ConstantField.java

/*
 * GovWay - A customizable API Gateway 
 * https://govway.org
 * 
 * Copyright (c) 2005-2025 Link.it srl (https://link.it).
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 3, as published by
 * the Free Software Foundation.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package org.openspcoop2.generic_project.beans;

import org.openspcoop2.generic_project.exception.ExpressionException;
import org.openspcoop2.generic_project.expression.impl.formatter.BooleanTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.ByteTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.CalendarTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.CharacterTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.DateTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.DoubleTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.FloatTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.IntegerTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.LongTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.NullTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.ObjectFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.ShortTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.StringTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.TimestampTypeFormatter;
import org.openspcoop2.generic_project.expression.impl.formatter.URITypeFormatter;
import org.openspcoop2.utils.TipiDatabase;

/**
 * ConstantField
 * 
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class ConstantField extends Field {

    private Object fieldValue;
    private ObjectFormatter objectFormatter= null;
    
    public ConstantField(String fieldName, Object fieldValue, Class<?> fieldType) throws ExpressionException{
        super(fieldName, fieldType, ConstantField.class.getSimpleName(), ConstantField.class);
        
        this.fieldValue = fieldValue;
        
        // Creo un formatte con alcuni tipi tra quelli supportati complessivamente
        this.objectFormatter = new ObjectFormatter(new BooleanTypeFormatter(),
                new CalendarTypeFormatter(), new DateTypeFormatter(), new TimestampTypeFormatter(),
                new CharacterTypeFormatter(), new StringTypeFormatter(),
                new ByteTypeFormatter(), new ShortTypeFormatter(),
                new IntegerTypeFormatter(), new LongTypeFormatter(),
                new DoubleTypeFormatter(), new FloatTypeFormatter(),
                new URITypeFormatter(), new NullTypeFormatter());
        
        this.objectFormatter.isSupported(this.fieldValue);
            
    }

    public String getConstantValue(TipiDatabase databaseType) throws ExpressionException {
        
        return this.objectFormatter.toSQLString(this.fieldValue, databaseType);
        
    }
    public String getAlias() {
        return this.getFieldName();
    }
    

    @Override
    public String toString(int indent){
        
        StringBuilder indentBuffer = new StringBuilder();
        for (int i = 0; i < indent; i++) {
            indentBuffer.append("   ");
        }
        
        StringBuilder bf = new StringBuilder(super.toString(indent));
        
        bf.append(indentBuffer.toString());
        bf.append("- fieldValue: "+this.fieldValue);
        bf.append("\n");
                
        return bf.toString();
    }

}