From e114e388919e50f3ca5edcab4ef10fdd84297842 Mon Sep 17 00:00:00 2001
From: Roland Haeder <roland@mxchange.org>
Date: Mon, 19 May 2014 22:36:43 +0200
Subject: [PATCH] Introduced isUrlStackEmpty() which overwrites the method in
 BaseSource because isStackInitialized() does currently not work with
 file-based stacks.

Used latest 'core'.

Signed-off-by: Roland Haeder <roland@mxchange.org>
---
 application/hub/main/source/class_BaseUrlSource.php | 13 +++++++++++++
 application/hub/main/source/urls/class_Crawler      |  8 +++++++-
 .../source/urls/class_CrawlerFoundRssUrlSource.php  |  8 +++++++-
 .../urls/class_CrawlerLocalStartUrlSource.php       |  8 +++++++-
 .../source/urls/class_CrawlerRssStartUrlSource.php  |  8 +++++++-
 .../urls/class_CrawlerUploadedListUrlSource.php     |  8 +++++++-
 core                                                |  2 +-
 7 files changed, 49 insertions(+), 6 deletions(-)

diff --git a/application/hub/main/source/class_BaseUrlSource.php b/application/hub/main/source/class_BaseUrlSource.php
index cf8e9b9bd..9e3de5c37 100644
--- a/application/hub/main/source/class_BaseUrlSource.php
+++ b/application/hub/main/source/class_BaseUrlSource.php
@@ -47,6 +47,19 @@ class BaseUrlSource extends BaseSource {
 		// Set the stack here
 		$this->setStackerInstance($stackInstance);
 	}
+
+	/**
+	 * Determines whether the stack 'urls' is empty.
+	 *
+	 * @return	$isEmpty	Whether the stack 'urls' is empty.
+	 */
+	protected function isUrlStackEmpty () {
+		// Determine it
+		$isEmpty = $this->getStackerInstance()->isStackEmpty('urls');
+
+		// Return result
+		return $isEmpty;
+	}
 }
 
 // [EOF]
diff --git a/application/hub/main/source/urls/class_Crawler b/application/hub/main/source/urls/class_Crawler
index b77d4e33e..5ef38a60a 100644
--- a/application/hub/main/source/urls/class_Crawler
+++ b/application/hub/main/source/urls/class_Crawler
@@ -52,9 +52,15 @@ class Crawler???UrlSource extends BaseUrlSource implements UrlSource, Registerab
 	 * Processes entries in the stack.
 	 *
 	 * @return	void
-	 * @todo	0% done
+	 * @todo	~ 10% done
 	 */
 	public function processStack () {
+		// Does the stack have some entries left?
+		if ($this->isUrlStackEmpty()) {
+			// Nothing to handle here
+			return;
+		} // END - if
+
 		$this->partialStub('Please implement this method.');
 	}
 }
diff --git a/application/hub/main/source/urls/class_CrawlerFoundRssUrlSource.php b/application/hub/main/source/urls/class_CrawlerFoundRssUrlSource.php
index 7300b36dc..d77847c2c 100644
--- a/application/hub/main/source/urls/class_CrawlerFoundRssUrlSource.php
+++ b/application/hub/main/source/urls/class_CrawlerFoundRssUrlSource.php
@@ -52,9 +52,15 @@ class CrawlerFoundRssUrlSource extends BaseUrlSource implements UrlSource, Regis
 	 * Processes entries in the stack.
 	 *
 	 * @return	void
-	 * @todo	0% done
+	 * @todo	~10% done
 	 */
 	public function processStack () {
+		// Does the stack have some entries left?
+		if ($this->isUrlStackEmpty()) {
+			// Nothing to handle here
+			return;
+		} // END - if
+
 		$this->partialStub('Please implement this method.');
 	}
 }
diff --git a/application/hub/main/source/urls/class_CrawlerLocalStartUrlSource.php b/application/hub/main/source/urls/class_CrawlerLocalStartUrlSource.php
index f84bdc147..a2679ebdb 100644
--- a/application/hub/main/source/urls/class_CrawlerLocalStartUrlSource.php
+++ b/application/hub/main/source/urls/class_CrawlerLocalStartUrlSource.php
@@ -52,9 +52,15 @@ class CrawlerLocalStartUrlSource extends BaseUrlSource implements UrlSource, Reg
 	 * Processes entries in the stack.
 	 *
 	 * @return	void
-	 * @todo	0% done
+	 * @todo	~10% done
 	 */
 	public function processStack () {
+		// Does the stack have some entries left?
+		if ($this->isUrlStackEmpty()) {
+			// Nothing to handle here
+			return;
+		} // END - if
+
 		$this->partialStub('Please implement this method.');
 	}
 }
diff --git a/application/hub/main/source/urls/class_CrawlerRssStartUrlSource.php b/application/hub/main/source/urls/class_CrawlerRssStartUrlSource.php
index e53ef143e..e955d027f 100644
--- a/application/hub/main/source/urls/class_CrawlerRssStartUrlSource.php
+++ b/application/hub/main/source/urls/class_CrawlerRssStartUrlSource.php
@@ -52,9 +52,15 @@ class CrawlerRssStartUrlSource extends BaseUrlSource implements UrlSource, Regis
 	 * Processes entries in the stack.
 	 *
 	 * @return	void
-	 * @todo	0% done
+	 * @todo	~10% done
 	 */
 	public function processStack () {
+		// Does the stack have some entries left?
+		if ($this->isUrlStackEmpty()) {
+			// Nothing to handle here
+			return;
+		} // END - if
+
 		$this->partialStub('Please implement this method.');
 	}
 }
diff --git a/application/hub/main/source/urls/class_CrawlerUploadedListUrlSource.php b/application/hub/main/source/urls/class_CrawlerUploadedListUrlSource.php
index 90415e019..0c7dd6055 100644
--- a/application/hub/main/source/urls/class_CrawlerUploadedListUrlSource.php
+++ b/application/hub/main/source/urls/class_CrawlerUploadedListUrlSource.php
@@ -52,9 +52,15 @@ class CrawlerUploadedListUrlSource extends BaseUrlSource implements UrlSource, R
 	 * Processes entries in the stack.
 	 *
 	 * @return	void
-	 * @todo	0% done
+	 * @todo	~10% done
 	 */
 	public function processStack () {
+		// Does the stack have some entries left?
+		if ($this->isUrlStackEmpty()) {
+			// Nothing to handle here
+			return;
+		} // END - if
+
 		$this->partialStub('Please implement this method.');
 	}
 }
diff --git a/core b/core
index e947d4d08..5d0255415 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit e947d4d080c0780f1573344736abd2699e2e462a
+Subproject commit 5d02554156f746355bf6863924b38b784569be24
-- 
2.39.5