Large scale application design and development involve some critical decisions, and one of the most important issues that a ect software application design and development is the technology stack used to develop an extensive system. In a JPA API, response time is often a measure of how quickly an interactive system responds to user input. Persisting framework, such as Object Relational Mapping (ORM) are applied to manage communications between an object model and data model components and are vital for such systems. Hibernate is considered the most e ective ORM framework due to its advanced features, and it is the de-facto standard for Java Persistence API (JPA)-based data persistent frameworks. This thesis comprises a review of the most widely used JPA providers, particularly frameworks that provide JPA support such as Hibernate JPA, EclipseLink, OpenJPA and DataNucleus JPA. In current java programming, APIs based on persistence and performance are integral aspects of an application. Performance analysis of the above four JPA implementations is based on the ORM framework that contributed most signi cantly to discovering the challenges and veri ed the programming considerations in the language. For a large-scale enterprise, working on JPA is always tedious due to the potential pressures and overloads of the implementations, as well as the comprehensive guarantee, that is required while adopting the technology. A JPA implementation continually persists data into the database at runtime, by managing persistence processes through interfaces and classes, that often needs optimization, to provide performance-oriented results at heavy loads. Therefore, in this thesis a detail feature analysis was performed, before the performance analysis. To enhance the comparison of the persistence framework, an extended experiment with a cloud database using Database-as-a-service (DBaaS) versus Physical Persistence was performed, using a comparative approach for all four JPA implementations. Di erent SQL queries on cloud versus physical persistence for JPA applications were measured using CPU, GC, and threads (live and daemon). Finally, a statistical analysis was performed using the Pearson's correlation coe cient and a steady/start-up phase.

A abordagem de desenvolvimento dirigido por modelos (DDM) propõe que modelos (e transformações entre modelos) assumam o papel principal no desenvolvimento de sistemas. Entretanto, não há uma notação consensual para modelagem de persistência baseada em arcabouços de mapeamento objeto-relacional: enquanto a UML não possui recursos específicos para a modelagem de persistência, o modelo entidade-relacionamento não expressa os conceitos dinâmicos existentes na UML. Este trabalho propõe o perfil UML MD-JPA (Model Driven JPA) para a modelagem de persistência baseada na já difundida API de persistência Java (JPA), buscando a modelagem dos elementos persistentes e transientes de forma mais coerente e integrada. São especificadas as principais características do perfil MD-JPA, assim como a maneira pela qual modelos que adotam este perfil podem ser transformados em implementação Java, através de transformações de modelos propostas em uma abordagem DDM. Por fim, uma ferramenta de código livre foi desenvolvida para disponibilizar para comunidade os resultados deste trabalho. / The model driven development (MDD) approach proposes that models (and modelto- model transformations) play the main role on system development. However, there is not a consensual notation to model persistence based upon object relational mapping frameworks: while UML lacks specific resources for persistence modeling, the entityrelationship model does not make reference to the dynamic concepts existing in UML. This work proposes MD-JPA, a UML profile for persistence modeling based on the well-known Java Persistence API (JPA), pursuing the modeling of transient and persistent elements in a more coherent and integrated way. This work describes the main characteristics of MD-JPA as well as the way that models that adopt such profile can them be used to generate a Java implementation by the application of the proposed model transformations on a MDD approach. Finally, an open source tool was developed to make the results of this work available to the community.

A abordagem de desenvolvimento dirigido por modelos (DDM) propõe que modelos (e transformações entre modelos) assumam o papel principal no desenvolvimento de sistemas. Entretanto, não há uma notação consensual para modelagem de persistência baseada em arcabouços de mapeamento objeto-relacional: enquanto a UML não possui recursos específicos para a modelagem de persistência, o modelo entidade-relacionamento não expressa os conceitos dinâmicos existentes na UML. Este trabalho propõe o perfil UML MD-JPA (Model Driven JPA) para a modelagem de persistência baseada na já difundida API de persistência Java (JPA), buscando a modelagem dos elementos persistentes e transientes de forma mais coerente e integrada. São especificadas as principais características do perfil MD-JPA, assim como a maneira pela qual modelos que adotam este perfil podem ser transformados em implementação Java, através de transformações de modelos propostas em uma abordagem DDM. Por fim, uma ferramenta de código livre foi desenvolvida para disponibilizar para comunidade os resultados deste trabalho. / The model driven development (MDD) approach proposes that models (and modelto- model transformations) play the main role on system development. However, there is not a consensual notation to model persistence based upon object relational mapping frameworks: while UML lacks specific resources for persistence modeling, the entityrelationship model does not make reference to the dynamic concepts existing in UML. This work proposes MD-JPA, a UML profile for persistence modeling based on the well-known Java Persistence API (JPA), pursuing the modeling of transient and persistent elements in a more coherent and integrated way. This work describes the main characteristics of MD-JPA as well as the way that models that adopt such profile can them be used to generate a Java implementation by the application of the proposed model transformations on a MDD approach. Finally, an open source tool was developed to make the results of this work available to the community.

