birt ean 128

birt gs1 128

birt ean 128

birt ean 128

birt ean 128

birt ean 128,

birt ean 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt ean 128,

birt ean 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt gs1 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt ean 128,
birt gs1 128,
birt ean 128,
birt ean 128,
birt gs1 128,
birt gs1 128,
birt ean 128,

Now all unqualified class names that appear in this mapping document will be prefixed with the declared package name. We assume this setting in all mapping examples in this book and use unqualified names for CaveatEmptor model classes. Names of classes and tables must be selected carefully. However, a name you ve chosen may be reserved by the SQL database system, so the name has to be quoted.

And safety goggles!

By default, Hibernate doesn t quote table and column names in the generated SQL. This makes the SQL slightly more readable, and it also allows you to take advantage of the fact that most SQL databases are case insensitive when comparing unquoted identifiers. From time to time, especially in legacy databases, you encounter identifiers with strange characters or whitespace, or you wish to force case sensitivity. Or, if you rely on Hibernate s defaults, a class or property name in Java may be automatically translated to a table or column name that isn t allowed in your database management system. For example, the User class is mapped to a USER table, which is usually a reserved keyword in SQL databases. Hibernate doesn t know the SQL keywords of any DBMS product, so the database system throws an exception at startup or runtime. If you quote a table or column name with backticks in the mapping document, Hibernate always quotes this identifier in the generated SQL. The following property declaration forces Hibernate to generate SQL with the quoted column name "DESCRIPTION". Hibernate also knows that Microsoft SQL Server needs the variation [DESCRIPTION] and that MySQL requires `DESCRIPTION`.

There are several key ideas that we want to convey with our build file examples: Begin with the end in mind. Integrate tests with the build. Support automated deployment. Make it portable. Allow for customizations.

There is no way, apart from quoting all table and column names in backticks, to force Hibernate to use quoted identifiers everywhere. You should consider renaming tables or columns with reserved keyword names whenever possible. Quoting with backticks works with annotation mappings, but it s an implementation detail of Hibernate and not part of the JPA specification.

We often encounter organizations with strict conventions for database table and column names. Hibernate provides a feature that allows you to enforce naming standards automatically. Suppose that all table names in CaveatEmptor should follow the pattern CE_<table name>. One solution is to manually specify a table attribute on all <class> and collection elements in the mapping files. However, this approach is time-consuming and easily forgotten. Instead, you can implement Hibernate s NamingStrategy interface, as in listing 4.1.

We achieve each of these by using features such as properties, datatypes, and target dependencies. 8.5.1 Begin with the end in mind Your build file exists to build something. Start with that end result and work backwards as you write your targets. The goal of our Ant task build file is to build a distributable JAR library that we can use in other build files. We started with the dist target of listing 8.1 and created its dependent targets such as compile. We want the JAR to contain a dynamically built taskdef.properties file, so we also depend on a target that creates it using XDoclet. Integrate tests with the build We cannot overemphasize the importance of integrated and automated testing. By putting testing into your build processes early, developers can write and execute tests without having to worry about the mechanics of how to run them. The easier you make testing, the more tests get written, and the more tests get run. The result is that your project will be of higher quality. Support automated deployment Automating deployment early in the project is as important as being test-centric. By ensuring your code goes from source to deployment server at all stages of the project you can rest easy that on the delivery date, your project will deploy successfully. Why wouldn t it With continuous deployment, you have been deploying your application since you wrote the first line of code. Make it portable We re writing Java code, and as such we want to make sure our code and builds work in other environments from the start. Ant runs on many platforms, but be wary of using tasks, such as <exec>, that can prevent your build files from running on other