Parameter (Pentaho Community Edition Project: mondrian 9.0.0.1-426 API)

All Known Subinterfaces:

ParameterCompilable

All Known Implementing Classes:

ParameterImpl, RolapSchemaParameter
```
public interface Parameter
```
Parameter to a Query.
A parameter is not an expression; see ParameterExpr.

Since:

Jul 22, 2006

Author:

jhyde

Nested Class Summary

Nested Classes
Modifier and Type Interface and Description

static class Parameter.Scope
Scope where a parameter is defined.

Nested Classes
Modifier and Type	Interface and Description
`static class`	`Parameter.Scope` Scope where a parameter is defined.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`Exp`	`getDefaultExp()` Returns the expression which provides the default value for this Parameter.
`String`	`getDescription()` Returns the description of this Parameter.
`String`	`getName()` Returns the name of this Parameter.
`Parameter.Scope`	`getScope()` Returns the scope where this parameter is defined.
`Type`	`getType()` Returns the type of this Parameter.
`Object`	`getValue()` Returns the value of this parameter.
`boolean`	`isModifiable()` Returns whether the value of this Parameter can be modified in a query.
`boolean`	`isSet()` Returns whether the value of this parameter has been set.
`void`	`setValue(Object value)` Sets the value of this parameter.
`void`	`unsetValue()` Unsets the value of this parameter.

- Method Detail
  - getScope
```
Parameter.Scope getScope()
```
    Returns the scope where this parameter is defined.
    
    Returns:
    
    Scope of the parameter
  - getType
```
Type getType()
```
    Returns the type of this Parameter.
    
    Returns:
    
    Type of the parameter
  - getDefaultExp
```
Exp getDefaultExp()
```
    Returns the expression which provides the default value for this Parameter. Never null.
    
    Returns:
    
    Default value expression of the parameter
  - getName
```
String getName()
```
    Returns the name of this Parameter.
    
    Returns:
    
    Name of the parameter
  - getDescription
```
String getDescription()
```
    Returns the description of this Parameter.
    
    Returns:
    
    Description of the parameter
  - isModifiable
```
boolean isModifiable()
```
    Returns whether the value of this Parameter can be modified in a query.
    
    Returns:
    
    Whether parameter is modifiable
  - getValue
```
Object getValue()
```
    Returns the value of this parameter.
    If setValue(Object) has not been called, returns the default value of this parameter.
    The type of the value is (depending on the type of the parameter) a String, Number, or Member.
    
    Returns:
    
    The value of this parameter
  - setValue
```
void setValue(Object value)
```
    Sets the value of this parameter.
    
    Parameters:
    
    value - Value of the parameter; must be a String, a Double, or a Member
  - isSet
```
boolean isSet()
```
    Returns whether the value of this parameter has been set.
    If the value has not been set, this parameter will return its default value.
    Setting a parameter to null is not equivalent to unsetting it. To unset a parameter, call unsetValue().
    
    Returns:
    
    Whether this parameter has been assigned a value
  - unsetValue
```
void unsetValue()
```
    Unsets the value of this parameter.
    After calling this method, the parameter will revert to its default value, as if setValue(Object) had not been called, and isSet() will return false.

Interface Parameter

Nested Class Summary

Method Summary

Method Detail

getScope

getType

getDefaultExp

getName

getDescription

isModifiable

getValue

setValue

isSet

unsetValue