Example usage for java.util Iterator Iterator

Introduction

In this page you can find the example usage for java.util Iterator Iterator.

Prototype

Iterator

Source Link

Usage

From source file:org.jasper.collectionspace.smk.datasource.JsonCSDataSource.java

public void moveFirst() throws JRException {
    if (jsonTree == null || jsonTree.isMissingNode()) {
        throw new JRException("No JSON data to operate on!");
    }/*from   ww w  .  ja  v  a  2s  . c  o  m*/

    currentJsonNode = null;
    JsonNode result = getJsonData(jsonTree, selectExpression);
    if (result != null && result.isObject()) {
        //System.out.println("result is object");
        final List<JsonNode> list = new ArrayList<JsonNode>();
        list.add(result);
        jsonNodesIterator = new Iterator<JsonNode>() {
            private int count = -1;

            public void remove() {
                list.remove(count);
            }

            public JsonNode next() {
                count++;
                return list.get(count);
            }

            public boolean hasNext() {
                return count < list.size() - 1;
            }
        };
    } else if (result != null && result.isArray()) {
        jsonNodesIterator = result.getElements();
    }
}

From source file:act.installer.brenda.SQLConnection.java

private Iterator<BrendaRxnEntry> runSPQuery(final boolean isNatural) throws SQLException {
    String query = isNatural ? QUERY_NATURAL_SUBSTRATES_PRODUCTS : QUERY_SUBSTRATES_PRODUCTS;
    final PreparedStatement stmt = brendaConn.prepareStatement(query);
    final ResultSet results = stmt.executeQuery();

    return new Iterator<BrendaRxnEntry>() {
        @Override//from www  .  ja v  a2s. co  m
        public boolean hasNext() {
            return hasNextHelper(results, stmt);
        }

        @Override
        public BrendaRxnEntry next() {
            try {
                results.next();
                Integer literatureSubstrates = results.getInt(4);

                if (results.wasNull()) {
                    literatureSubstrates = null;
                }
                BrendaRxnEntry sp = new BrendaRxnEntry(results.getString(1), results.getString(2),
                        results.getString(3),
                        literatureSubstrates == null ? null : literatureSubstrates.toString(),
                        results.getString(5), results.getString(6), results.getString(7), results.getInt(8),
                        isNatural);
                return sp;
            } catch (SQLException e) {
                throw new RuntimeException(e);
            }

        }
    };
}

From source file:MicroMap.java

/**
 * @see java.util.Map#entrySet()/*w  ww .ja v  a  2  s  .c o m*/
 */
public Set<Entry<K, V>> entrySet() {
    return new AbstractSet<Entry<K, V>>() {
        @Override
        public Iterator<Entry<K, V>> iterator() {
            return new Iterator<Entry<K, V>>() {
                public boolean hasNext() {
                    return index < MicroMap.this.size();
                }

                public Entry<K, V> next() {
                    if (!hasNext()) {
                        throw new NoSuchElementException();
                    }
                    index++;

                    return new Map.Entry<K, V>() {
                        public K getKey() {
                            return key;
                        }

                        public V getValue() {
                            return value;
                        }

                        public V setValue(final V value) {
                            final V oldValue = MicroMap.this.value;

                            MicroMap.this.value = value;

                            return oldValue;
                        }
                    };
                }

                public void remove() {
                    clear();
                }

                int index = 0;
            };
        }

        @Override
        public int size() {
            return MicroMap.this.size();
        }
    };
}

From source file:com.trenako.values.DeliveryDate.java

private static Iterable<Integer> inverseRange(final int start, final int end) {
    return new Iterable<Integer>() {
        @Override//from  www  . j  av a  2 s.  c  o m
        public Iterator<Integer> iterator() {
            return new Iterator<Integer>() {
                private int current = end;

                @Override
                public boolean hasNext() {
                    return current >= start;
                }

                @Override
                public Integer next() {
                    if (!hasNext()) {
                        throw new NoSuchElementException();
                    }
                    int n = current;
                    current--;
                    return n;
                }

