Package org.eclipse.equinox.p2.metadata.expression

Provides a simple expression language used to represent requirements and filters in the metadada

Package Specification

This package defines a simple expression language that is used to define requirements and filters in the metadata, but also form the base of the p2 query language.

Since:

2.0

Interface Summary

Interface	Description
IContextExpression<T>	This is an expression that will need access to the global variable everything.
IEvaluationContext	The evaluation context.
IExpression	A node in the expression tree
IExpressionFactory	This interface provides all the factory methods needed to create the nodes of the expression tree.
IExpressionParser	A parser that produces an expression tree based on a string representation.
IExpressionVisitor	A general purpose visitor that will visit each node in an expression tree.
IFilterExpression	An interface that combines the IExpression with the LDAP filter.
IMatchExpression<T>	A match expression is a boolean expression matching a candidate of a specific type.
IMemberProvider	This interface may be implemented by any class that wants to provide easy (high performance) access to its member to the expression evaluator.

Class Summary

Class	Description
ExpressionUtil	Global access to factory, parser, and methods for introspection
SimplePattern	A simple compiled pattern.

Exception Summary

Exception	Description
ExpressionParseException	An exception used by an expression parser that indicates that something went wrong when parsing.