com.trenako.repositories.mongo.BrowseRepositoryImpl.java Source code

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Here is the source code for com.trenako.repositories.mongo.BrowseRepositoryImpl.java

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/*
 * Copyright 2012 the original author or authors.
 * 
 * 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 com.trenako.repositories.mongo;

import static com.trenako.repositories.mongo.RollingStockQueryBuilder.buildQuery;
import static org.springframework.data.mongodb.core.query.Criteria.where;
import static org.springframework.data.mongodb.core.query.Query.query;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.domain.Sort.Direction;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.stereotype.Repository;

import com.trenako.criteria.SearchCriteria;
import com.trenako.entities.Brand;
import com.trenako.entities.Railway;
import com.trenako.entities.RollingStock;
import com.trenako.entities.Scale;
import com.trenako.repositories.BrowseRepository;
import com.trenako.results.PaginatedResults;
import com.trenako.results.RangeRequest;
import com.trenako.results.RollingStockResults;

/**
 * The concrete implementation for the browse repository.
 *
 * @author Carlo Micieli
 */
@Repository("browseRepository")
public class BrowseRepositoryImpl implements BrowseRepository {

    private final MongoTemplate mongo;

    /**
     * Creates a new {@code BrowseRepositoryImpl}.
     *
     * @param mongo the mongo template
     */
    @Autowired
    public BrowseRepositoryImpl(MongoTemplate mongo) {
        this.mongo = mongo;
    }

    @Override
    public Iterable<Brand> getBrands() {
        return findAll(Brand.class);
    }

    @Override
    public Iterable<Scale> getScales() {
        return findAll(Scale.class);
    }

    @Override
    public Iterable<Railway> getRailways() {
        return findAll(Railway.class);
    }

    @Override
    public PaginatedResults<RollingStock> findByCriteria(SearchCriteria sc, RangeRequest range) {
        return runRangeQuery(MongoSearchCriteria.buildCriteria(sc), sc, range);
    }

    @Override
    public PaginatedResults<RollingStock> findByTag(String tag, RangeRequest range) {
        return runRangeQuery(where("tag").is(tag), new SearchCriteria(), range);
    }

    @Override
    public <T> T findBySlug(String slug, Class<T> entityClass) {
        return mongo.findOne(query(where("slug").is(slug)), entityClass);
    }

    private RollingStockResults runRangeQuery(Criteria criteria, SearchCriteria sc, RangeRequest range) {
        final Query query = buildQuery(criteria, range);
        final List<RollingStock> results = mongo.find(query, RollingStock.class);
        return new RollingStockResults(results, sc, range);
    }

    private static final Sort NAME_SORT = new Sort(Direction.ASC, "name");

    private <T> Iterable<T> findAll(Class<T> clazz) {
        Query query = new Query();
        query.with(NAME_SORT);
        return mongo.find(query, clazz);
    }
}