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momedalhoumamomedalhouma
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dao question anwsered
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lines changed

‎.gitignore

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.idea/
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Spring5Certification.iml
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Spring5Certification.iml
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target/

‎pom.xml

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<dependencies>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-core</artifactId>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>1.18.4</version>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-web</artifactId>
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<version>5.1.7.RELEASE</version>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.aspectj</groupId>
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<artifactId>aspectjrt</artifactId>
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<version>1.9.4</version>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.aspectj</groupId>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<version>1.4.197</version>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-orm</artifactId>
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<version>5.1.5.RELEASE</version>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>javax.persistence</groupId>
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<artifactId>javax.persistence-api</artifactId>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.hibernate</groupId>
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<artifactId>hibernate-entitymanager</artifactId>
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<version>LATEST</version>
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</dependency>
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<dependency>
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<groupId>org.springframework.data</groupId>
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<artifactId>spring-data-jpa</artifactId>
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<version>LATEST</version>
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</dependency>
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</dependencies>
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</project>

‎src/main/java/data/commun/Person.java

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package data.commun;
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import lombok.*;
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import org.springframework.lang.Nullable;
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import javax.persistence.*;
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import java.time.LocalDate;
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@Builder
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@Setter
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@Getter
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@EqualsAndHashCode
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@ToString
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@Entity(name = "Persons")
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public class Person {
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@Id
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@Column(name = "Identifiant")
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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private Integer id;
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@Column(name = "Name")
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private String name;
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@Column(name = "Age")
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private int age;
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@Column(name = "Date_of_Birth")
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private LocalDate dateOfBirth;
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// TODO: 07/07/2019
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@ManyToOne
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@JoinColumn(name = "Profesion_id")
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private Profession profession;
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}

‎src/main/java/data/commun/Profession.java

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package data.commun;
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import lombok.*;
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import javax.persistence.*;
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@Builder
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@Setter
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@Getter
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@EqualsAndHashCode
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@ToString
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@Entity(name = "Professions")
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public class Profession {
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@Id
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@Column(name = "Identifiant")
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@GeneratedValue(strategy = GenerationType.IDENTITY)
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private Integer id;
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@Column(name = "Name")
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private String name;
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@Column(name = "Description")
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private String description;
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}

‎src/main/java/data_transaction_jpa/question_001/SpringException.java renamed to ‎src/main/java/data/question_001/SpringException.java

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package data_transaction_jpa.question_001;
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package data.question_001;
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/**
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* What is the difference between checked and unchecked exceptions?
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* • Why does Spring prefer unchecked exceptions?
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* • What is the data_transaction_jpa access exception hierarchy?
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* • What is the data access exception hierarchy?
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*
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*
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*
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*
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* Checked exception should be managed in a try catch block or should be declared on the method signature.
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* unchecked exception don't have this restriction.
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* For this reason Spring Framework prefer to use the unchecked exception.
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* All the exceptions in the data_transaction_jpa access hierarchy are unchecked.
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* All the exceptions in the data access hierarchy are unchecked.
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* The purpose is to isolate the applications from particularity of vendor specification.
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*
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*/

‎src/main/java/data_transaction_jpa/question_02/MyDataSource.java renamed to ‎src/main/java/data/question_02/MyDataSource.java

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package data_transaction_jpa.question_02;
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package data.question_02;
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import ioc.commun.Person;
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public DataSource thirdDataSource (){
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final EmbeddedDatabase embeddedDatabase = new EmbeddedDatabaseBuilder()
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.setType(EmbeddedDatabaseType.H2)
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.addScripts("databaseconfig/ddl.script",//ddl data_transaction_jpa definition language define database schema
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"databaseconfig/dml.script")//dml data_transaction_jpa manipulation language CRUD operations
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.addScripts("databaseconfig/ddl.script",//ddl data definition language define database schema
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"databaseconfig/dml.script")//dml data manipulation language CRUD operations
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.build();
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return embeddedDatabase;
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‎src/main/java/data_transaction_jpa/question_03_04_05_06_07/MyJdbcTemplate.java renamed to ‎src/main/java/data/question_03_04_05_06_07/MyJdbcTemplate.java

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package data_transaction_jpa.question_03_04_05_06_07;
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package data.question_03_04_05_06_07;
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import org.springframework.jdbc.core.JdbcTemplate;
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* 1-Template design pattern define some steps which are executed in order, the super type define this order,
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* the subclasses implement only some predefined steps.
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* 2-
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* a- RowMapper<Object>: allows to handle rows in a result set row by row {@link data_transaction_jpa.question_02.MyDataSource#rowMapper(JdbcTemplate)}.
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* a- RowMapper<Object>: allows to handle rows in a result set row by row {@link data.question_02.MyDataSource#rowMapper(JdbcTemplate)}.
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* b-resultSetExtractor<List<Object>>:
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* allows to process the entire result set {@link data_transaction_jpa.question_02.MyDataSource#resultSetExtractor(JdbcTemplate)}.
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* allows to process the entire result set {@link data.question_02.MyDataSource#resultSetExtractor(JdbcTemplate)}.
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* c-@todo example to make for the RowCallbackHandler
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* * 3-yes
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* 4-Jdbc template release the connection after every request. jdbctemplate is trade safe

‎src/main/java/data_transaction_jpa/question_03_04_05_06_07/SqlQuery.java renamed to ‎src/main/java/data/question_03_04_05_06_07/SqlQuery.java

