Example usage for java.util.function Predicate test

Introduction

In this page you can find the example usage for java.util.function Predicate test.

Prototype

boolean test(T t);

Source Link

Document

Evaluates this predicate on the given argument.

Usage

From source file:org.apache.accumulo.core.conf.PropertyType.java

private static Predicate<String> boundedUnits(final long lowerBound, final long upperBound,
        final boolean caseSensitive, final String... suffixes) {
    Predicate<String> suffixCheck = new HasSuffix(caseSensitive, suffixes);
    return x -> x == null
            || (suffixCheck.test(x) && new Bounds(lowerBound, upperBound).test(stripUnits.apply(x)));
}

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From source file:ambroafb.general.AnnotiationUtils.java

private static boolean getPredicateValue(Class predicateClass, String fieldName) {
    try {//  w  ww  .  j a v a2s  .co m
        if (predicateClass != Annotations.ContentNotEmpty.DEFAULT.class) {
            Predicate<String> p = (Predicate<String>) predicateClass.getConstructor().newInstance();
            return p.test(fieldName);
        }
    } catch (NoSuchMethodException | SecurityException | InstantiationException | IllegalAccessException
            | IllegalArgumentException | InvocationTargetException ex) {
        Logger.getLogger(Utils.class.getName()).log(Level.SEVERE, null, ex);
    }
    return true;
}

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From source file:Main.java

@Nullable
public static <ELEMENTTYPE> ELEMENTTYPE getAtIndex(@Nullable final Iterable<? extends ELEMENTTYPE> aCollection,
        @Nullable final Predicate<? super ELEMENTTYPE> aFilter, @Nonnegative final int nIndex,
        @Nullable final ELEMENTTYPE aDefault) {
    if (aFilter == null)
        return getAtIndex(aCollection, nIndex, aDefault);

    if (nIndex >= 0) {
        int nCurIndex = 0;
        for (final ELEMENTTYPE aElement : aCollection)
            if (aFilter.test(aElement)) {
                if (nCurIndex == nIndex)
                    return aElement;
                ++nCurIndex;/*from ww  w  . ja va  2  s . co m*/
            }
    }
    return aDefault;
}

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From source file:org.opensingular.form.SFormUtil.java

/**
 * Retorna o nome do filho atual indo em direo ao raiz mas parando segundo
 * a condico de parada informada.// w  ww. j a  v  a 2 s.  c o  m
 */
public static String generatePath(SInstance instance, Predicate<SInstance> stopCondition) {
    SInstance current = instance;
    List<SInstance> sequencia = null;
    while (!stopCondition.test(current)) {
        if (sequencia == null) {
            sequencia = new ArrayList<>();
        }
        sequencia.add(current);
        current = current.getParent();
    }
    if (sequencia == null) {
        return null;
    }
    StringBuilder sb = new StringBuilder();
    for (int i = sequencia.size() - 1; i != -1; i--) {
        current = sequencia.get(i);
        if (current.getParent() instanceof SIList) {
            int pos = ((SIList<?>) current.getParent()).indexOf(current);
            if (pos == -1) {
                throw new SingularFormException(
                        current.getName() + " no  mais filho de " + current.getParent().getName());
            }
            sb.append('[').append(pos).append(']');
        } else {
            if (current.getParent() != null && sb.length() != 0) {
                sb.append('.');
            }
            sb.append(current.getName());
        }
    }
    return sb.toString();
}

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From source file:de.bluepair.sci.client.SHAUtils.java

public static <T> Map<String, String> sha512(Path path, Predicate<T> gard, T testValue, long blockSizePref,
        boolean forceBlockSize) {

    if (Files.notExists(path)) {
        return null;
    }/*from  ww w.  ja v a  2s  .  co m*/
    MessageDigest md = getDigest();
    MessageDigest md1 = getDigest();

    if (!gard.test(testValue)) {
        return null;
    }
    long blockSize = blockSizePref;
    long size = -1;
    try {
        size = Files.size(path);
        if (!forceBlockSize) {// maximal 10 hashsummen
            // sonst hab ich zu viele in der datei
            // stehen!
            while (size / blockSize > 10) {
                blockSize += blockSizePref;
            }
        }

    } catch (IOException e) {
        blockSize = blockSizePref;
        return null;
    }

    Map<String, String> map = new HashMap<>();

    long lastStart = 0;

    long stepDown = blockSize;

    try (final SeekableByteChannel fileChannel = Files.newByteChannel(path, StandardOpenOption.READ);) {

        final ByteBuffer buffer = ByteBuffer.allocateDirect(8192);
        int last;
        do {
            if (!gard.test(testValue) || Files.notExists(path)) {
                return null;
            }
            buffer.clear();
            last = fileChannel.read(buffer);

            buffer.flip();
            md.update(buffer);

