File: examples/2_example_store_mapreduce_invoices.php

Recommend this page to a friend!
  Classes of Jorge Castro  >  PHP Document Store One  >  examples/2_example_store_mapreduce_invoices.php  >  Download  
File: examples/2_example_store_mapreduce_invoices.php
Role: Example script
Content type: text/plain
Description: Example script
Class: PHP Document Store One
Store and retrieve key-value pairs in flat files
Author: By
Last change: 1.5
1.1
Date: 11 months ago
Size: 2,022 bytes
 

Contents

Class file image Download
<?php
@ob_start();
ob_implicit_flush(true);
ob_end_flush();
@
set_time_limit(60*60); // 1 hour.
use eftec\DocumentStoreOne\DocumentStoreOne;

/**
 * It map-reduce invoices according the customers.
 * @author Jorge Castro Castillo jcastro@eftec.cl
 * @license LGPLv3
 */

include "../lib/DocumentStoreOne.php";
include
"modelinvoices/Models.php";
echo
"<h1>Map Reduce</h1>";
echo
"We have several invoices, we are mapping an invoice with a customer, so we could consult all the invoices x customer without reading all the invoices<br>";
echo
"The limit of this strategy is the size of the file and it must be open on memory<br>";
echo
"generating map reduce for invoice per customer...<br>";
@
flush();
@
ob_flush();


$t1=microtime(true);

try {
   
$flatcon = new DocumentStoreOne(dirname(__FILE__) . "/base", 'invoices');
} catch (
Exception $e) {
    die(
"Unable to create document store");
}


$listInvoices=$flatcon->select();

$customers=[]; // It's an example to mapreduces. In this case, it reduces the invoice per customers so it generates a customer x invoice table

$igbinary=function_exists('igbinary_serialize');

foreach(
$listInvoices as $i) {
    if (
$i!='genseq_seq') { // we skip the sequence

       
if ($igbinary) {
           
$inv=igbinary_unserialize($flatcon->get($i));
        } else {
           
$invTmp = json_decode($flatcon->get($i)); // $invTmp is stdclass
           
$inv = new Invoice();
           
DocumentStoreOne::fixCast($inv, $invTmp); // $inv is a Invoice class. However, $inv->details is a stdClass[]
       
}

       
$customers[$inv->customer->name][] = $i;
    }
}
if (
$igbinary) {
   
$flatcon->collection("invoicemap")->insertOrUpdate("invoicexcustomer", igbinary_serialize($customers));
} else {
   
$flatcon->collection("invoicemap")->insertOrUpdate("invoicexcustomer", json_encode($customers));
}
$t2=microtime(true);
echo
"store mapreduce microseconds :".($t2-$t1)." seconds.<br>";
echo
"<hr>";
echo
"<pre>";
echo
json_encode($customers,JSON_PRETTY_PRINT);
echo
"</pre>";




For more information send a message to info at phpclasses dot org.