More refactoring
This commit is contained in:
Daniel Neis Araujo
parent
1a2e5be242
commit
cef72091cf
26
index.php
26
index.php
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@ -9,33 +9,33 @@
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* the support of on-the-fly output compression which may significantly
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* reduce the amount of data being transfered.
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*
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* This package has been inspired by PHP OAI Data Provider developed by Heinrich Stamerjohanns at University of Oldenburg.
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* This package has been inspired by PHP OAI Data Provider developed by Heinrich Stamerjohanns at University of Oldenburg.
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* Some of the functions and algorithms used in this code were transplanted from his implementation at http://physnet.uni-oldenburg.de/oai/.
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*
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* Database support is supported through PDO (PHP Data Objects included in
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* the PHP distribution), so almost any popular SQL-database can be
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* Database support is supported through PDO (PHP Data Objects included in
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* the PHP distribution), so almost any popular SQL-database can be
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* used without any change in the code. Only thing need to do is to configure
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* database connection and define a suitable data structure.
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*
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* The repository can be quite easily configured by just editing
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* The repository can be quite easily configured by just editing
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* oaidp-config.php, most possible values and options are explained.
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*
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* \section req_sec Requirements
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* - A running web server + PHP version 5.0 or above.
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* - A databse can be connected by PDO.
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* - A databse can be connected by PDO.
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*
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* \section install_sec Installation
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*
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*- Copy the the files in source package to a location under your
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* document root of your web server. The directory structure should be
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* preserved.
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* preserved.
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*- Change to that directory (e.g. cd /var/www/html/oai).
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*- Allow your webserver to write to the token directory.
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* The default token directory is /tmp which does not need any attention.
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*- Edit oaidp-config.php. Almost all possible options are
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* explained. It is assumed that basic elements of a record are stored in
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*- Edit oaidp-config.php. Almost all possible options are
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* explained. It is assumed that basic elements of a record are stored in
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* one simple table. You can find sql examples of table definition in doc folder.
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* If your data is organized differently, you have to adjust the <i>Query</i> functions
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* If your data is organized differently, you have to adjust the <i>Query</i> functions
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* to reflect it and even develop your own code.
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*- Check your oai site through a web browser. e.g. : \code http://localhost/oai/ \endcode
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*- SELinux needs special treatments for database connection and other permission.
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@ -91,14 +91,14 @@ $MY_URI = substr($MY_URI, 0, $pos). '/oai2.php';
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<p>This implementation completely complies to <a href="http://www.openarchives.org/OAI/openarchivesprotocol.html" target="_blank">OAI-PMH 2.0</a>, including the support of on-the-fly output compression which may significantly
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reduce the amount of data being transfered.</p>
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<p> This package has been inspired by <a href='http://physnet.uni-oldenburg.de/oai/' target="_blank">PHP OAI Data Provider</a> developed by Heinrich Stamerjohanns at University of Oldenburg.
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<p> This package has been inspired by <a href='http://physnet.uni-oldenburg.de/oai/' target="_blank">PHP OAI Data Provider</a> developed by Heinrich Stamerjohanns at University of Oldenburg.
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Some of the functions and algorithms used in this code were transplanted from his implementation.<p>
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<p>Database is supported through <a href="http://www.php.net/manual/en/book.pdo.php" target="_blank"><dfn><abbr title="PHP Data Objects">PDO</abbr></dfn></a>, so almost any popular SQL-database which has PDO driver can be used without any change in the code.</p>
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<p>Database is supported through <a href="http://www.php.net/manual/en/book.pdo.php" target="_blank"><dfn><abbr title="PHP Data Objects">PDO</abbr></dfn></a>, so almost any popular SQL-database which has PDO driver can be used without any change in the code.</p>
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<p> It uses <dfn>DOM extension</dfn>,an extension included in every PHP installation since version 5, for generating XML files. With PHP 5 or above no extra extension is needed.</p>
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<p>The repository can be quite easily configured by just editing oai2/oaidp-config.php, most possible values and options are explained.
