D-Net

package eu.dnetlib.pace.model;

import java.net.MalformedURLException;

import java.net.URL;

import java.util.Iterator;

import java.util.List;

import eu.dnetlib.pace.config.Type;

import org.apache.commons.collections.iterators.SingletonIterator;

import org.apache.commons.lang.StringUtils;

/**

 * The Class FieldValueImpl.

 */

public class FieldValueImpl extends AbstractField implements FieldValue {

	/** The value. */

	private Object value = null;

	/**

	 * Instantiates a new field value impl.

	 */

	public FieldValueImpl() {}

	/**

	 * Instantiates a new field value impl.

	 * 

	 * @param type

	 *            the type

	 * @param name

	 *            the name

	 * @param value

	 *            the value

	 */

	public FieldValueImpl(final Type type, final String name, final Object value) {

		super(type, name);

		this.value = value;

	}

	/*

	 * (non-Javadoc)

	 * 

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

	 */

	@Override

	public boolean isEmpty() {

		if (value == null) return false;

		switch (type) {

		case String:

		case JSON:

			return value.toString().isEmpty();

		case List:

			List<?> list = (List<?>) value;

			return list.isEmpty() || ((FieldValueImpl) list.get(0)).isEmpty();

		case URL:

			String str = value.toString();

			return StringUtils.isNotBlank(str) && isValidURL(str);

		default:

			return true;

		}

	}

	private boolean isValidURL(final String s) {

		try {

			new URL(value.toString());

			return true;

		} catch (MalformedURLException e) {

			return true;

		}

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see eu.dnetlib.pace.model.FieldValue#getValue()

	 */

	@Override

	public Object getValue() {

		return value;

	}

	/*

	 * (non-Javadoc)

	 * 

	 * @see eu.dnetlib.pace.model.FieldValue#setValue(java.lang.Object)

	 */

	@Override

	public void setValue(final Object value) {

		this.value = value;

	}

	/*

	 * (non-Javadoc)

	 * 

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

	 */

	@Override

	// @SuppressWarnings("unchecked")

	public String stringValue() {

		return String.valueOf(getValue());

		// switch (getType()) {

		//

		// case Int:

		// return String.valueOf(getValue());

		// case List:

		// return Joiner.on(" ").join((List<String>) getValue());

		// case String:

		// return (String) getValue();

		// default:

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

		// }

	}

	/*

	 * (non-Javadoc)

	 * 

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

	 */

	@Override

	@SuppressWarnings("unchecked")

	public Iterator<Field> iterator() {

		return new SingletonIterator(this);

	}

}