sql:connect

Creates a database connection.

Attributes

`driver?`	`{ eqname }`	The name of the JDBC driver class to be used. From Saxon 10.5 this is no longer needed, and is ignored if specified.
`database`	`{ eqname }`	The name (URL) of the database. Must be a name that JDBC can associate with an actual database. An example might be `jdbc:derby:codejava/webdb;create=true`.
`user?`	`{ expression }`	The user name if required for connection (and if not included in the database URL).
`password?`	`{ expression }`	The password if required for connection (and if not included in the database URL).
`auto-commit?`	`{ boolean }`	If the value is `yes`, then this causes a call of `connection.setAutoCommit()` on the underlying JDBC connection.

Details

The sql:connect instruction returns a database connection as a value, specifically a value of type "external object", which can be referred to using the type java:java.sql.Connection. Typically the value will be assigned to a variable using the construct:

<xsl:variable name="connection" as="java:java.sql.Connection" xmlns:java="http://saxon.sf.net/java-type"> <sql:connect database="jdbc:odbc:testdb" xsl:extension-element-prefixes="sql"/> </xsl:variable>

This can be a global variable or a local variable; if local, it can be passed to other templates as a parameter in the normal way. The connection is used on instructions such as sql:insert and sql:query with an attribute such as connection="$connection"; the value of the connection attribute is an expression that returns a database connection object.