SqlOrder (SQL Processor, Core Module 3.2.2 API)

java.lang.Object
- org.sqlproc.engine.SqlOrder

```
public class SqlOrder
extends Object
```
The list of ordering directives for the SQL Processor queries execution. The class layout is based on the Composite design pattern. Instances of this class can be obtained only using one of the factory methods.
For example there's a table PERSON with two columns - ID and NAME. The META SQL query can be the next one:
```
 ALL_PEOPLE(QRY)=
   select ID @id, NAME @name
   from PERSON
   {= where
    {& id=:id}
    {& UPPER(name)=:+name}
   }
   {#1 order by ID}
   {#2 order by NAME}
 ;
 
```
In the case of the SQL Processor invocation
```
 SqlEngine sqlEngine = sqlLoader.getQueryEngine("ALL_PEOPLE");
 List<Person> list = sqlEngine.query(session, Person.class, null, SqlOrder.getAscOrder(1));
 
```
the output list is sorted in ascending order based on the column ID.
In the case of the SQL Processor invocation
```
 SqlEngine sqlEngine = sqlLoader.getQueryEngine("ALL_PEOPLE");
 List<Person> list = sqlEngine.query(session, Person.class, new Object(), SqlOrder.getDescOrder(2));
 
```
the output list is sorted in descending order based on the column NAME.
For more info please see the Tutorials.
Author:

Vladimir Hudec

Nested Class Summary

Nested Classes
Modifier and Type Class and Description

static class SqlOrder.Order
The enumeration for the ordering directives.

Nested Classes
Modifier and Type	Class and Description
`static class`	`SqlOrder.Order` The enumeration for the ordering directives.

Field Summary

Fields
Modifier and Type	Field and Description
`private SqlOrder.Order`	`orderDirection` The ordering direction (no ordering, ascending or descending).
`private String`	`orderId` The ordering id.
`private List<SqlOrder>`	`orders` The list of all ordering directives.

Constructor Summary

Constructors
Modifier	Constructor and Description
`private`	`SqlOrder()` Creates a new empty ordering directive list.
`private`	`SqlOrder(String orderId, SqlOrder.Order orderDirection)` Creates a new ordering directive list.

Method Summary

Methods
Modifier and Type	Method and Description
`SqlOrder`	`addAscOrder(int orderId)` Deprecated.
`SqlOrder`	`addAscOrder(String orderId)` Adds one more ascending ordering directive into the list of ordering directives.
`SqlOrder`	`addAscOrderNullsLast(int orderId)` Deprecated.
`SqlOrder`	`addAscOrderNullsLast(String orderId)` Adds one more ascending ordering directive into the list of ordering directives.
`SqlOrder`	`addDescOrder(int orderId)` Deprecated.
`SqlOrder`	`addDescOrder(String orderId)` Adds one more descending ordering directive into the list of ordering directives.
`SqlOrder`	`addDescOrderNullsFirst(int orderId)` Deprecated.
`SqlOrder`	`addDescOrderNullsFirst(String orderId)` Adds one more descending ordering directive into the list of ordering directives.
`SqlOrder`	`addOrder(int orderId)` Deprecated.
`static SqlOrder`	`getAscOrder(int orderId)` Deprecated.
`static SqlOrder`	`getAscOrder(String orderId)` The factory method.
`static SqlOrder`	`getAscOrderNullsLast(int orderId)` Deprecated.
`static SqlOrder`	`getAscOrderNullsLast(String orderId)` The factory method.
`static SqlOrder`	`getDescOrder(int orderId)` Deprecated.
`static SqlOrder`	`getDescOrder(String orderId)` The factory method.
`static SqlOrder`	`getDescOrderNullsFirst(int orderId)` Deprecated.
`static SqlOrder`	`getDescOrderNullsFirst(String orderId)` The factory method.
`static SqlOrder`	`getOrder()` The factory method.
`static SqlOrder`	`getOrder(int orderId)` Deprecated.
`SqlOrder.Order`	`getOrderDirection()` Returns the ordering direction (no ordering, ascending or descending).
`String`	`getOrderId()` Returns the ordering id.
`List<SqlOrder>`	`getOrders()` Returns the list of ordering directives.
`String`	`toString()` For debug purposes.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - orderId
```
private String orderId
```
    The ordering id. This value should correspond to the order number in the META SQL query {#NNN order by ...}.
  - orderDirection
```
private SqlOrder.Order orderDirection
```
    The ordering direction (no ordering, ascending or descending).
  - orders
```
private List<SqlOrder> orders
```
    The list of all ordering directives.
- Constructor Detail
  - SqlOrder
```
private SqlOrder()
```
    Creates a new empty ordering directive list. This constructor is a private one to prevent an instantiation without the help of factory methods.
  - SqlOrder
```
private SqlOrder(String orderId,
        SqlOrder.Order orderDirection)
```
    Creates a new ordering directive list. This constructor is a private one to prevent an instantiation without the help of factory methods.
    
