Raible's Wiki: CreateDAO

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To start, create a PersonDaoTest.java class in the test/dao/**/persistence directory. This class should extend [BaseDaoTestCase|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/persistence/BaseDaoTestCase.java.html], which already exists in this package. This parent class is used to load [Spring's|http://www.springframework.org] ApplicationContext (since Spring binds the layers together), and for automatically loading a .properties file (ResourceBundle) that has the same name as your *Test.class. In this example, if you put a PersonDaoTest.properties file in the same directory as PersonDaoTest.java, this file's properties will be available via an "rb" variable.

To start, create a PersonDaoTest.java class in the test/dao/**/dao directory. This class should extend [BaseDaoTestCase|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/dao/BaseDaoTestCase.java.html], which already exists in this package. This parent class is used to load [Spring's|http://www.springframework.org] ApplicationContext (since Spring binds the layers together), and for automatically loading a .properties file (ResourceBundle) that has the same name as your *Test.class. In this example, if you put a PersonDaoTest.properties file in the same directory as PersonDaoTest.java, this file's properties will be available via an "rb" variable.

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package org.appfuse.persistence;

package org.appfuse.dao;

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The code you see above is what we need for a basic JUnit test that initializes and destroys our PersonDao. The "ctx" object is a reference to Spring's ApplicationContext, which is initialized in a static block of the [BaseDaoTestCase's|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/persistence/BaseDaoTestCase.java.html] class.

The code you see above is what we need for a basic JUnit test that initializes and destroys our PersonDao. The "ctx" object is a reference to Spring's ApplicationContext, which is initialized in a static block of the [BaseDaoTestCase's|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/dao/BaseDaoTestCase.java.html] class.

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First off, create a PersonDao.java interface in the src/dao/**/persistence directory and specify the basic CRUD methods for any implementation classes. ''I've eliminated the JavaDocs in the class below for display purposes.''

First off, create a PersonDao.java interface in the src/dao/**/dao directory and specify the basic CRUD methods for any implementation classes. ''I've eliminated the JavaDocs in the class below for display purposes.''

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package org.appfuse.persistence;

package org.appfuse.dao;

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Let's start by creating a PersonDaoHibernate class that implements the methods in PersonDao and uses Hibernate to get/save/delete the Person object. To do this, create a new class in src/dao/**/persistence/hibernate and name it PersonDAOHibernate.java. It should extend [BaseDaoHibernate|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/persistence/BaseDAOHibernate.java.html] and implement PersonDAO. ''Javadocs eliminated for brevity.''

Let's start by creating a PersonDaoHibernate class that implements the methods in PersonDao and uses Hibernate to get/save/delete the Person object. To do this, create a new class in src/dao/**/dao/hibernate and name it PersonDAOHibernate.java. It should extend [BaseDaoHibernate|http://raibledesigns.com/downloads/appfuse/api/org/appfuse/dao/BaseDAOHibernate.java.html] and implement PersonDAO. ''Javadocs eliminated for brevity.''

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package org.appfuse.persistence.hibernate;

package org.appfuse.dao.hibernate;

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import org.appfuse.persistence.PersonDao;

import org.appfuse.dao.PersonDao;

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Example example = Example.create(person)

.excludeZeroes() //exclude zero valued properties

.ignoreCase(); //perform case insensitive string comparisons

try {

return getSession().createCriteria(Person.class)

.add(example)

.list();

} catch (Exception e) {

throw new DAOException(e);

}

return new ArrayList();

Example example = Example.create(person)

.excludeZeroes() //exclude zero valued properties

.ignoreCase(); //perform case insensitive string comparisons

try {

return getSession().createCriteria(Person.class)

.add(example)

.list();

} catch (Exception e) {

throw new DAOException(e);

}

return new ArrayList();

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First, we need to tell Spring where the Hibernate mapping file is located. To do this, open src/dao/**/persistence/hibernate/applicationContext-hibernate.xml and add {{Person.hbm.xml}} to the following code block.

First, we need to tell Spring where the Hibernate mapping file is located. To do this, open src/dao/**/dao/hibernate/applicationContext-hibernate.xml and add {{Person.hbm.xml}} to the following code block.

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