org.apache.calcite.sql.parser

Class SqlAbstractParserImpl.MetadataImpl

java.lang.Object

org.apache.calcite.sql.parser.SqlAbstractParserImpl.MetadataImpl

All Implemented Interfaces:

SqlAbstractParserImpl.Metadata

Enclosing class:

SqlAbstractParserImpl

public static class SqlAbstractParserImpl.MetadataImpl
extends Object
implements SqlAbstractParserImpl.Metadata

Default implementation of the SqlAbstractParserImpl.Metadata interface.

Field Summary

Fields

Modifier and Type	Field and Description
private Set<String>	contextVariableNames
private Set<String>	nonReservedKeyWordSet
private Set<String>	reservedFunctionNames
private Set<String>	reservedWords
private String	sql92ReservedWords
private List<String>	tokenList Immutable list of all tokens, in alphabetical order.
private SortedSet<String>	tokenSet Set of all tokens.

Constructor Summary

Constructors

Constructor and Description
MetadataImpl(SqlAbstractParserImpl sqlParser) Creates a MetadataImpl.

Method Summary

Modifier and Type	Method and Description
private String	constructSql92ReservedWordList() Builds a comma-separated list of JDBC reserved words.
String	getJdbcKeywords() Returns comma-separated list of JDBC keywords.
List<String>	getTokens() Returns a list of all tokens in alphabetical order.
private void	initList(SqlAbstractParserImpl parserImpl, Set<String> keywords, String name) Initializes lists of keywords.
boolean	isContextVariableName(String token) Returns whether token is the name of a context variable such as "CURRENT_USER".
boolean	isKeyword(String token) Returns whether token is a keyword.
boolean	isNonReservedKeyword(String token) Returns true if token is a keyword but not a reserved word.
boolean	isReservedFunctionName(String token) Returns whether token is a reserved function name such as "CURRENT_USER".
boolean	isReservedWord(String token) Returns whether token is a reserved word.
boolean	isSql92ReservedWord(String token) Returns whether token is a reserved word as specified by the SQL:92 standard.
private Object	virtualCall(SqlAbstractParserImpl parserImpl, String name) Uses reflection to invoke a method on this parser.

Methods inherited from class java.lang.Object

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

Field Detail

reservedFunctionNames

private final Set<String> reservedFunctionNames

contextVariableNames

private final Set<String> contextVariableNames

nonReservedKeyWordSet

private final Set<String> nonReservedKeyWordSet

tokenSet

private final SortedSet<String> tokenSet

Set of all tokens.

tokenList

private final List<String> tokenList

Immutable list of all tokens, in alphabetical order.

reservedWords

private final Set<String> reservedWords

sql92ReservedWords

private final String sql92ReservedWords

Constructor Detail

MetadataImpl

public MetadataImpl(SqlAbstractParserImpl sqlParser)

Creates a MetadataImpl.

Parameters:

sqlParser - Parser

Method Detail

initList

private void initList(SqlAbstractParserImpl parserImpl,
                      Set<String> keywords,
                      String name)

Initializes lists of keywords.

virtualCall

private Object virtualCall(SqlAbstractParserImpl parserImpl,
                           String name)
                    throws Throwable

Uses reflection to invoke a method on this parser. The method must be public and have no parameters.

Parameters:

parserImpl - Parser

name - Name of method. For example "ReservedFunctionName".

Returns:

Result of calling method

Throws:

Throwable

constructSql92ReservedWordList

private String constructSql92ReservedWordList()

Builds a comma-separated list of JDBC reserved words.

getTokens

public List<String> getTokens()

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns a list of all tokens in alphabetical order.

Specified by:

getTokens in interface SqlAbstractParserImpl.Metadata

isSql92ReservedWord

public boolean isSql92ReservedWord(String token)

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns whether token is a reserved word as specified by the SQL:92 standard.

Specified by:

isSql92ReservedWord in interface SqlAbstractParserImpl.Metadata

getJdbcKeywords

public String getJdbcKeywords()

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns comma-separated list of JDBC keywords.

Specified by:

getJdbcKeywords in interface SqlAbstractParserImpl.Metadata

isKeyword

public boolean isKeyword(String token)

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns whether token is a keyword. (That is, a non-reserved keyword, a context variable, or a reserved function name.)

Specified by:

isKeyword in interface SqlAbstractParserImpl.Metadata

isNonReservedKeyword

public boolean isNonReservedKeyword(String token)

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns true if token is a keyword but not a reserved word. For example, "KEY".

Specified by:

isNonReservedKeyword in interface SqlAbstractParserImpl.Metadata

isReservedFunctionName

public boolean isReservedFunctionName(String token)

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns whether token is a reserved function name such as "CURRENT_USER".

Specified by:

isReservedFunctionName in interface SqlAbstractParserImpl.Metadata

isContextVariableName

public boolean isContextVariableName(String token)

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns whether token is the name of a context variable such as "CURRENT_USER".

Specified by:

isContextVariableName in interface SqlAbstractParserImpl.Metadata

isReservedWord

public boolean isReservedWord(String token)

Description copied from interface: SqlAbstractParserImpl.Metadata

Returns whether token is a reserved word.

Specified by:

isReservedWord in interface SqlAbstractParserImpl.Metadata