Example usage for com.google.common.base Preconditions checkNotNull

Introduction

In this page you can find the example usage for com.google.common.base Preconditions checkNotNull.

Prototype

public static <T> T checkNotNull(T reference, @Nullable Object errorMessage)

Source Link

Document

Ensures that an object reference passed as a parameter to the calling method is not null.

Usage

From source file:org.terasology.monitoring.chunk.ChunkMonitor.java

private static synchronized ChunkMonitorEntry registerChunk(Chunk chunk) {
    Preconditions.checkNotNull(chunk, "The parameter 'chunk' must not be null");
    final Vector3i pos = chunk.getPosition();
    ChunkMonitorEntry entry = CHUNKS.get(pos);
    if (entry == null) {
        entry = new ChunkMonitorEntry(pos);
        CHUNKS.put(pos, entry);/*from   w  w w.  j  a v a2 s .c  om*/
    }
    entry.addChunk(chunk);
    return entry;
}

From source file:com.jivesoftware.os.amza.api.wal.WALKey.java

public static byte[] compose(byte[] prefix, byte[] key) {
    Preconditions.checkNotNull(key, "Key cannot be null");

    int prefixLength = prefix != null ? prefix.length : 0;
    Preconditions.checkArgument(prefixLength <= Short.MAX_VALUE, "Max prefix length is 32767");

    byte[] pk = new byte[2 + prefixLength + key.length];
    UIO.shortBytes((short) prefixLength, pk, 0);
    if (prefix != null) {
        System.arraycopy(prefix, 0, pk, 2, prefixLength);
    }//from  ww w . j  a v a 2s  . c o m
    System.arraycopy(key, 0, pk, 2 + prefixLength, key.length);
    return pk;
}

From source file:eu.thebluemountain.customers.dctm.brownbag.badcontentslister.db.JDBCConnection.java

/**
 * The method that create a JDBC connection from a connection and a
 * (default) schema.//from  w  w w  . j av a2 s.  com
 *
 * <p>The method resets the auto-commit to {@code false}</p>
 * @param cnx is an (opened) connection
 * @param schema is the default schema
 * @return the matching JDBC connection
 * @throws SQLException can be thrown while resetting auto commit
 */
public static JDBCConnection create(Connection cnx, String schema) throws SQLException {
    Preconditions.checkNotNull(cnx, "null connection supplied");
    Preconditions.checkNotNull(schema, "null schema supplied");
    cnx.setAutoCommit(false);
    return new JDBCConnection(cnx, schema);
}

From source file:org.apache.james.jmap.api.vacation.RecipientId.java

public static RecipientId fromMailAddress(MailAddress mailAddress) {
    Preconditions.checkNotNull(mailAddress, "RecipientId mailAddress should not be null");
    return new RecipientId(mailAddress);
}

From source file:io.fabric8.jube.process.support.FileUtils.java

public static void extractArchive(File archiveFile, File targetDirectory, String extractCommand,
        Duration timeLimit, Executor executor) throws CommandFailedException {
    Preconditions.checkNotNull(archiveFile, "archiveFile is null");
    Preconditions.checkNotNull(targetDirectory, "targetDirectory is null");
    Preconditions.checkArgument(targetDirectory.isDirectory(),
            "targetDirectory is not a directory: " + targetDirectory.getAbsolutePath());

    final String[] commands = splitCommands(extractCommand);
    final String[] args = Arrays.copyOf(commands, commands.length + 1);
    args[args.length - 1] = archiveFile.getAbsolutePath();
    LOG.info("Extracting archive with commands: " + Arrays.asList(args));

    new Command(args).setDirectory(targetDirectory).setTimeLimit(timeLimit).execute(executor);
}