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<p>The repository can be quite easily configured by just editing oai2/oaidp-config.php, most possible values and options are explained.
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For requirements and instructions to install and configure, please reference <a href="doc/index.html">the documentation</a>.</p>
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<p>Once you have setup your Data Provider, you can the easiliy check the generated answers (it will be XML) of your Data Provider
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@ -106,7 +106,7 @@ by clicking on the <a href="#tests">test links below</a>. </p>
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<p>For simple visual tests set <em>$SHOW_QUERY_ERROR</em> to <em>TRUE</em> and <em>$CONTENT_TYPE</em> to <em>text/plain</em>, so you can easily read the generated XML responses in your browser. </p>
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<p><strong>Remember</strong>, <em>GetRecord</em> needs <b><i>identifier</i></b> to work.
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<p><strong>Remember</strong>, <em>GetRecord</em> needs <b><i>identifier</i></b> to work.
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So please change it use your own or you should see a response with error message.</p>
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<p>
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13
oai2.php
13
oai2.php
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@ -1,18 +1,5 @@
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<?php
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/**
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* OAI Data Provider command processor
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*
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* OAI Data Provider is not designed for human to retrieve data.
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*
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* This is an implementation of OAI Data Provider version 2.0.
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* @see http://www.openarchives.org/OAI/2.0/openarchivesprotocol.htm
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*
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* It needs other files:
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* - oaidp-util.php : Utility functions
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*
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*/
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require_once('oaidp-util.php');
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require_once('oai2server.php');
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/**
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@ -12,7 +12,6 @@ class OAI2Exception extends Exception {
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'text' => "The value '{$value}' of attribute '{$argument}' on element 'request' is not valid with respect to its type, 'UTCdatetimeType'.",
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'code' => 'badArgument',
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),
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'badResumptionToken' => array(
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'text' => "The resumptionToken '{$value}' does not exist or has already expired.",
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),
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@ -32,12 +31,6 @@ class OAI2Exception extends Exception {
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),
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'idDoesNotExist' => array(
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'text' => "The value '{$value}' of the identifier does not exist in this repository.",
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/*
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if (!is_valid_uri($value)) {
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'code' = 'badArgument',
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'text' .= ' Invalidated URI has been detected.',
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}
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*/
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),
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'missingArgument' => array(
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'text' => "The required argument '{$argument}' is missing in the request.",
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423
oai2server.php
423
oai2server.php
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@ -1,195 +1,141 @@
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<?php
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require_once('oai2exception.php');
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require_once('oai2xml.php');
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/**
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* The content-type the WWW-server delivers back. For debug-puposes, "text/plain"
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* is easier to view. On a production site you should use "text/xml".
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* This is an implementation of OAI Data Provider version 2.0.
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* @see http://www.openarchives.org/OAI/2.0/openarchivesprotocol.htm
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*/
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define('CONTENT_TYPE', 'Content-Type: text/xml');
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/** After 24 hours resumptionTokens become invalid. Unit is second. */
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define('TOKEN_VALID',24*3600);
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/** Where token is saved and path is included */
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define('TOKEN_PREFIX','/tmp/oai_pmh-');
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class OAI2Server {
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public $errors = array();
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private $args = array();
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private $verb = '';
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private $token_prefix = '/tmp/oai_pmh-';
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private $token_valid = 86400;
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function __construct($uri, $args, $identifyResponse, $callbacks) {
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if (!isset($args['verb']) || empty($args['verb'])) {
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$this->errors[] = new OAI2Exception('noVerb');
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$this->errorResponse();
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}
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} else {
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$verbs = array('Identify', 'ListMetadataFormats', 'ListSets', 'ListIdentifiers', 'ListRecords', 'GetRecord');
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if (in_array($args['verb'], $verbs)) {
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$this->verb = $args['verb'];
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unset($args['verb']);
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$this->args = $args;
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$this->verb = $args['verb'];
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$this->uri = $uri;
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unset($args['verb']);
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$this->identifyResponse = $identifyResponse;
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$this->args = $args;
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$this->listMetadataFormatsCallback = $callbacks['ListMetadataFormats'];
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$this->listSetsCallback = $callbacks['ListSets'];
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$this->listRecordsCallback = $callbacks['ListRecords'];
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$this->getRecordCallback = $callbacks['GetRecord'];
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$this->uri = $uri;
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$this->response = new OAI2XMLResponse($this->uri, $this->verb, $this->args);
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$this->identifyResponse = $identifyResponse;
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$this->respond();
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}
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$this->listMetadataFormatsCallback = $callbacks['ListMetadataFormats'];
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$this->listSetsCallback = $callbacks['ListSets'];
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$this->listRecordsCallback = $callbacks['ListRecords'];
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$this->getRecordCallback = $callbacks['GetRecord'];
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private function respond() {
