Which hibernate jars need

Not all conversions is implemented contributions welcome , so some hand editing might be necessary. Can be used for verifying the mappings and for basic data extraction. Currently one session is opened and used for all queries and the query is executed via the list method. In the future more options might become available, like performing executeUpdate , use named queries etc. This can be used to verify that queries can actually be performed. In this example we also let the output be dumped to queryresult.

Previous versions of the tools used Velocity. We are now using Freemarker which provides us much better exception and error handling. Exporters can be controlled by user properties. If the templates need to access some user class it is possible by specifying a "toolclass" in the properties. This is usefull to delegate logic and code generation to java code instead of placing such logic in the templates.

It is from this object e. To govern this process Hibernate uses a reverse engineering strategy. A reverse engineering strategy is mainly called to provide more java like names for tables, column and foreignkeys into classes, properties and associations. It also used to provide mappings from SQL types to Hibernate types. The strategy can be customized by the user. The user can even provide its own custom reverse engineering strategy if the provided strategy is not enough, or simply just provide a small part of the strategy and delegate the rest to the default strategy.

The default strategy uses some rules for mapping JDBC artifact names to java artifact names. It is the default strategy that uses the packagename attribute to convert a table name to a fully qualified classname. To have fine control over the process a hibernate. In this file you can specify type mappings and table filtering. This file can be created by hand its just basic XML or you can use the Hibernate plugins which have a specialized editor.

The following is an example of a reveng. Following the example is more details about the format. It is possible to have multiple schema-selection 's to support multi-schema reading or simply to limit the processing to very specific tables.

The number of attributes specificed and the sequence of the sql-type 's is important. Meaning that Hibernate will search for the most specific first, and if no specific match is found it will seek from top to bottom when trying to resolve a type mapping. The following is an example of a type-mapping which shows the flexibility and the importance of ordering of the type mappings. Amongst other things it allow control over the naming of a class for the table, specify which identifier generator should be used for the primary key etc.

Has to be specified if you are reverse engineering multiple catalogs or if it is not equal to hiberante. Has to be specified if you are reverse engineering multiple schemas or if it is not equal to hiberante. Default name is camelcase version of the table name. The class name is any hibernate short hand name or fully quailfied class name for an identifier strategy. A key-column is same as column, but does not have the exclude property. A value from java.

One for allowing to define foreign-keys in databases that does not support them or does not have them defined in their schema. Secondly, to allow defining the name of the resulting properties many-to-one and one-to-many's.

Important when naming many-to-one and set. It is the constraint-name that is used to link the processed foreign-keys with the resulting property names. Only relevant if you want to explicitly define a foreign key. Exclude can be used to explicitly define that it should be created or not.

It is possible to implement a user strategy. Such strategy must implement org. It is recommended that one uses the DelegatingReverseEngineeringStrategy and provide a public constructor which takes another ReverseEngineeringStrategy as argument. This will allow you to only implement the relevant methods and provide a fallback strategy. Example of custom delegating strategy which converts all column names that ends with "PK" into a property named "id".

This is done via the class org. The default implementation can be replaced with an alternative implementation by setting the property hibernatetool. This can be used to provide database specific optimized metadata reading. The following section describes the possible meta tags and their use. The above hbm. Notice the Javadoc comment and the protected set methods:.

What does that mean? It means that if you e. Now all classes defined in that hbm. Thus it can also e. If we have two entities with a bi-directional association between them and define at class scope level the meta attributes: use-in-string, use-in-equals :. Therefore it is not a good practice to put at class scope such meta attributes, unless you are defining a class without bi-directional associations.

We recomend instead to add the meta attributes at the property level:. This is important because Java's hashbased collections, such as java. Set relies on equals and hashcode to be correct and not change for objects in the set; this can be a problem if the id gets assigned for an object after you inserted it into a set.

