FlatXmlDataSetBuilder.java
/*
*
* The DbUnit Database Testing Framework
* Copyright (C)2002-2009, 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.dataset.xml;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.net.MalformedURLException;
import java.net.URL;
import org.dbunit.dataset.DataSetException;
import org.dbunit.dataset.IDataSet;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.xml.sax.InputSource;
/**
* Builder for the creation of {@link FlatXmlDataSet} instances.
*
* @see FlatXmlDataSet
* @author gommma (gommma AT users.sourceforge.net)
* @author Last changed by: $Author$
* @version $Revision$ $Date$
* @since 2.4.7
*/
public final class FlatXmlDataSetBuilder
{
/**
* Logger for this class
*/
private static final Logger logger = LoggerFactory.getLogger(FlatXmlDataSetBuilder.class);
/**
* The metadata (column information etc.) for the flat XML to be built.
* If this is set the builder properties
* <ul>
* <li>{@link #columnSensing}</li>
* <li>{@link #caseSensitiveTableNames}</li>
* <li>{@link #dtdMetadata}</li>
* </ul>
* are <b>not</b> regarded.
*/
private IDataSet metaDataSet = null;
/**
* Whether or not DTD metadata is available to parse via a DTD handler. Defaults to {@value}
*/
private boolean dtdMetadata = true;
//TODO Think about this: should we use "columnSensing=true" by default if no DTD is specified? To avoid e.g. bug reports like #2812985 https://sourceforge.net/tracker/?func=detail&atid=449491&aid=2812985&group_id=47439
/**
* Since DBUnit 2.3.0 there is a functionality called "column sensing" which basically
* reads in the whole XML into a buffer and dynamically adds new columns as they appear.
* Defaults to {@value}
*/
private boolean columnSensing = false;
/**
* Whether or not the created dataset should use case sensitive table names
* Defaults to {@value}
*/
private boolean caseSensitiveTableNames = false;
/**
* Default constructor
*/
public FlatXmlDataSetBuilder()
{
}
/**
* Sets the flat XML input source from which the {@link FlatXmlDataSet} is to be built
* @param inputSource The flat XML input as {@link InputSource}
* @return The created {@link FlatXmlDataSet}
* @throws DataSetException
*/
public FlatXmlDataSet build(InputSource inputSource) throws DataSetException
{
return buildInternal(inputSource);
}
/**
* Sets the flat XML input source from which the {@link FlatXmlDataSet} is to be built
* @param xmlInputFile The flat XML input as {@link File}
* @return The created {@link FlatXmlDataSet}
* @throws DataSetException
*/
public FlatXmlDataSet build(File xmlInputFile) throws MalformedURLException, DataSetException
{
URL xmlInputUrl = xmlInputFile.toURL();
InputSource inputSource = createInputSourceFromUrl(xmlInputUrl);
return buildInternal(inputSource);
}
/**
* Sets the flat XML input source from which the {@link FlatXmlDataSet} is to be built
* @param xmlInputUrl The flat XML input as {@link URL}
* @return The created {@link FlatXmlDataSet}
* @throws DataSetException
*/
public FlatXmlDataSet build(URL xmlInputUrl) throws DataSetException
{
InputSource inputSource = createInputSourceFromUrl(xmlInputUrl);
return buildInternal(inputSource);
}
/**
* Sets the flat XML input source from which the {@link FlatXmlDataSet} is to be built
* @param xmlReader The flat XML input as {@link Reader}
* @return The created {@link FlatXmlDataSet}
* @throws DataSetException
*/
public FlatXmlDataSet build(Reader xmlReader) throws DataSetException
{
InputSource inputSource = new InputSource(xmlReader);
return buildInternal(inputSource);
}
/**
* Sets the flat XML input source from which the {@link FlatXmlDataSet} is to be built
* @param xmlInputStream The flat XML input as {@link InputStream}
* @return The created {@link FlatXmlDataSet}
* @throws DataSetException
*/
public FlatXmlDataSet build(InputStream xmlInputStream) throws DataSetException
{
InputSource inputSource = new InputSource(xmlInputStream);
return buildInternal(inputSource);
}
/**
* Utility method to create an {@link InputSource} object from a URL
* @param xmlInputUrl
* @return
*/
private InputSource createInputSourceFromUrl(URL xmlInputUrl)
{
String stringUrl = xmlInputUrl.toString();
return new InputSource(stringUrl);
}
/**
* Set the metadata information (column info etc.) to be used. May come from a DTD.
