Package com.google.appengine.api.search.query (2.0.0)

Classes

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.

ParserUtils

A helper class that holds various, state-less utility functions used by the query parser.

QueryLexer

QueryParser

QueryParser.DFA10

QueryParser.DFA11

QueryParser.DFA14

QueryParser.DFA4

QueryParser.DFA5

QueryParser.DFA6

QueryParser.DFA8

QueryParser.DFA9

QueryParser.andOp_return

QueryParser.arg_return

QueryParser.arglist_return

QueryParser.comparable_return

QueryParser.comparator_return

QueryParser.composite_return

QueryParser.expression_return

QueryParser.factor_return

QueryParser.function_return

QueryParser.item_return

QueryParser.member_return

QueryParser.notOp_return

QueryParser.orOp_return

QueryParser.phrase_return

QueryParser.primitive_return

QueryParser.query_return

QueryParser.restriction_return

QueryParser.sep_return

QueryParser.sequence_return

QueryParser.term_return

QueryParser.text_return

QueryParser.value_return

QueryParserFactory

A factory which produces QueryParsers for a given token rewrite stream.

QueryTreeBuilder

A generator of AST representation of a query. This class uses the given factory to produce a query parser which parses user specified query. If successful it returns the root of an AST representing the parsed query.

QueryTreeContext<T>

The base class for specific query tree context used by the walker. This class is used to maintain additional information gathered while walking the tree. On this level it is used to collect return type information.

QueryTreeWalker<T>

The walking of the query tree. This class takes care of visiting a tree resulting from parsing a query. As it traverses the tree it calls appropriate methods of the visitor, set at the construction time. The class uses a depth-first search, visiting all children of a node, before visiting the node. The visit is done by calling an appropriate method of the visitor. Typical code should match the following pattern:


 class MyVisitor implements QueryTreeVisitor {
   ...
 }
 class MyContext extends QueryTreeContext<MyContext> {
   ...
   @Override
   protected MyContext newChildContext() {
     return new MyContext();
   }
 }

 MyContext context = new MyContext();
 QueryTreeWalker<MyContext> walker = new QueryTreeWalker<MyContext>(new MyVisitor());
 Tree root = parser.query(queryStr);
 walker.walk(root, context);
 // retrieve whatever information you need from context

Interfaces

QueryTreeVisitor<T>

Defines an interface of the visitor invoked by the walker.

Exceptions

QueryTreeException

A parsing exception thrown when the tree resulting from parsing a query is in some sense invalid.

Package com.google.appengine.api.search.query (2.0.0)

Classes

Interfaces

Enums

Exceptions