    Parameters:
    orderId - the ordering id
    orderDirection - the ordering direction
- Method Detail
  - getOrder
```
public static SqlOrder getOrder()
```
    The factory method.
    
    Returns:
    the empty ordering directive list
  - getAscOrder
```
@Deprecated
public static SqlOrder getAscOrder(int orderId)
```
    Deprecated.
    
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one ascending ordering directive
  - getAscOrderNullsLast
```
@Deprecated
public static SqlOrder getAscOrderNullsLast(int orderId)
```
    Deprecated.
    
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one ascending ordering directive
  - getAscOrder
```
public static SqlOrder getAscOrder(String orderId)
```
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one ascending ordering directive
  - getAscOrderNullsLast
```
public static SqlOrder getAscOrderNullsLast(String orderId)
```
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one ascending ordering directive
  - getDescOrder
```
@Deprecated
public static SqlOrder getDescOrder(int orderId)
```
    Deprecated.
    
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one descending ordering directive
  - getDescOrderNullsFirst
```
@Deprecated
public static SqlOrder getDescOrderNullsFirst(int orderId)
```
    Deprecated.
    
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one descending ordering directive
  - getDescOrder
```
public static SqlOrder getDescOrder(String orderId)
```
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one descending ordering directive
  - getDescOrderNullsFirst
```
public static SqlOrder getDescOrderNullsFirst(String orderId)
```
    The factory method.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the ordering directive list with one descending ordering directive
  - getOrder
```
@Deprecated
public static SqlOrder getOrder(int orderId)
```
    Deprecated.
    
    The factory method.
    
    Parameters:
    orderId - the ordering id. Can be a negative one for a descending ordering directive.
    
    Returns:
    the ordering directive list with one ascending or descending ordering directive
  - addAscOrder
```
@Deprecated
public SqlOrder addAscOrder(int orderId)
```
    Deprecated.
    
    Adds one more ascending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addAscOrderNullsLast
```
@Deprecated
public SqlOrder addAscOrderNullsLast(int orderId)
```
    Deprecated.
    
    Adds one more ascending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addAscOrder
```
public SqlOrder addAscOrder(String orderId)
```
    Adds one more ascending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addAscOrderNullsLast
```
public SqlOrder addAscOrderNullsLast(String orderId)
```
    Adds one more ascending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addDescOrder
```
@Deprecated
public SqlOrder addDescOrder(int orderId)
```
    Deprecated.
    
    Adds one more descending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addDescOrderNullsFirst
```
@Deprecated
public SqlOrder addDescOrderNullsFirst(int orderId)
```
    Deprecated.
    
    Adds one more descending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addDescOrder
```
public SqlOrder addDescOrder(String orderId)
```
    Adds one more descending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addDescOrderNullsFirst
```
public SqlOrder addDescOrderNullsFirst(String orderId)
```
    Adds one more descending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id
    
    Returns:
    the updated ordering directive list
  - addOrder
```
@Deprecated
public SqlOrder addOrder(int orderId)
```
    Deprecated.
    
    Adds one more ascending or descending ordering directive into the list of ordering directives.
    
    Parameters:
    orderId - the ordering id. Can be a negative one for a descending ordering directive.
    
    Returns:
    the updated ordering directive list
  - getOrderId
```
public String getOrderId()
```
    Returns the ordering id. This value should correspond to the order number in the META SQL query {#NNN order by ...}.
    
    Returns:
    the ordering id
  - getOrderDirection
```
public SqlOrder.Order getOrderDirection()
```
    Returns the ordering direction (no ordering, ascending or descending).
    
    Returns:
    the ordering direction
  - getOrders
```
public List<SqlOrder> getOrders()
```
    Returns the list of ordering directives.
    
    Returns:
    the list of ordering directives
  - toString
```
public String toString()
```
    For debug purposes.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    a String representation for a debug output

Class SqlOrder

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

orderId

orderDirection

orders

Constructor Detail

SqlOrder

SqlOrder

Method Detail

getOrder

getAscOrder

getAscOrderNullsLast

getAscOrder

getAscOrderNullsLast

getDescOrder

getDescOrderNullsFirst

getDescOrder

getDescOrderNullsFirst

getOrder

addAscOrder

addAscOrderNullsLast

addAscOrder

addAscOrderNullsLast

addDescOrder

addDescOrderNullsFirst

addDescOrder

addDescOrderNullsFirst

addOrder

getOrderId

getOrderDirection

getOrders

toString