Package com.google.appengine.api.search.query

Class ExpressionTreeBuilder

java.lang.Object
com.google.appengine.api.search.query.ExpressionTreeBuilder
public class ExpressionTreeBuilder extends Object
A generator of AST representation of an expression. This class can use an optionally supplied CommonTreeAdaptor to process the tree further. If successful it returns the root of an AST representing the parsed query.

  • Constructor Details

    • ExpressionTreeBuilder

      public ExpressionTreeBuilder()

    • ExpressionTreeBuilder

      public ExpressionTreeBuilder(org.antlr.runtime.tree.CommonTreeAdaptor adaptor)

  • Method Details

    • parse

      public org.antlr.runtime.tree.CommonTree parse(String expression) throws org.antlr.runtime.RecognitionException
      Parses the user expression and returns a CommonTree.
      Parameters:
      expression - the expression to parse
      Returns:
      a CommonTree constructed from the expression
      Throws:
      org.antlr.runtime.RecognitionException - if the user expression is invalid