Example usage for java.lang Iterable Iterable

Introduction

In this page you can find the example usage for java.lang Iterable Iterable.

Prototype

Iterable

Source Link

Usage

From source file:org.apache.chemistry.opencmis.jcr.util.Iterables.java

public static <T> Iterable<T> concat(final Iterable<T> it1, final Iterable<T> it2) {
    return new Iterable<T>() {
        @SuppressWarnings("unchecked")
        public Iterator<T> iterator() {
            return new IteratorChain(it1.iterator(), it2.iterator());
        }// www .ja  va 2  s.  c om
    };
}

From source file:Main.java

/**
 * Creates an Iterable instance that just returns the given Iterator from its iterator() method.
 * //from   w w  w.  j  a  v a  2s. co m
 * This is useful for using an iterator in a foreach loop directly.
 * 
 * <p>
 * Example use:
 * <pre>
 *     for (Object o : iterable(iterator)) { ... }
 * </pre>
 * 
 * @throws NullPointerException if list is {@code null}
 */
public static <T> Iterable<T> iterable(final Iterator<T> iter) {
    if (iter == null)
        throw new NullPointerException("iter parameter is null"); //$NON-NLS-1$

    return new Iterable<T>() {
        @Override
        public Iterator<T> iterator() {
            return iter;
        }
    };
}

From source file:org.sybila.parasim.util.Iterables.java

public static <T> Iterable<T> concat(final List<Iterable<T>> iterables) {
    Validate.notNull(iterables);/*from www . j  av a  2  s.  c  o m*/
    if (iterables.isEmpty()) {
        throw new IllegalArgumentException("At least one iterable has to be given.");
    }
    return new Iterable<T>() {
        @Override
        public Iterator<T> iterator() {
            return new Iterator<T>() {

                private int currentIndex = 0;

                private Iterator<T> currentIterator = iterables.get(0).iterator();

                @Override
                public boolean hasNext() {
                    if (currentIterator.hasNext()) {
                        return true;
                    }
                    while (currentIndex < iterables.size() - 1) {
                        currentIndex++;
                        currentIterator = iterables.get(currentIndex).iterator();
                        if (currentIterator.hasNext()) {
                            return true;
                        }
                    }
                    return false;
                }

                @Override
                public T next() {
                    if (hasNext()) {
                        return currentIterator.next();
                    }
                    return null;
                }

                @Override
                public void remove() {
                    throw new UnsupportedOperationException("Not supported yet.");
                }
            };
        }
    };
}

From source file:org.apache.accumulo.core.util.format.FormatterFactory.java

@SuppressWarnings("unchecked")
public static Formatter getDefaultFormatter(final Iterable<Entry<Key, Value>> scanner,
        boolean printTimestamps) {
    return new FormatterShim(cloudbase.core.util.format.FormatterFactory
            .getDefaultFormatter(new Iterable<Entry<cloudbase.core.data.Key, cloudbase.core.data.Value>>() {
                @Override//  ww w  . jav a2  s.c  o m
                public Iterator<Entry<cloudbase.core.data.Key, cloudbase.core.data.Value>> iterator() {
                    return IteratorUtils.transformedIterator(scanner.iterator(), new Transformer() {
                        @Override
                        public Entry<cloudbase.core.data.Key, cloudbase.core.data.Value> transform(
                                Object input) {
                            Entry<Key, Value> entry = (Entry<Key, Value>) input;
                            return new AbstractMap.SimpleEntry<cloudbase.core.data.Key, cloudbase.core.data.Value>(
                                    entry.getKey().impl, entry.getValue().impl);
                        }
                    });
                }
            }, printTimestamps));
}

From source file:org.apache.chemistry.opencmis.jcr.util.Iterables.java

public static <T> Iterable<T> singleton(final T element) {
    return new Iterable<T>() {
        @SuppressWarnings("unchecked")
        public Iterator<T> iterator() {
            return new SingletonIterator(element);
        }/*from ww  w.  jav  a2s  .c o  m*/
    };
}

From source file:com.parse.ParseJSONUtils.java

/**
 * A helper for nonugly iterating over JSONObject keys.
 */// www . ja v  a  2 s. co m
public static Iterable<String> keys(JSONObject object) {
    final JSONObject finalObject = object;
    return new Iterable<String>() {
        @Override
        public Iterator<String> iterator() {
            return finalObject.keys();
        }
    };
}

From source file:com.bitranger.parknshop.common.recommend.collections.CollectionUtils.java

