UniqueConstraint

Inheritance: java.lang.Object, com.groupdocs.assembly.system.data.Constraint

public class UniqueConstraint extends Constraint

Represents a restriction on a set of columns in which all values must be unique.

Constructors

Constructor	Description
UniqueConstraint(String name, DataColumn[] columns, boolean isPrimaryKey)	Initializes a new instance of the UniqueConstraint class with the specified name, an array of DataColumn objects to constrain, and a value specifying whether the constraint is a primary key.
UniqueConstraint(DataColumn[] columns, boolean isPrimaryKey)	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 specified DataColumn.

Methods

Method	Description
hashCode()
equals(Object key2)	Compares this constraint to a second to determine if both are identical.
getColumns()	Gets the array of columns that this constraint affects.
isPrimaryKey()	Gets a value indicating whether or not the constraint is on a primary key.
getTable()	Gets the table to which this constraint belongs.

UniqueConstraint(String name, DataColumn[] columns, boolean isPrimaryKey)

public UniqueConstraint(String name, DataColumn[] columns, boolean isPrimaryKey)

Initializes a new instance of the UniqueConstraint class with the specified name, an array of DataColumn objects to constrain, and a value specifying whether the constraint is a primary key.

Parameters:

Parameter	Type	Description
name	java.lang.String	The name of the constraint.
columns	DataColumn[]	An array of DataColumn objects to constrain.
isPrimaryKey	boolean	true to indicate that the constraint is a primary key; otherwise, false.

UniqueConstraint(DataColumn[] columns, boolean isPrimaryKey)

public UniqueConstraint(DataColumn[] columns, boolean isPrimaryKey)

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 objects to constrain.
isPrimaryKey	boolean	true to indicate that the constraint is a primary key; otherwise, false.

UniqueConstraint(DataColumn[] columns)

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[]	The array of DataColumn objects to constrain.

UniqueConstraint(DataColumn column)

public UniqueConstraint(DataColumn column)

Initializes a new instance of the UniqueConstraint class with the specified DataColumn.

Parameters:

Parameter	Type	Description
column	DataColumn	The DataColumn to constrain.

hashCode()

public int hashCode()

Returns: int

equals(Object key2)

public boolean equals(Object key2)

Compares this constraint to a second to determine if both are identical.

Parameters:

Parameter	Type	Description
key2	java.lang.Object	The object to which this UniqueConstraint is compared.

Returns: boolean - true, if the contraints are equal; otherwise, false.

getColumns()

public DataColumn[] getColumns()

Gets the array of columns that this constraint affects.

Returns: com.groupdocs.assembly.system.data.DataColumn[] - An array of DataColumn objects.

isPrimaryKey()

public boolean isPrimaryKey()

Gets a value indicating whether or not the constraint is on a primary key.

Returns: boolean - true, if the constraint is on a primary key; otherwise, false.

getTable()

public DataTable getTable()

Gets the table to which this constraint belongs.

Returns: DataTable - The DataTable to which the constraint belongs.