From source file:com.zaradai.kunzite.trader.events.MarketData.java

public static MarketData newInstance(String instrumentId, DateTime timestamp, List<MarketDataField> fields) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(instrumentId), "Invalid Instrument");
    Preconditions.checkNotNull(timestamp, "Invalid timestamp");
    Preconditions.checkNotNull(fields, "Invalid fields specified");

    return new MarketData(instrumentId, timestamp, fields);
}

From source file:net.awired.visuwall.plugin.jenkins.States.java

public static final State asVisuwallState(String jenkinsState) {
    Preconditions.checkNotNull(jenkinsState, "jenkinsState is mandatory");
    jenkinsState = jenkinsState.toLowerCase();
    State state = STATE_MAPPING.get(jenkinsState);
    if (state == null) {
        state = State.UNKNOWN;
        LOG.warn(jenkinsState + " is not available in Jenkins plugin. Please report it to Visuwall dev team.");
    }/*w w w  .  j av a  2s .c  om*/
    return state;
}

From source file:com.google.security.zynamics.zylib.general.ClipboardHelpers.java

/**
 * Copies a string to the system clipboard.
 *
 * @param string The string to be copied to the system clipboard.
 *//*from   w  w w  .  j  ava  2  s . co  m*/
public static void copyToClipboard(final String string) {
    Preconditions.checkNotNull(string, "Error: String argument can not be null");

    final Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();

    clipboard.setContents(new StringSelection(string), new ClipboardOwner() {
        @Override
        public void lostOwnership(final Clipboard clipboard, final Transferable contents) {
        }
    });
}

From source file:com.google.security.zynamics.binnavi.ZyGraph.Implementations.CEdgeFunctions.java

/**
 * Shows the dialog for editing edge comments.
 *
 * @param parent Parent window used for dialogs.
 * @param edge The edge whose comments are edited.
 *//*from  ww w.j a  v  a 2s .c om*/
public static void editEdgeComments(final JFrame parent, final NaviEdge edge) {
    Preconditions.checkNotNull(parent, "IE02115: Parent argument can not be null");
    Preconditions.checkNotNull(edge, "IE02116: Edge argument can not be null");

    final CDialogEditEdgeComment dlg = new CDialogEditEdgeComment(parent, edge.getRawEdge());

    GuiHelper.centerChildToParent(parent, dlg, true);

    dlg.setVisible(true);
}

From source file:io.kazuki.v0.store.index.SecondaryIndexQueryValidation.java

public static void validateQuery(String indexName, List<QueryTerm> query, Schema schema) {
    Preconditions.checkNotNull(query, "query");
    Preconditions.checkNotNull(schema, "schema");

    IndexDefinition indexDef = schema.getIndex(indexName);
    Preconditions.checkNotNull(indexDef, "index");

    boolean containsFirst = false;
    boolean allEquality = true;

    Set<String> seenCols = new HashSet<String>();
    String firstIndexCol = indexDef.getAttributeNames().get(0);

    for (QueryTerm term : query) {
        String attrName = term.getField();

        Attribute existsSchema = schema.getAttribute(attrName);

        if (existsSchema == null) {
            throw new IllegalArgumentException("unknown schema attribute: " + attrName);
        }//  ww  w.  ja  v a2  s.  c om

        IndexAttribute existsIndex = indexDef.getIndexAttribute(attrName);
        if (existsIndex == null) {
            throw new IllegalArgumentException("unknown index attribute: " + attrName);
        }

        containsFirst = containsFirst || attrName.equals(firstIndexCol);
        allEquality = allEquality && term.getOperator().equals(QueryOperator.EQ);

        seenCols.add(attrName);
    }

    if (!containsFirst) {
        throw new IllegalArgumentException("query must contain first index attribute: " + firstIndexCol);
    }

    if (indexDef.isUnique()) {
        boolean containsAll = (seenCols.size() == indexDef.getIndexAttributeMap().size());

        if (!containsAll) {
            throw new IllegalArgumentException("unique index query must contain all index attributes");
        }

        if (!allEquality) {
            throw new IllegalArgumentException("unique index query must use equality operator only");
        }
    }
}