/*
* JBoss, Home of Professional Open Source.
* See the COPYRIGHT.txt file distributed with this work for information
* regarding copyright ownership. Some portions may be licensed
* to Red Hat, Inc. under one or more contributor license agreements.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA.
*/
package org.teiid.core.types.basic;
import java.io.IOException;
import java.io.Reader;
import java.sql.SQLException;
import org.teiid.core.CorePlugin;
import org.teiid.core.types.DataTypeManager;
import org.teiid.core.types.TransformationException;
import org.teiid.core.types.XMLType;
import org.teiid.core.types.DataTypeManager.DefaultDataClasses;
public class SQLXMLToStringTransform extends AnyToStringTransform {
public SQLXMLToStringTransform() {
super(DefaultDataClasses.XML);
}
/**
* This method transforms a value of the source type into a value
* of the target type.
* @param value Incoming value of source type
* @return Outgoing value of target type
* @throws TransformationException if value is an incorrect input type or
* the transformation fails
*/
public Object transformDirect(Object value) throws TransformationException {
XMLType source = (XMLType)value;
Reader reader = null;
try {
char[] result = new char[DataTypeManager.MAX_STRING_LENGTH];
reader = source.getCharacterStream();
int read = reader.read(result);
return new String(result, 0, read);
} catch (SQLException e) {
throw new TransformationException(e, CorePlugin.Util.getString("failed_convert", new Object[] {getSourceType().getName(), getTargetType().getName()})); //$NON-NLS-1$
} catch (IOException e) {
throw new TransformationException(e, CorePlugin.Util.getString("failed_convert", new Object[] {getSourceType().getName(), getTargetType().getName()})); //$NON-NLS-1$
} finally {
try {
if (reader != null) {
reader.close();
}
} catch (IOException e) {
}
}
}
/**
* @see org.teiid.core.types.Transform#isExplicit()
*/
public boolean isExplicit() {
return true;
}
}