Here you can get more in-depth explanation on the subject of equals and hashcode. This section shows an example for using meta attributes including userspecific attributes together with the code generation features in Hibernate Tools.

The usecase being implemented is to automatically insert some pre- and post-conditions into the getter and setters of the generated POJO. A possibly solution for this is to modify the freemarker templates responsable for generating the POJO's.

If you look inside hibernate-tools. Extract the PojoPropertyAccessor. As an examlpe let us add a pre-condition for property name preventing no Person can have an empty name. So we have to modify the Person. Note that we are referring to "firstName" directly and this is the parameter name not the actual field name. If you want to refer the field you have to use "this. Finally we have to generate the Person. Hibernate Tools. Download and install Hibernate Tools 1. Eclipse IDE 1. Usage of Eclipse WTP 1.

Code generation architecture 2. Hibernate Meta Model 2. Eclipse Plugins 3. Introduction 3. Creating a Hibernate configuration file 3. Reverse engineering and code generation 3. Code Generation Launcher 3.

Hibernate Mapping and Configuration File Editor 3. Configuration property completion 3. Viewing the entity structure 3. Prototyping Queries 3. Dynamic Query Translator 3. Properties view 3. Ant Tools 4. Example 4. Using properties to configure Exporters 4. Getting access to user specific classes 4. Controlling reverse engineering 5. Example 5. Custom strategy 5. Recomendations 6. Dangers of a class level use-in-string and use-in-equals meta attributes when having bi-directional associations 6.

Chapter 1. Download and install Hibernate Tools. JBoss Tools. Eclipse IDE. Usage of Eclipse WTP. Chapter 2. Code generation architecture.

Hibernate Meta Model. Chapter 3. Eclipse Plugins. Creating a Hibernate configuration file. Creating a Hibernate Console configuration. Note The wizard will look at the current selection in the IDE and try and auto-detect the settings which you then can just approve or modify to suit your needs. Table 3. Hibernate Console Configuration Parameters Parameter Description Auto detected value Name The unique name of the console configuration Name of the selected project Project The name of a java project which classpath should be used in the console configuration Name of the selected project Type Choose between "Core", "Annotations" and "JPA".

No default value Property file Path to a hibernate. No default value Entity resolver Fully qualified classname of a custom EntityResolver. No default value. Hibernate Console Configuration Mappings Parameter Description Auto detected value Mapping files List of additional mapping files that should be loaded. Reverse engineering and code generation. According to the book there are many essential jars we need to add to the class path like Anttr Improve this question.

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Why do we need hibernate-jpa All jars you need are right there, in the. Ranga Reddy Ranga Reddy 2, 3 3 gold badges 26 26 silver badges 36 36 bronze badges. Strong Liu Strong Liu 6 6 silver badges 4 4 bronze badges. Atul Sharma Atul Sharma 41 1 1 silver badge 6 6 bronze badges. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.

Email Required, but never shown. The Overflow Blog. Hi, I have added all the jars as mentioned in the above post but still i am getting an error SLF4J: Failed to load class "org. Exception in thread "main" java.

ClassNotFoundException: org. StaticLoggerBinder at java. Exception in thread "main" javax. Simon Prinzleve. Hi Vallaru, I got the same errors - especially the ones about the slf4j. Adding the right jars for slf4j solved the error.

They are somehow called from inside hibernate - adding a catch Throwable Ryann Ong. I am also new to hibernate but i think you need to use slf4j library and log4j library. If im not mistaken, these two libraries are used for logging and console output for hibernate. Try adding them to your libraries or classpath as well. Just as an update to this little thread, I thought some people might be interested in some changes to the required jar files from Hibernate 3. I've posted on this JavaRanch thread, but I thought I'd put it here for quick reference.

The screenshots were taken from this tutorial, which includes some CBT videos as well: Slingshot Yourself into Hibernate 3. You can find these at hibernate. And while this screenshot was taken from Eclipse, what's important is all of the Jar files.