DayFormatExpressionSQL.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.expression.impl.sql;

import java.util.List;
import java.util.Map;

import org.openspcoop2.generic_project.beans.IField;
import org.openspcoop2.generic_project.exception.ExpressionException;
import org.openspcoop2.generic_project.expression.impl.DayFormatExpressionImpl;
import org.openspcoop2.generic_project.expression.impl.formatter.IObjectFormatter;
import org.openspcoop2.utils.TipiDatabase;
import org.openspcoop2.utils.sql.DayFormatEnum;
import org.openspcoop2.utils.sql.ISQLQueryObject;
import org.openspcoop2.utils.sql.SQLObjectFactory;
import org.openspcoop2.utils.sql.SQLQueryObjectCore;

/**
 * LikeExpressionSQL
 * 
 * @author Poli Andrea (apoli@link.it)
 * @author $Author$
 * @version $Rev$, $Date$
 */
public class DayFormatExpressionSQL extends DayFormatExpressionImpl implements ISQLExpression {

    private ISQLFieldConverter sqlFieldConverter;
    
    public DayFormatExpressionSQL(ISQLFieldConverter sqlFieldConverter,IObjectFormatter objectFormatter, IField field,
            String value, DayFormatEnum dayFormatEnum) {
        super(objectFormatter, field, value, dayFormatEnum);
        this.sqlFieldConverter = sqlFieldConverter;
    }

    private SQLQueryObjectCore getSQLQueryObjectCore(ISQLQueryObject sqlQueryObject) throws ExpressionException {
        if(sqlQueryObject==null) {
            try {
                // uso uno di default
                if(this.sqlFieldConverter!=null && this.sqlFieldConverter.getDatabaseType()!=null) {
                    sqlQueryObject = SQLObjectFactory.createSQLQueryObject(this.sqlFieldConverter.getDatabaseType());
                }
                else {
                    sqlQueryObject = SQLObjectFactory.createSQLQueryObject(TipiDatabase.POSTGRESQL); // uso come default
                }
            }catch(Exception e) {
                throw new ExpressionException(e.getMessage(),e);
            }
        }
        return (SQLQueryObjectCore) sqlQueryObject;
    }
    
    private String toSqlEngine(SQLMode mode,ISQLQueryObject sqlQueryObject,List<?> oggettiPreparedStatement,Map<String, ?> oggettiJPA)throws ExpressionException{
        
        if(mode!=null) {
            // nop
        }
        if(oggettiPreparedStatement!=null) {
            // nop
        }
        if(oggettiJPA!=null) {
            // nop
        }
        
        StringBuilder bf = new StringBuilder();
        if(isNot()){
            bf.append("( NOT ");
        }
        bf.append("( ");
        
        SQLQueryObjectCore sqlObjectCore = getSQLQueryObjectCore(sqlQueryObject);
        
        try {
            String prefix = sqlObjectCore.getExtractDayFormatFromTimestampFieldPrefix(this.dayFormatEnum);
            bf.append(prefix);
        }catch(Exception e) {
            throw new ExpressionException(e.getMessage(),e);
        }
        
        if(this.sqlFieldConverter!=null) {
            bf.append(this.sqlFieldConverter.toColumn(this.getField(),true));
        }
        else {
            bf.append(this.getField().getFieldName());
        }

        try {
            String suffix = sqlObjectCore.getExtractDayFormatFromTimestampFieldSuffix(this.dayFormatEnum);
            bf.append(" ");
            bf.append(suffix);
        }catch(Exception e) {
            throw new ExpressionException(e.getMessage(),e);
        }
        
        bf.append(" = '");
        String sqlValue = null;
        try{
            sqlValue = super.getObjectFormatter().toString(this.getValue());
        }catch(Exception e){
            return "ERROR: "+e.getMessage();
        }
        bf.append(sqlValue);
        bf.append("'");
        
        bf.append(" )");
        if(isNot()){
            bf.append(" )");
        }
        return bf.toString();
    }
    
    private void toSqlEngine(ISQLQueryObject sqlQueryObject,SQLMode mode,List<Object> oggettiPreparedStatement,Map<String, Object> oggettiJPA)throws ExpressionException{
        try{
            String s = toSqlEngine(mode, sqlQueryObject, oggettiPreparedStatement, oggettiJPA);
            s = s.substring(1,s.length()-2);
            sqlQueryObject.addWhereCondition(s);
        }catch(Exception e){
            throw new ExpressionException(e);
        }
    }
    
    @Override
    public String toSql() throws ExpressionException {
        return toSqlEngine(SQLMode.STANDARD, null, null, null);
    }

    @Override
    public String toSqlPreparedStatement(List<Object> oggetti)
            throws ExpressionException {
        return toSqlEngine(SQLMode.PREPARED_STATEMENT, null, oggetti, null);
    }

    @Override
    public String toSqlJPA(Map<String, Object> oggetti)
            throws ExpressionException {
        return toSqlEngine(SQLMode.JPA, null, null, oggetti);
    }
    
    @Override
    public void toSql(ISQLQueryObject sqlQueryObject) throws ExpressionException {
        toSqlEngine(sqlQueryObject,SQLMode.STANDARD, null, null);
    }

    @Override
    public void toSqlPreparedStatement(ISQLQueryObject sqlQueryObject,List<Object> oggetti)
            throws ExpressionException {
        toSqlEngine(sqlQueryObject,SQLMode.PREPARED_STATEMENT, oggetti, null);
    }

    @Override
    public void toSqlJPA(ISQLQueryObject sqlQueryObject,Map<String, Object> oggetti)
            throws ExpressionException {
        toSqlEngine(sqlQueryObject,SQLMode.JPA, null, oggetti);
    }
    
}