Package org.h2.bnf.context

Class DbContextRule

java.lang.Object

org.h2.bnf.context.DbContextRule

All Implemented Interfaces:

Rule

public class DbContextRule
extends Object
implements Rule

A BNF terminal rule that is linked to the database context information. This class is used by the H2 Console, to support auto-complete.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	COLUMN
static final int	COLUMN_ALIAS
private String	columnType
private final DbContents	contents
static final int	NEW_TABLE_ALIAS
static final int	PROCEDURE
static final int	SCHEMA
static final int	TABLE
static final int	TABLE_ALIAS
private final int	type

Constructor Summary

Constructors

Constructor	Description
DbContextRule(DbContents contents, int type)	BNF terminal rule Constructor

Method Summary

Modifier and Type	Method	Description
void	accept(BnfVisitor visitor)	Call the visit method in the given visitor.
boolean	autoComplete(Sentence sentence)	Add the next possible token(s).
private void	autoCompleteProcedure(Sentence sentence)
private static String	autoCompleteTableAlias(Sentence sentence, boolean newAlias)
void	setColumnType(String columnType)
void	setLinks(HashMap<String,RuleHead> ruleMap)	Update cross references.
private boolean	testColumnType(DbColumn column)

Methods inherited from class java.lang.Object

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

Field Details

COLUMN

public static final int COLUMN

See Also:

• Constant Field Values

TABLE

public static final int TABLE

See Also:

• Constant Field Values

TABLE_ALIAS

public static final int TABLE_ALIAS

See Also:

• Constant Field Values

NEW_TABLE_ALIAS

public static final int NEW_TABLE_ALIAS

See Also:

• Constant Field Values

COLUMN_ALIAS

public static final int COLUMN_ALIAS

See Also:

• Constant Field Values

SCHEMA

public static final int SCHEMA

See Also:

• Constant Field Values

PROCEDURE

public static final int PROCEDURE

See Also:

• Constant Field Values

contents

private final DbContents contents

type

private final int type

columnType

private String columnType

Constructor Details

DbContextRule

public DbContextRule(DbContents contents,
 int type)

BNF terminal rule Constructor

Parameters:

contents - Extract rule from this component

type - Rule type, one of COLUMN, TABLE, TABLE_ALIAS, NEW_TABLE_ALIAS, COLUMN_ALIAS, SCHEMA

Method Details

setColumnType

public void setColumnType(String columnType)

Parameters:

columnType - COLUMN Auto completion can be filtered by column type

setLinks

public void setLinks(HashMap<String,RuleHead> ruleMap)

Description copied from interface: Rule

Update cross references.

Specified by:

setLinks in interface Rule

Parameters:

ruleMap - the reference map

accept

public void accept(BnfVisitor visitor)

Description copied from interface: Rule

Call the visit method in the given visitor.

Specified by:

accept in interface Rule

Parameters:

visitor - the visitor

autoComplete

public boolean autoComplete(Sentence sentence)

Description copied from interface: Rule

Add the next possible token(s). If there was a match, the query in the sentence is updated (the matched token is removed).

Specified by:

autoComplete in interface Rule

Parameters:

sentence - the sentence context

Returns:

true if a full match

testColumnType

private boolean testColumnType(DbColumn column)

autoCompleteProcedure

private void autoCompleteProcedure(Sentence sentence)

autoCompleteTableAlias

private static String autoCompleteTableAlias(Sentence sentence,
 boolean newAlias)