Package org.pjdbc.sql

Class RenameTransformer

java.lang.Object

org.pjdbc.sql.AbstractJdbcTransformer

org.pjdbc.sql.RenameTransformer

All Implemented Interfaces:

JdbcTransformer

public class RenameTransformer
extends AbstractJdbcTransformer

Transformer that renames identifiers (table names, column names) in SQL.

Performs case-insensitive word-boundary replacement of identifiers. Preserves the original case of surrounding SQL.

URL Configuration

 jdbc:filter[rename.OLD_NAME=NEW_NAME]:jdbc:...
 jdbc:filter[rename.users=customers,rename.created=created_at]:jdbc:...
 

Limitations

• Uses regex word boundaries - may not handle all SQL dialects perfectly
• Does not parse SQL - works on raw string matching
• Quoted identifiers are still matched (no special handling for "name" or [name])

See Also:

• invalid reference

  FilterDriver

Constructor Summary

Constructors

Constructor	Description
RenameTransformer()	Create a RenameTransformer with no initial replacements.

Method Summary

Modifier and Type	Method	Description
RenameTransformer	addRename(String oldName, String newName)	Add a rename rule.
String	transformSql(String sql)	Default implementation returns SQL unchanged.

Methods inherited from class org.pjdbc.sql.AbstractJdbcTransformer

transformParameter, transformResultValue

Methods inherited from class java.lang.Object

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

Constructor Details

RenameTransformer

public RenameTransformer()

Create a RenameTransformer with no initial replacements.

Method Details

addRename

public RenameTransformer addRename(String oldName,
 String newName)

Add a rename rule.

Parameters:

oldName - the identifier to find (case-insensitive)

newName - the replacement identifier

Returns:

this transformer for chaining

transformSql

public String transformSql(String sql)
                    throws SQLException

Description copied from class: AbstractJdbcTransformer

Default implementation returns SQL unchanged.

Specified by:

transformSql in interface JdbcTransformer

Overrides:

transformSql in class AbstractJdbcTransformer

Parameters:

sql - Original SQL string

Returns:

Transformed SQL string

Throws:

SQLException - if transformation fails