VersionedModelFilter.java

/*
 * Copyright 2019 Global Crop Diversity Trust
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.genesys.blocks.model.filters;

import java.util.List;
import java.util.Set;

import org.apache.commons.collections4.CollectionUtils;
import org.genesys.blocks.model.QVersionedModel;
import org.genesys.blocks.model.VersionedModel;

import com.querydsl.core.types.Predicate;
import com.querydsl.core.types.dsl.EntityPathBase;

import lombok.EqualsAndHashCode;
import lombok.Getter;
import lombok.experimental.Accessors;

/**
 * {@link VersionedModel} match by sample filters.
 *
 * @param <T> the generic type
 * @param <R> the generic type
 */
@Getter
@EqualsAndHashCode(callSuper = true)
@Accessors(fluent = true)
public abstract class VersionedModelFilter<T extends VersionedModelFilter<T, R, Q>, R extends VersionedModel, Q extends EntityPathBase<R>> extends BasicModelFilter<T, R, Q> {

	private static final long serialVersionUID = -4226770121644301621L;

	/** The version. */
	public Set<Integer> version;

	/** The active. */
	public Boolean active;

	/**
	 * Collects list of filter predicates
	*
	* @param instance the instance of Q-type of <em>R</em>
	* @param versionedInstance the Q-type of VersionedModel
	* @return list of predicates
	*/
	protected List<Predicate> collectSuperPredicates(final Q instance, final QVersionedModel versionedInstance) {
		List<Predicate> predicates = super.collectSuperPredicates(instance, versionedInstance._super._super);
		if (CollectionUtils.isNotEmpty(version)) {
			predicates.add(versionedInstance.version.in(version));
		}
		if (active != null) {
			predicates.add(versionedInstance.active.eq(active));
		}
		return predicates;
	}

	@SuppressWarnings("unchecked")
	public T version(Set<Integer> version) {
		this.version = version;
		return (T) this;
	}

	@SuppressWarnings("unchecked")
	public T active(Boolean active) {
		this.active = active;
		return (T) this;
	}

}