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BAEL-1107 : Introduction to Apache Cayenne Orm (#2650) 

* Different types of bean injection in Spring

* Difference between two dates in java

* Update README.md

* Simple clean of difference between dates

* Clean my test article

* Improve dates diff: for dates and datetimes

* Move difference between dates from core-java to libraries

* BAEL-890 - Kotlin-Allopen with Spring example

* BAEL-1107 - Introduction to Apache Cayenne Orm
This commit is contained in:
Dassi orleando 2017-09-21 02:01:43 +01:00 committed by maibin
parent 1852438f6a
commit 16b6e089c6
10 changed files with 369 additions and 0 deletions
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59
apache-cayenne/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<artifactId>apache-cayenne</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>apache-cayenne</name>
<description>Introduction to Apache Cayenne</description>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-modules</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<mysql.connector.version>5.1.31</mysql.connector.version>
<cayenne.version>4.0.M5</cayenne.version>
<junit.version>4.12</junit.version>
</properties>
<dependencies>
<dependency>
<groupId>org.apache.cayenne</groupId>
<artifactId>cayenne-server</artifactId>
<version>${cayenne.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.connector.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.cayenne.plugins</groupId>
<artifactId>cayenne-modeler-maven-plugin</artifactId>
<version>${cayenne.version}</version>
</plugin>
</plugins>
</build>
</project>

9
apache-cayenne/src/main/java/com/baeldung/apachecayenne/persistent/Article.java Normal file
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package com.baeldung.apachecayenne.persistent;
import com.baeldung.apachecayenne.persistent.auto._Article;
public class Article extends _Article {
private static final long serialVersionUID = 1L;
}

9
apache-cayenne/src/main/java/com/baeldung/apachecayenne/persistent/Author.java Normal file
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package com.baeldung.apachecayenne.persistent;
import com.baeldung.apachecayenne.persistent.auto._Author;
public class Author extends _Author {
private static final long serialVersionUID = 1L;
}

47
apache-cayenne/src/main/java/com/baeldung/apachecayenne/persistent/auto/_Article.java Normal file
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package com.baeldung.apachecayenne.persistent.auto;
import org.apache.cayenne.CayenneDataObject;
import org.apache.cayenne.exp.Property;
import com.baeldung.apachecayenne.persistent.Author;
/**
* Class _Article was generated by Cayenne.
* It is probably a good idea to avoid changing this class manually,
* since it may be overwritten next time code is regenerated.
* If you need to make any customizations, please use subclass.
*/
public abstract class _Article extends CayenneDataObject {
private static final long serialVersionUID = 1L;
public static final String ID_PK_COLUMN = "id";
public static final Property<String> CONTENT = Property.create("content", String.class);
public static final Property<String> TITLE = Property.create("title", String.class);
public static final Property<Author> AUTHOR = Property.create("author", Author.class);
public void setContent(String content) {
writeProperty("content", content);
}
public String getContent() {
return (String)readProperty("content");
}
public void setTitle(String title) {
writeProperty("title", title);
}
public String getTitle() {
return (String)readProperty("title");
}
public void setAuthor(Author author) {
setToOneTarget("author", author, true);
}
public Author getAuthor() {
return (Author)readProperty("author");
}
}

52
apache-cayenne/src/main/java/com/baeldung/apachecayenne/persistent/auto/_Author.java Normal file
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package com.baeldung.apachecayenne.persistent.auto;
import java.util.List;
import org.apache.cayenne.CayenneDataObject;
import org.apache.cayenne.exp.Property;
import com.baeldung.apachecayenne.persistent.Article;
/**
* Class _Author was generated by Cayenne.
* It is probably a good idea to avoid changing this class manually,
* since it may be overwritten next time code is regenerated.
* If you need to make any customizations, please use subclass.
*/
public abstract class _Author extends CayenneDataObject {
private static final long serialVersionUID = 1L;
public static final String ID_PK_COLUMN = "id";
public static final Property<String> FIRSTNAME = Property.create("firstname", String.class);
public static final Property<String> LASTNAME = Property.create("lastname", String.class);
public static final Property<List<Article>> ARTICLES = Property.create("articles", List.class);
public void setFirstname(String firstname) {
writeProperty("firstname", firstname);
}
public String getFirstname() {
return (String)readProperty("firstname");
}
public void setLastname(String lastname) {
writeProperty("lastname", lastname);
}
public String getLastname() {
return (String)readProperty("lastname");
}
public void addToArticles(Article obj) {
addToManyTarget("articles", obj, true);
}
public void removeFromArticles(Article obj) {
removeToManyTarget("articles", obj, true);
}
@SuppressWarnings("unchecked")
public List<Article> getArticles() {
return (List<Article>)readProperty("articles");
}
}

