diff --git a/src/main/java/com/cristobalbernal/loladvisor/dao/LolDaoImplMemory.java b/src/main/java/com/cristobalbernal/loladvisor/dao/LolDaoImplMemory.java
new file mode 100644
index 0000000..ccef6c0
--- /dev/null
+++ b/src/main/java/com/cristobalbernal/loladvisor/dao/LolDaoImplMemory.java
@@ -0,0 +1,69 @@
+package com.cristobalbernal.loladvisor.dao;
+
+import com.cristobalbernal.loladvisor.config.AppConfig;
+import com.cristobalbernal.loladvisor.model.Lol;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+import javax.annotation.PostConstruct;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Optional;
+
+@Repository
+public class LolDaoImplMemory implements LolDao {
+	
+	public List<Lol> lol = new ArrayList<>();
+	
+	@Autowired
+	private AppConfig appConfig;
+	
+	@PostConstruct
+	public void init() {
+		lol = UtilLolFileReader.readFile(appConfig.getFile(), appConfig.getSeparator(), appConfig.getListSeparator());
+	}
+
+	public Lol findById(long id) {
+		Optional<Lol> result = lol.stream().filter(vg -> vg.getId() == id).findFirst();
+		return result.orElse(null);
+	}
+	
+	public Collection<Lol> findAll() {
+		return lol;
+	}
+
+	public void insert(Lol videogame) {
+		lol.add(videogame);
+	}
+
+	public void edit(Lol videogame) {
+		int i = getIndexOf(videogame.getId());
+		if(i != -1) {
+			lol.set(i, videogame);
+		}
+	}
+
+	public void delete(long id) {
+		int i = getIndexOf(id);
+		if(i != -1) {
+			lol.remove(i);
+		}
+	}
+	
+	private int getIndexOf(long id) {
+		boolean founds = false;
+		int i = 0;
+		
+		while(!founds && i < lol.size()) {
+			if(lol.get(i).getId() == id) {
+				founds = true;
+			} else {
+				i++;
+			}
+		}
+		
+		return (founds) ? i : -1;
+	}
+
+}
diff --git a/src/main/java/com/cristobalbernal/loladvisor/dao/UtilLolFileReader.java b/src/main/java/com/cristobalbernal/loladvisor/dao/UtilLolFileReader.java
new file mode 100644
index 0000000..5ce5aa6
--- /dev/null
+++ b/src/main/java/com/cristobalbernal/loladvisor/dao/UtilLolFileReader.java
@@ -0,0 +1,35 @@
+package com.cristobalbernal.loladvisor.dao;
+import com.cristobalbernal.loladvisor.model.Lol;
+import org.springframework.util.ResourceUtils;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+public class UtilLolFileReader {
+	public static List<Lol> readFile(final String path, final String separator, final String listSeparator) {
+		List<Lol> result = new ArrayList<Lol>();
+		
+		try {
+			// @formatter:off
+			result = Files
+						.lines(Paths.get(ResourceUtils.getFile(path).toURI()))
+						.skip(1)
+						.map(line -> {
+							String[] values = line.split(separator);
+							return new Lol(Long.parseLong(values[0]), values[1],
+									Arrays.asList(values[3].split(listSeparator)), values[4]);
+					}).collect(Collectors.toList());
+ 			// @formatter:on
+
+
+		} catch (Exception e) {
+			System.err.println("Error de lectura del fichero de datos");
+			System.exit(-1);
+		}
+		
+		return result;
+	}
+}
diff --git a/src/main/java/com/cristobalbernal/loladvisor/service/LolQueryService.java b/src/main/java/com/cristobalbernal/loladvisor/service/LolQueryService.java
new file mode 100644
index 0000000..5185e4f
--- /dev/null
+++ b/src/main/java/com/cristobalbernal/loladvisor/service/LolQueryService.java
@@ -0,0 +1,11 @@
+package com.cristobalbernal.loladvisor.service;
+
+import com.cristobalbernal.loladvisor.model.Lol;
+import java.util.Collection;
