gudusoft.gsqlparser.ext.catalog

Interface Catalog

All Known Implementing Classes:

SimpleCatalog

public interface Catalog

Represents a database catalog containing schemas, tables, and columns.

A catalog is the top-level container in the database metadata hierarchy:

 Catalog
   └── Schema
         └── Table
               └── Column
 

Originally derived from Apache Calcite's catalog interfaces.

Method Summary

Modifier and Type	Method and Description
String	getDefaultSchemaName() Returns the default schema name, or null if not set.
String	getName() Returns the name of the catalog.
Schema	getSchema(String schemaName) Returns a schema by name, or null if not found.
List<String>	getSchemaNames() Returns all schema names in this catalog.
List<Schema>	getSchemas() Returns all schemas in this catalog.
Table	getTable(String schemaName, String tableName) Returns a table by qualified name (schema.table), or null if not found.

Method Detail

getName

String getName()

Returns the name of the catalog.

Returns:

Catalog name

getSchemas

List<Schema> getSchemas()

Returns all schemas in this catalog.

Returns:

List of schemas

getSchema

Schema getSchema(String schemaName)

Returns a schema by name, or null if not found.

Parameters:

schemaName - Schema name (case-sensitive)

Returns:

Schema, or null

getSchemaNames

List<String> getSchemaNames()

Returns all schema names in this catalog.

Returns:

List of schema names

getTable

Table getTable(String schemaName,
               String tableName)

Returns a table by qualified name (schema.table), or null if not found.

Parameters:

schemaName - Schema name

tableName - Table name

Returns:

Table, or null

getDefaultSchemaName

String getDefaultSchemaName()

Returns the default schema name, or null if not set.

Returns:

Default schema name, or null