/**
* Copyright (c) 2011-2014, OpenIoT
*
* This file is part of OpenIoT.
*
* OpenIoT is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* OpenIoT is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with OpenIoT. If not, see <http://www.gnu.org/licenses/>.
*
* Contact: OpenIoT mailto: info@openiot.eu
*/
package org.openiot.ui.request.definition.web.sparql.nodes.base;
import java.io.Serializable;
public class Expression extends AbstractSparqlNode implements Serializable{
private static final long serialVersionUID = 1L;
private String expr;
public Expression(String expr) {
super();
this.expr = expr;
}
@Override
public String generate() {
if( expr == null || expr.isEmpty() ){
return "";
}
return generatePad(getDepth()) + expr;
}
@Override public boolean equals(Object aThat) {
//check for self-comparison
if ( this == aThat ) return true;
if ( !(aThat instanceof Expression) ){
return false;
}
//cast to native object is now safe
Expression that = (Expression)aThat;
return expr.equals(that.expr);
}
}