org.h2.engine

Class DbObjectBase

java.lang.Object

org.h2.engine.DbObjectBase

All Implemented Interfaces:

DbObject

Direct Known Subclasses:

Comment, Right, RightOwner, Schema, SchemaObjectBase, Setting, UserAggregate, UserDataType

public abstract class DbObjectBase
extends Object
implements DbObject

The base class for all database objects.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	comment The comment (if set).
protected Database	database The database.
protected Trace	trace The trace module.

Fields inherited from interface org.h2.engine.DbObject

AGGREGATE, COMMENT, CONSTANT, CONSTRAINT, FUNCTION_ALIAS, INDEX, RIGHT, ROLE, SCHEMA, SEQUENCE, SETTING, TABLE_OR_VIEW, TRIGGER, USER, USER_DATATYPE

Constructor Summary

Constructors

Constructor and Description
DbObjectBase()

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	checkRename() Check if this object can be renamed.
ArrayList<DbObject>	getChildren() Get the list of dependent children (for tables, this includes indexes and so on).
String	getComment() Get the current comment of this object.
abstract String	getCreateSQL() Build a SQL statement to re-create this object.
Database	getDatabase() Get the database.
abstract String	getDropSQL() Build a SQL statement to drop this object.
int	getId() Get the unique object id.
long	getModificationId()
String	getName() Get the name.
String	getSQL() Get the SQL name of this object (may be quoted).
protected void	initDbObjectBase(Database db, int objectId, String name, String traceModule) Initialize some attributes of this object.
protected void	invalidate() Set the main attributes to null to make sure the object is no longer used.
boolean	isTemporary() Check if this object is temporary (for example, a temporary table).
abstract void	removeChildrenAndResources(Session session) Remove all dependent objects and free all resources (files, blocks in files) of this object.
void	rename(String newName) Rename the object.
void	setComment(String comment) Change the comment of this object.
void	setModified() Tell the object that is was modified.
protected void	setObjectName(String name)
void	setTemporary(boolean temporary) Tell this object that it is temporary or not.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.h2.engine.DbObject

getCreateSQLForCopy, getType

Field Detail

database

protected Database database

The database.

trace

protected Trace trace

The trace module.

comment

protected String comment

The comment (if set).

Constructor Detail

DbObjectBase

public DbObjectBase()

Method Detail

initDbObjectBase

protected void initDbObjectBase(Database db,
                    int objectId,
                    String name,
                    String traceModule)

Initialize some attributes of this object.

Parameters:

db - the database

objectId - the object id

name - the name

traceModule - the trace module name

getCreateSQL

public abstract String getCreateSQL()

Build a SQL statement to re-create this object.

Specified by:

getCreateSQL in interface DbObject

Returns:

the SQL statement

getDropSQL

public abstract String getDropSQL()

Build a SQL statement to drop this object.

Specified by:

getDropSQL in interface DbObject

Returns:

the SQL statement

removeChildrenAndResources

public abstract void removeChildrenAndResources(Session session)

Remove all dependent objects and free all resources (files, blocks in files) of this object.

Specified by:

removeChildrenAndResources in interface DbObject

Parameters:

session - the session

checkRename

public abstract void checkRename()

Check if this object can be renamed. System objects may not be renamed.

Specified by:

checkRename in interface DbObject

setModified

public void setModified()

Tell the object that is was modified.

getModificationId

public long getModificationId()

setObjectName

protected void setObjectName(String name)

getSQL

public String getSQL()

Description copied from interface: DbObject

Get the SQL name of this object (may be quoted).

Specified by:

getSQL in interface DbObject

Returns:

the SQL name

getChildren

public ArrayList<DbObject> getChildren()

Description copied from interface: DbObject

Get the list of dependent children (for tables, this includes indexes and so on).

Specified by:

getChildren in interface DbObject

Returns:

the list of children

getDatabase

public Database getDatabase()

Description copied from interface: DbObject

Get the database.

Specified by:

getDatabase in interface DbObject

Returns:

the database

getId

public int getId()

Description copied from interface: DbObject

Get the unique object id.

Specified by:

getId in interface DbObject

Returns:

the object id

getName

public String getName()

Description copied from interface: DbObject

Get the name.

Specified by:

getName in interface DbObject

Returns:

the name

invalidate

protected void invalidate()

Set the main attributes to null to make sure the object is no longer used.

rename

public void rename(String newName)

Description copied from interface: DbObject

Rename the object.

Specified by:

rename in interface DbObject

Parameters:

newName - the new name

isTemporary

public boolean isTemporary()

Description copied from interface: DbObject

Check if this object is temporary (for example, a temporary table).

Specified by:

isTemporary in interface DbObject

Returns:

true if is temporary

setTemporary

public void setTemporary(boolean temporary)

Description copied from interface: DbObject

Tell this object that it is temporary or not.

Specified by:

setTemporary in interface DbObject

Parameters:

temporary - the new value

setComment

public void setComment(String comment)

Description copied from interface: DbObject

Change the comment of this object.

Specified by:

setComment in interface DbObject

Parameters:

comment - the new comment, or null for no comment

getComment

public String getComment()

Description copied from interface: DbObject

Get the current comment of this object.

Specified by:

getComment in interface DbObject

Returns:

the comment, or null if not set

toString

public String toString()

Overrides:

toString in class Object