@NonNullApi @NonNullFields
See: Description
| Interface | Description | 
|---|---|
| ValueRef | Represents a reference to a value. | 
| Class | Description | 
|---|---|
| Assign | Represents assignment. | 
| AstUtils | Utilities methods for use in the Ast classes. | 
| BeanReference | Represents a bean reference to a type, for example @foo or @'foo.bar'. | 
| BooleanLiteral | Represents the literal values  TRUEandFALSE. | 
| CompoundExpression | Represents a DOT separated expression sequence, such as
  'property1.property2.methodOne()'. | 
| ConstructorReference | Represents the invocation of a constructor. | 
| Elvis | Represents the elvis operator ?:. | 
| FloatLiteral | Expression language AST node that represents a float literal. | 
| FunctionReference | A function reference is of the form "#someFunction(a,b,c)". | 
| Identifier | An 'identifier'  SpelNode. | 
| Indexer | An Indexer can index into some proceeding structure to access a particular piece of it. | 
| InlineList | Represent a list in an expression, e.g. | 
| InlineMap | Represent a map in an expression, e.g. | 
| IntLiteral | Expression language AST node that represents an integer literal. | 
| Literal | Common superclass for nodes representing literals (boolean, string, number, etc). | 
| LongLiteral | Expression language AST node that represents a long integer literal. | 
| MethodReference | Expression language AST node that represents a method reference. | 
| NullLiteral | Expression language AST node that represents null. | 
| OpAnd | Represents the boolean AND operation. | 
| OpDec | Decrement operator. | 
| OpDivide | Implements division operator. | 
| OpEQ | Implements the equality operator. | 
| 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. | 
| OperatorBetween | Represents the between operator. | 
| OperatorInstanceof | The operator 'instanceof' checks if an object is of the class specified in the right
 hand operand, in the same way that  instanceofdoes in Java. | 
| OperatorMatches | Implements the matches operator. | 
| OperatorNot | Represents a NOT operation. | 
| OperatorPower | The power operator. | 
| OpGE | Implements greater-than-or-equal operator. | 
| OpGT | Implements the greater-than operator. | 
| OpInc | Increment operator. | 
| OpLE | Implements the less-than-or-equal operator. | 
| OpLT | Implements the less-than operator. | 
| OpMinus | The minus operator supports:
 
 subtraction of numbers
 subtraction of an int from a string of one character
 (effectively decreasing that character), so 'd'-3='a'
  | 
| OpModulus | Implements the modulus operator. | 
| OpMultiply | Implements the  multiplyoperator. | 
| OpNE | Implements the not-equal operator. | 
| OpOr | Represents the boolean OR operation. | 
| OpPlus | The plus operator will:
 
 add numbers
 concatenate strings
  | 
| Projection | Represents projection, where a given operation is performed on all elements in some
 input sequence, returning a new sequence of the same size. | 
| PropertyOrFieldReference | Represents a simple property or field reference. | 
| QualifiedIdentifier | Represents a dot separated sequence of strings that indicate a package qualified type
 reference. | 
| RealLiteral | Expression language AST node that represents a real literal. | 
| Selection | Represents selection over a map or collection. | 
| SpelNodeImpl | The common supertype of all AST nodes in a parsed Spring Expression Language
 format expression. | 
| StringLiteral | Expression language AST node that represents a string literal. | 
| Ternary | Represents a ternary expression, for example: "someCheck()?true:false". | 
| TypeReference | Represents a reference to a type, for example
  "T(String)" or "T(com.somewhere.Foo)". | 
| ValueRef.NullValueRef | A ValueRef for the null value. | 
| ValueRef.TypedValueHolderValueRef | A ValueRef holder for a single value, which cannot be set. | 
| VariableReference | Represents a variable reference, eg. | 
| Enum | Description | 
|---|---|
| TypeCode | Captures primitive types and their corresponding class objects, plus one special entry
 that represents all reference (non-primitive) types. |