+
−/*
+
− * This Source Code Form is subject to the terms of the Mozilla Public
+
− * License, v. 2.0.  If a copy of the MPL was not distributed with this
+
− * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
− *
+
− * Copyright 2016 MonetDB B.V.
+
− */
+
−
+
−package nl.cwi.monetdb.embedded.env;
+
−
+
−/**
+
− * The MonetDB's JNI library loader for Java.
+
− * <br/>
+
− * <strong>Note</strong>: The MonetDB's JNI library must be successfully loaded in order to the other methods work.
+
− *
+
− * @author <a href="mailto:pedro.ferreira@monetdbsolutions.com">Pedro Ferreira</a>
+
− */
+
−public class MonetDBEmbeddedInstance {
+
−
+
−    private static boolean isEmbeddedInstanceInitialized = false;
+
−
+
−    private static final String NATIVE_LIB_NAME = "monetdb5";
+
−
+
−    /**
+
−     * Tries to load the JNI library with MonetDBLite from the current Java Classpath.
+
−     *
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−     * @param libraryName The library name, if null will load the default name "monetdb5"
+
−     * @return A boolean indicating if the load was successful
+
−     */
+
−    public static boolean TryLoadEmbeddedInstanceFromName(String libraryName) {
+
−        if(!isEmbeddedInstanceInitialized) {
+
−            if(libraryName == null) {
+
−                libraryName = NATIVE_LIB_NAME;
+
−            }
+
−            System.loadLibrary(libraryName);
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−            isEmbeddedInstanceInitialized = true;
+
−        }
+
−        return true;
+
−    }
+
−
+
−    /**
+
−     * Tries to load the JNI library with MonetDBLite from the given path.
+
−     *
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−     * @param libraryPath The full library path name
+
−     * @return A boolean indicating if the load was successful
+
−     */
+
−    public static boolean TryLoadEmbeddedInstanceFromPath(String libraryPath) {
+
−        if(!isEmbeddedInstanceInitialized) {
+
−            if(libraryPath == null) {
+
−                System.load(NATIVE_LIB_NAME);
+
−            }
+
−            System.load(libraryPath);
+
−            isEmbeddedInstanceInitialized = true;
+
−        }
+
−        return true;
+
−    }
+
−
+
−    /**
+
−     * Check if the JNI library with MonetDBLite has been loaded yet or not.
+
−     *
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−     * @return A boolean indicating if it is loaded
+
−     */
+
−    public static boolean IsEmbeddedInstanceInitialized() {
+
−        return isEmbeddedInstanceInitialized;
+
−    }
+
−}