org.databene.jdbacl.identity.NKBuilder Maven / Gradle / Ivy
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jdbacl stands for 'Java DataBase ACcess Layer' and provides utilities for accessing JDBC databases from
Java programs, retrieving meta information in an object model and querying database data.
/*
* (c) Copyright 2010 by Volker Bergmann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted under the terms of the
* GNU General Public License (GPL).
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
* REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.databene.jdbacl.identity;
/**
* Parent for classes that map between primary key and natural keys
* of table rows in different tables in one or more source databases and one target database.
* Created: 08.13.2010 13:38:21
* @since 0.6.4
* @author Volker Bergmann
*/
public class NKBuilder {
StringBuilder builder;
boolean empty;
public NKBuilder() {
this.builder = new StringBuilder();
this.empty = true;
}
public void addComponent(Object component) {
if (!empty)
builder.append('|');
builder.append(component != null ? component.toString() : "");
empty = false;
}
@Override
public String toString() {
return builder.toString();
}
}