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:com.clxcommunications.xms.PagedFetcher.java

/**
 * Returns an iterable object that fetches and traverses all matching pages.
 * Each iteration will result in a network fetch.
 * <p>/*  w  w  w.  j ava 2s  .  c om*/
 * This iterator will always yield at least one page, which might be empty.
 * <p>
 * Since the returned iterator will perform asynchronous network traffic it
 * is possible that the {@link Iterator#next()} method throws
 * {@link RuntimeException} having as cause an {@link ExecutionException}.
 * 
 * @return a non-null iterable
 * @throws RuntimeApiException
 *             if the background page fetching failed
 */
@Nonnull
public Iterable<Page<T>> pages() {

    return new Iterable<Page<T>>() {

        @Override
        public Iterator<Page<T>> iterator() {

            return new Iterator<Page<T>>() {

                private Page<T> page = null;
                private int seenElements = 0;

                @Override
                public boolean hasNext() {
                    if (page == null) {
                        return true;
                    } else {
                        return seenElements < page.totalSize() && !page.isEmpty();
                    }
                }

                @Override
                public Page<T> next() {
                    int pageToFetch = (page == null) ? 0 : page.page() + 1;

                    try {
                        page = fetchAsync(pageToFetch, null).get();
                    } catch (InterruptedException e) {
                        // Interrupt the thread to let upstream code know.
                        Thread.currentThread().interrupt();
                    } catch (ExecutionException e) {
                        ApiException cause;

                        try {
                            cause = Utils.unwrapExecutionException(e);
                        } catch (ApiException einner) {
                            cause = einner;
                        }

                        throw new RuntimeApiException(cause);
                    }

                    seenElements += page.size();

                    return page;
                }

            };

        }

    };
}

From source file:oculus.aperture.common.JSONProperties.java

@Override
public Iterable<Object> getObjects(String key) {
    try {/*from  w  w w  .  j a v a2s  .  com*/
        final JSONArray array = obj.getJSONArray(key);

        return new Iterable<Object>() {
            @Override
            public Iterator<Object> iterator() {
                return new Iterator<Object>() {
                    private final int n = array.length();
                    private int i = 0;

                    @Override
                    public boolean hasNext() {
                        return n > i;
                    }

                    @Override
                    public Object next() {
                        try {
                            return (n > i) ? array.get(i++) : null;
                        } catch (JSONException e) {
                            return null;
                        }
                    }

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

    } catch (JSONException e) {
        return EmptyIterable.instance();
    }
}

From source file:org.echocat.jomon.resources.FileResource.java

@Nonnull
@Override//from   w  w  w.j  av a 2s .c o m
public Iterable<Entry<String, String>> getProperties() throws IOException {
    final Map<String, String> copy;
    synchronized (this) {
        // noinspection unchecked, RedundantCast
        copy = new HashMap<>((Map<String, String>) (Object) getPropertiesInternal());
    }
    return new Iterable<Entry<String, String>>() {
        @Override
        public Iterator<Entry<String, String>> iterator() {
            return new ConvertingIterator<Map.Entry<String, String>, Entry<String, String>>(
                    copy.entrySet().iterator()) {
                private final AtomicReference<String> _currentKey = new AtomicReference<>();

                @Override
                protected Entry<String, String> convert(Map.Entry<String, String> input) {
                    _currentKey.set(input.getKey());
                    return new Impl<>(input.getKey(), input.getValue());
                }

                @Override
                public void remove() {
                    final String key = _currentKey.get();
                    if (key != null) {
                        try {
                            removeProperty(key);
                        } catch (final IOException e) {
                            throw new RuntimeException("Could not remove " + key + ".", e);
                        }
                    }
                }
            };
        }
    };
}

From source file:org.apache.hadoop.metrics2.impl.MetricsConfig.java

Iterable<String> keys() {
    return new Iterable<String>() {
        @SuppressWarnings("unchecked")
        public Iterator<String> iterator() {
            return (Iterator<String>) getKeys();
        }//from   ww w  .  j a v a  2  s. c o  m
    };
}

From source file:com.zavakid.mushroom.impl.MetricsConfig.java

Iterable<String> keys() {
    return new Iterable<String>() {

        public Iterator<String> iterator() {
            return (Iterator<String>) getKeys();
        }/*from www  .  ja  v  a  2  s.  c o m*/
    };
}

From source file:de.micromata.genome.gwiki.model.mpt.GWikiCombinedPageCache.java

public Iterable<GWikiElementInfo> getPageInfos() {
    return new Iterable<GWikiElementInfo>() {

        public Iterator<GWikiElementInfo> iterator() {
            return new CombinedElementInfoIterator();
        }/* ww w. ja v a2s  . com*/
    };
}

From source file:com.freiheit.fuava.simplebatch.http.ConvertingHttpPagingFetcher.java

@Override
public Iterable<Result<FetchedItem<T>, T>> fetchAll() {
    return new Iterable<Result<FetchedItem<T>, T>>() {

        @Override//from ww  w  .  j av a 2 s  .  c om
        public Iterator<Result<FetchedItem<T>, T>> iterator() {
            final Iterator<Result<PagingInput, Iterable<Raw>>> iterator = new LazyPageFetchingIterable<Iterable<Raw>>(
                    new HttpPageFetcher<Iterable<Raw>>(fetcher, settings, converter), initialFrom, pageSize,
                    settings);
            return Iterators.concat(Iterators.transform(iterator, resultTransformer));
        }

    };

}

From source file:org.polymap.core.runtime.cache.Soft2Cache.java

public Iterable<V> values() {
    assert entries != null : "Cache is closed.";

    // the returned iterator should be aware off reclaimed entries
    // and needs to support remove()
    return new Iterable<V>() {
        public Iterator<V> iterator() {
            return new Iterator<V>() {

                private Iterator<CacheEntry<K, V>> it = entries.values().iterator();

                private CacheEntry<K, V> next;

                public boolean hasNext() {
                    // find next, un-reclaimed entry
                    while ((next == null || next.value() == null) && it.hasNext()) {
                        next = it.next();
                    }//from www. jav  a2 s.c om
                    return next != null;
                }

                public V next() {
                    assert next != null;
                    try {
                        return next.value();
                    } finally {
                        next = null;
                    }
                }

                public void remove() {
                    it.remove();
                }
            };
        }
    };
}

From source file:org.jiemamy.entity.io.meta.EntityMeta.java

/**
* ???{@link Iterable}??//from   ww  w .  j a va 2s. com
* 
* @return ???{@link Iterable}
*/
public Iterable<PropertyMeta> getAllPropertyMeta() {
    return new Iterable<PropertyMeta>() {

        public Iterator<PropertyMeta> iterator() {
            return new Iterator<PropertyMeta>() {

                private int i;

                public boolean hasNext() {
                    return i < propertyMetas.size();
                }

                public PropertyMeta next() {
                    return propertyMetas.get(i++);
                }

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

From source file:rita.compiler.CompileString.java

static Iterable<JavaSourceFromString> getJavaSourceFromString(String code) {
    final JavaSourceFromString jsfs;
    jsfs = new JavaSourceFromString(clazzName, code);
    return new Iterable<JavaSourceFromString>() {
        public Iterator<JavaSourceFromString> iterator() {
            return new Iterator<JavaSourceFromString>() {
                boolean isNext = true;

                public boolean hasNext() {
                    return isNext;
                }//from w  w w. ja  v a  2 s .c  o m

                public JavaSourceFromString next() {
                    if (!isNext)
                        throw new NoSuchElementException();
                    isNext = false;
                    return jsfs;
                }

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