D-Net

package eu.dnetlib.pace.model;

import java.util.Collection;

import java.util.Iterator;

import java.util.List;

import java.util.ListIterator;

import com.google.common.base.Function;

import com.google.common.base.Joiner;

import com.google.common.base.Predicate;

import com.google.common.collect.Iterables;

import com.google.common.collect.Lists;

import com.google.gson.Gson;

import com.google.gson.GsonBuilder;

import com.google.gson.JsonObject;

import eu.dnetlib.pace.config.Type;

/**

 * The Class FieldListImpl.

 */

public class FieldListImpl extends AbstractField implements FieldList {

	/** The fields. */

	private List<Field> fields;

	/**

	 * Instantiates a new field list impl.

	 */

	public FieldListImpl() {

		fields = Lists.newArrayList();

	}

	/**

	 * Instantiates a new field list impl.

	 *

	 * @param name

	 *            the name

	 */

	public FieldListImpl(final String name, final Type type) {

		super(type, name);

		fields = Lists.newArrayList();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#add(java.lang.Object)

	 */

	@Override

	public boolean add(final Field f) {

		return fields.add(f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#add(int, java.lang.Object)

	 */

	@Override

	public void add(final int i, final Field f) {

		fields.add(i, f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#addAll(java.util.Collection)

	 */

	@Override

	public boolean addAll(final Collection<? extends Field> f) {

		return fields.addAll(f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#addAll(int, java.util.Collection)

	 */

	@Override

	public boolean addAll(final int i, final Collection<? extends Field> f) {

		return fields.addAll(i, f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#clear()

	 */

	@Override

	public void clear() {

		fields.clear();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#contains(java.lang.Object)

	 */

	@Override

	public boolean contains(final Object o) {

		return fields.contains(o);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#containsAll(java.util.Collection)

	 */

	@Override

	public boolean containsAll(final Collection<?> f) {

		return fields.containsAll(f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#get(int)

	 */

	@Override

	public Field get(final int i) {

		return fields.get(i);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#indexOf(java.lang.Object)

	 */

	@Override

	public int indexOf(final Object o) {

		return fields.indexOf(o);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see eu.dnetlib.pace.model.Field#isEmpty()

	 */

	@Override

	public boolean isEmpty() {

		return Iterables.all(fields, new Predicate<Field>() {

			@Override

			public boolean apply(final Field f) {

				return f.isEmpty();

			}

		});

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.lang.Iterable#iterator()

	 */

	@Override

	public Iterator<Field> iterator() {

		return fields.iterator();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#lastIndexOf(java.lang.Object)

	 */

	@Override

	public int lastIndexOf(final Object o) {

		return fields.lastIndexOf(o);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#listIterator()

	 */

	@Override

	public ListIterator<Field> listIterator() {

		return fields.listIterator();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#listIterator(int)

	 */

	@Override

	public ListIterator<Field> listIterator(final int i) {

		return fields.listIterator(i);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#remove(java.lang.Object)

	 */

	@Override

	public boolean remove(final Object o) {

		return fields.remove(o);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#remove(int)

	 */

	@Override

	public Field remove(final int i) {

		return fields.remove(i);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#removeAll(java.util.Collection)

	 */

	@Override

	public boolean removeAll(final Collection<?> f) {

		return fields.removeAll(f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#retainAll(java.util.Collection)

	 */

	@Override

	public boolean retainAll(final Collection<?> f) {

		return fields.retainAll(f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#set(int, java.lang.Object)

	 */

	@Override

	public Field set(final int i, final Field f) {

		return fields.set(i, f);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#size()

	 */

	@Override

	public int size() {

		return fields.size();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#subList(int, int)

	 */

	@Override

	public List<Field> subList(final int from, final int to) {

		return fields.subList(from, to);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#toArray()

	 */

	@Override

	public Object[] toArray() {

		return fields.toArray();

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see java.util.List#toArray(java.lang.Object[])

	 */

	@Override

	public <T> T[] toArray(final T[] t) {

		return fields.toArray(t);

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see eu.dnetlib.pace.model.Field#stringValue()

	 */

	@Override

	public String stringValue() {

		switch (getType()) {

		case List:

		case Int:

		case String:

			return Joiner.on(" ").join(stringList());

		case JSON:

			final String json = new Gson().toJson(stringList());

			return json;

		default:

			throw new IllegalArgumentException("Unknown type: " + getType().toString());

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see eu.dnetlib.pace.model.FieldList#stringList()

	 */

	@Override

	public List<String> stringList() {

		return Lists.newArrayList(Iterables.transform(fields, getValuesTransformer()));

	}

	private Function<Field, String> getValuesTransformer() {

		return new Function<Field, String>() {

			@Override

			public String apply(final Field f) {

				return f.stringValue();

			}

		};

	}

	@Override

	public String toString() {

		return stringList().toString();

	}

}