Package org.pgcodekeeper.core.database.ms.parser.expr

Class MsAbstractExprWithNmspc<T>

java.lang.Object

org.pgcodekeeper.core.database.base.parser.antlr.AbstractExpr

org.pgcodekeeper.core.database.ms.parser.expr.MsAbstractExpr

org.pgcodekeeper.core.database.ms.parser.expr.MsAbstractExprWithNmspc<T>

Type Parameters:

T - analyzed expression, should be extension of ParserRuleContext or a rulectx wrapper class

Direct Known Subclasses:

MsDelete, MsExprWithNmspc, MsInsert, MsMerge, MsSelect, MsUpdate

public abstract class MsAbstractExprWithNmspc<T>
extends MsAbstractExpr

Abstract base class for analyzing Microsoft SQL expressions with namespace support. Provides functionality for managing table aliases, common table expressions (CTEs), and resolving object references within a specific namespace context.

Author:

levsha_aa

Method Summary

Modifier and Type	Method	Description
void	addRawTableReference(ObjectReference qualifiedTable)	Adds an unaliased table reference to the namespace.
boolean	addReference(String alias, ObjectReference object)	Adds a reference to the namespace with the specified alias.
abstract List<String>	analyze(T ruleCtx)	Analyzes the given rule context and returns a list of column names.
Map.Entry<String,ObjectReference>	findReference(String schema, String name, String column)

Methods inherited from class org.pgcodekeeper.core.database.base.parser.antlr.AbstractExpr

addDependency, addDependency, addDependency, addReference, addVariable, getDependencies

Methods inherited from class java.lang.Object

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

Method Details

findReference

public Map.Entry<String,ObjectReference> findReference(String schema,
 String name,
 String column)

Overrides:

findReference in class AbstractExpr

Parameters:

schema - optional schema qualification of name, may be null

name - alias of the referenced object

column - optional referenced column alias, may be null

Returns:

a pair of (Alias, Dealiased name) where Alias is the given name. Dealiased name can be null if the name is internal to the query and is not a reference to external table.
null if the name is not found

addReference

public boolean addReference(String alias,
 ObjectReference object)

Adds a reference to the namespace with the specified alias. Clients may use this to setup pseudo-variable names before expression analysis.

Parameters:

alias - the alias name for the reference

object - the database object being referenced, may be null for internal query names

Returns:

true if the reference was added successfully, false if alias already exists

addRawTableReference

public void addRawTableReference(ObjectReference qualifiedTable)

Adds an unaliased table reference to the namespace. Used for tables that don't have explicit aliases in the FROM clause.

Parameters:

qualifiedTable - the fully qualified table reference to add

analyze

public abstract List<String> analyze(T ruleCtx)

Analyzes the given rule context and returns a list of column names. Implementations should process the specific Microsoft SQL expression type and extract relevant database dependencies and column information.

Parameters:

ruleCtx - the parser rule context to analyze

Returns:

list of column names found during analysis