Example usage for com.google.common.collect Iterators transform

Introduction

In this page you can find the example usage for com.google.common.collect Iterators transform.

Prototype

public static <F, T> Iterator<T> transform(final Iterator<F> fromIterator,
        final Function<? super F, ? extends T> function)

Source Link

Document

Returns an iterator that applies function to each element of fromIterator .

Usage

From source file:org.eclipse.rdf4j.spin.function.spif.SingleValueToListTransformer.java

@SuppressWarnings("unchecked")
static <E> Iterator<List<? extends E>> transform(Iterator<E> iter) {
    return Iterators.transform(iter, (SingleValueToListTransformer<E>) INSTANCE);
}

From source file:co.cask.common.internal.asm.Methods.java

public static Method getMethod(Class<?> returnType, String name, Class<?>... args) {
    StringBuilder builder = new StringBuilder(returnType.getName()).append(' ').append(name).append(" (");
    Joiner.on(',').appendTo(builder,
            Iterators.transform(Iterators.forArray(args), new Function<Class<?>, String>() {
                @Override//from  w w w . j ava  2  s  .  c o  m
                public String apply(Class<?> input) {
                    if (input.isArray()) {
                        return Type.getType(input.getName()).getClassName();
                    }
                    return input.getName();
                }
            }));
    builder.append(')');
    return Method.getMethod(builder.toString());
}

From source file:org.apache.jackrabbit.oak.security.user.autosave.AuthorizableWrapper.java

static Iterator<Authorizable> createIterator(Iterator<Authorizable> dlgs, AutoSaveEnabledManager mgr) {
    return Iterators.transform(dlgs, new AuthorizableWrapper(mgr));
}

From source file:org.apache.fluo.recipes.core.map.Update.java

static <K2, V2> Iterator<Update<K2, V2>> transform(Iterable<Change<K2, V2>> changes) {
    return Iterators.transform(changes.iterator(),
            change -> new Update<K2, V2>(change.getKey(), change.getOldValue(), change.getNewValue()));
}

From source file:org.apache.drill.exec.rpc.security.AuthStringUtil.java

public static Set<String> asSet(final List<String> list) {
    if (list == null) {
        return Sets.newHashSet();
    }/*from  w  ww .j  av a2s. com*/
    return Sets.newHashSet(Iterators.transform(list.iterator(), new Function<String, String>() {
        @Nullable
        @Override
        public String apply(@Nullable String input) {
            return input == null ? null : input.toUpperCase();
        }
    }));
}

From source file:co.cask.cdap.data.file.FileWriters.java

/**
 * Creates a {@link FileWriter} that writes to the given {@link FileWriter} with each event transformed by the
 * given transformation function./*from  w w  w .  ja v  a  2 s  .c om*/
 *
 * @param writer the {@link FileWriter} to write to
 * @param transform the transformation function for each individual event
 * @param <U> source type
 * @param <V> target type
 * @return a new instance of {@link FileWriter}
 */
public static <U, V> FileWriter<U> transform(final FileWriter<V> writer, final Function<U, V> transform) {
    return new FileWriter<U>() {
        @Override
        public void append(U event) throws IOException {
            writer.append(transform.apply(event));
        }

        @Override
        public void appendAll(Iterator<? extends U> events) throws IOException {
            writer.appendAll(Iterators.transform(events, transform));
        }

        @Override
        public void close() throws IOException {
            writer.close();
        }

        @Override
        public void flush() throws IOException {
            writer.flush();
        }
    };
}

From source file:com.mattc.argus2.io.Configs.java

public static void applyFunctionTo(String name, Function<Object, Object> func) {
    Iterators.transform(getIteratorFor(name), func);
}

From source file:org.caleydo.core.util.base.Labels.java

public static String join(Iterable<? extends ILabeled> labels, String separator) {
    return StringUtils.join(Iterators.transform(labels.iterator(), TO_LABEL), separator);
}

From source file:org.apache.jackrabbit.oak.security.user.autosave.AuthorizableWrapper.java

static Iterator<Group> createGroupIterator(Iterator<Group> dlgs, AutoSaveEnabledManager mgr) {
    return Iterators.transform(dlgs, new AuthorizableWrapper(mgr));
}

From source file:org.apache.jackrabbit.oak.security.user.AuthorizableIterator.java

static AuthorizableIterator create(Iterator<String> authorizableOakPaths, UserManagerImpl userManager,
        AuthorizableType authorizableType) {
    Iterator it = Iterators.transform(authorizableOakPaths,
            new PathToAuthorizable(userManager, authorizableType));
    long size = getSize(authorizableOakPaths);
    return new AuthorizableIterator(Iterators.filter(it, Predicates.notNull()), size);
}