@SuppressWarnings({ "unchecked", "rawtypes" })
public static <E> Iterable<E> fast(final Iterable<E> iter) {
    if (iter instanceof FastIterable) {
        return new Iterable<E>() {
            @Override//w  w  w .  j  a  v a  2 s. c om
            public Iterator<E> iterator() {
                return ((FastIterable) iter).fastIterator();
            }
        };
    } else if (iter instanceof Cursor) {
        throw new IllegalArgumentException();
    } else {
        Optional<Method> fastMethod = fastIteratorMethods.getUnchecked(iter.getClass());
        if (fastMethod.isPresent()) {
            final Method method = fastMethod.get();
            return new Iterable<E>() {
                @Override
                public Iterator<E> iterator() {
                    try {
                        return (Iterator<E>) method.invoke(iter);
                    } catch (IllegalAccessException e) {
                        return iter.iterator();
                    } catch (InvocationTargetException e) {
                        throw Throwables.propagate(e.getCause());
                    }
                }
            };
        } else {
            return iter;
        }
    }
}

From source file:com.examples.with.different.packagename.ClassHierarchyIncludingInterfaces.java

public static Iterable<Class<?>> hierarchy(final Class<?> type, final Interfaces interfacesBehavior) {
    final Iterable<Class<?>> classes = new Iterable<Class<?>>() {

        @Override//from  w w  w  .  j  a v a2  s  .  com
        public Iterator<Class<?>> iterator() {
            final MutableObject<Class<?>> next = new MutableObject<Class<?>>(type);
            return new Iterator<Class<?>>() {

                @Override
                public boolean hasNext() {
                    return next.getValue() != null;
                }

                @Override
                public Class<?> next() {
                    final Class<?> result = next.getValue();
                    next.setValue(result.getSuperclass());
                    return result;
                }

                @Override
                public void remove() {
                    throw new UnsupportedOperationException();
                }

            };
        }

    };
    if (interfacesBehavior != Interfaces.INCLUDE) {
        return classes;
    }
    return new Iterable<Class<?>>() {

        @Override
        public Iterator<Class<?>> iterator() {
            final Set<Class<?>> seenInterfaces = new HashSet<Class<?>>();
            final Iterator<Class<?>> wrapped = classes.iterator();

            return new Iterator<Class<?>>() {
                Iterator<Class<?>> interfaces = Collections.<Class<?>>emptySet().iterator();

                @Override
                public boolean hasNext() {
                    return interfaces.hasNext() || wrapped.hasNext();
                }

                @Override
                public Class<?> next() {
                    if (interfaces.hasNext()) {
                        final Class<?> nextInterface = interfaces.next();
                        seenInterfaces.add(nextInterface);
                        return nextInterface;
                    }
                    final Class<?> nextSuperclass = wrapped.next();
                    final Set<Class<?>> currentInterfaces = new LinkedHashSet<Class<?>>();
                    walkInterfaces(currentInterfaces, nextSuperclass);
                    interfaces = currentInterfaces.iterator();
                    return nextSuperclass;
                }

                private void walkInterfaces(final Set<Class<?>> addTo, final Class<?> c) {
                    for (final Class<?> iface : c.getInterfaces()) {
                        if (!seenInterfaces.contains(iface)) {
                            addTo.add(iface);
                        }
                        walkInterfaces(addTo, iface);
                    }
                }

                @Override
                public void remove() {
                    throw new UnsupportedOperationException();
                }

            };
        }
    };
}

From source file:Main.java

/**
 * Wraps an {@link Enumeration} as an instance of {@link Iterable} so that
 * it can be passed into a "for each" logical construct.
 * /* w  w  w  .j a  v  a2 s . c  om*/
 * @param <T>
 * @param enumeration
 * @return An Iterable representation of the enumeration parameter.
 */
public static <T> Iterable<T> toIterable(final Enumeration<T> enumeration) {

    return new Iterable<T>() {
        public Iterator<T> iterator() {
            return new Iterator<T>() {

                public boolean hasNext() {
                    return enumeration.hasMoreElements();
                }

                public T next() {
                    return enumeration.nextElement();
                }

                public void remove() {
                    throw new UnsupportedOperationException();
                }
            };

        }
    };

}

From source file:com.thoughtworks.studios.journey.utils.IterableUtils.java

public static <T> Iterable<T> toIterable(final Iterator<T> iterator) {
    return new Iterable<T>() {
        @Override/*from  w  w w  . j  a  v  a  2  s .  c  o m*/
        public Iterator<T> iterator() {
            return iterator;
        }
    };
}