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$this->response = new OAI2XMLResponse($this->uri, $this->verb, $this->args);
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switch ($this->verb) {
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call_user_func(array($this, $this->verb));
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case 'Identify': $this->identify(); break;
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case 'ListMetadataFormats': $this->listMetadataFormats(); break;
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case 'ListSets': $this->listSets(); break;
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case 'ListIdentifiers':
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case 'ListRecords': $this->listRecords(); break;
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case 'GetRecord': $this->getRecord(); break;
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default: $this->errors[] = new OAI2Exception('badVerb', $this->args['verb']);
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} else {
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$this->errors[] = new OAI2Exception('badVerb', $args['verb']);
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}
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}
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if (empty($this->errors)) {
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header(CONTENT_TYPE);
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$this->response->display();
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} else {
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$this->errorResponse();
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$errorResponse = new OAI2XMLResponse($this->uri, $this->verb, $this->args);
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$oai_node = $errorResponse->doc->documentElement;
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foreach($this->errors as $e) {
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$node = $errorResponse->addChild($oai_node,"error",$e->getMessage());
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$node->setAttribute("code",$e->getOAI2Code());
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}
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$errorResponse->display();
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}
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}
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private function errorResponse() {
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$errorResponse = new OAI2XMLResponse($this->uri, $this->verb, $this->args);
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$oai_node = $errorResponse->doc->documentElement;
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foreach($this->errors as $e) {
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$node = $errorResponse->addChild($oai_node,"error",$e->getMessage());
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$node->setAttribute("code",$e->getOAI2Code());
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}
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header(CONTENT_TYPE);
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$errorResponse->display();
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exit();
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}
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/**
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* Response to Verb Identify
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*
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* Tell the world what the data provider is. Usually it is static once the provider has been set up.
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*
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* http://www.openarchives.org/OAI/2.0/guidelines-oai-identifier.htm for details
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*/
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public function identify() {
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public function Identify() {
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if (count($this->args) > 0) {
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foreach($args as $key => $val) {
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foreach($this->args as $key => $val) {
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$this->errors[] = new OAI2Exception('badArgument', $key, $val);
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}
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$this->errorResponse();
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}
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foreach($this->identifyResponse as $key => $val) {
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$this->response->addToVerbNode($key, $val);
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} else {
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foreach($this->identifyResponse as $key => $val) {
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$this->response->addToVerbNode($key, $val);
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}
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}
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}
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/**
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* Response to Verb ListMetadataFormats
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*
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* The information of supported metadata formats
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*/
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public function listMetadataFormats() {
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public function ListMetadataFormats() {
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foreach ($this->args as $argument => $value) {
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if ($argument != 'identifier') {
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$this->errors[] = new OAI2Exception('badArgument', $argument, $value);
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}
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}
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if (!empty($this->errors)) {
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$this->errorResponse();
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}
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try {
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if ($formats = call_user_func($this->listMetadataFormatsCallback, $this->args['identifier'])) {
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foreach($formats as $key => $val) {
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$cmf = $this->response->addToVerbNode("metadataFormat");
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$this->response->addChild($cmf,'metadataPrefix',$key);
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$this->response->addChild($cmf,'schema',$val['schema']);
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$this->response->addChild($cmf,'metadataNamespace',$val['metadataNamespace']);
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if (empty($this->errors)) {
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try {
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if ($formats = call_user_func($this->listMetadataFormatsCallback, $this->args['identifier'])) {
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foreach($formats as $key => $val) {
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$cmf = $this->response->addToVerbNode("metadataFormat");
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$this->response->addChild($cmf,'metadataPrefix',$key);
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$this->response->addChild($cmf,'schema',$val['schema']);
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$this->response->addChild($cmf,'metadataNamespace',$val['metadataNamespace']);
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}
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} else {
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$this->errors[] = new OAI2Exception('noMetadataFormats');
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}
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} else {
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$this->errors[] = new OAI2Exception('noMetadataFormats');
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} catch (OAI2Exception $e) {
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$this->errors[] = $e;
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}
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} catch (OAI2Exception $e) {
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$this->errors[] = $e;
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}
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}
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/**
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* Response to Verb ListSets
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*
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* Lists what sets are available to records in the system.
