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package eu.etaxonomy.cdm.api.service.util;
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import java.util.Arrays;
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import java.util.EnumSet;
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import java.util.HashSet;
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import java.util.Set;
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import eu.etaxonomy.cdm.model.common.RelationshipTermBase;
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import eu.etaxonomy.cdm.model.common.RelationshipBase.Direction;
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/**
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* Holds a RelationshipType ({@link RelationshipTermBase}) of type {@code <T>}
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* and gives it a direction which is one of:
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* <ul>
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* <li>direct, everted: {@link Direction.relatedTo}</li>
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* <li>inverse: {@link Direction.relatedFrom}</li>
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* <li>bidirectional: {@link Direction.relatedTo} and {@link Direction.relatedFrom}</li>
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* </ul>
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*
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* @author a.kohlbecker
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* @since Dec 7, 2012
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*
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*
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* @param <T> a sub class of ({@link RelationshipTermBase})
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*/
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public class AbstractRelationshipEdge<T extends RelationshipTermBase> {
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private Set<T> relationshipTypes;
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private EnumSet<Direction> directions;
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public AbstractRelationshipEdge(T relationshipType, Direction ... direction) {
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super();
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this.relationshipTypes = new HashSet<>();
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this.relationshipTypes.add(relationshipType);
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directions = EnumSet.copyOf(Arrays.asList(direction));
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}
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public AbstractRelationshipEdge(Set<T> relationshipTypes, Direction ... direction) {
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super();
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this.relationshipTypes = relationshipTypes;
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directions = EnumSet.copyOf(Arrays.asList(direction));
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}
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public Set<T> getRelationshipTypes() {
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return relationshipTypes;
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}
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public void setRelationshipTypes(Set<T> relationshipTypes) {
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this.relationshipTypes = relationshipTypes;
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}
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public EnumSet<Direction> getDirections() {
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return directions;
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}
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public void setDirections(EnumSet<Direction> directions) {
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this.directions = directions;
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}
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/**
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* set the <code>directions</code> to {@link Direction.relatedTo}
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*/
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public void setIsEvers() {
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directions = EnumSet.of(Direction.relatedTo);
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}
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/**
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* set the <code>directions</code> to {@link Direction.relatedFrom}
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*/
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public void setIsInvers() {
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directions = EnumSet.of(Direction.relatedFrom);
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}
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/**
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* set the <code>directions</code> to both {@link Direction.relatedTo} and
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* {@link Direction.relatedFrom}
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*/
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public void setIsBidirectional() {
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directions = EnumSet.allOf(Direction.class);
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}
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/**
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* @return <code>true</code> if the <code>directions</code> is set to
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* {@link Direction.relatedTo}
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*/
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public boolean isEvers() {
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return directions.equals(EnumSet.of(Direction.relatedTo));
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}
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/**
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* @return <code>true</code> if the <code>directions</code> is set to
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* {@link Direction.relatedFrom}
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*/
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public boolean isInvers() {
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return directions.equals(EnumSet.of(Direction.relatedFrom));
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}
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/**
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* @return <code>true</code> if the <code>directions</code> is set to both
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* {@link Direction.relatedTo} and {@link Direction.relatedFrom}
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*/
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public boolean isBidirectional() {
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return directions.equals(EnumSet.allOf(Direction.class));
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}
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}
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