package liquibase.statement;

 import java.util.ArrayList;

 import java.util.Arrays;

 import java.util.Collections;

 import java.util.List;

 public class PrimaryKeyConstraint implements ColumnConstraint {

     private String constraintName;

     // used for PK's index configuration

     private String tablespace;

     private List<String> columns = new ArrayList<String>();

     public PrimaryKeyConstraint() {

     }

     public PrimaryKeyConstraint(String constraintName) {

         this.constraintName = constraintName;

     }

     public String getConstraintName() {

         return constraintName;

     }

     public String getTablespace() {

         return tablespace;

     }

     public void setTablespace(String tablespace) {

         this.tablespace = tablespace;

     }

     public List<String> getColumns() {

         return Collections.unmodifiableList(columns);

     }

     public PrimaryKeyConstraint addColumns(String... columns) {

         this.columns.addAll(Arrays.asList(columns));

         return this;

     }

 }