package morphology.parser;

/**
 * Encapsulation of noun stem features.
 *
 * Project: NGSLT --> NLP --> Words --> Assignment #1
 * @author Normunds Grūzītis, Gunta Nešpore, Baiba Saulīte
 * @date February 2006
 */
public class NounStemFeature extends StemFeature {

	private String pos;
	private String decl;

	/**
	 * Constructor.
	 * @param pos part-of-speech.
	 * @param decl declension.
	 */
	public NounStemFeature(String pos, String decl) {
		this.pos = pos;
		this.decl = decl;
	}

	/**
	 * Gets part-of-speech of the stem.
	 * @return POS code (e.g., 'N').
	 */
	public String getPOS() {
		return pos;
	}

	/**
	 * Gets inflectional paradigm of the stem.
	 * @return code of the paradigm (e.g., 'D1', 'D2').
	 */
	public String getParadigm() {
		return decl;
	}
	
	/**
	 * Indicates whether some other feature is equal by content to this one.
	 * @param obj the reference object with which to compare.
	 * @return true if this feature is the same as the argument; false otherwise.
	 */
	public boolean equals(Object obj) {
		boolean isEqual = false;

		if (obj instanceof NounStemFeature) {
			NounStemFeature feature = (NounStemFeature)obj;
			if (feature.getPOS().equals(pos) && feature.getParadigm().equals(decl)) isEqual = true;
		}

		return isEqual;
	}
	
	/**
	 * Gives string representation of this feature object.
	 * @return feature string.
	 */
	public String toString() {
		return pos + " " + decl;
	}

}