org.apache.commons.collections.iterators.FilterIterator Java Examples

public static int getClustersStat(String clusters) {

        Predicate predicate = new Predicate() {
            public boolean evaluate(Object object) {
                String clustersId = ((ClustersState) object).getClusters();
                return clustersId.compareTo(clusters) == 0;
            }
        };

        Iterator iterator = new FilterIterator(stateArray.iterator(), predicate);

        ClustersState state = null;
        while (iterator.hasNext()) {
            state = (ClustersState) iterator.next();
            break;

        }
        return (state != null) ? state.getState() : 0;
    }
 

public static ConsumerClusters selectByClusters(String clusters) {
    Predicate predicate = new Predicate() {
        public boolean evaluate(Object object) {
            String id = ((ClustersRelation) object).getId();
            return id.compareTo(clusters) == 0;
        }
    };

    Iterator iterator = new FilterIterator(relationArray.iterator(), predicate);

    ClustersRelation relation = null;
    while (iterator.hasNext()) {
        relation = (ClustersRelation) iterator.next();
        break;
    }

    return (relation != null) ? relation.getClusters() : null;
}
 

/**
 * {@inheritDoc}
 */
@SuppressWarnings("unchecked")
@Override
public Collection<IModulaSymbol> getExportedSymbols() {
	Iterable<IModulaSymbol> iterable = () -> {
		return new FilterIterator(ProgramModuleSymbol.this.iterator(), o -> !imports.containsValue(o)
                && ((IModulaSymbol)o).isAttributeSet(SymbolAttribute.PUBLIC));
	};
	
	return Lists.newArrayList(iterable);
}
 

/**
 * Creates the FilterIterator that underlies this Iterator
 */
protected void initialize() {
    if (!initialized) {
        filteredBalances = new FilterIterator(balancesSource, new Predicate() {
            public boolean evaluate(Object obj) {
                return balancePredicate.select((Balance) obj);
            }
        });
        initialized = true;
    }
}
 

@SuppressWarnings("unchecked")
@Override
public Iterator<Resource> listChildren() {
    return new TransformIterator(new FilterIterator(super.listChildren(), predicate), o -> new PredicatedResourceWrapper(
        (Resource) o, predicate));
}
 

/**
 * Gets an iterator that filters another iterator.
 * <p>
 * The returned iterator will only return objects that match the specified
 * filtering predicate.
 *
 * @param iterator  the iterator to use, not null
 * @param predicate  the predicate to use as a filter, not null
 * @return a new filtered iterator
 * @throws NullPointerException if either parameter is null
 */
public static Iterator filteredIterator(Iterator iterator, Predicate predicate) {
    if (iterator == null) {
        throw new NullPointerException("Iterator must not be null");
    }
    if (predicate == null) {
        throw new NullPointerException("Predicate must not be null");
    }
    return new FilterIterator(iterator, predicate);
}