ColumnRepImpl.java

/*
 * Distributed as part of mchange-commons-java 0.2.11
 *
 * Copyright (C) 2015 Machinery For Change, Inc.
 *
 * Author: Steve Waldman <swaldman@mchange.com>
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of EITHER:
 *
 *     1) The GNU Lesser General Public License (LGPL), version 2.1, as 
 *        published by the Free Software Foundation
 *
 * OR
 *
 *     2) The Eclipse Public License (EPL), version 1.0
 *
 * You may choose which license to accept if you wish to redistribute
 * or modify this work. You may offer derivatives of this work
 * under the license you have chosen, or you may provide the same
 * choice of license which you have been offered here.
 *
 * This software 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.
 *
 * You should have received copies of both LGPL v2.1 and EPL v1.0
 * along with this software; see the files LICENSE-EPL and LICENSE-LGPL.
 * If not, the text of these licenses are currently available at
 *
 * LGPL v2.1: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
 *  EPL v1.0: http://www.eclipse.org/org/documents/epl-v10.php 
 * 
 */

package com.mchange.v1.db.sql.schemarep;

import java.util.Arrays;
import com.mchange.lang.ArrayUtils;

public class ColumnRepImpl implements ColumnRep
{
    String  colName;
    int     col_type;
    int[]   colSize;
    boolean accepts_nulls;
    Object  defaultValue;

    public ColumnRepImpl(String colName, int col_type)
    { this(colName, col_type, null); }

    public ColumnRepImpl(String colName, int col_type, int[] colSize)
    { this(colName, col_type, colSize, false, null); }

    public ColumnRepImpl(String colName, int col_type, int[] colSize, 
			 boolean accepts_nulls, Object defaultValue)
    {
	this.colName = colName;
	this.col_type = col_type;
	this.colSize = colSize;
	this.accepts_nulls = accepts_nulls;
	this.defaultValue = defaultValue;
    }

    public String getColumnName()
    { return colName; }

    public int getColumnType()
    { return col_type; }

    public int[] getColumnSize()
    { return colSize; }

    public boolean acceptsNulls()
    { return accepts_nulls; }

    public Object getDefaultValue()
    { return defaultValue; }

    public boolean equals( Object o )
    {
	if (o == null || this.getClass() != o.getClass())
	    return false;

	ColumnRepImpl other = (ColumnRepImpl) o;
	if (!this.colName.equals( other.colName ) ||
	    this.col_type != other.col_type ||
	    this.accepts_nulls != other.accepts_nulls)
	    return false;
	
	if (this.colSize != other.colSize && !Arrays.equals(this.colSize, other.colSize)) 
	    return false;
	
	if (this.defaultValue != other.defaultValue &&
	    this.defaultValue != null && 
	    !this.defaultValue.equals( other.defaultValue ))
	    return false;

	return true;
    }

    public int hashCode()
    {
	int out = 
	    colName.hashCode() ^
	    col_type;

	if (! accepts_nulls) out = ~out;

	if (colSize != null)
	    out ^= ArrayUtils.hashAll(colSize);

	if (defaultValue != null)
	    out ^=defaultValue.hashCode();
 
	return out;
    }
}