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* This variable is filled in config-sets.php
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*/
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public function listSets() {
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public function ListSets() {
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if (isset($this->args['resumptionToken'])) {
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if (count($this->args) > 1) {
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$this->errors[] = new OAI2Exception('exclusiveArgument');
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} else {
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if ((int)$val+TOKEN_VALID < time()) {
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if ((int)$val+$this->token_valid < time()) {
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$this->errors[] = new OAI2Exception('badResumptionToken');
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}
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}
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$resumptionToken = $this->args['resumptionToken'];
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} else {
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$resumptionToken = null;
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}
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if (!empty($this->errors)) {
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$this->errorResponse();
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}
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if ($sets = call_user_func($this->listSetsCallback, $resumptionToken)) {
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if ($sets = call_user_func($this->listSetsCallback)) {
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foreach($sets as $set) {
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foreach($sets as $set) {
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$setNode = $this->response->addToVerbNode("set");
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$setNode = $this->response->addToVerbNode("set");
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foreach($set as $key => $val) {
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if($key=='setDescription') {
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$desNode = $this->response->addChild($setNode,$key);
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$des = $this->response->doc->createDocumentFragment();
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$des->appendXML($val);
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$desNode->appendChild($des);
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} else {
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$this->response->addChild($setNode,$key,$val);
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foreach($set as $key => $val) {
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if($key=='setDescription') {
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$desNode = $this->response->addChild($setNode,$key);
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$des = $this->response->doc->createDocumentFragment();
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$des->appendXML($val);
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$desNode->appendChild($des);
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} else {
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$this->response->addChild($setNode,$key,$val);
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}
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}
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}
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} else {
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$this->errors[] = new OAI2Exception('noSetHierarchy');
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}
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} else {
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$this->errors[] = new OAI2Exception('noSetHierarchy');
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}
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}
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/**
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* Response to Verb GetRecord
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*
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* Retrieve a record based its identifier.
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*
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* Local variables <B>$metadataPrefix</B> and <B>$identifier</B> need to be provided through global array variable <B>$args</B>
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* by their indexes 'metadataPrefix' and 'identifier'.
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* The reset of information will be extracted from database based those two parameters.
