/*
* (c) Copyright 2009-2011 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.
*
* For redistributing this software or a derivative work under a license other
* than the GPL-compatible Free Software License as defined by the Free
* Software Foundation or approved by OSI, you must first obtain a commercial
* license to this software product from Volker Bergmann.
*
* 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.benerator.wrapper;
import org.databene.benerator.Generator;
/**
* {@link Generator} implementation that wraps several String generators
* and concatenates their results to a composite {@link String}.<br/>
* <br/>
* Created at 21.09.2009 18:54:32
* @since 0.6.0
* @author Volker Bergmann
*/
public class ConcatenatingGenerator extends GeneratorWrapper<String[], String> {
private String separator;
public ConcatenatingGenerator(Generator<String[]> source) {
this(source, "");
}
public ConcatenatingGenerator(Generator<String[]> source, String separator) {
super(source);
this.separator = separator;
}
public String getSeparator() {
return separator;
}
// Generator interface implementation ------------------------------------------------------------------------------
public Class<String> getGeneratedType() {
return String.class;
}
public ProductWrapper<String> generate(ProductWrapper<String> wrapper) {
ProductWrapper<String[]> sourceWrapper = generateFromSource();
if (sourceWrapper == null)
return null;
String[] parts = sourceWrapper.unwrap();
if (parts.length > 0) {
StringBuilder builder = new StringBuilder();
builder.append(parts[0]);
for (int i = 1; i < parts.length; i++) {
String part = parts[i];
builder.append(separator).append(part);
}
return wrapper.wrap(builder.toString());
} else
return wrapper.wrap("");
}
}