A abordagem de desenvolvimento dirigido por modelos (DDM) propõe que modelos (e transformações entre modelos) assumam o papel principal no desenvolvimento de sistemas. Entretanto, não há uma notação consensual para modelagem de persistência baseada em arcabouços de mapeamento objeto-relacional: enquanto a UML não possui recursos específicos para a modelagem de persistência, o modelo entidade-relacionamento não expressa os conceitos dinâmicos existentes na UML. Este trabalho propõe o perfil UML MD-JPA (Model Driven JPA) para a modelagem de persistência baseada na já difundida API de persistência Java (JPA), buscando a modelagem dos elementos persistentes e transientes de forma mais coerente e integrada. São especificadas as principais características do perfil MD-JPA, assim como a maneira pela qual modelos que adotam este perfil podem ser transformados em implementação Java, através de transformações de modelos propostas em uma abordagem DDM. Por fim, uma ferramenta de código livre foi desenvolvida para disponibilizar para comunidade os resultados deste trabalho. / The model driven development (MDD) approach proposes that models (and modelto- model transformations) play the main role on system development. However, there is not a consensual notation to model persistence based upon object relational mapping frameworks: while UML lacks specific resources for persistence modeling, the entityrelationship model does not make reference to the dynamic concepts existing in UML. This work proposes MD-JPA, a UML profile for persistence modeling based on the well-known Java Persistence API (JPA), pursuing the modeling of transient and persistent elements in a more coherent and integrated way. This work describes the main characteristics of MD-JPA as well as the way that models that adopt such profile can them be used to generate a Java implementation by the application of the proposed model transformations on a MDD approach. Finally, an open source tool was developed to make the results of this work available to the community.

V tomto texte sa zameriame na populárnu koncepciu kolaboratívnej tvorby dokumentov. Predstavíme si myšlienku využitia tohto mechanizmu v rôznych oblastiach rozhodovania, popíšeme si koncept a princíp fungovania. Následne si predstavíme a rozoberieme portály a portletovú technológiu, ich výhody a využitie. Cieľom práce je implementácia kolaboratívneho editora s využitím knižnice pre prácu so zmenami v dokumentoch s perzistentnou a aplikačnou logikou na platforme JEE a vytvorenie jednoduchého portletu pre túto službu.

The technology used in the development of web-applications is evolving at such rate that it has become more and more important to keep web-applications modern. If an application is based on a technical platform that is not renewed, the platform may over time develop into an obstacle in further development of the application. There may be compatibility issues and some of the code may be unnecessary due to abstraction, and therefore more time consuming to work with. Sometimes the reason may be that an application has been built to run, and is running on an application server that is no longer being maintained. The system can be large and modernization can cost a lot. In the study conducted and written about in the report, the task is to look at what possibilities there are to cost-effectively perform such a modernization. In the study two general modernization methods are identified, which define two different approaches that are studied. The different modernization approaches are tested in modernization of a web-based Java application to see advantages and disadvantages. The study results in two solutions, one more costly but that can have some benefits and another more cost-effective but that can be more short-sighted. / Utvecklingen går i rasande fart när det handlar om teknik och verktyg inom webb. Underhålls och förnyas inte den tekniska plattform en applikation bygger på, så kan den med tiden bli ett hinder i en framtida utveckling av produkten. Det kan vara kompatibilitetsproblem, eller att äldre tekniker används som är tidsödande och som idag har abstraherats bort. Orsaken kan vara att en applikation är utvecklad att köras på en viss applikationsserver som inte längre utvecklas, vilket kan ha hindrat applikationen från att följa med i utvecklingen. Om systemet då är stort kan en modernisering kosta mycket. I rapporten beskrivs en undersökning som har till uppgift att titta närmare på vad det finns för möjlighet att kostnadseffektivt utföra en sådan modernisering. Undersökningen i rapporten identifierar två generella moderniseringsmetoder som definierar två olika moderinseringsapproacher. Dessa används i två moderniseringsförsök på en webbaserad Java-applikation med mål att se fördelar och nackdelar. Undersökningen resulterar i två lösningar där en är mer kostsam men fullständigare, och en är snabbare men som i vissa fall kan vara kortsiktig.