            // calc 2checksups
            buffer.flip();
            md1.update(buffer);

            if (last > 0) {
                stepDown -= last;
            }

            // wenn ich ein 100mb netzwerk habe
            // ~ca. 5MB bertragung
            // also bei abbruch kann wiederaufgesetzt werden wenn die summen
            // bekannt sind.
            // ~hnlich Blcke berechen also
            // 0-5 c1
            // 0-10 c2
            // 5-10 c3 ...

            if (stepDown <= 0 || (last <= 0)) {
                long len = (blockSize + Math.abs(stepDown));
                if (stepDown > 0) {
                    // kottektur wenn last <0
                    len = blockSize - stepDown;
                }
                stepDown = blockSize;
                map.put("sha512_" + lastStart + "_" + len, Hex.encodeHexString(md1.digest()));
                lastStart += len;
                md1.reset();
            }

        } while (last > 0);

    } catch (IOException ex) {
        Logger.getLogger(FileAnalysis.class.getName()).log(Level.SEVERE, null, ex);
        return null;
    }

    final byte[] sha1hash = md.digest();
    map.put("sha512", Hex.encodeHexString(sha1hash));
    return map;

}

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From source file:fr.landel.utils.commons.exception.ExceptionUtils.java

/**
 * Throws an exception if the predicate doesn't match
 * /* w  w  w  .j a  v  a  2s.c  o  m*/
 * <pre>
 * String key = "test";
 * // ...
 * ExceptionUtils.throwsException(key, StringUils::isNotEmpty, IllegalArgumentException::new, null, "error on key");
 * </pre>
 * 
 * @param object
 *            the object to check
 * @param predicate
 *            the predicate that validates the object
 * @param supplier
 *            the exception supplier
 * @param locale
 *            the message locale (optional)
 * @param message
 *            the error message (required)
 * @param arguments
 *            the message arguments
 * @param <T>
 *            the object type
 * @param <E>
 *            the exception type
 * @throws E
 *             if predicate doesn't match
 */
public static <T, E extends Throwable> void throwsException(final T object, final Predicate<T> predicate,
        final Function<String, E> supplier, final Locale locale, final String message,
        final Object... arguments) throws E {
    Objects.requireNonNull(predicate, "predicate");
    Objects.requireNonNull(supplier, "supplier");
    Objects.requireNonNull(message, "message");

    if (!predicate.test(object)) {
        throw supplier.apply(StringUtils.format(locale, message, new Object[] { object }, arguments));
    }
}

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From source file:org.briljantframework.data.Collectors.java

/**
 * Returns an aggregator that filter values.
 *
 * @param supplier the vector builder/*from  w  w  w .j  av  a 2  s . c om*/
 * @param predicate the predicate. If {@code true} include value.
 * @param <T> the input type
 * @return a filtering aggregator
 */
public static <T> Collector<T, ?, Vector> filter(Supplier<Vector.Builder> supplier, Predicate<T> predicate) {
    return Collector.of(supplier, (acc, v) -> {
        if (predicate.test(v)) {
            acc.add(v);
        }
    }, (Vector.Builder left, Vector.Builder right) -> {
        left.addAll(right);
        return left;
    }, Vector.Builder::build);
}

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From source file:io.github.jeddict.jcode.util.StringHelper.java

public static String getNext(String name, Predicate<String> checkExist, boolean increment) {
    int index = 0;
    String nextName;/*from   w ww.j  av a 2 s .c om*/
    if (increment) {
        nextName = name + ++index;
    } else {
        nextName = name;
    }
    boolean isExist = true;
    while (isExist) {
        if (checkExist.test(nextName)) {
            isExist = true;
            nextName = name + ++index;
        } else {
            return nextName;
        }
    }
    return nextName;
}

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From source file:org.diorite.config.impl.actions.ActionsRegistry.java

@Nullable
public static Pair<ConfigPropertyAction, ActionMatcherResult> findMethod(Method method,
        Predicate<String> propertyNameChecker) {
    Pair<ConfigPropertyAction, ActionMatcherResult> lastMatching = null;
    for (ConfigPropertyActionEntry actionEntry : actions) {
        ConfigPropertyAction action = actionEntry.action;
        ActionMatcherResult actionMatcherResult = action.matchesAction(method);
        if (actionMatcherResult.isMatching()) {
            actionMatcherResult.setValidatedName(action.declaresProperty()
                    || propertyNameChecker.test(actionMatcherResult.getPropertyName()));
            lastMatching = new ImmutablePair<>(action, actionMatcherResult);
            if (actionMatcherResult.isValidatedName()) {
                return lastMatching;
            }/*from  ww  w.j a  va  2 s .co  m*/
        }
    }
    return lastMatching;
}

