wip, proof-of-concept for fetching mods and inserting link-back into …

…<abstract>

extras/samples/lsu_tulane_oai.ini

@@ -16,28 +16,27 @@ oai_endpoint = "https://digitallibrary.tulane.edu/oai2"
 ;set_spec = tulane_p16313coll73
 set_spec = tulane_p16313coll75
 ;set_spec = tulane_p16313coll64
-metadata_prefix = oai_dc
+metadata_prefix = mods
 ;date-ranging
 ;from = 2005-09-13
 ;until = 2005-09-14
-temp_directory = "/tmp/oaitest_temp"
+temp_directory = "tulane/tmp"
 
 [METADATA_PARSER]
 class = dc\OaiToDc
 
 [FILE_GETTER]
 class = OaipmhIslandoraObj
 datastream_ids[] = "TN"
-temp_directory = "/tmp/oaitest_temp"
+temp_directory = "tulane/tmp"
 
 
 [WRITER]
-class = LsuOaipmh
-output_directory = "/tmp/oaitest_output"
+class = OAIAggregator
+output_directory = "tulane/out"
 ;had to fix the path on this one... 
 ;postwritehooks[] = "/usr/bin/php extras/scripts/postwritehooks/oai_dc_to_mods.php"
 
-
 [MANIPULATORS]
 ;fetchermanipulator = "RandomSet|10"
 ;fetchermanipulator = "SpecificSet|kora_specific_set.txt"
@@ -47,4 +46,4 @@ output_directory = "/tmp/oaitest_output"
 
 [LOGGING]
 ; Full path to log file for mik log files
-path_to_log = "/tmp/oaitest_output/mik.log"
+path_to_log = "tulane/out/mik.log"

src/writers/OAIAggregator.php

@@ -0,0 +1,72 @@
+<?php
+namespace mik\writers;
+
+use GuzzleHttp\Client;
+use mik\exceptions\MikErrorException;
+use Monolog\Logger;
+
+class OAIAggregator extends Oaipmh
+{
+
+    public function __construct($settings) {
+
+        $this->temp_directory = $settings['FILE_GETTER']['temp_directory'];
+        parent::__construct($settings);
+    }
+
+    public function writePackages($metadata, $pages, $record_id) {
+        $this->record_id = $record_id;
+        parent::writePackages($metadata, $pages, $record_id);
+    }
+
+    public function getTempFile($path) {
+        $id = explode(DIRECTORY_SEPARATOR, $path);
+        return array_pop($id);
+    }
+
+    public function parseIdentifierForUrl($temp_file) {
+        $contents = file_get_contents($temp_file);
+        $xml = new \SimpleXMLElement($contents);
+
+        $id = $xml->header->identifier;
+        $parts = explode(":", $id);
+        $protocol = $parts[1];
+        $rawPid = $parts[3];
+        $pid = str_replace('_', ':', $rawPid);
+        $url = $protocol . ":" . $parts[2] . "islandora/object" . '/' . $pid;
+             //oai:http://digitallibrary.tulane.edu/:tulane_70
+        return $url;
+    }
+
+    public function writeMetadataFile($metadata, $path, $overwrite = true)
+    {
+        //        var_dump($this->getTempFile($this->record_id)); die();
+        //$temp_file = $this->temp_directory . DIRECTORY_SEPARATOR . $this->getTempFile($path);
+        $temp_file = $this->temp_directory . DIRECTORY_SEPARATOR . $this->record_id . '.metadata';
+        $url = $this->parseIdentifierForUrl($temp_file);
+        $mods_ns = 'http://www.loc.gov/mods/v3';
+        $doc = new \DomDocument('1.0');
+        $doc->loadXML($metadata);
+        $doc->formatOutput = true;
+        $root = $doc->getElementsByTagNameNS($mods_ns, 'mods')->item(0);
+
+        //grab existing element abstract which has tulane:item
+        $oldAbstract = $doc->getElementsByTagNameNS($mods_ns, 'abstract')->item(0);
+        $abstractText = sprintf("(Original record: %s)  %s", $url, $oldAbstract->textContent);
+
+        //new path added as element to root then
+        $newAbstract = $doc->createElement('abstract', $abstractText);
+        $root->replaceChild($newAbstract, $oldAbstract);
+        //        $root->appendChild($newAbstract);
+
+        $metadata = $doc->saveXML();
+
+        if ($path !='') {
+            $fileCreationStatus = file_put_contents($path, $metadata);
+            if ($fileCreationStatus === false) {
+                $this->log->addWarning("There was a problem writing the metadata to a file",
+                    array('file' => $path));
+            }
+        }
+    }
+}