Precis som de flesta företag så har True Software Scandinavia AB en produkt där ute i marknaden. Produkten är en mobil applikation som går under namnet Truecaller. För att kunna leverera den bästa upplevelsen till slut användarna så krävs en stor global telefonkatalog. Förutom att företaget har en statistik på hur det har gått och går för deras produkt så finns även behovet att veta hur det kommer att gå i framtiden. Alltså man vill veta hur stor potential det finns i marknaden och med avseende på detta försöka estimera när man når sitt uppsatta mål. Syftet med detta projekt har varit att skapa ett verktyg som kan samla in data och utföra nödvändiga behandlingar för att kunna estimera den framtida tillväxten. Verktyget skapas med hjälp av programmeringsspråket Java och kommer vara i form av ett skrivbords applikation. Eftersom ett sådant verktyg är stort och komplicerad, så kan det lösas genom att delas upp i mindre bestånds delar. Varje del utvecklas för sig själv och allt sätts ihop på slutet. För att hela verktyget ska kunna vara funktionellt och ge något resultat så måste varje delkomponent fungera korrekt. I resultatet kommer vi att verifiera att varje delkomponent utför sitt arbete felfri. Förutom resultatet så kommer dessutom vissa diskussioner kring generell barhet, kritik och förbättringar på arbetet att tas upp i denna rapport. / Like most companies, True Software Scandinavia AB has a product out in the market. The product is a mobile application, called Truecaller. In order to deliver the best experience to the end users, a large global phonebook is required. In addition that the company has statistics of how things have gone and are going for their product, there is also a need to know how it will go in the future. Thus they want to know how much potential there is in the market and with regard to this, attempt to estimate when they reach their goal. The purpose of this project is to create a tool that can collect data and perform the necessary process in order to estimate future growth. The tool is created using the Java programming language and will be in the form of a desktop application. As these kinds of tools are large and complex, it will be solved by subdividing it into smaller constituent parts. After each part is separately developed, all parts will be put together at the end. In order for the tool to be functional and give any result, each component must work correctly. In the results, we will verify that each component performs its work faultless. Apart from the result, even some discussions about general sustainability, criticisms and improvements on the work will be included in this report.

Nowadays, every single company needs to operate with large amount of data to support daily operation. Although there is pretty good market offer with information systems for managing various kinds of data, only small part of them is suitable for the company that does not deal with sale of goods but provides services, particularly marketing services or IT services (e.g. programming). This thesis describes the design and development of such a system which has a main goal to satisfy the needs of small to medium companies whose needs are still different than what currently marketed products can offer. Such a system will, apart from other functions, be able to manage projects and track work time of employees.

Práce má za cíl navrhnout a implementovat plaftormu pro interaktivní webové aplikace (Rich Internet Application - RIA) na základě vhodných technologíí pro programovací jazyky Java a JavaScript. Důraz je kladen na výběr odpovídající sady softwarových knihoven, používání principů správného objektově-orientovaného návrhu a programování a možnost dlouhodobé údržby výsledné aplikace.

This thesis focuses on development of web-based GPS data management system in a cloud environment. The thesis introduces the most used application interfaces for building custom mapping applications. It offers a comparison of cloud platforms such as Google App Engine and OpenShift Online. It also deals with the design and the implementation of system for OpenShift Online platform. The system focuses on importing tracks from GPX format, managing tracks, viewing tracks on map tiles from Mapy.cz, searching for tracks, creating an elevation profile and various statistics.