/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package openbook.server;
import javax.persistence.Query;
/**
* Decorates a query by binding parameters.
*
* @author Pinaki Poddar
*
*/
public class QueryParameterBinder implements QueryDecorator {
private final Object[] params;
/**
* Construct a parameter binder with the given parameters.
*/
public QueryParameterBinder(Object...params) {
this.params = params;
}
@Override
public void decorate(Query query) {
if (params == null)
return;
for (int i = 0; i < params.length; i += 2) {
if (params[i] instanceof Integer) {
query.setParameter((Integer)params[i], params[i+1]);
} else if (params[i] instanceof String) {
query.setParameter((String)params[i], params[i+1]);
} else {
throw new IllegalArgumentException("Parameter index " + params[i] +
" is neither and integer nor String");
}
}
}
}