com.holonplatform.core

Interface ExpressionResolver.ExpressionResolverHandler

All Superinterfaces:

ExpressionResolver.ExpressionResolverProvider

All Known Subinterfaces:

ExpressionResolver.ResolutionContext, ExpressionResolverRegistry

All Known Implementing Classes:

DefaultExpressionResolverRegistry

Enclosing interface:

ExpressionResolver<E extends Expression,R extends Expression>

public static interface ExpressionResolver.ExpressionResolverHandler
extends ExpressionResolver.ExpressionResolverProvider

Handler to perform Expression resolution using a set of registered ExpressionResolvers.

Method Summary

Modifier and Type	Method and Description
<E extends Expression,R extends Expression> Optional<R>	resolve(E expression, Class<R> resolutionType, ExpressionResolver.ResolutionContext context) Try to resolve given expression to obtain an Expression of the specified resolutionType, using the suitable ExpressionResolvers among all available resolvers for given expression and resolution type.

Methods inherited from interface com.holonplatform.core.ExpressionResolver.ExpressionResolverProvider

getExpressionResolvers

Method Detail

resolve

<E extends Expression,R extends Expression> Optional<R> resolve(E expression,
                                                                Class<R> resolutionType,
                                                                ExpressionResolver.ResolutionContext context)
                                                         throws Expression.InvalidExpressionException

Try to resolve given expression to obtain an Expression of the specified resolutionType, using the suitable ExpressionResolvers among all available resolvers for given expression and resolution type.

ExpressionResolvers invokation order is defined relying on Priority annotation on resolvers class, if available.

Type Parameters:

E - Expression type to resolve

R - Resolved expression type

Parameters:

expression - Expression to resolve (not null)

resolutionType - Type of the expression to obtain from resolvers (not null)

context - Resolution context

Returns:

Optional resolved expression, empty if none of the suitable ExpressionResolvers, if any, resolved the expression

Throws:

Expression.InvalidExpressionException - If an error occurred during expression resolution