[] = $key;
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$this->values[] = $value;
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}
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$this->db->execute($sql, $this->values);
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break;
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case 'sqlite': // multi insert (see mysql) requires sqlite library > 3.7.11 (bundled with PHP 5.5.11+)
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// all or nothing
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$this->db->startTransaction();
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foreach($data as $key => $value) {
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$sql = sprintf(
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'INSERT OR REPLACE INTO %s (%s) VALUES (?, ?)',
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$this->db->escapeIdentifier($this->table_name),
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$this->db->escapeIdentifier($this->column_key).', '.$this->db->escapeIdentifier($this->column_value)
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);
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$this->db->execute($sql, array($key, $value));
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}
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break;
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default: // no upsert available, need to make a select/update/insert limbo
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// all or nothing
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$this->db->startTransaction();
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foreach($data as $key => $value) {
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// check if the key exists
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$this->eq($this->column_key, $key);
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if ($this->count() === 1) {
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// update the record
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$this->update(array($this->column_key => $key, $this->column_value => $value));
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}
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else {
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// insert the record
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$this->insert(array($this->column_key => $key, $this->column_value => $value));
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}
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}
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}
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$this->db->closeTransaction();
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return true;
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}
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/**
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* Hashmap result [ [column1 => column2], [], ...]
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*
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* @access public
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* @return array
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*/
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public function get()
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{
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$hashmap = array();
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// setup where condition
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if (func_num_args() > 0) {
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$this->in($this->column_key, func_get_args());
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}
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// setup to select columns in case that there are more than two
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$this->columns($this->column_key, $this->column_value);
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$rq = $this->db->execute($this->buildSelectQuery(), $this->values);
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$rows = $rq->fetchAll(PDO::FETCH_NUM);
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foreach ($rows as $row) {
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$hashmap[$row[0]] = $row[1];
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}
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return $hashmap;
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}
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/**
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* Shortcut method to get a hashmap result
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*
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* @access public
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* @param string $key Key column
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* @param string $value Value column
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* @return array
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*/
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public function getAll($key, $value)
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{
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$this->column_key = $key;
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$this->column_value = $value;
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return $this->get();
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}
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}
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