?? foreignkeyrelationshipedge.java
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/*
*
* The DbUnit Database Testing Framework
* Copyright (C)2005, DbUnit.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
package org.dbunit.database.search;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.dbunit.util.search.Edge;
/**
* Implementation of an edge representing a foreign key (FK) relationship between two
* tables.<br>
* The <code>from</code> node is the table which have the FK, while the
* <code>to</code> node is the table with the PK. In other words, the edge
* A->B means FK(A) = PK(B).<br>
*
* <strong>NOTE:</strong> only single-column PKs are supported at this moment
*
* @author Felipe Leme <dbunit@felipeal.net>
* @version $Revision: 554 $
* @since Sep 9, 2005
*/
public class ForeignKeyRelationshipEdge extends Edge {
/**
* Logger for this class
*/
private static final Logger logger = LoggerFactory.getLogger(ForeignKeyRelationshipEdge.class);
private String fkColumn;
private String pkColumn;
/**
* Creates an edge representing a FK.
* @param tableFrom table that has the FK
* @param tableTo table that has the PK
* @param fkColumn name of the FK column on tableFrom
* @param pkColumn name of the PK column on tableTo
*/
public ForeignKeyRelationshipEdge(String tableFrom, String tableTo, String fkColumn, String pkColumn) {
super(tableFrom, tableTo);
this.fkColumn = fkColumn;
this.pkColumn = pkColumn;
}
/**
* Gets the name of the foreign key column in the relationship.
* @return name of the foreign key column in the relationship.
*/
public String getFKColumn() {
logger.debug("getFKColumn() - start");
return fkColumn;
}
/**
* Gets the name of the primary key column in the relationship.
* @return name of the primary key column in the relationship.
*/
public String getPKColumn() {
logger.debug("getPKColumn() - start");
return pkColumn;
}
public String toString() {
logger.debug("toString() - start");
return getFrom() + "(" + getFKColumn() + ")->" + getTo() + "(" + getPKColumn() + ")";
}
}
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