+
+public interface LolQueryService {
+	public Collection<Lol> exec();
+	public LolQueryService anyName(String... name);
+	public LolQueryService allName(String... name);
+	public LolQueryService titleContains(String title);
+}
diff --git a/src/main/java/com/cristobalbernal/loladvisor/service/LolQueryServiceImpl.java b/src/main/java/com/cristobalbernal/loladvisor/service/LolQueryServiceImpl.java
new file mode 100644
index 0000000..523e269
--- /dev/null
+++ b/src/main/java/com/cristobalbernal/loladvisor/service/LolQueryServiceImpl.java
@@ -0,0 +1,57 @@
+package com.cristobalbernal.loladvisor.service;
+
+import com.cristobalbernal.loladvisor.dao.LolDao;
+import com.cristobalbernal.loladvisor.model.Lol;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import javax.annotation.PostConstruct;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
+
+@Service
+public class LolQueryServiceImpl implements LolQueryService {
+	@Autowired
+	private LolDao dao;
+	
+	private Predicate<Lol> predicate;
+	
+	@PostConstruct
+	public void init() {
+		predicate = null;
+	}
+
+	@Override
+	public Collection<Lol> exec() {
+		//@formatter:off
+		return dao.findAll()
+				.stream()
+				.filter(predicate)
+				.collect(Collectors.toList());
+		//@formatter:on
+	}
+
+	@Override
+	public LolQueryService anyName(String... name) {
+		Predicate<Lol> pAnyGenre = (vg -> Arrays.stream(name).anyMatch(vg.getNombre()::contains));
+		predicate = (predicate == null) ? pAnyGenre : predicate.and(pAnyGenre);
+		return this;
+	}
+
+	@Override
+	public LolQueryService allName(String... name) {
+		Predicate<Lol> pAllGenre = (vg -> Arrays.stream(name).allMatch(vg.getNombre()::contains));
+		predicate = (predicate == null) ? pAllGenre : predicate.and(pAllGenre);
+		return this;
+	}
+
+	@Override
+	public LolQueryService titleContains(String title) {
+		Predicate<Lol> pTitleContains = (vg -> vg.getNombre().toLowerCase().contains(title.toLowerCase()));
+		predicate = (predicate == null) ? pTitleContains : predicate.and(pTitleContains);
+		return this;
+	}
+
+}
diff --git a/src/main/java/com/cristobalbernal/loladvisor/service/LolService.java b/src/main/java/com/cristobalbernal/loladvisor/service/LolService.java
new file mode 100644
index 0000000..108308f
--- /dev/null
+++ b/src/main/java/com/cristobalbernal/loladvisor/service/LolService.java
@@ -0,0 +1,51 @@
+package com.cristobalbernal.loladvisor.service;
+import com.cristobalbernal.loladvisor.dao.LolDao;
+import com.cristobalbernal.loladvisor.model.Lol;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+public class LolService {
+	@Autowired
+	LolDao lolDao;
+
+	@Autowired
+	LolQueryService queryService;
+
+	public Collection<String> findAllRol() {
+		List<String> result = null;
+
+
+		result = lolDao.findAll()
+				.stream()
+				.map(vg -> vg.getRol())
+				.flatMap(list -> list.stream())
+				.distinct()
+				.sorted()
+				.collect(Collectors.toList());
+
+		// @formatter:on
+
+		return result;
+	}
+
+	public Collection<Lol> findByAnyGenre(String... genres) {
+		return queryService.anyName(genres).exec();
+	}
+
+	public Collection<Lol> findByAllGenres(String... genres) {
+		return queryService.allName(genres).exec();
+	}
+
+	public Collection<Lol> findByTitleContains(String title) {
+		return queryService.titleContains(title).exec();
+	}
+
+	public Collection<Lol> findAll() {
+		return lolDao.findAll();
+	}
+}