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package javax.annotation.sql;
import java.lang.annotation.Target;
import java.lang.annotation.Retention;
import java.lang.annotation.ElementType;
import java.lang.annotation.RetentionPolicy;
/**
* Annotation used to define a container <code>DataSource</code> and
* be registered with JNDI. The <code>DataSource</code> may be configured by
* setting the annotation elements for commonly used <code>DataSource</code>
* properties. Additional standard and vendor-specific properties may be
* specified using the <code>properties</code> element.
* <p>
*
* The data source will be registered under the name specified in the
* <code>name</code> element. It may be defined to be in any valid
* <code>Java EE</code> namespace, and will determine the accessibility of
* the data source from other components.
* <p>
* A JDBC driver implementation class of the appropriate type, either
* <code>DataSource</code>, <code>ConnectionPoolDataSource</code>, or
* <code>XADataSource</code>, must be indicated by the <code>className</code>
* element. The availability of the driver class will be assumed at runtime.
*<p>
* The <code>url</code> property should not be specified in conjunction with
* other standard properties for defining the connectivity to the database.
* If the <code>url</code> property is specified along with other standard
* <code>DataSource</code> properties
* such as <code>serverName</code> and <code>portNumber</code>, the more
* specific properties will take precedence and <code>url</code> will be
* ignored.
* <p>
* Vendors are not required to support properties that do not normally
* apply to a specific data source type. For example, specifying the
* <code>transactional</code> property to be <code>true</code> but supplying
* a value for <code>className</code> that implements a data source class
* other than <code>XADataSource</code> may not be supported.
* <p>
* Vendor-specific properties may be combined with or used to
* override standard data source properties defined using this annotation.
* <p>
* <code>DataSource</code> properties that are specified and are not supported
* in a given configuration or cannot be mapped to a vendor specific
* configuration property may be ignored.
* <p>
* Examples:
* <br>
* <pre>
* @DataSourceDefinition(name="java:global/MyApp/MyDataSource",
* className="com.foobar.MyDataSource",
* portNumber=6689,
* serverName="myserver.com",
* user="lance",
* password="secret"
* )
*
* </pre>
* <p>
* Using a <code>URL</code>:
* <br>
* <pre>
* @DataSourceDefinition(name="java:global/MyApp/MyDataSource",
* className="org.apache.derby.jdbc.ClientDataSource",
* url="jdbc:derby://localhost:1527/myDB",
* user="lance",
* password="secret"
* )
* </pre>
* <p>
* An example lookup of the {@link DataSource} from an EJB:
* <pre>
* @Stateless
* public class MyStatelessEJB {
* @Resource(lookup="java:global/MyApp/myDataSource")
* DataSource myDB;
* ...
* }
* </pre>
* <p>
* @see javax.sql.DataSource
* @see javax.sql.XADataSource
* @see javax.sql.ConnectionPoolDataSource
* @since Common Annotations 1.1
*/
@Target({ElementType.TYPE})
@Retention(RetentionPolicy.RUNTIME)
public @interface DataSourceDefinition {
/**
* JNDI name by which the data source will be registered.
* @since 1.1
*/
String name();
/**
* DataSource implementation class name which implements:
* <code>javax.sql.DataSource</code> or <code>javax.sql.XADataSource</code>
* or <code>javax.sql.ConnectionPoolDataSource</code>.
* @since 1.1
*/
String className();
/**
* Description of this data source
* @since 1.1
*/
String description() default "";
/**
* A JDBC URL. If the <code>url</code> property is specified along with
* other standard <code>DataSource</code> properties
* such as <code>serverName</code> and <code>portNumber</code>, the more
* specific properties will take precedence and <code>url</code> will be
* ignored.
* @since 1.1
*/
String url() default "";
/**
* User name to use for connection authentication.
* @since 1.1
*/
String user() default "";
/**
* Password to use for connection authentication.
* @since 1.1
*/
String password() default "";
/**
* Name of a database on a server.
* @since 1.1
*/
String databaseName() default "";
/**
* Port number where a server is listening for requests.
* @since 1.1
*/
int portNumber() default -1;
/**
* Database server name.
* @since 1.1
*/
String serverName() default "localhost";
/**
* Isolation level for connections. The Isolation level
* must be one of the following:
* <p>
* <ul>
* <li>Connection.TRANSACTION_NONE,
* <li>Connection.TRANSACTION_READ_ UNCOMMITTED,
* <li>Connection.TRANSACTION_READ_COMMITTED,
* <li>Connection.TRANSACTION_REPEATABLE_READ,
* <li>Connection.TRANSACTION_SERIALIZABLE
*</ul>
* <p>
* Default is vendor-specific.
* @since 1.1
*/
int isolationLevel() default -1;
/**
* Set to <code>false</code> if connections should not participate
* in transactions.
* <p>
* Default is to enlist in a transaction when one is active or becomes
* active.
* @since 1.1
*/
boolean transactional() default true;
/**
* Number of connections that should be created when a connection pool
* is initialized.
* <p>
* Default is vendor-specific
* @since 1.1
*/
int initialPoolSize() default -1;
/**
* Maximum number of connections that should be concurrently allocated for a
* connection pool.
* <p>
* Default is vendor-specific.
* @since 1.1
*/
int maxPoolSize() default -1;
/**
* Minimum number of connections that should be allocated for a
* connection pool.
* <p>
* Default is vendor-specific.
* @since 1.1
*/
int minPoolSize() default -1;
/**
* The number of seconds that a physical connection
* should remain unused in the pool before the
* connection is closed for a connection pool.
* <p>
* Default is vendor-specific
* @since 1.1
*/
int maxIdleTime() default -1;
/**
* The total number of statements that a connection pool should keep open.
* A value of 0 indicates that the caching of statements is disabled for
* a connection pool.
* <p>
* Default is vendor-specific
* @since 1.1
*/
int maxStatements() default -1;
/**
* Used to specify Vendor specific properties and less commonly
* used <code>DataSource</code> properties such as:
* <p>
* <ul>
* <li>dataSourceName
* <li>networkProtocol
* <li>propertyCycle
* <li>roleName
* </ul>
* <p>
* Properties are specified using the format:
* <i>propertyName=propertyValue</i> with one property per array element.
* @since 1.1
*/
String[] properties() default {};
/**
* Sets the maximum time in seconds that this data source will wait while
* attempting to connect to a database. A value of zero specifies that
* the timeout is the default system timeout if there is one; otherwise,
* it specifies that there is no timeout.
* <p>
* Default is vendor-specific.
* @since 1.1
*/
int loginTimeout() default 0;
}