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*/
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public function getRecord() {
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public function GetRecord() {
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if (!isset($this->args['metadataPrefix'])) {
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$this->errors[] = new OAI2Exception('missingArgument', 'metadataPrefix');
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|
@ -202,52 +148,66 @@ class OAI2Server {
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if (!isset($this->args['identifier'])) {
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$this->errors[] = new OAI2Exception('missingArgument', 'identifier');
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}
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if (!empty($this->errors)) {
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$this->errorResponse();
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}
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try {
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if ($record = call_user_func($this->getRecordCallback, $this->args['identifier'], $this->args['metadataPrefix'])) {
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if (empty($this->errors)) {
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try {
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if ($record = call_user_func($this->getRecordCallback, $this->args['identifier'], $this->args['metadataPrefix'])) {
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$identifier = $record['identifier'];
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$identifier = $record['identifier'];
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$datestamp = formatDatestamp($record['datestamp']);
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$datestamp = $this->formatDatestamp($record['datestamp']);
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$set = $record['set'];
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$set = $record['set'];
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$status_deleted = (isset($record['deleted']) && ($record['deleted'] == 'true') &&
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(($this->identifyResponse['deletedRecord'] == 'transient') ||
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($this->identifyResponse['deletedRecord'] == 'persistent')));
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$status_deleted = (isset($record['deleted']) && ($record['deleted'] == 'true') &&
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(($this->identifyResponse['deletedRecord'] == 'transient') ||
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($this->identifyResponse['deletedRecord'] == 'persistent')));
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$cur_record = $this->response->addToVerbNode('record');
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$cur_header = $this->response->createHeader($identifier, $datestamp, $set, $cur_record);
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if ($status_deleted) {
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$cur_header->setAttribute("status","deleted");
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$cur_record = $this->response->addToVerbNode('record');
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$cur_header = $this->response->createHeader($identifier, $datestamp, $set, $cur_record);
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if ($status_deleted) {
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$cur_header->setAttribute("status","deleted");
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} else {
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$this->add_metadata($cur_record, $record);
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}
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} else {
|
||||
$this->add_metadata($cur_record, $record);
|
||||
$this->errors[] = new OAI2Exception('idDoesNotExist', 'identifier', $identifier);
|
||||
}
|
||||
} catch (OAI2Exception $e) {
|
||||
$this->errors[] = $e;
|
||||
}
|
||||
} catch (OAI2Exception $e) {
|
||||
$this->errors[] = $e;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Response to Verb ListRecords
|
||||
*
|
||||
* Lists records according to conditions. If there are too many, a resumptionToken is generated.
|
||||
* - If a request comes with a resumptionToken and is still valid, read it and send back records.
|
||||
* - Otherwise, set up a query with conditions such as: 'metadataPrefix', 'from', 'until', 'set'.
|
||||
* Only 'metadataPrefix' is compulsory. All conditions are accessible through global array variable <B>$args</B> by keywords.
|
||||
*/
|
||||
public function listRecords() {
|
||||
public function ListIdentifiers() {
|
||||
return $this->ListRecords();
|
||||
}
|
||||
|
||||
public function ListRecords() {
|
||||
|
||||
$maxItems = 1000;
|
||||
$deliveredRecords = 0;
|
||||
$metadataPrefix = $this->args['metadataPrefix'];
|
||||
$from = isset($this->args['from']) ? $this->args['from'] : '';
|
||||
$until = isset($this->args['until']) ? $this->args['until'] : '';
|
||||
$set = isset($this->args['set']) ? $this->args['set'] : '';
|
||||
|
||||
if (isset($this->args['resumptionToken'])) {
|
||||
if (count($this->args) > 1) {
|
||||
$this->errors[] = new OAI2Exception('exclusiveArgument');
|
||||
} else {
|
||||
if ((int)$val+TOKEN_VALID < time()) {
|
||||
if ((int)$val+$this->token_valid < time()) {
|
||||
$this->errors[] = new OAI2Exception('badResumptionToken');
|
||||
} else {
|
||||
if (!file_exists($this->token_prefix.$this->args['resumptionToken'])) {
|
||||
$this->errors[] = new OAI2Exception('badResumptionToken', '', $this->args['resumptionToken']);
|
||||
} else {
|
||||
if ($readings = $this->readResumptionToken($this->token_prefix.$this->args['resumptionToken'])) {
|
||||
list($deliveredRecords, $metadataPrefix, $from, $until, $set) = $readings;
|
||||
} else {
|
||||
$this->errors[] = new OAI2Exception('badResumptionToken', '', $this->args['resumptionToken']);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
|
|
@ -260,99 +220,69 @@ class OAI2Server {
|
|||
}
|
||||
}
|
||||
if (isset($this->args['from'])) {
|
||||
if(!checkDateFormat($this->args['from'])) {
|
||||
$this->errors[] = new OAI2Exception('badGranularity', 'from', $this->args['from']);
|
||||
if(!$this->checkDateFormat($this->args['from'])) {
|
||||
$this->errors[] = new OAI2Exception('badGranularity', 'from', $this->args['from']);
|
||||
}
|
||||
}
|
||||
if (isset($this->args['until'])) {
|
||||
if(!checkDateFormat($this->args['until'])) {
|
||||
$this->errors[] = new OAI2Exception('badGranularity', 'until', $this->args['until']);
|
||||
if(!$this->checkDateFormat($this->args['until'])) {
|
||||
$this->errors[] = new OAI2Exception('badGranularity', 'until', $this->args['until']);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
if (!empty($this->errors)) {
|
||||
$this->errorResponse();
|
||||
}
|
||||
try {
|
||||
|
||||
// Resume previous session?
