DB2 Version 9.7 for Linux, UNIX, and Windows

Interfaces and classes in the sqlj.runtime package

The sqlj.runtime package defines the run-time classes and interfaces that are used directly or indirectly by the SQLJ programmer.

Classes such as AsciiStream are used directly by the SQLJ programmer. Interfaces such as ResultSetIterator are implemented as part of generated class declarations.

sqlj.runtime interfaces

The following table summarizes the interfaces in sqlj.runtime.

Table 1. Summary of sqlj.runtime interfaces
Interface name	Purpose
ConnectionContext	Manages the SQL operations that are performed during a connection to a data source.
ForUpdate	Implemented by iterators that are used in a positioned UPDATE or DELETE statement.
NamedIterator	Implemented by iterators that are declared as named iterators.
PositionedIterator	Implemented by iterators that are declared as positioned iterators.
ResultSetIterator	Implemented by all iterators to allow query results to be processed using a JDBC ResultSet.
Scrollable	Provides a set of methods for manipulating scrollable iterators.

sqlj.runtime classes

The following table summarizes the classes in sqlj.runtime.

Table 2. Summary of sqlj.runtime classes
Class name	Purpose
AsciiStream	A class for handling an input stream whose bytes should be interpreted as ASCII.
BinaryStream	A class for handling an input stream whose bytes should be interpreted as binary.
CharacterStream	A class for handling an input stream whose bytes should be interpreted as Character.
DefaultRuntime	Implemented by SQLJ to satisfy the expected runtime behavior of SQLJ for most JVM environments. This class is for internal use only and is not described in this documentation.
ExecutionContext	Implemented when an SQLJ execution context is declared, to control the execution of SQL operations.
Indicator	Defines constants for indicator variable values.
RuntimeContext	Defines system-specific services that are provided by the runtime environment. This class is for internal use only and is not described in this documentation.
SQLNullException	Derived from the java.sql.SQLException class. An sqlj.runtime.SQLNullException is thrown when an SQL NULL value is fetched into a host identifier with a Java™ primitive type.
StreamWrapper	Wraps a java.io.InputStream instance.
UnicodeStream	A class for handling an input stream whose bytes should be interpreted as Unicode.