17
apache-cayenne/src/main/resources/cayenne-project.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<domain project-version="9">
<map name="datamap"/>
<node name="datanode"
factory="org.apache.cayenne.configuration.server.XMLPoolingDataSourceFactory"
schema-update-strategy="org.apache.cayenne.access.dbsync.CreateIfNoSchemaStrategy"
>
<map-ref name="datamap"/>
<data-source>
<driver value="com.mysql.jdbc.Driver"/>
<url value="jdbc:mysql://localhost:3306/intro_cayenne"/>
<connectionPool min="1" max="1"/>
<login userName="root" password="root"/>
</data-source>
</node>
</domain>

34
apache-cayenne/src/main/resources/datamap.map.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<data-map xmlns="http://cayenne.apache.org/schema/9/modelMap"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://cayenne.apache.org/schema/9/modelMap http://cayenne.apache.org/schema/9/modelMap.xsd"
project-version="9">
<property name="defaultPackage" value="com.baeldung.apachecayenne.persistent"/>
<db-entity name="article" catalog="intro_cayenne">
<db-attribute name="author_id" type="INTEGER" isMandatory="true" length="10"/>
<db-attribute name="content" type="VARCHAR" isMandatory="true" length="254"/>
<db-attribute name="id" type="INTEGER" isPrimaryKey="true" isGenerated="true" isMandatory="true" length="10"/>
<db-attribute name="title" type="VARCHAR" isMandatory="true" length="254"/>
</db-entity>
<db-entity name="author" catalog="intro_cayenne">
<db-attribute name="firstname" type="VARCHAR" isMandatory="true" length="254"/>
<db-attribute name="id" type="INTEGER" isPrimaryKey="true" isGenerated="true" isMandatory="true" length="10"/>
<db-attribute name="lastname" type="VARCHAR" isMandatory="true" length="254"/>
</db-entity>
<obj-entity name="Article" className="com.baeldung.apachecayenne.persistent.Article" dbEntityName="article">
<obj-attribute name="content" type="java.lang.String" db-attribute-path="content"/>
<obj-attribute name="title" type="java.lang.String" db-attribute-path="title"/>
</obj-entity>
<obj-entity name="Author" className="com.baeldung.apachecayenne.persistent.Author" dbEntityName="author">
<obj-attribute name="firstname" type="java.lang.String" db-attribute-path="firstname"/>
<obj-attribute name="lastname" type="java.lang.String" db-attribute-path="lastname"/>
</obj-entity>
<db-relationship name="author" source="article" target="author" toMany="false">
<db-attribute-pair source="author_id" target="id"/>
</db-relationship>
<db-relationship name="articles" source="author" target="article" toMany="true">
<db-attribute-pair source="id" target="author_id"/>
</db-relationship>
<obj-relationship name="author" source="Article" target="Author" deleteRule="Nullify" db-relationship-path="author"/>
<obj-relationship name="articles" source="Author" target="Article" deleteRule="Deny" db-relationship-path="articles"/>
</data-map>

