程序包 org.springframework.expression.spel.ast的使用 (Spring Framework 5.2.12.RELEASE API)

使用org.springframework.expression.spel.ast的程序包
程序包	说明
org.springframework.expression.spel.ast	SpEL's abstract syntax tree.
org.springframework.expression.spel.standard	SpEL's standard parser implementation.

org.springframework.expression.spel.ast使用的org.springframework.expression.spel.ast中的类
类	说明
Literal	Common superclass for nodes representing literals (boolean, string, number, etc).
Operator	Common supertype for operators that operate on either one or two operands.
Operator.DescriptorComparison	A descriptor comparison encapsulates the result of comparing descriptor for two operands and describes at what level they are compatible.
SpelNodeImpl	The common supertype of all AST nodes in a parsed Spring Expression Language format expression.
TypeCode	Captures primitive types and their corresponding class objects, plus one special entry that represents all reference (non-primitive) types.
ValueRef	Represents a reference to a value.

org.springframework.expression.spel.standard使用的org.springframework.expression.spel.ast中的类
类	说明
SpelNodeImpl	The common supertype of all AST nodes in a parsed Spring Expression Language format expression.

程序包的使用org.springframework.expression.spel.ast