org.oncoblocks.centromere.mongodb.CentromereMongoRepository.java Source code

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Here is the source code for org.oncoblocks.centromere.mongodb.CentromereMongoRepository.java

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/*
 * Copyright 2016 William Oemler, Blueprint Medicines
 *
 * 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.oncoblocks.centromere.mongodb;

import org.oncoblocks.centromere.core.model.Model;
import org.oncoblocks.centromere.core.repository.QueryCriteria;
import org.oncoblocks.centromere.core.repository.RepositoryOperations;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageImpl;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoOperations;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.repository.query.MongoEntityInformation;
import org.springframework.data.mongodb.repository.support.SimpleMongoRepository;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 * Implementation of {@link RepositoryOperations} using Spring Data's repository bean factory for
 *   instantiation.  All of the methods that are included in {@link org.springframework.data.repository.PagingAndSortingRepository}
 *   are handled by {@link SimpleMongoRepository}, while the remainder are implemented here.
 *
 * @author woemler
 * @since 0.4.1
 */
public class CentromereMongoRepository<T extends Model<ID>, ID extends Serializable>
        extends SimpleMongoRepository<T, ID> implements RepositoryOperations<T, ID> {

    private final MongoOperations mongoOperations;
    private final MongoEntityInformation<T, ID> metadata;

    public CentromereMongoRepository(MongoEntityInformation<T, ID> metadata, MongoOperations mongoOperations) {
        super(metadata, mongoOperations);
        this.mongoOperations = mongoOperations;
        this.metadata = metadata;
    }

    /**
     * {@link RepositoryOperations#findAll}
     */
    public List<T> find(Iterable<QueryCriteria> queryCriterias) {
        Criteria criteria = MongoQueryUtils.getQueryFromQueryCriteria(queryCriterias);
        Query query = new Query();
        if (criteria != null) {
            query.addCriteria(criteria);
        }
        return mongoOperations.find(query, metadata.getJavaType());
    }

    /**
     * {@link RepositoryOperations#findAll}
     */
    public List<T> find(Iterable<QueryCriteria> queryCriterias, Sort sort) {
        Criteria criteria = MongoQueryUtils.getQueryFromQueryCriteria(queryCriterias);
        Query query = new Query();
        if (criteria != null) {
            query.addCriteria(criteria);
        }
        return mongoOperations.find(query.with(sort), metadata.getJavaType());
    }

    /**
     * {@link RepositoryOperations#findAll}
     */
    public Page<T> find(Iterable<QueryCriteria> queryCriterias, Pageable pageable) {
        Criteria criteria = MongoQueryUtils.getQueryFromQueryCriteria(queryCriterias);
        Query query = new Query();
        if (criteria != null) {
            query.addCriteria(criteria);
        }
        List<T> entities = mongoOperations.find(query.with(pageable), metadata.getJavaType());
        long count = count(queryCriterias);
        return new PageImpl<>(entities, pageable, count);
    }

    /**
     * {@link RepositoryOperations#count}
     */
    public long count(Iterable<QueryCriteria> queryCriterias) {
        Criteria criteria = MongoQueryUtils.getQueryFromQueryCriteria(queryCriterias);
        Query query = new Query();
        if (criteria != null) {
            query.addCriteria(criteria);
        }
        return mongoOperations.count(query, metadata.getJavaType());
    }

    /**
     * {@link RepositoryOperations#distinct(String)}
     */
    public List<Object> distinct(String field) {
        return mongoOperations.getCollection(mongoOperations.getCollectionName(metadata.getJavaType()))
                .distinct(field);
    }

    /**
     * {@link RepositoryOperations#distinct(String, Iterable)}
     */
    public List<Object> distinct(String field, Iterable<QueryCriteria> queryCriterias) {
        Criteria criteria = MongoQueryUtils.getQueryFromQueryCriteria(queryCriterias);
        Query query = new Query();
        if (criteria != null) {
            query.addCriteria(criteria);
        }
        return mongoOperations.getCollection(mongoOperations.getCollectionName(metadata.getJavaType()))
                .distinct(field, query.getQueryObject());
    }

    /**
     * {@link RepositoryOperations#insert}
     */
    public <S extends T> S insert(S s) {
        mongoOperations.insert(s);
        return s;
    }

    /**
     * {@link RepositoryOperations#insert}
     */
    public <S extends T> List<S> insert(Iterable<S> entities) {
        List<S> entityList = iterableToList(entities);
        mongoOperations.insertAll(entityList);
        return entityList;
    }

    /**
     * {@link RepositoryOperations#update}
     */
    public <S extends T> S update(S s) {
        if (exists(s.getId())) {
            mongoOperations.save(s);
            return s;
        }
        return null;
    }

    /**
     * {@link RepositoryOperations#update}
     */
    public <S extends T> List<S> update(Iterable<S> entities) {
        List<S> updated = new ArrayList<>();
        for (S entity : entities) {
            entity = this.update(entity);
            if (entity != null)
                updated.add(entity);
        }
        return updated;
    }

    /**
     * Converts a generic {@link Iterable} to a {@link List}.
     *
     * @param iterable
     * @param <S>
     * @return
     */
    private <S extends T> List<S> iterableToList(Iterable<S> iterable) {
        List<S> list = new ArrayList<>();
        for (S entity : iterable) {
            list.add(entity);
        }
        return list;
    }

}