package liquibase.change.core;

 import liquibase.change.AbstractChange;

 import liquibase.change.Change;

 import liquibase.change.ChangeMetaData;

 import liquibase.database.Database;

 import liquibase.statement.SqlStatement;

 import liquibase.statement.core.RenameViewStatement;

 import liquibase.util.StringUtils;

 /**

  * Renames an existing view.

  */

 public class RenameViewChange extends AbstractChange {

     private String schemaName;

     private String oldViewName;

     private String newViewName;

     public RenameViewChange() {

         super("renameView", "Rename View", ChangeMetaData.PRIORITY_DEFAULT);

     }

     public String getSchemaName() {

         return schemaName;

     }

     public void setSchemaName(String schemaName) {

         this.schemaName = StringUtils.trimToNull(schemaName);

     }

     public String getOldViewName() {

         return oldViewName;

     }

     public void setOldViewName(String oldViewName) {

         this.oldViewName = oldViewName;

     }

     public String getNewViewName() {

         return newViewName;

     }

     public void setNewViewName(String newViewName) {

         this.newViewName = newViewName;

     }

     public SqlStatement[] generateStatements(Database database) {

         return new SqlStatement[] { new RenameViewStatement(getSchemaName() == null ? database.getDefaultSchemaName()

                 : getSchemaName(), getOldViewName(), getNewViewName()) };

     }

     @Override

     protected Change[] createInverses() {

         RenameViewChange inverse = new RenameViewChange();

         inverse.setOldViewName(getNewViewName());

         inverse.setNewViewName(getOldViewName());

         return new Change[] { inverse };

     }

     public String getConfirmationMessage() {

         return "View " + oldViewName + " renamed to " + newViewName;

     }

 }