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91 lines
3.8 KiB
91 lines
3.8 KiB
// plasmaURLPool.java
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// -----------------------
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// part of YaCy
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2005
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// last major change: 16.06.2005
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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// this class combines all url storage methods into one. It is the host for all url storage
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package de.anomic.plasma;
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import java.net.URL;
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import java.io.File;
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import java.io.IOException;
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public class plasmaURLPool {
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public final plasmaCrawlLURL loadedURL;
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public final plasmaCrawlNURL noticeURL;
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public final plasmaCrawlEURL errorURL;
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public plasmaURLPool(File plasmaPath, int ramLURL, int ramNURL, int ramEURL) throws IOException {
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loadedURL = new plasmaCrawlLURL(new File(plasmaPath, "urlHash.db"), ramLURL);
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noticeURL = new plasmaCrawlNURL(plasmaPath, ramNURL);
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errorURL = new plasmaCrawlEURL(new File(plasmaPath, "urlErr0.db"), ramEURL);
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}
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public String exists(String hash) {
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// tests if hash occurrs in any database
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// if it exists, the name of the database is returned,
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// if it not exists, null is returned
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if (loadedURL.exists(hash)) return "loaded";
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if (noticeURL.existsInStack(hash)) return "crawler";
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if (errorURL.exists(hash)) return "errors";
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return null;
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}
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public URL getURL(String urlhash) {
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if (urlhash.equals(plasmaURL.dummyHash)) return null;
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plasmaCrawlNURL.Entry ne = noticeURL.getEntry(urlhash);
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if (ne != null) return ne.url();
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plasmaCrawlLURL.Entry le = loadedURL.getEntry(urlhash);
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if (le != null) return le.url();
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plasmaCrawlEURL.Entry ee = errorURL.getEntry(urlhash);
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if (ee != null) return ee.url();
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return null;
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}
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public void close() throws IOException {
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loadedURL.close();
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noticeURL.close();
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errorURL.close();
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}
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}
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