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The first classpath includes the libraries we depend upon to build, and the second appends the code just written. The advantage of this approach is ease of maintenance; any new library needed at compile time automatically propagates to the run time classpath. With the new classpath defined, we can modify the <java> task and run our program:

A JavaScript library is bundled with Seam. With this Remoting framework, you can call Seam components from client-side code easily. Seam can handle any Ajax requests to your server. The Seam Application Framework provides out-of-the-box components that enable you to write an easily extendable CRUD database application in minutes. Seam components are easily testable, with or without an (embeddable) container. Seam makes integration and functional testing extremely easy with the SeamTest superclass for TestNG; this class allows you to script interactions that simulate a web browser.

<java classname="org.example.antbook.Search" classpathref="run.classpath" > <arg file="${index.dir}"/> <arg value="WAR"/> </java>

If you want to continue with Seam and explore other features that didn t make it into this list, continue with the tutorials in the Seam reference documentation.

The successful output of this task delivers the results we want: all references to the word WAR in the Ant documentation.

A table, with its rows and columns, is a familiar sight to anyone who has worked with an SQL database Sometimes you ll see tables referred to as relations, rows as tuples, and columns as attributes This is the language of the relational data model, the mathematical model that SQL databases (imperfectly) implement The relational model allows you to define data structures and constraints that guarantee the integrity of your data (for example, by disallowing values that don t accord with your business rules) The relational model also defines the relational operations of restriction, projection, Cartesian product, and relational join [Codd, 1970] These operations let you do useful things with your data, such as summarizing or navigating it Each of the operations produces a new table from a given table or combination of tables.

SQL is a language for expressing these operations in your application (therefore called a data language) and for defining the base tables on which the operations are performed You write SQL data definition language (DDL) statements to create and manage the tables We say that DDL defines the database schema Statements such as CREATE TABLE, ALTER TABLE, and CREATE SEQUENCE belong to DDL You write SQL data manipulation language (DML) statements to work with your data at runtime Let s describe these DML operations in the context of some tables of the CaveatEmptor application In CaveatEmptor, you naturally have entities like item, user, and bid We assume that the SQL database schema for this application includes an ITEM table and a BID table, as shown in figure A1 The datatypes, tables, and constraints for this schema are created with SQL DDL (CREATE and ALTER operations).

run-search: [echo] [java] [java] [java] [java] [java] [java] [java] [java] [java] running a search 1: C:\jakarta-ant\docs\manual\CoreTasks\war.html 2: C:\jakarta-ant\docs\manual\coretasklist.html 3: C:\jakarta-ant\docs\manual\CoreTasks\unzip.html 4: C:\jakarta-ant\docs\manual\CoreTasks\ear.html 5: C:\jakarta-ant\docs\manual\OptionalTasks\jspc.html 6: C:\jakarta-ant\docs\manual\CoreTasks\overview.html 7: C:\jakarta-ant\docs\ant_in_anger.html 8: C:\jakarta-ant\docs\external.html files found: 8

Insertion is the operation of creating a new table from an old table by adding a row SQL databases perform this operation in place, so the new row is added to the existing table:.

Arguments The most important optional parameter of the <java> task is the nested argument list. You can name arguments by a single value, a line of text, a file to resolve prior to use in the argument list, or a path. You specify these in the <arg> element of the task, which supports the four attributes listed in table 5.1. Ant passes the arguments to the Java program in the order they are declared.

insert into ITEM values (4, 'Fum', 45.0)

Table 5.1 The attributes of Java s <arg> element. Each <arg> may use only one at a time. Meaning String value File or directory to resolve to an absolute location before invocation Complete line to pass to the program A string containing files or directories separated by colons or semicolons

An SQL update modifies an existing row:

A deletion removes a row: