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

package eu.eudat.data.query.definition;

import eu.eudat.data.dao.criteria.Criteria;
import eu.eudat.queryable.QueryableList;
import eu.eudat.queryable.queryableentity.DataEntity;

public abstract class Query<C extends Criteria<T>, T extends DataEntity> implements CriteriaQuery<C, T> {
    private C criteria;
    private QueryableList<T> query;

    public static class QueryBuilder<C extends Criteria<T>, T extends DataEntity, Q extends Query<C, T>> {
        private C criteria;
        private QueryableList<T> query;

        public QueryBuilder<C, T, Q> criteria(C criteria) {
            this.criteria = criteria;
            return this;
        }

        public QueryBuilder<C, T, Q> query(QueryableList<T> query) {
            this.query = query;
            return this;
        }

        public Q build(Class<Q> qClass) throws IllegalAccessException, InstantiationException {
            Q q = qClass.newInstance();
            q.setCriteria(criteria);
            q.setQuery(query);
            return q;
        }
    }

    public QueryableList<T> getQuery() {
        return query;
    }

    public void setQuery(QueryableList<T> query) {
        this.query = query;
    }

    public C getCriteria() {
        return criteria;
    }

    public void setCriteria(C criteria) {
        this.criteria = criteria;
    }

    @Override
    public QueryableList<T> collect() throws Exception {
        return this.applyCriteria();
    }

    @Override
    public QueryableList<T> collect(QueryableList<T> repo) throws Exception {
        this.query = repo;
        return this.applyCriteria();
    }
}