/*
* 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.sql.SQLException;
import org.teiid.core.CorePlugin;
import org.teiid.core.types.BinaryType;
import org.teiid.core.types.BlobType;
import org.teiid.core.types.DataTypeManager;
import org.teiid.core.types.Transform;
import org.teiid.core.types.TransformationException;
import org.teiid.core.util.ObjectConverterUtil;
public class BlobToBinaryTransform extends Transform {
/**
* 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 {
BlobType source = (BlobType)value;
try {
byte[] bytes = ObjectConverterUtil.convertToByteArray(source.getBinaryStream(), DataTypeManager.MAX_VARBINARY_BYTES, true);
return new BinaryType(bytes);
} catch (SQLException e) {
throw new TransformationException(CorePlugin.Event.TEIID10080, e, CorePlugin.Util.gs(CorePlugin.Event.TEIID10080, new Object[] {getSourceType().getName(), getTargetType().getName()}));
} catch(IOException e) {
throw new TransformationException(CorePlugin.Event.TEIID10080, e, CorePlugin.Util.gs(CorePlugin.Event.TEIID10080, new Object[] {getSourceType().getName(), getTargetType().getName()}));
}
}
/**
* @see org.teiid.core.types.Transform#isExplicit()
*/
public boolean isExplicit() {
return true;
}
@Override
public Class<?> getSourceType() {
return DataTypeManager.DefaultDataClasses.BLOB;
}
@Override
public Class<?> getTargetType() {
return DataTypeManager.DefaultDataClasses.VARBINARY;
}
}