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DynamicQuery.java
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DynamicQuery.java
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/*
* Copyright (c) 2023 Contributors to the Eclipse Foundation
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* and Apache License v2.0 which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Apache License v2.0 is available at http://www.opensource.org/licenses/apache2.0.php.
*
* You may elect to redistribute this code under either of these licenses.
*
* Contributors:
*
* Otavio Santana
*/
package org.eclipse.jnosql.mapping.column.query;
import jakarta.data.Limit;
import jakarta.data.Sort;
import org.eclipse.jnosql.communication.column.ColumnQuery;
import org.eclipse.jnosql.mapping.core.NoSQLPage;
import org.eclipse.jnosql.mapping.column.MappingColumnQuery;
import org.eclipse.jnosql.mapping.core.repository.DynamicReturn;
import org.eclipse.jnosql.mapping.core.repository.SpecialParameters;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
import java.util.function.Supplier;
/**
* A query converter to update dynamic query to a {@link ColumnQuery}
*/
public class DynamicQuery implements Supplier<ColumnQuery> {
private final SpecialParameters special;
private final ColumnQuery query;
private DynamicQuery(SpecialParameters special, ColumnQuery query) {
this.special = special;
this.query = query;
}
@Override
public ColumnQuery get() {
if (special.isEmpty()) {
return query;
}
Optional<Limit> limit = special.limit();
if (special.hasOnlySort()) {
List<Sort> sorts = new ArrayList<>();
sorts.addAll(query.sorts());
sorts.addAll(special.sorts());
long skip = limit.map(l -> l.startAt() - 1).orElse(query.skip());
long max = limit.map(Limit::maxResults).orElse((int) query.limit());
return new MappingColumnQuery(sorts, max,
skip,
query.condition().orElse(null),
query.name());
}
if (limit.isPresent()) {
long skip = limit.map(l -> l.startAt() - 1).orElse(query.skip());
long max = limit.map(Limit::maxResults).orElse((int) query.limit());
List<Sort> sorts = query.sorts();
if (!special.sorts().isEmpty()) {
sorts = new ArrayList<>(query.sorts());
sorts.addAll(special.sorts());
}
return new MappingColumnQuery(sorts, max,
skip,
query.condition().orElse(null),
query.name());
}
return special.PageRequest().<ColumnQuery>map(p -> {
long size = p.size();
long skip = NoSQLPage.skip(p);
List<Sort> sorts = query.sorts();
if (!special.sorts().isEmpty()) {
sorts = new ArrayList<>(query.sorts());
sorts.addAll(special.sorts());
}
return new MappingColumnQuery(sorts, size, skip,
query.condition().orElse(null), query.name());
}).orElse(query);
}
/**
* Creates a {@link DynamicQuery} instance
* @param args the method parameters
* @param query the column query
* @return the {@link DynamicQuery} instance
* @throws NullPointerException when either args or query are null
*/
public static DynamicQuery of(Object[] args, ColumnQuery query) {
Objects.requireNonNull(args, "args is required");
Objects.requireNonNull(query, "query is required");
return new DynamicQuery(DynamicReturn.findSpecialParameters(args), query);
}
}