Class TemplateAwareExpressionParser

java.lang.Object
org.springframework.expression.common.TemplateAwareExpressionParser
All Implemented Interfaces:
ExpressionParser
Direct Known Subclasses:
SpelExpressionParser
public abstract class TemplateAwareExpressionParser extends Object implements ExpressionParser
Abstract base class for expression parsers that support templates.

Can be subclassed by expression parsers that offer first class support for templating.

Since:
3.0
Author:
Keith Donald, Juergen Hoeller, Andy Clement, Sam Brannen

  • Constructor Details

    • TemplateAwareExpressionParser

      public TemplateAwareExpressionParser()

  • Method Details

    • parseExpression

      public Expression parseExpression(String expressionString) throws ParseException
      Description copied from interface: ExpressionParser
      Parse the expression string and return an Expression object that can be used for repeated evaluation.

      Examples: 

          3 + 4
    name.firstName
      Specified by:
      parseExpression in interface ExpressionParser
      Parameters:
      expressionString - the raw expression string to parse
      Returns:
      an Expression for the parsed expression
      Throws:
      ParseException - if an exception occurred during parsing

    • parseExpression

      public Expression parseExpression(String expressionString, @Nullable ParserContext context) throws ParseException
      Description copied from interface: ExpressionParser
      Parse the expression string and return an Expression object that can be used for repeated evaluation.

      Examples: 

          3 + 4
    name.firstName
      Specified by:
      parseExpression in interface ExpressionParser
      Parameters:
      expressionString - the raw expression string to parse
      context - a context for influencing the expression parsing routine
      Returns:
      an Expression for the parsed expression
      Throws:
      ParseException - if an exception occurred during parsing

    • doParseExpression

      protected abstract Expression doParseExpression(String expressionString, @Nullable ParserContext context) throws ParseException
      Actually parse the expression string and return an Expression object.
      Parameters:
      expressionString - the raw expression string to parse
      context - a context for influencing this expression parsing routine (optional)
      Returns:
      an evaluator for the parsed expression
      Throws:
      ParseException - if an exception occurred during parsing