argos/dmp-backend/data/src/main/java/eu/eudat/data/query/definition/helpers/ColumnOrderings.java

package eu.eudat.data.query.definition.helpers;

import java.util.LinkedList;
import java.util.List;


public class ColumnOrderings {

    private String[] fields;

    public String[] getFields() {
        return fields;
    }

    public void setFields(String[] fields) {
        this.fields = fields;
    }

    public Ordering[] getFieldOrderings()  {
        List<Ordering> orderings = new LinkedList<>();
        for (String field : fields) {
            orderings.add(this.orderingFromString(field));
        }
        return orderings.toArray(new Ordering[orderings.size()]);
    }

    private Ordering orderingFromString(String field) {
        Ordering ordering = new Ordering(field);
        if (ordering.getFieldName().contains("+"))
            ordering.fieldName(ordering.getFieldName().replace("+", "")).orderByType(Ordering.OrderByType.ASC);
        else if (ordering.getFieldName().startsWith("-"))
            ordering.fieldName(ordering.getFieldName().replace("-", "")).orderByType(Ordering.OrderByType.DESC);
        if (ordering.getFieldName().contains("|count|"))
            ordering.fieldName(ordering.getFieldName().replace("|count|", "")).columnType(Ordering.ColumnType.COUNT);
        else if (ordering.getFieldName().contains("|join|"))
            ordering.fieldName(ordering.getFieldName().replace("|join|", "")).columnType(Ordering.ColumnType.JOIN_COLUMN);
        else if (ordering.getFieldName().equals("asc"))
            ordering.fieldName("label").orderByType(Ordering.OrderByType.ASC);
        else if (ordering.getFieldName().equals("desc"))
            ordering.fieldName("label").orderByType(Ordering.OrderByType.DESC);
        return ordering;
    }
}