org.eclipse.equinox.internal.p2.metadata.expression

Class EvaluationContext

java.lang.Object

org.eclipse.equinox.internal.p2.metadata.expression.EvaluationContext

All Implemented Interfaces:

IEvaluationContext

Direct Known Subclasses:

EvaluationContext.MultiVariableContext, EvaluationContext.SingleVariableContext

public class EvaluationContext
extends java.lang.Object
implements IEvaluationContext

Highly specialized evaluation contexts optimized for misc purposes

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	EvaluationContext.MultiVariableContext
static class	EvaluationContext.SingleVariableContext

Method Summary

Modifier and Type	Method and Description
static IEvaluationContext	create()
static IEvaluationContext	create(IEvaluationContext parent, IExpression variable)
static IEvaluationContext	create(IEvaluationContext parent, IExpression[] variables)
static IEvaluationContext	create(IEvaluationContext parent, java.lang.Object[] parameters)
static IEvaluationContext	create(IEvaluationContext parent, java.lang.Object[] parameters, IExpression[] variables)
static IEvaluationContext	create(IExpression variable)
static IEvaluationContext	create(IExpression[] variables)
static IEvaluationContext	create(java.lang.Object[] parameters, IExpression variable)
static IEvaluationContext	create(java.lang.Object[] parameters, IExpression[] variables)
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

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

create

public static IEvaluationContext create()

create

public static IEvaluationContext create(IEvaluationContext parent,
                                        IExpression variable)

create

public static IEvaluationContext create(IEvaluationContext parent,
                                        IExpression[] variables)

create

public static IEvaluationContext create(IEvaluationContext parent,
                                        java.lang.Object[] parameters,
                                        IExpression[] variables)

create

public static IEvaluationContext create(IEvaluationContext parent,
                                        java.lang.Object[] parameters)

create

public static IEvaluationContext create(IExpression variable)

create

public static IEvaluationContext create(IExpression[] variables)

create

public static IEvaluationContext create(java.lang.Object[] parameters,
                                        IExpression variable)

create

public static IEvaluationContext create(java.lang.Object[] parameters,
                                        IExpression[] variables)

getParameter

public final java.lang.Object getParameter(int position)

Description copied from interface: IEvaluationContext

Returns the value of the parameter at the given position

Specified by:

getParameter in interface IEvaluationContext

Parameters:

position - The zero based position for the parameter

Returns:

The parameter value

getValue

public java.lang.Object getValue(IExpression variable)

Description copied from interface: IEvaluationContext

Retrieve the value of the given variable from this context

Specified by:

getValue in interface IEvaluationContext

Parameters:

variable - The variable who's value should be retrieved

Returns:

The current value for the variable

setValue

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

Description copied from interface: IEvaluationContext

Set the current value for the given variable to value

Specified by:

setValue in interface IEvaluationContext

Parameters:

variable - The variable who's value should be set

value - The new value for the variable.

getIndexProvider

public IIndexProvider<?> getIndexProvider()

Specified by:

getIndexProvider in interface IEvaluationContext

setIndexProvider

public void setIndexProvider(IIndexProvider<?> indexProvider)

Specified by:

setIndexProvider in interface IEvaluationContext