|
||||
if (isset($this->args['resumptionToken'])) {
|
||||
$records_count = call_user_func($this->listRecordsCallback, $metadataPrefix, $from, $until, $set, true);
|
||||
|
||||
if (!file_exists(TOKEN_PREFIX.$this->args['resumptionToken'])) {
|
||||
$this->errors[] = new OAI2Exception('badResumptionToken', '', $this->args['resumptionToken']);
|
||||
} else {
|
||||
$records = call_user_func($this->listRecordsCallback, $metadataPrefix, $from, $until, $set, false, $deliveredRecords, $maxItems);
|
||||
|
||||
if ($readings = $this->readResumptionToken(TOKEN_PREFIX.$this->args['resumptionToken'])) {
|
||||
list($deliveredRecords, $metadataPrefix, $from, $until, $set) = $readings;
|
||||
} else {
|
||||
$this->errors[] = new OAI2Exception('badResumptionToken', '', $this->args['resumptionToken']);
|
||||
foreach ($records as $record) {
|
||||
|
||||
$identifier = $record['identifier'];
|
||||
$datestamp = $this->formatDatestamp($record['datestamp']);
|
||||
$setspec = $record['set'];
|
||||
|
||||
$status_deleted = (isset($record['deleted']) && ($record['deleted'] === true) &&
|
||||
(($this->identifyResponse['deletedRecord'] == 'transient') ||
|
||||
($this->identifyResponse['deletedRecord'] == 'persistent')));
|
||||
|
||||
if($this->args['verb'] == 'ListRecords') {
|
||||
$cur_record = $this->response->createToVerNode('record');
|
||||
$cur_header = $this->response->createHeader($identifier, $datestamp,$setspec,$cur_record);
|
||||
if (!$status_deleted) {
|
||||
$this->add_metadata($cur_record, $record);
|
||||
}
|
||||
} else { // for ListIdentifiers, only identifiers will be returned.
|
||||
$cur_header = $this->response->createHeader($identifier, $datestamp,$setspec);
|
||||
}
|
||||
if ($status_deleted) {
|
||||
$cur_header->setAttribute("status","deleted");
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
// Will we need a new ResumptionToken?
