ExpressionTreeBuilder (AppEngine :: appengine-apis 2.0.13 API)

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 Summary

Constructors
Constructor Description

ExpressionTreeBuilder()

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`org.antlr.runtime.tree.CommonTree`	`parse(String expression)`	Parses the user expression and returns a `CommonTree`.

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

- Constructor Detail
  - ExpressionTreeBuilder
```
public ExpressionTreeBuilder()
```
  - ExpressionTreeBuilder
```
public ExpressionTreeBuilder(org.antlr.runtime.tree.CommonTreeAdaptor adaptor)
```
- Method Detail
  - 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