uk.org.ogsadai.activity.sql.parameters
Interface ParameterInput

All Known Implementing Classes:

ResultSetInput, StreamInput, ValueInput

public interface ParameterInput

Interface for classes managing input to a parameterised SQL statement.

Author:

The OGSA-DAI Project Team.

Method Summary

java.lang.Object	getNextObject() Get the next value for the parameter.
void	initialise(int position, ActivityContext context) Optionally initialise a parameter using the current activity context.
boolean	isDone() Indicates whether the values have all been provided.

Method Detail

initialise

public void initialise(int position,
                       ActivityContext context)
                throws ParameterSetupException

Optionally initialise a parameter using the current activity context. Useful if the activity receives its values from another activity's output.

Parameters:

position - Current position of this parameter

context - Activity context

Throws:

ParameterSetupException - If some error occurs due to the client's settings.

getNextObject

public java.lang.Object getNextObject()
                               throws java.util.NoSuchElementException,
                                      ParameterAccessException

Get the next value for the parameter.

Throws:

java.util.NoSuchElementException - If there are no more values.

ParameterAccessException - If a problem occurs.

isDone

public boolean isDone()

Indicates whether the values have all been provided.

Returns:

true if so and false otherwise.