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

From source file:com.atomicleopard.thundr.ftp.FtpSession.java

/**
 * List remote contents in batches - includes both files and directories
 * /*from   www . j  a v  a 2s .c  o m*/
 * @param directory
 * @param batchSize
 * @return
 */
public Iterable<FTPFile[]> listBatch(final String directory, final int batchSize) {
    return timeLogAndCatch("List files in batch", new Callable<Iterable<FTPFile[]>>() {
        @Override
        public Iterable<FTPFile[]> call() throws Exception {
            final FTPListParseEngine engine = preparedClient.initiateListParsing(directory);
            return new Iterable<FTPFile[]>() {
                @Override
                public Iterator<FTPFile[]> iterator() {
                    return new Iterator<FTPFile[]>() {

                        @Override
                        public boolean hasNext() {
                            return engine.hasNext();
                        }

                        @Override
                        public FTPFile[] next() {
                            return engine.getNext(batchSize);
                        }

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

From source file:SortUtils.java

/**
 * Answer iterator, which iterates over specified data array according
 * to the specified permutation, that is
 * <code>data[p[0]],..,data[p[data.length-1]]</code>
 */// w  w w  .  j av  a  2  s.  c om
public static Iterator getIterator(final int[] p, final Object[] data) {
    return new Iterator() {
        int pos = 0;

        public boolean hasNext() {
            return pos < data.length;
        }

        public Object next() {
            return data[p[pos++]];
        }

        public void remove() {
            throw new UnsupportedOperationException("Cannot remove from immutable iterator!");
        }
    };
}

From source file:org.apache.hadoop.yarn.server.api.records.impl.pb.NodeStatusPBImpl.java

private synchronized void addContainerMemoryStatusesToProto() {
    maybeInitBuilder();//from www. j a v  a 2  s.c o  m
    builder.clearContainerMemoryStatuses();
    if (containerMemoryStatuses == null)
        return;
    Iterable<ContainerSqueezeUnitProto> iterable = new Iterable<ContainerSqueezeUnitProto>() {
        @Override
        public Iterator<ContainerSqueezeUnitProto> iterator() {
            return new Iterator<ContainerSqueezeUnitProto>() {

                Iterator<ContainerSqueezeUnit> iter = containerMemoryStatuses.iterator();

                @Override
                public boolean hasNext() {
                    return iter.hasNext();
                }

                @Override
                public ContainerSqueezeUnitProto next() {
                    return convertToProtoFormat(iter.next());
                }

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

                }
            };

        }
    };
    builder.addAllContainerMemoryStatuses(iterable);
}

From source file:com.intelligentsia.dowsers.entity.store.fs.FileEntityStore.java

@Override
public Iterable<Reference> find(final Class<?> expectedType) throws NullPointerException {
    final Collection<File> files = FileUtils.listFiles(root, new RegexFileFilter("^(.*?)"),
            DirectoryFileFilter.DIRECTORY);
    final Iterator<File> iterator = files.iterator();
    return new Iterable<Reference>() {

        @Override// w ww.  java  2s  .c o  m
        public Iterator<Reference> iterator() {
            return new Iterator<Reference>() {

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

                @Override
                public Reference next() {
                    return Reference.newReference(expectedType, iterator.next().getName());
                }

                @Override
                public boolean hasNext() {
                    return iterator.hasNext();
                }
            };
        }
    };
}

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

@Override
public Iterable<String> getStrings(String key) {
    try {//ww  w .jav  a2  s  .  c  om
        final JSONArray array = obj.getJSONArray(key);

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

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

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

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

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

From source file:org.apache.bookkeeper.mledger.impl.ManagedCursorContainer.java

@Override
public Iterator<ManagedCursor> iterator() {
    final Iterator<Map.Entry<String, Item>> it = cursors.entrySet().iterator();
    return new Iterator<ManagedCursor>() {
        @Override//w ww. j a v a2s .  co m
        public boolean hasNext() {
            return it.hasNext();
        }

        @Override
        public ManagedCursor next() {
            return it.next().getValue().cursor;
        }

        @Override
        public void remove() {
            throw new IllegalArgumentException("Cannot remove ManagedCursor form container");
        }
    };
}