Examples of org.apache.commons.collections4.iterators.LazyIteratorChain

Package org.apache.commons.collections4.iterators

Examples of org.apache.commons.collections4.iterators.LazyIteratorChain

org.apache.commons.collections4.trie.analyzer.StringKeyAnalyzer
An LazyIteratorChain is an Iterator that wraps a number of Iterators in a lazy manner.
This class makes multiple iterators look like one to the caller. When any method from the Iterator interface is called, the LazyIteratorChain will delegate to a single underlying Iterator. The LazyIteratorChain will invoke the Iterators in sequence until all Iterators are exhausted.
The Iterators are provided by {@link #nextIterator(int)} which has to be overridden bysub-classes and allows to lazily create the Iterators as they are accessed:
```
 return new LazyIteratorChain<String>() { protected Iterator<String> nextIterator(int count) { return count == 1 ? Arrays.asList("foo", "bar").iterator() : null; } }; 
```
Once the inner Iterator's {@link Iterator#hasNext()} method returns false,{@link #nextIterator(int)} will be called to obtain another iterator, and so onuntil {@link #nextIterator(int)} returns null, indicating that the chain is exhausted.
NOTE: The LazyIteratorChain may contain no iterators. In this case the class will function as an empty iterator. @since 4.0 @version $Id: LazyIteratorChain.java 1482073 2013-05-13 20:09:40Z tn $

        }
        if (obj instanceof Map) {
            return ((Map<?, ?>) obj).values().iterator();
        }
        if (obj instanceof NodeList) {
            return new NodeListIterator((NodeList) obj);
        }
        if (obj instanceof Node) {
            return new NodeListIterator((Node) obj);
        }
        if (obj instanceof Dictionary) {
            return new EnumerationIterator<Object>(((Dictionary<?, ?>) obj).elements());
        } else if (obj.getClass().isArray()) {
            return new ArrayIterator<Object>(obj);

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        m.put("d", "4");
        return m;
    }


    private Map makeEmptyMap() {
        return new MultiValueMap();
    }

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public class PatriciaTrie<E> extends AbstractPatriciaTrie<String, E> implements Trie<String, E> {


    private static final long serialVersionUID = 4446367780901817838L;


    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }

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    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }


    public PatriciaTrie(final Map<? extends String, ? extends E> m) {
        super(new StringKeyAnalyzer(), m);
    }

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public class PatriciaTrie<E> extends AbstractPatriciaTrie<String, E> {


    private static final long serialVersionUID = 4446367780901817838L;


    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }

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    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }


    public PatriciaTrie(final Map<? extends String, ? extends E> m) {
        super(new StringKeyAnalyzer(), m);
    }

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public class PatriciaTrie<E> extends AbstractPatriciaTrie<String, E> {


    private static final long serialVersionUID = 4446367780901817838L;


    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }

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    public PatriciaTrie() {
        super(new StringKeyAnalyzer());
    }


    public PatriciaTrie(final Map<? extends String, ? extends E> m) {
        super(new StringKeyAnalyzer(), m);
    }

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