Package org.apache.empire.db

Class DBObject

java.lang.Object

org.apache.empire.db.DBObject

Direct Known Subclasses:

DBDatabase, DBExpr, DBIndex, DBRecordData, DBRelation

public abstract class DBObject
extends Object

Base class for all objects that directly or indirectly belong to a database including the database object itself. Examples are: tables, views, columns, indexes, relations etc. Not included are: DBMSHandlers, helper classes

Constructor Summary

Constructors

Constructor	Description
DBObject()

Method Summary

Modifier and Type	Method	Description
static <T> T	checkParamNull(String name, T param)	Internally used for parameter checking
abstract <T extends DBDatabase> T	getDatabase()	Returns the database object to which this object belongs to.

Methods inherited from class java.lang.Object

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

Constructor Details

DBObject

public DBObject()

Method Details

checkParamNull

public static <T> T checkParamNull(String name,
 T param)

Internally used for parameter checking

Type Parameters:

T - the object type

Parameters:

name - the name of the param to check

param - the param vlaue to check

Returns:

the param value

getDatabase

public abstract <T extends DBDatabase> T getDatabase()

Returns the database object to which this object belongs to. For the database object itself this function will return the this pointer.

Type Parameters:

T - the object type

Returns:

the database object