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package data_transaction_jpa.question_03_04_05_06_07;
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package data.question_03_04_05_06_07;
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import data_transaction_jpa.question_02.MyDataSource;
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import data.question_02.MyDataSource;
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import ioc.commun.Person;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;

‎src/main/java/data_transaction_jpa/question_08_09_10_11/EnablingTransaction.java renamed to ‎src/main/java/data/question_08_09_10_11/EnablingTransaction.java

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package data_transaction_jpa.question_08_09_10_11;
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package data.question_08_09_10_11;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.jdbc.datasource.DataSourceTransactionManager;

‎src/main/java/data_transaction_jpa/question_08_09_10_11/MyTransaction.java renamed to ‎src/main/java/data/question_08_09_10_11/MyTransaction.java

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package data_transaction_jpa.question_08_09_10_11;
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package data.question_08_09_10_11;
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/**

‎src/main/java/data_transaction_jpa/question_12_13/EnablingTransactionManagement.java renamed to ‎src/main/java/data/question_12_13/EnablingTransactionManagement.java

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package data_transaction_jpa.question_12_13;
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package data.question_12_13;
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/**

‎src/main/java/data_transaction_jpa/question_12_13/IsolationLevel.java renamed to ‎src/main/java/data/question_12_13/IsolationLevel.java

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package data_transaction_jpa.question_12_13;
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package data.question_12_13;
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import org.springframework.transaction.annotation.Isolation;
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/**
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* Problems we can get when two or more transactions are executing in parallel on the same data_transaction_jpa.
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* {@link IsolationLevel.READ_UNCOMMITTED} is the slowest isolation level, T1 can Read uncommitted data_transaction_jpa from T2.
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* Problems we can get when two or more transactions are executing in parallel on the same data.
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* {@link IsolationLevel.READ_UNCOMMITTED} is the slowest isolation level, T1 can Read uncommitted data from T2.
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* This Isolation level can produces Dirty Read problem:
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* On one cell for example, T1 read 10, T2 write 15,T1 read 15, T2 rollback, T1 get bad result.
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* T1---10---------25---
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* T2---10-----15----10-
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*
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* Dirty read occurs when T1 read data_transaction_jpa that was not yet committed by another Transaction.
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* Dirty read occurs when T1 read data that was not yet committed by another Transaction.
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* To solve this problem we should use {@link IsolationLevel.READ_COMMITTED}
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*
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* With {@link IsolationLevel.READ_COMMITTED}, non-repeatable read problem can be produced.

‎src/main/java/data_transaction_jpa/question_12_13/images/dirty_read.png renamed to ‎src/main/java/data/question_12_13/images/dirty_read.png

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‎src/main/java/data_transaction_jpa/question_12_13/images/non_repeatable_read.png renamed to ‎src/main/java/data/question_12_13/images/non_repeatable_read.png

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‎src/main/java/data_transaction_jpa/question_12_13/images/phantom_read.png renamed to ‎src/main/java/data/question_12_13/images/phantom_read.png

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‎src/main/java/data_transaction_jpa/question_14_15_16_17_18_19/TestingWithTransactionalMode.java renamed to ‎src/main/java/data/question_14_15_16_17_18_19/TestingWithTransactionalMode.java

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package data_transaction_jpa.question_14_15_16_17_18_19;
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package data.question_14_15_16_17_18_19;
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/**
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*

‎src/main/java/data_transaction_jpa/question_14_15_16_17_18_19/TransactionPropagation.java renamed to ‎src/main/java/data/question_14_15_16_17_18_19/TransactionPropagation.java

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package data_transaction_jpa.question_14_15_16_17_18_19;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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package data.question_14_15_16_17_18_19;
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import org.springframework.transaction.annotation.Propagation;
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import org.springframework.transaction.annotation.Transactional;
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/**
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*

‎src/main/java/data_transaction_jpa/question_14_15_16_17_18_19/images/ExceptionHierarchyJava.png renamed to ‎src/main/java/data/question_14_15_16_17_18_19/images/ExceptionHierarchyJava.png

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‎src/main/java/data_transaction_jpa/question_20_21_22_23_24/JDBCAutoCommitMode.java renamed to ‎src/main/java/data/question_20_21_22_23_24/JDBCAutoCommitMode.java

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package data_transaction_jpa.question_20_21_22_23_24;
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package data.question_20_21_22_23_24;
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/**

‎src/main/java/data_transaction_jpa/question_20_21_22_23_24/SpringJPA.java renamed to ‎src/main/java/data/question_20_21_22_23_24/SpringJPA.java

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package data_transaction_jpa.question_20_21_22_23_24;
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package data.question_20_21_22_23_24;
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import javax.persistence.EntityManager;
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import javax.persistence.EntityManagerFactory;
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import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
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import org.springframework.orm.jpa.LocalEntityManagerFactoryBean;
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/**
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*
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* ORM (Object relational model): mapping between object oriented data to relational data.
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* DataSourceTransactionManager
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* JpaTransactionManager : single transactional resource.
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* What do you have to configure to use JPA with Spring? How does Spring Boot make this
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* easier? spring-boot-starter-data-jpa -- Spring Boot autoconfigures data access layer related beans.
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* easier?
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* *Spring: dependencies to an ORM framework, a database driver, and a transaction manager.
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* *Sprig boot: dependencies to spring-boot-starter-data-jpa, spring Boot autoconfigures data access layer related beans.
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* *implement Entity classes.
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* *Defining a Datasource and a Transaction Manager.
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* *implementing repositories interfaces.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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public class SpringJPA {

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