|
||||
if ($records_count - $deliveredRecords > $maxItems) {
|
||||
|
||||
if (!empty($this->errors)) {
|
||||
$this->errorResponse();
|
||||
}
|
||||
$deliveredRecords += $maxItems;
|
||||
$restoken = $this->createResumptionToken($deliveredRecords);
|
||||
|
||||
} else {
|
||||
$deliveredRecords = 0;
|
||||
$metadataPrefix = $this->args['metadataPrefix'];
|
||||
$from = isset($this->args['from']) ? $this->args['from'] : '';
|
||||
$until = isset($this->args['until']) ? $this->args['until'] : '';
|
||||
$set = isset($this->args['set']) ? $this->args['set'] : '';
|
||||
}
|
||||
$expirationDatetime = gmstrftime('%Y-%m-%dT%TZ', time()+$this->token_valid);
|
||||
|
||||
$maxItems = 1000;
|
||||
try {
|
||||
|
||||
$records_count = call_user_func($this->listRecordsCallback, $metadataPrefix, $from, $until, $set, true);
|
||||
|
||||
$records = call_user_func($this->listRecordsCallback, $metadataPrefix, $from, $until, $set, false, $deliveredRecords, $maxItems);
|
||||
|
||||
foreach ($records as $record) {
|
||||
|
||||
$identifier = $record['identifier'];
|
||||
$datestamp = formatDatestamp($record['datestamp']);
|
||||
$setspec = $record['set'];
|
||||
|
||||
$status_deleted = (isset($record['deleted']) && ($record['deleted'] === true) &&
|
||||
(($this->identifyResponse['deletedRecord'] == 'transient') ||
|
||||
($this->identifyResponse['deletedRecord'] == 'persistent')));
|
||||
|
||||
if($this->args['verb'] == 'ListRecords') {
|
||||
$cur_record = $this->response->createToVerNode('record');
|
||||
$cur_header = $this->response->createHeader($identifier, $datestamp,$setspec,$cur_record);
|
||||
if (!$status_deleted) {
|
||||
$this->add_metadata($cur_record, $record);
|
||||
}
|
||||
} else { // for ListIdentifiers, only identifiers will be returned.
|
||||
$cur_header = $this->response->createHeader($identifier, $datestamp,$setspec);
|
||||
} elseif (isset($args['resumptionToken'])) {
|
||||
// Last delivery, return empty ResumptionToken
|
||||
$restoken = null;
|
||||
$expirationDatetime = null;
|
||||
}
|
||||
if ($status_deleted) {
|
||||
$cur_header->setAttribute("status","deleted");
|
||||
|
||||
if (isset($restoken)) {
|
||||
$this->response->createResumptionToken($restoken,$expirationDatetime,$records_count,$deliveredRecords);
|
||||
}
|
||||
|
||||
} catch (OAI2Exception $e) {
|
||||
$this->errors[] = $e;
|
||||
}
|
||||
|
||||
// Will we need a new ResumptionToken?
|
||||
if ($records_count - $deliveredRecords > $maxItems) {
|
||||
|
||||
$deliveredRecords += $maxItems;
|
||||
$restoken = $this->createResumptionToken($deliveredRecords);
|
||||
|
||||
$expirationDatetime = gmstrftime('%Y-%m-%dT%TZ', time()+TOKEN_VALID);
|
||||
|
||||
} elseif (isset($args['resumptionToken'])) {
|
||||
// Last delivery, return empty ResumptionToken
|
||||
$restoken = null;
|
||||
$expirationDatetime = null;
|
||||
}
|
||||
|
||||
if (isset($restoken)) {
|
||||
$this->response->createResumptionToken($restoken,$expirationDatetime,$records_count,$deliveredRecords);
|
||||
}
|
||||
|
||||
} catch (OAI2Exception $e) {
|
||||
$this->errors[] = $e;
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -374,17 +304,17 @@ class OAI2Server {
|
|||
list($usec, $sec) = explode(" ", microtime());
|
||||
$token = ((int)($usec*1000) + (int)($sec*1000));
|
||||
|
||||
$fp = fopen (TOKEN_PREFIX.$token, 'w');
|
||||
if($fp==false) {
|
||||
$fp = fopen ($this->token_prefix.$token, 'w');
|
||||
if($fp==false) {
|
||||
exit("Cannot write. Writer permission needs to be changed.");
|
||||
}
|
||||
fputs($fp, "$delivered_records#");
|
||||
