org.eclipse.equinox.p2.metadata.expression

Interface IEvaluationContext

All Known Implementing Classes:

EvaluationContext, EvaluationContext.MultiVariableContext, EvaluationContext.SingleVariableContext

public interface IEvaluationContext

The evaluation context. Contexts can be nested and new contexts are pushed for each closure during an evaluation of an expression.

Since:

2.0

Method Summary

Modifier and Type	Method and Description
IIndexProvider<?>	getIndexProvider()
java.lang.Object	getParameter(int position) Returns the value of the parameter at the given position
java.lang.Object	getValue(IExpression variable) Retrieve the value of the given variable from this context
void	setIndexProvider(IIndexProvider<?> indexProvider)
void	setValue(IExpression variable, java.lang.Object value) Set the current value for the given variable to value

Method Detail

getIndexProvider

IIndexProvider<?> getIndexProvider()

setIndexProvider

void setIndexProvider(IIndexProvider<?> indexProvider)

getValue

java.lang.Object getValue(IExpression variable)

Retrieve the value of the given variable from this context

Parameters:

variable - The variable who's value should be retrieved

Returns:

The current value for the variable

setValue

void setValue(IExpression variable,
              java.lang.Object value)

Set the current value for the given variable to value

Parameters:

variable - The variable who's value should be set

value - The new value for the variable.

getParameter

java.lang.Object getParameter(int position)

Returns the value of the parameter at the given position

Parameters:

position - The zero based position for the parameter

Returns:

The parameter value