java.lang.Object
- org.eclipse.persistence.mappings.querykeys.QueryKey

All Implemented Interfaces:

Serializable, Cloneable

Direct Known Subclasses:

DirectQueryKey, ForeignReferenceQueryKey
```
public class QueryKey
extends Object
implements Cloneable, Serializable
```
Purpose: Define a Java appropriate alias to a database field or function.
Responsibilities:
- Define the name of the alias.
- Define the descriptor of the alias.
See Also:

Serialized Form

Field Summary

Fields
Modifier and Type Field Description

protected ClassDescriptor descriptor

protected String name

Constructor Summary

Constructors
Constructor Description

QueryKey()
Default constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`clone()`	INTERNAL: Clones itself.
`void`	`convertClassNamesToClasses(ClassLoader classLoader)`	INTERNAL: Convert all the class-name-based settings in this QueryKey to actual class-based settings Will be overridded by subclasses
`ClassDescriptor`	`getDescriptor()`	INTERNAL: Return the descriptor.
`String`	`getName()`	PUBLIC: Return the name for the query key.
`void`	`initialize(ClassDescriptor aDescriptor)`	INTERNAL: Initialize any information in the receiver that requires its descriptor.
`boolean`	`isAbstractQueryKey()`	INTERNAL: return whether this query key is abstract
`boolean`	`isCollectionQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isDirectCollectionQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isDirectQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isForeignReferenceQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isManyToManyQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isOneToManyQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isOneToOneQueryKey()`	PUBLIC:: Related query key should implement this method to return true.
`boolean`	`isQueryKey()`	INTERNAL: This is a QueryKey.
`void`	`setDescriptor(ClassDescriptor descriptor)`	INTERNAL: Set the descriptor.
`void`	`setName(String name)`	PUBLIC: Set the name for the query key.
`String`	`toString()`	INTERNAL: return a string representation of this instance of QueryKey

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

- Field Detail
  - name
```
protected String name
```
  - descriptor
```
protected ClassDescriptor descriptor
```
- Constructor Detail
  - QueryKey
```
public QueryKey()
```
    Default constructor.
- Method Detail
  - clone
```
public Object clone()
```
    INTERNAL: Clones itself.
    
    Overrides:
    
    clone in class Object
  - convertClassNamesToClasses
```
public void convertClassNamesToClasses(ClassLoader classLoader)
```
    INTERNAL: Convert all the class-name-based settings in this QueryKey to actual class-based settings Will be overridded by subclasses
  - getDescriptor
```
public ClassDescriptor getDescriptor()
```
    INTERNAL: Return the descriptor.
  - getName
```
public String getName()
```
    PUBLIC: Return the name for the query key. This is the name that will be used in the expression.
  - initialize
```
public void initialize(ClassDescriptor aDescriptor)
```
    INTERNAL: Initialize any information in the receiver that requires its descriptor. Set the receiver's descriptor back reference.
    
    Parameters:
    
    aDescriptor - is the owner descriptor of the receiver.
  - isAbstractQueryKey
```
public boolean isAbstractQueryKey()
```
    INTERNAL: return whether this query key is abstract
    
    Returns:
    
    boolean
  - isCollectionQueryKey
```
public boolean isCollectionQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isDirectCollectionQueryKey
```
public boolean isDirectCollectionQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isDirectQueryKey
```
public boolean isDirectQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isForeignReferenceQueryKey
```
public boolean isForeignReferenceQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isManyToManyQueryKey
```
public boolean isManyToManyQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isOneToManyQueryKey
```
public boolean isOneToManyQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isOneToOneQueryKey
```
public boolean isOneToOneQueryKey()
```
    PUBLIC:: Related query key should implement this method to return true.
  - isQueryKey
```
public boolean isQueryKey()
```
    INTERNAL: This is a QueryKey. return true.
    
    Returns:
    
    boolean
  - setDescriptor
```
public void setDescriptor(ClassDescriptor descriptor)
```
    INTERNAL: Set the descriptor.
  - setName
```
public void setName(String name)
```
    PUBLIC: Set the name for the query key. This is the name that will be used in the expression.
  - toString
```
public String toString()
```
    INTERNAL: return a string representation of this instance of QueryKey
    
    Overrides:
    
    toString in class Object

Modifier and Type	Field	Description
`protected ClassDescriptor`	`descriptor`
`protected String`	`name`

Class QueryKey

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

name

descriptor

Constructor Detail

QueryKey

Method Detail

clone

convertClassNamesToClasses

getDescriptor

getName

initialize

isAbstractQueryKey

isCollectionQueryKey

isDirectCollectionQueryKey

isDirectQueryKey

isForeignReferenceQueryKey

isManyToManyQueryKey

isOneToManyQueryKey

isOneToOneQueryKey

isQueryKey

setDescriptor

setName

toString