ExpressionHelper (Data Pipeline JavaDoc)

java.lang.Object

com.northconcepts.datapipeline.expression.ExpressionHelper

public class ExpressionHelper extends Object

Parses expression-language text into a syntax tree (ASTNode).

Method Summary

Modifier and Type

Method

Description

static ASTNode

parseExpression(String expressionAsString)

Parses the given expression into a syntax tree; throws a ParseException if it is null, blank or invalid.

static ASTNode

parseLogicalExpression(String expressionAsString)

Parses a logical (true/false) expression, such as x > 23, into a syntax tree; throws a ParseException if it is null, blank, invalid or not logical.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details
- parseExpression
  
  public static ASTNode parseExpression(String expressionAsString) throws ParseException
  
  Parses the given expression into a syntax tree; throws a ParseException if it is null, blank or invalid.
  
  Throws:
  
  ParseException
- parseLogicalExpression
  
  public static ASTNode parseLogicalExpression(String expressionAsString) throws ParseException
  
  Parses a logical (true/false) expression, such as x > 23, into a syntax tree; throws a ParseException if it is null, blank, invalid or not logical.
  
  Throws:
  
  ParseException