columndatatypechange.java

OBPM是一个开源

package org.apache.ddlutils.alteration;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import org.apache.ddlutils.model.Column;
import org.apache.ddlutils.model.Database;
import org.apache.ddlutils.model.Table;

/**
 * Represents the change of the data type of a column.
 * 
 * @version $Revision: $
 */
public class ColumnDataTypeChange extends TableChangeImplBase implements ColumnChange
{
    /** The column. */
    private Column _column;
    /** The JDBC type code of the new type. */
    private int _newTypeCode;

    /**
     * Creates a new change object.
     * 
     * @param table       The table of the column
     * @param column      The column
     * @param newTypeCode The JDBC type code of the new type
     */
    public ColumnDataTypeChange(Table table, Column column, int newTypeCode)
    {
        super(table);
        _column      = column;
        _newTypeCode = newTypeCode;
    }

    /**
     * Returns the column.
     *
     * @return The column
     */
    public Column getChangedColumn()
    {
        return _column;
    }

    /**
     * Returns the JDBC type code of the new type.
     *
     * @return The type code
     */
    public int getNewTypeCode()
    {
        return _newTypeCode;
    }

    /**
     * {@inheritDoc}
     */
    public void apply(Database database, boolean caseSensitive)
    {
        Table  table  = database.findTable(getChangedTable().getName(), caseSensitive);
        Column column = table.findColumn(_column.getName(), caseSensitive);

        column.setTypeCode(_newTypeCode);
    }
}