fputs($fp, "$metadataPrefix#");
|
||||
fputs($fp, "{$this->args['from']}#");
|
||||
fputs($fp, "{$this->args['until']}#");
|
||||
fputs($fp, "{$this->args['set']}#");
|
||||
fputs($fp, "$delivered_records#");
|
||||
fputs($fp, "$metadataPrefix#");
|
||||
fputs($fp, "{$this->args['from']}#");
|
||||
fputs($fp, "{$this->args['until']}#");
|
||||
fputs($fp, "{$this->args['set']}#");
|
||||
fclose($fp);
|
||||
return $token;
|
||||
return $token;
|
||||
}
|
||||
|
||||
private function readResumptionToken($resumptionToken) {
|
||||
|
|
@ -393,10 +323,33 @@ class OAI2Server {
|
|||
if ($fp != false) {
|
||||
$filetext = fgets($fp, 255);
|
||||
$textparts = explode('#', $filetext);
|
||||
fclose($fp);
|
||||
fclose($fp);
|
||||
unlink($resumptionToken);
|
||||
$rtVal = array_values($textparts);
|
||||
}
|
||||
return $rtVal;
|
||||
}
|
||||
return $rtVal;
|
||||
}
|
||||
|
||||
/**
|
||||
* All datestamps used in this system are GMT even
|
||||
* return value from database has no TZ information
|
||||
*/
|
||||
private function formatDatestamp($datestamp) {
|
||||
return date("Y-m-d\TH:i:s\Z",strtotime($datestamp));
|
||||
}
|
||||
|
||||
/**
|
||||
* The database uses datastamp without time-zone information.
|
||||
* It needs to clean all time-zone informaion from time string and reformat it
|
||||
*/
|
||||
private function checkDateFormat($date) {
|
||||
$date = str_replace(array("T","Z")," ",$date);
|
||||
$time_val = strtotime($date);
|
||||
if(!$time_val) return false;
|
||||
if(strstr($date,":")) {
|
||||
return date("Y-m-d H:i:s",$time_val);
|
||||
} else {
|
||||
return date("Y-m-d",$time_val);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -27,6 +27,7 @@ class OAI2XMLResponse {
|
|||
function display() {
|
||||
$this->doc->formatOutput = true;
|
||||
$this->doc->preserveWhiteSpace = false;
|
||||
header('Content-Type: text/xml');
|
||||
echo $this->doc->saveXML();
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -1,46 +0,0 @@
|
|||
<?php
|
||||
/**
|
||||
* \file
|
||||
* \brief Utilities for the OAI Data Provider
|
||||
*
|
||||
* A collection of functions used.
|
||||
*/
|
||||
|
||||
/** Validates an identifier. The pattern is: '/^[-a-z\.0-9]+$/i' which means
|
||||
* it accepts -, letters and numbers.
|
||||
* Used only by function <B>oai_error</B> code idDoesNotExist.
|
||||
* \param $url Type: string
|
||||
*/
|
||||
function is_valid_uri($url) {
|
||||
return((bool)preg_match('/^[-a-z\.0-9]+$/i', $url));
|
||||
}
|
||||
|
||||
/** Validates attributes come with the query.
|
||||
* It accepts letters, numbers, ':', '_', '.' and -.
|
||||
* Here there are few more match patterns than is_valid_uri(): ':_'.
|
||||
* \param $attrb Type: string
|
||||
*/
|
||||
function is_valid_attrb($attrb) {
|
||||
return preg_match("/^[_a-zA-Z0-9\-\:\.]+$/",$attrb);
|
||||
}
|
||||
|
||||
/** All datestamps used in this system are GMT even
|
||||
* return value from database has no TZ information
|
||||
*/
|
||||
function formatDatestamp($datestamp) {
|
||||
return date("Y-m-d\TH:i:s\Z",strtotime($datestamp));
|
||||
}
|
||||
|
||||
/** The database uses datastamp without time-zone information.
|
||||
* It needs to clean all time-zone informaion from time string and reformat it
|
||||
*/
|
||||
function checkDateFormat($date) {
|
||||
$date = str_replace(array("T","Z")," ",$date);
|
||||
$time_val = strtotime($date);
|
||||
if(!$time_val) return false;
|
||||
if(strstr($date,":")) {
|
||||
return date("Y-m-d H:i:s",$time_val);
|
||||
} else {
|
||||
return date("Y-m-d",$time_val);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue