added data export example

Jan Steemann · Jan Steemann · commit b42502f632ea · 2015-04-24T15:34:52.000+02:00
diff --git a/README.md b/README.md
@@ -514,7 +514,7 @@ $export = new ArangoExport($connection, 'users', array());
 $cursor = $export->execute();
 
 // now we can fetch the documents from the collection in blocks
-while ($docs = $export->getNextBatch()) {
+while ($docs = $cursor->getNextBatch()) {
     // do something with $docs
     var_dump($docs);
 }
diff --git a/examples/export.php b/examples/export.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace triagens\ArangoDb;
+
+require dirname(__FILE__) . DIRECTORY_SEPARATOR . 'init.php';
+
+try {
+    $connection = new Connection($connectionOptions);
+
+    // creates an export object for collection 'users'
+    $export = new Export($connection, 'users', array(
+        "batchSize" => 5000,
+        "_flat" => true,
+        "flush" => true,
+        "restrict" => array(
+            "type" => "include",
+            "fields" => array("_key", "_rev")
+        )
+    ));
+
+    // execute the export. this will return a special, forward-only cursor
+    $cursor = $export->execute();
+
+    // now we can fetch the documents from the collection in blocks
+    while ($docs = $cursor->getNextBatch()) {
+        // do something with $docs
+        print sprintf("retrieved %d documents", count($docs)) . PHP_EOL;
+    }
+
+} catch (ConnectException $e) {
+    print $e . PHP_EOL;
+} catch (ServerException $e) {
+    print $e . PHP_EOL;
+} catch (ClientException $e) {
+    print $e . PHP_EOL;
+}

Original file line number	Diff line number	Diff line change
`@@ -514,7 +514,7 @@ $export = new ArangoExport($connection, 'users', array());`
`514`	`514`	`$cursor = $export->execute();`
`515`	`515`
`516`	`516`	`// now we can fetch the documents from the collection in blocks`
`517`		`-while ($docs = $export->getNextBatch()) {`
	`517`	`+while ($docs = $cursor->getNextBatch()) {`
`518`	`518`	`// do something with $docs`
`519`	`519`	`var_dump($docs);`
`520`	`520`	`}`