SqlAbstractParserImpl.Metadata (Apache Calcite API)

All Known Implementing Classes:

SqlAbstractParserImpl.MetadataImpl

Enclosing class:

SqlAbstractParserImpl
```
public static interface SqlAbstractParserImpl.Metadata
```
Metadata about the parser. For example:
- "KEY" is a keyword: it is meaningful in certain contexts, such as "CREATE FOREIGN KEY", but can be used as an identifier, as in "CREATE TABLE t (key INTEGER)".
- "SELECT" is a reserved word. It can not be used as an identifier.
- "CURRENT_USER" is the name of a context variable. It cannot be used as an identifier.
- "ABS" is the name of a reserved function. It cannot be used as an identifier.
- "DOMAIN" is a reserved word as specified by the SQL:92 standard.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`java.lang.String`	`getJdbcKeywords()`	Returns comma-separated list of JDBC keywords.
`java.util.List<java.lang.String>`	`getTokens()`	Returns a list of all tokens in alphabetical order.
`boolean`	`isContextVariableName(java.lang.String token)`	Returns whether token is the name of a context variable such as "CURRENT_USER".
`boolean`	`isKeyword(java.lang.String token)`	Returns whether token is a keyword.
`boolean`	`isNonReservedKeyword(java.lang.String token)`	Returns true if token is a keyword but not a reserved word.
`boolean`	`isReservedFunctionName(java.lang.String token)`	Returns whether token is a reserved function name such as "CURRENT_USER".
`boolean`	`isReservedWord(java.lang.String token)`	Returns whether token is a reserved word.
`boolean`	`isSql92ReservedWord(java.lang.String token)`	Returns whether token is a reserved word as specified by the SQL:92 standard.

- Method Detail
  - isNonReservedKeyword
```
boolean isNonReservedKeyword(java.lang.String token)
```
    Returns true if token is a keyword but not a reserved word. For example, "KEY".
  - isContextVariableName
```
boolean isContextVariableName(java.lang.String token)
```
    Returns whether token is the name of a context variable such as "CURRENT_USER".
  - isReservedFunctionName
```
boolean isReservedFunctionName(java.lang.String token)
```
    Returns whether token is a reserved function name such as "CURRENT_USER".
  - isKeyword
```
boolean isKeyword(java.lang.String token)
```
    Returns whether token is a keyword. (That is, a non-reserved keyword, a context variable, or a reserved function name.)
  - isReservedWord
```
boolean isReservedWord(java.lang.String token)
```
    Returns whether token is a reserved word.
  - isSql92ReservedWord
```
boolean isSql92ReservedWord(java.lang.String token)
```
    Returns whether token is a reserved word as specified by the SQL:92 standard.
  - getJdbcKeywords
```
java.lang.String getJdbcKeywords()
```
    Returns comma-separated list of JDBC keywords.
  - getTokens
```
java.util.List<java.lang.String> getTokens()
```
    Returns a list of all tokens in alphabetical order.