Unique (OpenJPA Parent POM 4.0.0 API)

java.lang.Object
- org.apache.openjpa.jdbc.schema.Constraint
- - org.apache.openjpa.jdbc.schema.LocalConstraint
  - - org.apache.openjpa.jdbc.schema.Unique

All Implemented Interfaces:

java.io.Serializable
```
public class Unique
extends LocalConstraint
```
Represents a unique constraint. It can also represent a partial constraint.

Author:

Abe White, Pinaki Poddar

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

Unique()

Unique(java.lang.String name, Table table)
Deprecated.

Unique(DBIdentifier name, Table table)

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`deref()`
`boolean`	`equalsUnique(Unique unq)`	Return true if the structure of this primary key matches that of the given one (same table, same columns).
`int`	`getRefCount()`
`boolean`	`isLogical()`	Return whether this constraint is a logical constraint only; i.e.
`void`	`ref()`
`void`	`setIdentifier(DBIdentifier name)`
`void`	`setName(java.lang.String name)`	Deprecated.

Methods inherited from class org.apache.openjpa.jdbc.schema.LocalConstraint
addColumn, columnsMatch, containsColumn, derefColumns, equalsLocalConstraint, getColumns, refColumns, removeColumn, setColumns

Methods inherited from class org.apache.openjpa.jdbc.schema.Constraint
equals, getColumnIdentifier, getColumnName, getFullIdentifier, getFullName, getIdentifier, getName, getQualifiedPath, getSchemaIdentifier, getSchemaName, getTable, getTableIdentifier, getTableName, hashCode, isDeferred, setColumnIdentifier, setColumnName, setDeferred, setSchemaIdentifier, setSchemaName, setTableIdentifier, setTableName, toString

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

- Constructor Detail
  - Unique
```
public Unique()
```
  - Unique
```
@Deprecated
public Unique(java.lang.String name,
              Table table)
```
    Deprecated.
    
    Construct with given name.
    
    Parameters:
    
    name - the name of the constraint, if any
    
    table - the table of the constraint
  - Unique
```
public Unique(DBIdentifier name,
              Table table)
```
- Method Detail
  - isLogical
```
public boolean isLogical()
```
    Description copied from class: Constraint
    
    Return whether this constraint is a logical constraint only; i.e. if it does not exist in the database.
    
    Specified by:
    
    isLogical in class Constraint
  - setName
```
@Deprecated
public void setName(java.lang.String name)
```
    Deprecated.
    
    Set the name of the constraint. This method cannot be called if the constraint already belongs to a table.
    
    Overrides:
    
    setName in class Constraint
  - setIdentifier
```
public void setIdentifier(DBIdentifier name)
```
    Overrides:
    
    setIdentifier in class Constraint
  - equalsUnique
```
public boolean equalsUnique(Unique unq)
```
    Return true if the structure of this primary key matches that of the given one (same table, same columns).
  - getRefCount
```
public int getRefCount()
```
  - ref
```
public void ref()
```
  - deref
```
public void deref()
```