Category.java

package org.openlca.core.model;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.JoinColumn;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import org.openlca.util.KeyGen;

@Entity
@Table(name = "tbl_categories")
public class Category extends CategorizedEntity {

	@OneToMany(cascade = { CascadeType.ALL }, orphanRemoval = true)
	@JoinColumn(name = "f_category")
	private List<Category> childCategories = new ArrayList<>();

	@Enumerated(EnumType.STRING)
	@Column(name = "model_type")
	private ModelType modelType;

	public ModelType getModelType() {
		return modelType;
	}

	public void setModelType(ModelType modelType) {
		this.modelType = modelType;
	}

	public List<Category> getChildCategories() {
		return childCategories;
	}

	@Override
	public Category clone() {
		Category clone = new Category();
		Util.cloneRootFields(this, clone);
		clone.setModelType(getModelType());
		clone.setCategory(getCategory());
		for (Category child : getChildCategories()) {
			Category childCopy = child.clone();
			clone.getChildCategories().add(childCopy);
			childCopy.setCategory(clone);
		}
		return clone;
	}

	@Override
	public String toString() {
		return String.format("Category {modelType=%s, refId=%s, name=%s}",
				getModelType(), getRefId(), getName());
	}

	public static String createRefId(Category category) {
		List<String> path = new ArrayList<>();
		Category c = category;
		while (c != null) {
			path.add(0, c.getName());
			c = c.getCategory();
		}
		ModelType type = category.getModelType();
		if (type != null)
			path.add(0, type.name());
		return KeyGen.get(path.toArray(new String[path.size()]));
	}

}