* This has precedence to the other builder's properties.
* @param metaDataSet
* @return this
*/
public FlatXmlDataSetBuilder setMetaDataSet(IDataSet metaDataSet)
{
this.metaDataSet = metaDataSet;
return this;
}
/**
* Set the metadata information (column info etc.) to be used from the given DTD input.
* This has precedence to the other builder's properties.
* @param dtdReader A reader that provides the DTD content
* @throws DataSetException
* @throws IOException
* @return this
*/
public FlatXmlDataSetBuilder setMetaDataSetFromDtd(Reader dtdReader) throws DataSetException, IOException
{
this.metaDataSet = new FlatDtdDataSet(dtdReader);
return this;
}
/**
* Set the metadata information (column info etc.) to be used from the given DTD input.
* This has precedence to the other builder's properties.
* @param dtdStream
* @throws DataSetException
* @throws IOException
* @return this
*/
public FlatXmlDataSetBuilder setMetaDataSetFromDtd(InputStream dtdStream) throws DataSetException, IOException
{
this.metaDataSet = new FlatDtdDataSet(dtdStream);
return this;
}
public boolean isDtdMetadata() {
return dtdMetadata;
}
/**
* Whether or not DTD metadata is available to parse via a DTD handler.
* @param dtdMetadata
* @return this
*/
public FlatXmlDataSetBuilder setDtdMetadata(boolean dtdMetadata) {
this.dtdMetadata = dtdMetadata;
return this;
}
public boolean isColumnSensing() {
return columnSensing;
}
/**
* Since DBUnit 2.3.0 there is a functionality called "column sensing" which basically
* reads in the whole XML into a buffer and dynamically adds new columns as they appear.
* @param columnSensing
* @return this
*/
public FlatXmlDataSetBuilder setColumnSensing(boolean columnSensing) {
this.columnSensing = columnSensing;
return this;
}
public boolean isCaseSensitiveTableNames() {
return caseSensitiveTableNames;
}
/**
* Whether or not the created dataset should use case sensitive table names
* @param caseSensitiveTableNames
* @return this
*/
public FlatXmlDataSetBuilder setCaseSensitiveTableNames(boolean caseSensitiveTableNames) {
this.caseSensitiveTableNames = caseSensitiveTableNames;
return this;
}
/**
* Builds the {@link FlatXmlDataSet} from the parameters that are currently set on this builder
* @param inputSource The XML input to be built
* @return The {@link FlatXmlDataSet} built from the configuration of this builder.
* @throws DataSetException
*/
private FlatXmlDataSet buildInternal(InputSource inputSource) throws DataSetException
{
logger.trace("build(inputSource={}) - start", inputSource);
// Validate required parameters
if(inputSource==null)
{
throw new NullPointerException("The parameter 'inputSource' must not be null");
}
// Create the flat XML IDataSet
logger.debug("Creating FlatXmlDataSet with builder parameters: {}", this);
FlatXmlProducer producer = createProducer(inputSource);
return new FlatXmlDataSet(producer);
}
/**
* @param inputSource The XML input to be built
* @return The producer which is used to create the {@link FlatXmlDataSet}
*/
protected FlatXmlProducer createProducer(InputSource inputSource)
{
logger.trace("createProducer(inputSource={}) - start", inputSource);
FlatXmlProducer producer = null;
if(this.metaDataSet!=null)
{
logger.debug("Creating FlatXmlProducer using the following metaDataSet: {}", this.metaDataSet);
producer = new FlatXmlProducer(inputSource, this.metaDataSet);
}
else
{
logger.debug("Creating FlatXmlProducer using the properties of this builder: {}", this);
producer = new FlatXmlProducer(
inputSource, this.dtdMetadata, this.columnSensing, this.caseSensitiveTableNames);
}
return producer;
}
public String toString()
{
StringBuffer sb = new StringBuffer();
sb.append(getClass().getName()).append("[");
sb.append("dtdMetadata=").append(dtdMetadata);
sb.append(", columnSensing=").append(columnSensing);
sb.append(", caseSensitiveTableNames=").append(caseSensitiveTableNames);
sb.append(", metaDataSet=").append(metaDataSet);
sb.append("]");
return sb.toString();
}
}