CatalogScope (Apache Calcite API)

java.lang.Object
- org.apache.calcite.sql.validate.DelegatingScope
- - org.apache.calcite.sql.validate.CatalogScope

All Implemented Interfaces:

SqlValidatorScope
```
class CatalogScope
extends DelegatingScope
```
Implementation of SqlValidatorScope that can see all schemas in the current catalog.
Occurs near the root of the scope stack; its parent is typically EmptyScope.
Helps resolve schema.table.column column references, such as
```
select sales.emp.empno from sales.emp
```

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.calcite.sql.validate.SqlValidatorScope
  SqlValidatorScope.EmptyPath, SqlValidatorScope.Path, SqlValidatorScope.Resolve, SqlValidatorScope.Resolved, SqlValidatorScope.ResolvedImpl, SqlValidatorScope.Step

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) com.google.common.collect.ImmutableList<java.lang.String>`	`names`	Fully-qualified name of the catalog.
`private java.util.Set<java.util.List<java.lang.String>>`	`schemaNames`

Fields inherited from class org.apache.calcite.sql.validate.DelegatingScope
parent, validator

Constructor Summary

Constructors
Constructor Description

CatalogScope(SqlValidatorScope parent, java.util.List<java.lang.String> names)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method Description

SqlNode getNode()
Returns the root node of this scope.
- Methods inherited from class org.apache.calcite.sql.validate.DelegatingScope
  addChild, addColumnNames, findAliases, findAllColumnNames, findQualifyingTableName, findQualifyingTableNames, fullyQualify, getMonotonicity, getOperandScope, getOrderList, getParent, getTableNamespace, getValidator, lookupWindow, nullifyType, resolve, resolveColumn, resolveInNamespace, resolveTable, validateExpr
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
- Methods inherited from interface org.apache.calcite.sql.validate.SqlValidatorScope
  isWithin

Field Detail

names
```
final com.google.common.collect.ImmutableList<java.lang.String> names
```
Fully-qualified name of the catalog. Typically empty or ["CATALOG"].

schemaNames

private final java.util.Set<java.util.List<java.lang.String>> schemaNames

Constructor Detail

CatalogScope

CatalogScope(SqlValidatorScope parent,
             java.util.List<java.lang.String> names)

Method Detail
- getNode
```
public SqlNode getNode()
```
  Description copied from interface: SqlValidatorScope
  
  Returns the root node of this scope. Never null.