Package org.apache.empire.dbms.oracle

Class OracleRowNumExpr

java.lang.Object

org.apache.empire.db.DBObject

org.apache.empire.db.DBExpr

org.apache.empire.db.DBColumnExpr

org.apache.empire.dbms.oracle.OracleRowNumExpr

All Implemented Interfaces:

ColumnExpr

public class OracleRowNumExpr
extends DBColumnExpr

implements a column expression for the Oracle rownum function

Field Summary

Fields

Modifier and Type	Field	Description
final DBDatabase	db

Fields inherited from class org.apache.empire.db.DBColumnExpr

attributes, beanPropertyName, options

Fields inherited from class org.apache.empire.db.DBExpr

CTX_ALIAS, CTX_ALL, CTX_DEFAULT, CTX_FULLNAME, CTX_NAME, CTX_NOPARENTHESIS, CTX_VALUE

Constructor Summary

Constructors

Constructor	Description
OracleRowNumExpr(DBDatabase db)	Constructs a new OracleRowNumExpr object.

Method Summary

Modifier and Type	Method	Description
void	addReferencedColumns(Set<DBColumn> list)	Internal function to obtain all DBColumnExpr-objects used by this expression.
void	addSQL(DBSQLBuilder sql, long context)	Creates the SQL-Command.
Element	addXml(Element parent, long flags)	this helper function calls the DBColumnExpr.addXML(Element, long) method
boolean	equals(Object other)
final DBDatabase	getDatabase()	Returns the current DBDatabase object.
DataType	getDataType()	Returns the data type of the DBColumnExpr object.
Class<Enum<?>>	getEnumType()	Not an Enum.
String	getName()	Returns the column name.
DBRowSet	getRowSet()	Returns null.
DBColumn	getUpdateColumn()	Returns null.
boolean	isAggregate()	Always returns false

Methods inherited from class org.apache.empire.db.DBColumnExpr

abs, aggregate, append, as, as, asc, avg, ceiling, cmp, coalesce, concat, concat, contains, convertTo, convertTo, count, countDistinct, day, decode, decode, decode, decode, decode, decode, decodeEnum, decodeSort, desc, divideBy, floor, format, function, getAttribute, getAttribute, getBeanPropertyName, getControlType, getDefaultSortOrder, getExprFromPhrase, getExprFromPhrase, getIgnoreCaseExpr, getJavaType, getNumberType, getOptions, getSourceColumn, getTitle, in, in, in, indexOf, indexOf, indexOf, is, isBetween, isCaseSensitive, isGreaterThan, isLessOrEqual, isLiteralValue, isMoreOrEqual, isNot, isNotBetween, isSmallerThan, length, like, like, likeLower, likeUpper, lower, max, min, minus, minus, modulo, month, multiplyWith, notContains, notIn, notIn, notIn, notLike, nvl, on, parenthesis, plus, plus, prepend, qualified, replace, reverse, round, setAttribute, setBeanPropertyName, setControlType, setDefaultSortOrder, setOptions, setTitle, stringAgg, stringAgg, substring, substring, substring, substring, substring, substring, sum, toChar, toChar, toString, trim, trimLeft, trimRight, trunc, upper, when, year

Methods inherited from class org.apache.empire.db.DBObject

checkParamNull

Methods inherited from class java.lang.Object

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

Field Details

db

public final DBDatabase db

Constructor Details

OracleRowNumExpr

public OracleRowNumExpr(DBDatabase db)

Constructs a new OracleRowNumExpr object.

Parameters:

db - the database

Method Details

getDatabase

public final DBDatabase getDatabase()

Returns the current DBDatabase object.

Specified by:

getDatabase in class DBObject

Returns:

the current DBDatabase object

getDataType

public DataType getDataType()

Returns the data type of the DBColumnExpr object.

Specified by:

getDataType in interface ColumnExpr

Specified by:

getDataType in class DBColumnExpr

Returns:

the data type

See Also:

• DataType

getEnumType

public Class<Enum<?>> getEnumType()

Not an Enum. Returns null

Returns:

the enum type

getName

public String getName()

Returns the column name.

Specified by:

getName in interface ColumnExpr

Specified by:

getName in class DBColumnExpr

Returns:

the column name

addXml

public Element addXml(Element parent,
 long flags)

this helper function calls the DBColumnExpr.addXML(Element, long) method

Specified by:

addXml in class DBColumnExpr

Parameters:

parent - the parent element to which to append the column description

flags - currently not used

Returns:

the newly created child element

getRowSet

public DBRowSet getRowSet()

Returns null.

Specified by:

getRowSet in class DBColumnExpr

Returns:

null

getUpdateColumn

public DBColumn getUpdateColumn()

Returns null.

Specified by:

getUpdateColumn in interface ColumnExpr

Specified by:

getUpdateColumn in class DBColumnExpr

Returns:

null

isAggregate

public boolean isAggregate()

Always returns false

Specified by:

isAggregate in class DBColumnExpr

Returns:

false

addSQL

public void addSQL(DBSQLBuilder sql,
 long context)

Creates the SQL-Command.

Specified by:

addSQL in class DBExpr

Parameters:

sql - the SQL-Command

context - the current SQL-Command context

addReferencedColumns

public void addReferencedColumns(Set<DBColumn> list)

Description copied from class: DBExpr

Internal function to obtain all DBColumnExpr-objects used by this expression.

Specified by:

addReferencedColumns in class DBExpr

Parameters:

list - list to which all used column expressions must be added

See Also:

• DBExpr.addReferencedColumns(Set)

equals

public boolean equals(Object other)

Overrides:

equals in class Object

See Also:

• Object.equals(Object)