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    • com.jporm.sql.query.select.groupby.GroupByImpl Maven / Gradle / Ivy

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    /*******************************************************************************
 * Copyright 2013 Francesco Cina'
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/
package com.jporm.sql.query.select.groupby;

import java.util.List;

import com.jporm.sql.query.SqlSubElement;
import com.jporm.sql.query.select.Select;
import com.jporm.sql.query.where.WhereExpressionElement;
import com.jporm.sql.query.where.expression.CustomExpressionElement;

/**
 *
 * @author Francesco Cina
 *
 *         24/giu/2011
 */
public abstract class GroupByImpl> implements GroupBy, SqlSubElement {

    private String[] fields = new String[0];
    private WhereExpressionElement _exp;
    private Select select;

    public GroupByImpl(Select select) {
        this.select = select;
    }

    @Override
    public final void sqlElementValues(final List values) {
        if (_exp != null) {
            _exp.sqlElementValues(values);
        }
    }

    @Override
    public final void sqlValues(List values) {
        select.sqlValues(values);
    }

    @Override
    public final void sqlQuery(StringBuilder queryBuilder) {
        select.sqlQuery(queryBuilder);
    }

    @Override
    public final GROUP_BY fields(String... fields) {
        if (fields.length>0) {
            this.fields = fields;
        }
        return getGroupBy();
    }

    @Override
    public final GROUP_BY having(String havingClause, Object... args) {
        _exp = new CustomExpressionElement(havingClause, args);
        return getGroupBy();
    }

    private GROUP_BY getGroupBy() {
        return (GROUP_BY) this;
    }

    /**
     * @return the fields
     */
    public String[] getFields() {
        return fields;
    }

    /**
     * @return the _exp
     */
    public WhereExpressionElement getHavingExpression() {
        return _exp;
    }

}
    
    
    
    

    




    
    
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