Package org.apache.calcite.sql.babel

Class SqlBabelCreateTable

java.lang.Object

org.apache.calcite.sql.SqlNode

org.apache.calcite.sql.SqlCall

org.apache.calcite.sql.SqlDdl

org.apache.calcite.sql.SqlCreate

org.apache.calcite.sql.ddl.SqlCreateTable

org.apache.calcite.sql.babel.SqlBabelCreateTable

All Implemented Interfaces:

Cloneable

public class SqlBabelCreateTable
extends SqlCreateTable

Parse tree for CREATE TABLE statement, with extensions for particular SQL dialects supported by Babel.

Field Summary

Fields inherited from class org.apache.calcite.sql.ddl.SqlCreateTable

columnList, name, query

Fields inherited from class org.apache.calcite.sql.SqlCreate

ifNotExists

Fields inherited from class org.apache.calcite.sql.SqlDdl

DDL_OPERATOR

Fields inherited from class org.apache.calcite.sql.SqlNode

EMPTY_ARRAY, pos

Constructor Summary

Constructors

Constructor	Description
SqlBabelCreateTable(SqlParserPos pos, boolean replace, TableCollectionType tableCollectionType, boolean volatile_, boolean ifNotExists, SqlIdentifier name, SqlNodeList columnList, SqlNode query)	Creates a SqlBabelCreateTable.

Method Summary

Modifier and Type	Method	Description
void	unparse(SqlWriter writer, int leftPrec, int rightPrec)	Writes a SQL representation of this node to a writer.

Methods inherited from class org.apache.calcite.sql.ddl.SqlCreateTable

getOperandList

Methods inherited from class org.apache.calcite.sql.SqlCreate

getReplace, setReplace

Methods inherited from class org.apache.calcite.sql.SqlDdl

getOperator

Methods inherited from class org.apache.calcite.sql.SqlCall

accept, clone, equalsDeep, findValidOptions, getCallSignature, getFunctionQuantifier, getKind, getMonotonicity, isCountStar, isExpanded, operand, operandCount, setOperand, validate

Methods inherited from class org.apache.calcite.sql.SqlNode

clone, clone, cloneArray, equalDeep, equalDeep, equalsDeep, getParserPosition, isA, toList, toList, toSqlString, toSqlString, toSqlString, toString, unparseWithParentheses, validateExpr

Methods inherited from class java.lang.Object

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

Constructor Details

SqlBabelCreateTable

public SqlBabelCreateTable(SqlParserPos pos,
 boolean replace,
 TableCollectionType tableCollectionType,
 boolean volatile_,
 boolean ifNotExists,
 SqlIdentifier name,
 SqlNodeList columnList,
 SqlNode query)

Creates a SqlBabelCreateTable.

Method Details

unparse

public void unparse(SqlWriter writer,
 int leftPrec,
 int rightPrec)

Description copied from class: SqlNode

Writes a SQL representation of this node to a writer.

The leftPrec and rightPrec parameters give us enough context to decide whether we need to enclose the expression in parentheses. For example, we need parentheses around "2 + 3" if preceded by "5 *". This is because the precedence of the "*" operator is greater than the precedence of the "+" operator.

The algorithm handles left- and right-associative operators by giving them slightly different left- and right-precedence.

If SqlWriter.isAlwaysUseParentheses() is true, we use parentheses even when they are not required by the precedence rules.

For the details of this algorithm, see SqlCall.unparse(org.apache.calcite.sql.SqlWriter, int, int).

Overrides:

unparse in class SqlCreateTable

Parameters:

writer - Target writer

leftPrec - The precedence of the SqlNode immediately preceding this node in a depth-first scan of the parse tree

rightPrec - The precedence of the SqlNode immediately