org.pentaho.di.core.parameters
Interface NamedParams

All Known Implementing Classes:

Job, JobMeta, NamedParamsDefault, Trans, TransMeta

public interface NamedParams

Interface to implement named parameters.

Author:

Sven Boden

Method Summary

void	activateParameters() Activate the currently set parameters
void	addParameterDefinition(String key, String defValue, String description) Add a parameter definition to this set.
void	clearParameters() Clear all parameters
void	copyParametersFrom(NamedParams params) Copy params to these named parameters (clearing out first).
void	eraseParameters() Clear the values.
String	getParameterDefault(String key) Get the default value of a parameter.
String	getParameterDescription(String key) Get the description of a parameter.
String	getParameterValue(String key) Get the value of a parameter.
String[]	listParameters() List the parameters.
void	setParameterValue(String key, String value) Set the value of a parameter.

Method Detail

addParameterDefinition

void addParameterDefinition(String key,
                            String defValue,
                            String description)
                            throws DuplicateParamException

Add a parameter definition to this set. TODO: default, throw exception

Parameters:

key - Name of the parameter.

defValue - default value.

description - Description of the parameter.

Throws:

DuplicateParamException - Upon duplicate parameter definitions

setParameterValue

void setParameterValue(String key,
                       String value)
                       throws UnknownParamException

Set the value of a parameter.

Parameters:

key - key to set value of

value - value to set it to.

Throws:

UnknownParamException - Parameter 'key' is unknown.

getParameterValue

String getParameterValue(String key)
                         throws UnknownParamException

Get the value of a parameter.

Parameters:

key - Key to get value for.

Returns:

value of parameter key.

Throws:

UnknownParamException - Parameter 'key' is unknown.

getParameterDescription

String getParameterDescription(String key)
                               throws UnknownParamException

Get the description of a parameter.

Parameters:

key - Key to get value for.

Returns:

description of parameter key.

Throws:

UnknownParamException - Parameter 'key' is unknown.

getParameterDefault

String getParameterDefault(String key)
                           throws UnknownParamException

Get the default value of a parameter.

Parameters:

key - Key to get value for.

Returns:

default value for parameter key.

Throws:

UnknownParamException - Parameter 'key' is unknown.

listParameters

String[] listParameters()

List the parameters.

Returns:

Array of parameters.

eraseParameters

void eraseParameters()

Clear the values.

copyParametersFrom

void copyParametersFrom(NamedParams params)

Copy params to these named parameters (clearing out first).

Parameters:

params - the parameters to copy from.

activateParameters

void activateParameters()

Activate the currently set parameters

clearParameters

void clearParameters()

Clear all parameters