73 lines
1.9 KiB
Java
73 lines
1.9 KiB
Java
package eu.eudat.data.query.definition;
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import eu.eudat.data.dao.criteria.Criteria;
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import eu.eudat.queryable.QueryableList;
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import eu.eudat.queryable.queryableentity.DataEntity;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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public abstract class Query<C extends Criteria<T>, T extends DataEntity> implements CriteriaQuery<C, T> {
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private static final Logger logger = LoggerFactory.getLogger(Query.class);
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private C criteria;
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private QueryableList<T> query;
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public static class QueryBuilder<C extends Criteria<T>, T extends DataEntity, Q extends Query<C, T>> {
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private C criteria;
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private QueryableList<T> query;
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private Class<Q> tClass;
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public QueryBuilder(Class<Q> tClass) {
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this.tClass = tClass;
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}
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public QueryBuilder<C, T, Q> criteria(C criteria) {
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this.criteria = criteria;
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return this;
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}
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public QueryBuilder<C, T, Q> query(QueryableList<T> query) {
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this.query = query;
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return this;
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}
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public Q build() {
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try {
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Q q = tClass.newInstance();
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q.setCriteria(criteria);
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q.setQuery(query);
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return q;
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} catch (InstantiationException | IllegalAccessException e) {
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logger.error (e.getMessage(), e);
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}
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return null;
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}
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}
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public QueryableList<T> getQuery() {
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return query;
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}
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public void setQuery(QueryableList<T> query) {
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this.query = query;
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}
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public C getCriteria() {
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return criteria;
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}
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public void setCriteria(C criteria) {
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this.criteria = criteria;
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}
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@Override
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public QueryableList<T> collect() {
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return this.applyCriteria();
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}
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@Override
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public QueryableList<T> collect(QueryableList<T> repo) {
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this.query = repo;
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return this.applyCriteria();
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}
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}
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