org.apache.calcite.config

Enum Lex

java.lang.Object

java.lang.Enum<Lex>

org.apache.calcite.config.Lex

All Implemented Interfaces:

Serializable, Comparable<Lex>

public enum Lex
extends Enum<Lex>

Named, built-in lexical policy. A lexical policy describes how identifiers are quoted, whether they are converted to upper- or lower-case when they are read, and whether they are matched case-sensitively.

Enum Constant Summary

Enum Constants

Enum Constant and Description
BIG_QUERY Lexical policy similar to BigQuery.
JAVA Lexical policy similar to Java.
MYSQL Lexical policy similar to MySQL.
MYSQL_ANSI Lexical policy similar to MySQL with ANSI_QUOTES option enabled.
ORACLE Lexical policy similar to Oracle.
SQL_SERVER Lexical policy similar to Microsoft SQL Server.

Field Summary

Fields

Modifier and Type	Field and Description
boolean	caseSensitive
Set<CharLiteralStyle>	charLiteralStyles
org.apache.calcite.avatica.util.Casing	quotedCasing
org.apache.calcite.avatica.util.Quoting	quoting
org.apache.calcite.avatica.util.Casing	unquotedCasing

Method Summary

Modifier and Type	Method and Description
static Lex	valueOf(String name) Returns the enum constant of this type with the specified name.
static Lex[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

BIG_QUERY

public static final Lex BIG_QUERY

Lexical policy similar to BigQuery. The case of identifiers is preserved whether or not they quoted; after which, identifiers are matched case-insensitively. Back-ticks allow identifiers to contain non-alphanumeric characters; a back-tick is escaped using a backslash. Character literals may be enclosed in single or double quotes.

ORACLE

public static final Lex ORACLE

Lexical policy similar to Oracle. The case of identifiers enclosed in double-quotes is preserved; unquoted identifiers are converted to upper-case; after which, identifiers are matched case-sensitively.

MYSQL

public static final Lex MYSQL

Lexical policy similar to MySQL. (To be precise: MySQL on Windows; MySQL on Linux uses case-sensitive matching, like the Linux file system.) The case of identifiers is preserved whether or not they quoted; after which, identifiers are matched case-insensitively. Back-ticks allow identifiers to contain non-alphanumeric characters; a back-tick is escaped using a back-tick.

MYSQL_ANSI

public static final Lex MYSQL_ANSI

Lexical policy similar to MySQL with ANSI_QUOTES option enabled. (To be precise: MySQL on Windows; MySQL on Linux uses case-sensitive matching, like the Linux file system.) The case of identifiers is preserved whether or not they quoted; after which, identifiers are matched case-insensitively. Double quotes allow identifiers to contain non-alphanumeric characters.

SQL_SERVER

public static final Lex SQL_SERVER

Lexical policy similar to Microsoft SQL Server. The case of identifiers is preserved whether or not they are quoted; after which, identifiers are matched case-insensitively. Brackets allow identifiers to contain non-alphanumeric characters.

JAVA

public static final Lex JAVA

Lexical policy similar to Java. The case of identifiers is preserved whether or not they are quoted; after which, identifiers are matched case-sensitively. Unlike Java, back-ticks allow identifiers to contain non-alphanumeric characters; a back-tick is escaped using a back-tick.

Field Detail

quoting

public final org.apache.calcite.avatica.util.Quoting quoting

unquotedCasing

public final org.apache.calcite.avatica.util.Casing unquotedCasing

quotedCasing

public final org.apache.calcite.avatica.util.Casing quotedCasing

caseSensitive

public final boolean caseSensitive

charLiteralStyles

public final Set<CharLiteralStyle> charLiteralStyles

Method Detail

values

public static Lex[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Lex c : Lex.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Lex valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null