org.sql.generation.api.grammar.common.datatypes.Decimal Maven / Gradle / Ivy

/*
 * Copyright (c) 2010, Stanislav Muhametsin. All Rights Reserved.
 *
 * 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 org.sql.generation.api.grammar.common.datatypes;

/**
 * 
 * This class represents the {@code DECIMAL} data type, sometimes abbreviated as {@code DEC}. The site
 * http://intelligent-enterprise.informationweek.com/000626/celko.jhtml explains difference between {@code NUMERIC} and
 * {@code DECIMAL}:
 * 
 * 
 * The difference between DECIMAL(s,p) and NUMERIC(s,p) is subtle in the SQL-92 Standard -- DECIMAL(s,p) must be exactly
 * as precise as declared, while NUMERIC(s,p) must be at least as precise as declared.
 * 
 * 
 * @author Stanislav Muhametsin
 */
public interface Decimal
    extends SQLDataType, ParametrizableDataType
{

    /**
     * Returns the precision (first integer) for this {@code DECIMAL}.
     * 
     * @return The precision for this {@code DECIMAL}.
     */
    public abstract Integer getPrecision();

    /**
     * Returns the scale (second integer) for this {@code DECIMAL}.
     * 
     * @return The precision for this {@code DECIMAL}.
     */
    public abstract Integer getScale();

}