Java tutorial
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If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package javax.resource.cci; import javax.resource.ResourceException; import javax.resource.NotSupportedException; /** The <code>javax.resource.cci.Interaction</code> enables a component to * execute EIS functions. An Interaction instance supports the following ways * of interacting with an EIS instance: * <UL> * <LI><code>execute</code> method that takes an input Record, output * Record and an InteractionSpec. This method executes the EIS * function represented by the InteractionSpec and updates the * output Record * <LI><code>execute</code> method that takes an input Record and an * InteractionSpec. This method implementation executes the EIS * function represented by the InteractionSpec and produces the * output Record as a return value. * </UL> * <p>An Interaction instance is created from a Connection and is required * to maintain its association with the Connection instance. The close method * releases all resources maintained by the resource adapter for the * Interaction. The close of an Interaction instance should not close the * associated Connection instance. * * @author Rahul Sharma * @version 0.8 * @since 0.8 * @see java.sql.ResultSet **/ public interface Interaction { /** Closes the current Interaction and release all the resources * held for this instance by the resource adapter. The close of an * Interaction instance does not close the associated Connection * instance. It is recommended that Interaction instances be * closed explicitly to free any held resources. * * @throws ResourceException Failed to close the Interaction * instance. Invoking close on an * already closed Interaction should * also throw this exception. **/ public void close() throws ResourceException; /** Gets the Connection associated with the Interaction. * * @return Connection instance associated with the Interaction **/ public Connection getConnection(); /** Executes an interaction represented by the InteractionSpec. * This form of invocation takes an input Record and updates * the output Record. * * @param ispec InteractionSpec representing a target EIS * data/function module * @param input Input Record * @param output Output Record * * @return true if execution of the EIS function has been * successful and output Record has been updated; false * otherwise * * @throws ResourceException Exception if execute operation * fails. Examples of error cases * are: * <UL> * <LI> Resource adapter internal, EIS-specific or * communication error * <LI> Invalid specification of an InteractionSpec, * input or output record structure * <LI> Errors in use of input or output Record * <LI> Invalid connection associated with this * Interaction * </UL> * @throws NotSupportedException Operation not supported * **/ public boolean execute(InteractionSpec ispec, Record input, Record output) throws ResourceException; /** Executes an interaction represented by the InteractionSpec. * This form of invocation takes an input Record and returns an * output Record if the execution of the Interaction has been * successfull. * * @param ispec InteractionSpec representing a target EIS * data/function module * @param input Input Record * @return output Record if execution of the EIS function has been * successful; null otherwise * * @throws ResourceException Exception if execute operation * fails. Examples of error cases * are: * <UL> * <LI> Resource adapter internal, EIS-specific or * communication error * <LI> Invalid specification of an InteractionSpec * or input record structure * <LI> Errors in use of input Record or creation * of an output Record * <LI> Invalid connection associated with this * Interaction * </UL> * @throws NotSupportedException Operation not supported **/ public Record execute(InteractionSpec ispec, Record input) throws ResourceException; /** Gets the first ResourceWarning from the chain of warnings * associated with this Interaction instance. * * @return ResourceWarning at top of the warning chain * @throws ResourceException Failed to get ResourceWarnings * associated with Interaction **/ public ResourceWarning getWarnings() throws ResourceException; /** Clears all the warning reported by this Interaction instance. After * a call to this method, the method getWarnings will return null * until a new warning is reported for this Interaction. * * @throws ResourceException Failed to clear ResourceWarnings * associated with Interaction **/ public void clearWarnings() throws ResourceException; }