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Inheritance: java.lang.Object, com.groupdocs.assembly.system.data.Constraint
public class UniqueConstraint extends Constraint
Represents a restriction on a set of mDataColumns in which all values must be unique.
| Constructor | Description |
|---|---|
| UniqueConstraint(String constraintName, DataColumn[] columns, boolean isPK) | Initializes a new instance of the UniqueConstraint with the specified name, DataColumns and the flag which indicates whether this constraint is the primary key. |
| UniqueConstraint(DataColumn[] columns, boolean isPK) | Initializes a new instance of the UniqueConstraint class with an array of DataColumn objects to constrain, and a value specifying whether the constraint is a primary key. |
| UniqueConstraint(DataColumn[] columns) | Initializes a new instance of the UniqueConstraint class with the given array of DataColumn objects. |
| UniqueConstraint(DataColumn column) | Initializes a new instance of the UniqueConstraint class with the given array of DataColumn objects. |
| Method | Description |
|---|---|
| hashCode() | |
| equals(Object key2) | |
| getColumns() | |
| isPrimaryKey() | Gets a value indicating whether or not the constraint is on a primary key. |
| getTable() | Gets the table to which this constraint belongs. |
public UniqueConstraint(String constraintName, DataColumn[] columns, boolean isPK)
Initializes a new instance of the UniqueConstraint with the specified name, DataColumns and the flag which indicates whether this constraint is the primary key.
Parameters:
| Parameter | Type | Description |
|---|---|---|
| constraintName | java.lang.String | name |
| columns | DataColumn[] | an array of DataColumn that this constraint affects. |
| isPK | boolean | flag which indicates whether this constraint is the primary key |
public UniqueConstraint(DataColumn[] columns, boolean isPK)
Initializes a new instance of the UniqueConstraint class with an array of DataColumn objects to constrain, and a value specifying whether the constraint is a primary key.
Parameters:
| Parameter | Type | Description |
|---|---|---|
| columns | DataColumn[] | an array of DataColumn that this constraint affects. |
| isPK | boolean | flag which indicates whether this constraint is the primary key |
public UniqueConstraint(DataColumn[] columns)
Initializes a new instance of the UniqueConstraint class with the given array of DataColumn objects.
Parameters:
| Parameter | Type | Description |
|---|---|---|
| columns | DataColumn[] | an array of DataColumn that this constraint affects. |
public UniqueConstraint(DataColumn column)
Initializes a new instance of the UniqueConstraint class with the given array of DataColumn objects.
Parameters:
| Parameter | Type | Description |
|---|---|---|
| column | DataColumn | one DataColumn that this constraint affects. |
public int hashCode()
Returns: int
public boolean equals(Object key2)
Parameters:
| Parameter | Type | Description |
|---|---|---|
| key2 | java.lang.Object |
Returns: boolean
public DataColumn[] getColumns()
Returns: com.groupdocs.assembly.system.data.DataColumn[] - the array of mDataColumns that this constraint affects.
public boolean isPrimaryKey()
Gets a value indicating whether or not the constraint is on a primary key.
Returns: boolean - value indicating whether or not the constraint is on a primary key.
public DataTable getTable()
Gets the table to which this constraint belongs.
Returns: DataTable - table to which this constraint belongs
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