org.apache.calcite.sql.parser

Class SqlAbstractParserImpl

java.lang.Object

org.apache.calcite.sql.parser.SqlAbstractParserImpl

public abstract class SqlAbstractParserImpl
extends Object

Abstract base for parsers generated from CommonParser.jj.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	SqlAbstractParserImpl.ExprContext Type-safe enum for context of acceptable expressions.
static interface	SqlAbstractParserImpl.Metadata Metadata about the parser.
static class	SqlAbstractParserImpl.MetadataImpl Default implementation of the SqlAbstractParserImpl.Metadata interface.

Field Summary

Fields

Modifier and Type	Field and Description
protected int	nDynamicParams
protected SqlStdOperatorTable	opTab Operator table containing the standard SQL operators and functions.
protected String	originalSql
private static com.google.common.collect.ImmutableSet<String>	SQL_92_RESERVED_WORD_SET

Constructor Summary

Constructors

Constructor and Description
SqlAbstractParserImpl()

Method Summary

Modifier and Type	Method and Description
protected SqlCall	createCall(SqlIdentifier funName, SqlParserPos pos, SqlFunctionCategory funcType, SqlLiteral functionQualifier, Iterable<? extends SqlNode> operands) Creates a call.
protected SqlCall	createCall(SqlIdentifier funName, SqlParserPos pos, SqlFunctionCategory funcType, SqlLiteral functionQualifier, SqlNode[] operands) Creates a call.
abstract SqlAbstractParserImpl.Metadata	getMetadata() Returns metadata about this parser: keywords, etc.
String	getOriginalSql() Returns the SQL text.
protected abstract SqlParserPos	getPos()
static Set<String>	getSql92ReservedWords() Returns immutable set of all reserved words defined by SQL-92.
abstract SqlParseException	normalizeException(Throwable ex) Removes or transforms misleading information from a parse exception or error, and converts to SqlParseException.
abstract SqlNode	parseSqlExpressionEof() Parses a SQL expression ending with EOF and constructs a parse tree.
abstract SqlNode	parseSqlStmtEof() Parses a SQL statement ending with EOF and constructs a parse tree.
abstract void	ReInit(Reader reader) Reinitializes parser with new input.
abstract void	setConformance(SqlConformance conformance) Sets the SQL language conformance level.
abstract void	setIdentifierMaxLength(int identifierMaxLength) Sets the maximum length for sql identifier.
void	setOriginalSql(String originalSql) Sets the SQL text that is being parsed.
abstract void	setQuotedCasing(org.apache.calcite.avatica.util.Casing quotedCasing) Sets the casing policy for quoted identifiers.
abstract void	setTabSize(int tabSize) Sets the tab stop size.
abstract void	setUnquotedCasing(org.apache.calcite.avatica.util.Casing unquotedCasing) Sets the casing policy for unquoted identifiers.
abstract void	switchTo(String stateName) Change parser state.

Methods inherited from class java.lang.Object

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

Field Detail

SQL_92_RESERVED_WORD_SET

private static final com.google.common.collect.ImmutableSet<String> SQL_92_RESERVED_WORD_SET

opTab

protected final SqlStdOperatorTable opTab

Operator table containing the standard SQL operators and functions.

nDynamicParams

protected int nDynamicParams

originalSql

protected String originalSql

Constructor Detail

SqlAbstractParserImpl

public SqlAbstractParserImpl()

Method Detail

getSql92ReservedWords

public static Set<String> getSql92ReservedWords()

Returns immutable set of all reserved words defined by SQL-92.

See Also:

SQL-92 Section 5.2

createCall

protected SqlCall createCall(SqlIdentifier funName,
                             SqlParserPos pos,
                             SqlFunctionCategory funcType,
                             SqlLiteral functionQualifier,
                             Iterable<? extends SqlNode> operands)

Creates a call.

Parameters:

funName - Name of function

pos - Position in source code

funcType - Type of function

functionQualifier - Qualifier

operands - Operands to call

Returns:

Call

createCall

protected SqlCall createCall(SqlIdentifier funName,
                             SqlParserPos pos,
                             SqlFunctionCategory funcType,
                             SqlLiteral functionQualifier,
                             SqlNode[] operands)

Creates a call.

Parameters:

funName - Name of function

pos - Position in source code

funcType - Type of function

functionQualifier - Qualifier

operands - Operands to call

Returns:

Call

getMetadata

public abstract SqlAbstractParserImpl.Metadata getMetadata()

Returns metadata about this parser: keywords, etc.

normalizeException

public abstract SqlParseException normalizeException(Throwable ex)

Removes or transforms misleading information from a parse exception or error, and converts to SqlParseException.

Parameters:

ex - dirty excn

Returns:

clean excn

getPos

protected abstract SqlParserPos getPos()
                                throws Exception

Throws:

Exception

ReInit

public abstract void ReInit(Reader reader)

Reinitializes parser with new input.

Parameters:

reader - provides new input

parseSqlExpressionEof

public abstract SqlNode parseSqlExpressionEof()
                                       throws Exception

Parses a SQL expression ending with EOF and constructs a parse tree.

Returns:

constructed parse tree.

Throws:

Exception

parseSqlStmtEof

public abstract SqlNode parseSqlStmtEof()
                                 throws Exception

Parses a SQL statement ending with EOF and constructs a parse tree.

Returns:

constructed parse tree.

Throws:

Exception

setTabSize

public abstract void setTabSize(int tabSize)

Sets the tab stop size.

Parameters:

tabSize - Tab stop size

setQuotedCasing

public abstract void setQuotedCasing(org.apache.calcite.avatica.util.Casing quotedCasing)

Sets the casing policy for quoted identifiers.

Parameters:

quotedCasing - Casing to set.

setUnquotedCasing

public abstract void setUnquotedCasing(org.apache.calcite.avatica.util.Casing unquotedCasing)

Sets the casing policy for unquoted identifiers.

Parameters:

unquotedCasing - Casing to set.

setIdentifierMaxLength

public abstract void setIdentifierMaxLength(int identifierMaxLength)

Sets the maximum length for sql identifier.

setConformance

public abstract void setConformance(SqlConformance conformance)

Sets the SQL language conformance level.

setOriginalSql

public void setOriginalSql(String originalSql)

Sets the SQL text that is being parsed.

getOriginalSql

public String getOriginalSql()

Returns the SQL text.

switchTo

public abstract void switchTo(String stateName)

Change parser state.

Parameters:

stateName - new state.