UniqueConstraintMetadata (EclipseLink JPA 4.0.0 API)

java.lang.Object
- org.eclipse.persistence.internal.jpa.metadata.ORMetadata
- - org.eclipse.persistence.internal.jpa.metadata.tables.UniqueConstraintMetadata

```
public class UniqueConstraintMetadata
extends ORMetadata
```
INTERNAL: Object to hold onto a unique constraint metadata. Key notes: - any metadata mapped from XML to this class must be compared in the equals method. - when loading from annotations, the constructor accepts the metadata accessor this metadata was loaded from. Used it to look up any 'companion' annotation needed for processing. - methods should be preserved in alphabetical order.

Field Summary
- Fields inherited from class org.eclipse.persistence.internal.jpa.metadata.ORMetadata
  m_project

Constructor Summary

Constructors
Constructor	Description
`UniqueConstraintMetadata()`	INTERNAL: Used for XML loading.
`UniqueConstraintMetadata(MetadataAnnotation uniqueConstraint, MetadataAccessor accessor)`	INTERNAL: Used for annotation loading.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object objectToCompare)`	INTERNAL:
`List<String>`	`getColumnNames()`	INTERNAL: Used for OX mapping.
`String`	`getName()`	INTERNAL: Used for OX mapping.
`int`	`hashCode()`
`boolean`	`hasName()`	INTERNAL: Return true if a name has been specified for this unique constraint.
`void`	`setColumnNames(List<String> columnNames)`	INTERNAL: Used for OX mapping.
`void`	`setName(String name)`	INTERNAL: Used for OX mapping.

Methods inherited from class org.eclipse.persistence.internal.jpa.metadata.ORMetadata
getAccessibleObject, getAccessibleObjectName, getAnnotation, getBoxedType, getDatabaseTypeEnum, getEntityMappings, getFullyQualifiedClassName, getIdentifier, getJavaClass, getJavaClassName, getLoader, getLocation, getLogger, getMetadataClass, getMetadataClass, getMetadataClass, getMetadataFactory, getName, getPrimitiveClassForName, getProject, getText, getXMLElement, hasIdentifier, hasText, initXMLClassName, initXMLObject, initXMLObject, initXMLObjects, initXMLTextObject, loadedFromAnnotation, loadedFromEclipseLinkXML, loadedFromXML, merge, mergeORObjectLists, mergeORObjects, mergeSimpleObjects, reloadEntity, reloadMappedSuperclass, setAccessibleObject, setEntityMappings, setFieldName, setFieldName, setProject, shouldOverride, valuesMatch, valuesMatch

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

- Constructor Detail
  - UniqueConstraintMetadata
```
public UniqueConstraintMetadata()
```
    INTERNAL: Used for XML loading.
  - UniqueConstraintMetadata
```
public UniqueConstraintMetadata(MetadataAnnotation uniqueConstraint,
                                MetadataAccessor accessor)
```
    INTERNAL: Used for annotation loading.
- Method Detail
  - equals
```
public boolean equals(Object objectToCompare)
```
    INTERNAL:
    
    Specified by:
    
    equals in class ORMetadata
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - getColumnNames
```
public List<String> getColumnNames()
```
    INTERNAL: Used for OX mapping.
  - getName
```
public String getName()
```
    INTERNAL: Used for OX mapping.
  - hasName
```
public boolean hasName()
```
    INTERNAL: Return true if a name has been specified for this unique constraint.
  - setColumnNames
```
public void setColumnNames(List<String> columnNames)
```
    INTERNAL: Used for OX mapping.
  - setName
```
public void setName(String name)
```
    INTERNAL: Used for OX mapping.