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From source file:org.apache.accumulo.core.client.impl.ClientContext.java

/**
 * A utility method for converting client configuration to a standard configuration object for use internally.
 *
 * @param config/*from   w ww. ja  va2 s.c  om*/
 *          the original {@link ClientConfiguration}
 * @return the client configuration presented in the form of an {@link AccumuloConfiguration}
 */
public static AccumuloConfiguration convertClientConfig(final Configuration config) {

    final AccumuloConfiguration defaults = DefaultConfiguration.getInstance();

    return new AccumuloConfiguration() {
        @Override
        public String get(Property property) {
            final String key = property.getKey();

            // Attempt to load sensitive properties from a CredentialProvider, if configured
            if (property.isSensitive()) {
                org.apache.hadoop.conf.Configuration hadoopConf = getHadoopConfiguration();
                if (null != hadoopConf) {
                    try {
                        char[] value = CredentialProviderFactoryShim.getValueFromCredentialProvider(hadoopConf,
                                key);
                        if (null != value) {
                            log.trace("Loaded sensitive value for {} from CredentialProvider", key);
                            return new String(value);
                        } else {
                            log.trace(
                                    "Tried to load sensitive value for {} from CredentialProvider, but none was found",
                                    key);
                        }
                    } catch (IOException e) {
                        log.warn(
                                "Failed to extract sensitive property ({}) from Hadoop CredentialProvider, falling back to base AccumuloConfiguration",
                                key, e);
                    }
                }
            }

            if (config.containsKey(key))
                return config.getString(key);
            else {
                // Reconstitute the server kerberos property from the client config
                if (Property.GENERAL_KERBEROS_PRINCIPAL == property) {
                    if (config.containsKey(ClientProperty.KERBEROS_SERVER_PRIMARY.getKey())) {
                        // Avoid providing a realm since we don't know what it is...
                        return config.getString(ClientProperty.KERBEROS_SERVER_PRIMARY.getKey()) + "/_HOST@"
                                + SaslConnectionParams.getDefaultRealm();
                    }
                }
                return defaults.get(property);
            }
        }

        @Override
        public void getProperties(Map<String, String> props, Predicate<String> filter) {
            defaults.getProperties(props, filter);

            Iterator<?> keyIter = config.getKeys();
            while (keyIter.hasNext()) {
                String key = keyIter.next().toString();
                if (filter.test(key))
                    props.put(key, config.getString(key));
            }

            // Two client props that don't exist on the server config. Client doesn't need to know about the Kerberos instance from the principle, but servers do
            // Automatically reconstruct the server property when converting a client config.
            if (props.containsKey(ClientProperty.KERBEROS_SERVER_PRIMARY.getKey())) {
                final String serverPrimary = props.remove(ClientProperty.KERBEROS_SERVER_PRIMARY.getKey());
                if (filter.test(Property.GENERAL_KERBEROS_PRINCIPAL.getKey())) {
                    // Use the _HOST expansion. It should be unnecessary in "client land".
                    props.put(Property.GENERAL_KERBEROS_PRINCIPAL.getKey(),
                            serverPrimary + "/_HOST@" + SaslConnectionParams.getDefaultRealm());
                }
            }

            // Attempt to load sensitive properties from a CredentialProvider, if configured
            org.apache.hadoop.conf.Configuration hadoopConf = getHadoopConfiguration();
            if (null != hadoopConf) {
                try {
                    for (String key : CredentialProviderFactoryShim.getKeys(hadoopConf)) {
                        if (!Property.isValidPropertyKey(key) || !Property.isSensitive(key)) {
                            continue;
                        }

                        if (filter.test(key)) {
                            char[] value = CredentialProviderFactoryShim
                                    .getValueFromCredentialProvider(hadoopConf, key);
                            if (null != value) {
                                props.put(key, new String(value));
                            }
                        }
                    }
                } catch (IOException e) {
                    log.warn(
                            "Failed to extract sensitive properties from Hadoop CredentialProvider, falling back to accumulo-site.xml",
                            e);
                }
            }
        }

        private org.apache.hadoop.conf.Configuration getHadoopConfiguration() {
            String credProviderPaths = config
                    .getString(Property.GENERAL_SECURITY_CREDENTIAL_PROVIDER_PATHS.getKey());
            if (null != credProviderPaths && !credProviderPaths.isEmpty()) {
                org.apache.hadoop.conf.Configuration hadoopConf = new org.apache.hadoop.conf.Configuration();
                hadoopConf.set(CredentialProviderFactoryShim.CREDENTIAL_PROVIDER_PATH, credProviderPaths);
                return hadoopConf;
            }

            log.trace("Did not find credential provider configuration in ClientConfiguration");

            return null;
        }
    };

}

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