/**
 * Represents the primary key definition of a class.
 * @since 2.3
 */
public interface PrimaryKeyMetadata extends Metadata {
    /**
     * Method to set the name of the PK constraint.
     * 
     * @param name Name of the PK constraint
     * @return The PK metadata
     */
    PrimaryKeyMetadata setName(String name);

    /**
     * Accessor for the name of the PK constraint.
     * 
     * @return The PK constraint name
     */
    String getName();

    /**
     * Method to set the PK column name.
     * 
     * @param column Name of the PK column
     * @return The PK metadata
     */
    PrimaryKeyMetadata setColumn(String column);

    /**
     * Accessor for the PK column name
     * 
     * @return The column name
     */
    String getColumn();

    /**
     * Accessor for all column(s) defined on the PK.
     * 
     * @return The column(s)
     */
    ColumnMetadata[] getColumns();

    /**
     * Add a new column for this PK
     * 
     * @return The ColumnMetadata
     */
    ColumnMetadata newColumnMetadata();

    /**
     * Accessor for the number of columns defined for this PK
     * 
     * @return The number of columns
     */
    int getNumberOfColumns();
}