org.eth.cyril.model.dsl

Class QueryResolver

java.lang.Object

org.eth.cyril.model.dsl.QueryResolver

All Implemented Interfaces:

Resolver

public class QueryResolver
extends java.lang.Object
implements Resolver

A query resolver resolves an entire "query" part.

Constructor Summary

Constructors

Constructor and Description
QueryResolver(Resolver root) Creates a new QueryResolver with resolving starting at the given root.
QueryResolver(java.util.Set<Resolver> roots) Creates a new QueryResolver with resolving starting at the given set of resolver roots.

Method Summary

Modifier and Type	Method and Description
static boolean	canParseQuery(java.lang.String query) Returns whether the given query can be successfully parsed.
boolean	canResolve(java.lang.String query) Always returns true for the QueryResolver
java.util.Set<java.lang.String>	getResolvableNames() Returns an empty set, as there is no fixed set of resolvable names for a full query resolver.
(package private) static java.util.Set<Resolver>	handleQuery(DSLParser.QueryContext query, java.util.Set<Resolver> roots)
java.util.Set<Resolver>	resolve(java.lang.String query) Resolves the given full query starting at the roots given in the constructor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

QueryResolver

public QueryResolver(java.util.Set<Resolver> roots)

Creates a new QueryResolver with resolving starting at the given set of resolver roots.

Parameters:

roots - The set of roots to start resolving at.

QueryResolver

public QueryResolver(Resolver root)

Creates a new QueryResolver with resolving starting at the given root.

Parameters:

root - The root to start resolving at.

Method Detail

canParseQuery

public static boolean canParseQuery(java.lang.String query)

Returns whether the given query can be successfully parsed.

Parameters:

query - The query to parse.

Returns:

Whether the query can be parsed.

resolve

public java.util.Set<Resolver> resolve(java.lang.String query)

Resolves the given full query starting at the roots given in the constructor. Unlike other resolvers, the "query" parameter here may be a full-blown query with multiple parts.

Specified by:

resolve in interface Resolver

Parameters:

query - The query to be resolved.

Returns:

The set of resolvers matching the given query. Returns an empty set if the query cannot be parsed.

getResolvableNames

public java.util.Set<java.lang.String> getResolvableNames()

Returns an empty set, as there is no fixed set of resolvable names for a full query resolver.

Specified by:

getResolvableNames in interface Resolver

canResolve

public boolean canResolve(java.lang.String query)

Always returns true for the QueryResolver

Specified by:

canResolve in interface Resolver

Parameters:

query - The name to be resolved for this Resolver.

Returns:

Whether this resolver can resolve the given name.

handleQuery

static java.util.Set<Resolver> handleQuery(DSLParser.QueryContext query,
                                           java.util.Set<Resolver> roots)