io.permazen.kv.simple.MemoryKVImplementation Maven / Gradle / Ivy

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A couple of simplistic Permazen key/value store implementations.

There is a newer version: 5.1.0


/*
 * Copyright (C) 2015 Archie L. Cobbs. All rights reserved.
 */

package io.permazen.kv.simple;

import io.permazen.kv.KVDatabase;
import io.permazen.kv.KVImplementation;
import io.permazen.kv.mvcc.AtomicKVStore;

import java.util.ArrayDeque;
import java.util.Iterator;

public class MemoryKVImplementation extends KVImplementation {

    @Override
    public String[][] getCommandLineOptions() {
        return new String[][] {
            { "--mem", "Use an initially empty, in-memory database" }
        };
    }

    @Override
    public Object parseCommandLineOptions(ArrayDeque options) {
        Object config = null;
        for (Iterator i = options.iterator(); i.hasNext(); ) {
            final String option = i.next();
            if (option.equals("--mem")) {
                config = Boolean.TRUE;
                i.remove();
            }
        }
        return config;
    }

    @Override
    public SimpleKVDatabase createKVDatabase(Object configuration, KVDatabase kvdb, AtomicKVStore kvstore) {
        return new SimpleKVDatabase();
    }

    @Override
    public String getDescription(Object configuration) {
        return "Memory database";
    }
}