argos/dmp-backend/src/main/java/eu/eudat/models/helpers/common/ColumnOrderings.java

package eu.eudat.models.helpers.common;

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() throws Exception {
        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) throws Exception {
        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);
        return ordering;
    }
}