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git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5387 6c8d7289-2bf4-0310-a012-ef5d649a1542
77 lines
2.6 KiB
Java
77 lines
2.6 KiB
Java
// kelondroRA.java
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// -----------------------
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// part of The Kelondro Database
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// (C) by Michael Peter Christen; mc@yacy.net
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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// last major change: 09.02.2004
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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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The random access interface for the kelondro database.
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kelondro stores data always through the kelondroRecords class,
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which in turn also needs a random access file or similar
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to store the database structure. To provide more than
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ony file - random-access, we need an abstract interface.
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*/
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package de.anomic.kelondro;
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import java.io.File;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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public interface kelondroRA {
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// logging support
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public String name();
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public File file();
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// pseudo-native methods:
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public long length() throws IOException;
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public void setLength(long length) throws IOException;
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public long available() throws IOException;
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public void readFully(byte[] b, int off, int len) throws IOException;
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public void write(byte[] b, int off, int len) throws IOException;
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public void seek(long pos) throws IOException;
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public void close() throws IOException;
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// derived methods:
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public byte[] readFully() throws IOException;
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public short readShort() throws IOException;
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public void writeShort(int v) throws IOException;
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public int readInt() throws IOException;
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public void writeInt(int v) throws IOException;
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public long readLong() throws IOException;
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public void writeLong(long v) throws IOException;
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public void write(byte[] b) throws IOException;
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public void writeLine(String line) throws IOException;
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public void writeMap(Map<String, String> props, String comment) throws IOException;
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public HashMap<String, String> readMap() throws IOException;
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public void deleteOnExit();
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}
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