140
apache-cayenne/src/test/java/com/baeldung/apachecayenne/CayenneOperationTests.java Normal file
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package com.baeldung.apachecayenne;
import com.baeldung.apachecayenne.persistent.Article;
import com.baeldung.apachecayenne.persistent.Author;
import org.apache.cayenne.ObjectContext;
import org.apache.cayenne.configuration.server.ServerRuntime;
import org.apache.cayenne.query.ObjectSelect;
import org.apache.cayenne.query.SQLTemplate;
import org.junit.After;
import org.junit.BeforeClass;
import org.junit.Test;
import java.util.List;
import static junit.framework.Assert.assertEquals;
import static org.junit.Assert.assertNull;
public class CayenneOperationTests {
private static ObjectContext context = null;
@BeforeClass
public static void setupTheCayenneContext(){
ServerRuntime cayenneRuntime = ServerRuntime.builder()
.addConfig("cayenne-project.xml")
.build();
context = cayenneRuntime.newContext();
}
@After
public void deleteAllRecords(){
SQLTemplate deleteArticles = new SQLTemplate(Article.class, "delete from article");
SQLTemplate deleteAuthors = new SQLTemplate(Author.class, "delete from author");
context.performGenericQuery(deleteArticles);
context.performGenericQuery(deleteAuthors);
}
@Test
public void givenAuthor_whenInsert_thenWeGetOneRecordInTheDatabase(){
Author author = context.newObject(Author.class);
author.setFirstname("Paul");
author.setLastname("Smith");
context.commitChanges();
long records = ObjectSelect.dataRowQuery(Author.class).selectCount(context);
assertEquals(1, records);
}
@Test
public void givenAuthor_whenInsert_andQueryByFirstName_thenWeGetTheAuthor(){
Author author = context.newObject(Author.class);
author.setFirstname("Paul");
author.setLastname("Smith");
context.commitChanges();
Author expectedAuthor = ObjectSelect.query(Author.class)
.where(Author.FIRSTNAME.eq("Paul"))
.selectOne(context);
assertEquals("Paul", expectedAuthor.getFirstname());
assertEquals("Smith", expectedAuthor.getLastname());
}
@Test
public void givenTwoAuthor_whenInsert_andQueryAll_thenWeGetTwoAuthors(){
Author firstAuthor = context.newObject(Author.class);
firstAuthor.setFirstname("Paul");
firstAuthor.setLastname("Smith");
Author secondAuthor = context.newObject(Author.class);
secondAuthor.setFirstname("Ludovic");
secondAuthor.setLastname("Garcia");
context.commitChanges();
List<Author> authors = ObjectSelect.query(Author.class).select(context);
assertEquals(2, authors.size());
}
@Test
public void givenAuthor_whenUpdating_thenWeGetAnUpatedeAuthor(){
Author author = context.newObject(Author.class);
author.setFirstname("Paul");
author.setLastname("Smith");
context.commitChanges();
Author expectedAuthor = ObjectSelect.query(Author.class)
.where(Author.FIRSTNAME.eq("Paul"))
.selectOne(context);
expectedAuthor.setLastname("Smith 2");
context.commitChanges();
assertEquals(author.getFirstname(), expectedAuthor.getFirstname());
assertEquals(author.getLastname(), expectedAuthor.getLastname());
}
@Test
public void givenAuthor_whenDeleting_thenWeLostHisDetails(){
Author author = context.newObject(Author.class);
author.setFirstname("Paul");
author.setLastname("Smith");
context.commitChanges();
Author savedAuthor = ObjectSelect.query(Author.class)
.where(Author.FIRSTNAME.eq("Paul")).selectOne(context);
if(savedAuthor != null) {
context.deleteObjects(author);
context.commitChanges();
}
Author expectedAuthor = ObjectSelect.query(Author.class)
.where(Author.FIRSTNAME.eq("Paul")).selectOne(context);
assertNull(expectedAuthor);
}
@Test
public void givenAuthor_whenAttachingToArticle_thenTheRelationIsMade(){
Author author = context.newObject(Author.class);
author.setFirstname("Paul");
author.setLastname("Smith");
Article article = context.newObject(Article.class);
article.setTitle("My post title");
article.setContent("The content");
article.setAuthor(author);
context.commitChanges();
Author expectedAuthor = ObjectSelect.query(Author.class)
.where(Author.LASTNAME.eq("Smith"))
.selectOne(context);
Article expectedArticle = (expectedAuthor.getArticles()).get(0);
assertEquals(article.getTitle(), expectedArticle.getTitle());
}
}

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libraries/pom.xml
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<eclipse-collections.version>8.2.0</eclipse-collections.version>
<streamex.version>0.6.5</streamex.version>
<vavr.version>0.9.0</vavr.version>
<geotools.version>15.2</geotools.version>
<joda-time.version>2.9.9</joda-time.version>
<hirondelle-date4j.version>1.5.1</hirondelle-date4j.version>
<retrofit.version>2.3.0</retrofit.version>

1
pom.xml
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</properties>
<modules>
<module>apache-cayenne</module>
<module>aws</module>
<module>akka-streams</module>
<module>algorithms</module>