gudusoft.gsqlparser.resolver2

Class NameResolver

Object

gudusoft.gsqlparser.resolver2.NameResolver

public class NameResolver
extends Object

Core component for resolving column references to their sources. Key responsibilities: 1. Resolve TObjectName (column references) using scope tree 2. Handle qualified and unqualified names 3. Detect and report ambiguities 4. Apply GUESS_COLUMN_STRATEGY for ambiguous columns 5. Update TObjectName with resolution results 6. Update ResolutionContext for global querying

Constructor Summary

Constructors

Constructor and Description
NameResolver(INameMatcher nameMatcher, ResolutionContext context) Deprecated. Use NameResolver(TSQLResolverConfig, ResolutionContext) instead
NameResolver(TSQLResolverConfig config, ResolutionContext context) Create a NameResolver with full configuration.

Method Summary

Modifier and Type	Method and Description
List<INamespace>	findNamespacesWithColumn(String columnName, IScope scope) Find all namespaces that contain a given column.
ResolutionContext	getContext()
INameMatcher	getNameMatcher()
ResolutionResult	resolve(TObjectName objName, IScope scope) Resolve a column reference (TObjectName) within a given scope.
ResolutionResult	resolveInNamespace(String columnName, INamespace namespace) Resolve a column within a specific namespace (for direct lookups).

Methods inherited from class Object

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

Constructor Detail

NameResolver

public NameResolver(TSQLResolverConfig config,
                    ResolutionContext context)

Create a NameResolver with full configuration.

Parameters:

config - The resolver configuration (includes name matcher and strategy)

context - The resolution context for tracking results

NameResolver

@Deprecated
public NameResolver(INameMatcher nameMatcher,
                                ResolutionContext context)

Deprecated. Use NameResolver(TSQLResolverConfig, ResolutionContext) instead

Create a NameResolver with just name matcher (backward compatibility). Uses default configuration for GUESS_COLUMN_STRATEGY.

Method Detail

resolve

public ResolutionResult resolve(TObjectName objName,
                                IScope scope)

Resolve a column reference (TObjectName) within a given scope.

Parameters:

objName - The column reference to resolve

scope - The scope where the reference appears

Returns:

Resolution result

resolveInNamespace

public ResolutionResult resolveInNamespace(String columnName,
                                           INamespace namespace)

Resolve a column within a specific namespace (for direct lookups).

findNamespacesWithColumn

public List<INamespace> findNamespacesWithColumn(String columnName,
                                                 IScope scope)

Find all namespaces that contain a given column. Used for implementing full candidate collection in ambiguous scenarios.

getNameMatcher

public INameMatcher getNameMatcher()

getContext

public ResolutionContext getContext()