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)

Source Link

Document

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

Usage

From source file:com.onboard.service.account.redis.KeyUtils.java

public static String userToken(String type, Integer uid) {
    Preconditions.checkNotNull(type);
    Preconditions.checkNotNull(uid);/*ww w.j a v  a 2s  .c  om*/
    return String.format("account:%s:%d", type, uid);
}

From source file:com.sk89q.guavabackport.cache.RemovalListeners.java

public static <K, V> RemovalListener<K, V> asynchronous(final RemovalListener<K, V> listener,
        final Executor executor) {
    Preconditions.checkNotNull((Object) listener);
    Preconditions.checkNotNull((Object) executor);
    return new RemovalListener<K, V>() {
        @Override//from w w  w . j a  v a  2 s  .co m
        public void onRemoval(final RemovalNotification<K, V> notification) {
            executor.execute(new Runnable() {
                @Override
                public void run() {
                    listener.onRemoval(notification);
                }
            });
        }
    };
}

From source file:edu.byu.nlp.math.optimize.ConvergenceCheckers.java

public static ConvergenceChecker or(final ConvergenceChecker a, final ConvergenceChecker b) {
    Preconditions.checkNotNull(a);
    Preconditions.checkNotNull(b);//from  w ww  .j  a  v a2  s  .  co  m
    return new ConvergenceChecker() {

        @Override
        public boolean isConverged(int iteration, double prev, double cur) {
            return a.isConverged(iteration, prev, cur) || b.isConverged(iteration, prev, cur);
        }

    };
}

From source file:com.visural.common.collection.FluentLists.java

public static <T> List<T> set(List<T> list, int index, T element) {
    Preconditions.checkNotNull(list);
    index = basicAdjustIndex(index, list);
    list.set(index, element);//w  w w  .  java2  s .c  o  m
    return list;
}

From source file:com.kamesuta.mc.signpic.asm.lib.VisitorHelper.java

public static byte[] apply(final byte[] bytes, final String name, final TransformProvider context) {
    Preconditions.checkNotNull(bytes);
    final ClassReader cr = new ClassReader(bytes);
    final ClassWriter cw = new ClassWriter(cr, context.flags);
    final ClassVisitor mod = context.createVisitor(name, cw);

    try {/*from w w w  .  j  a  v a2s . co m*/
        cr.accept(mod, 0);
        return cw.toByteArray();
    } catch (final StopTransforming e) {
        return bytes;
    }
}

From source file:aeon.compiler.generators.CodeBlocks.java

public static CodeBlock checkNotNull(@NotNull final String varName) {
    Preconditions.checkNotNull(varName);

    return CodeBlock.builder().addStatement("$T.$L($L)", Utils.class, "checkNotNull", varName).build();
}

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

static CSVWriter create(PrintWriter printer, char separator) {
    Preconditions.checkNotNull(printer);
    return new CSVWriter(printer, separator);
}

From source file:com.turn.splicer.tsdbutils.expression.Expressions.java

public static ExpressionTree parse(String expr, List<String> metricQueries, TsQuery dataQuery) {
    Preconditions.checkNotNull(expr);
    if (expr.indexOf('(') == -1 || expr.indexOf(')') == -1) {
        throw new RuntimeException("Invalid Expression: " + expr);
    }//from w w  w  . j  a v a  2s .  c  om

    ExprReader reader = new ExprReader(expr.toCharArray());
    reader.skipWhitespaces();

    String funcName = reader.readFuncName();
    Expression rootExpr = ExpressionFactory.getByName(funcName);
    if (rootExpr == null) {
        throw new RuntimeException("Could not find evaluator " + "for function '" + funcName + "'");
    }

    ExpressionTree root = new ExpressionTree(rootExpr, dataQuery);

    reader.skipWhitespaces();
    if (reader.peek() == '(') {
        reader.next();
        parse(reader, metricQueries, root, dataQuery);
    }

    return root;
}

From source file:org.mifos.sdk.internal.ParseUtil.java

/**
 * Parses a date to a particular format and returns the formatted {@link String}.
 * @param date the {@link Date} to parse
 * @param dateFormat the date format//w w w.j a v a2  s . c o  m
 * @param lang the language/locale
 * @return a date {@link String} formatted according to the date format and locale
 */
public static String parseDateToString(final Date date, final String dateFormat, final String lang) {
    Preconditions.checkNotNull(date);
    Preconditions.checkNotNull(dateFormat);
    Preconditions.checkNotNull(lang);

    final Locale locale = new Locale(lang);
    final SimpleDateFormat format = new SimpleDateFormat(dateFormat, locale);

    return format.format(date);
}

From source file:com.twitter.hbc.twitter4j.CreateEvent.java

public static JSONObject createEvent(String eventName, String target, String source,
        @Nullable String targetObject) throws JSONException {

    Preconditions.checkNotNull(eventName);
    Preconditions.checkNotNull(target);/*from  w w  w.  j a  va 2 s  .  c om*/
    Preconditions.checkNotNull(source);
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("event", eventName);
    map.put("target", new JSONObject(target));
    map.put("source", new JSONObject(source));
    if (targetObject != null) {
        map.put("target_object", new JSONObject(targetObject));
    }
    return new JSONObject(map);
}