/*
* Copyright 2002-2012 the original author or authors.
*
* 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 org.springframework.integration.xquery.support;
import java.util.ArrayList;
import java.util.List;
import javax.xml.xquery.XQItemType;
import javax.xml.xquery.XQResultSequence;
import org.springframework.integration.MessagingException;
import org.springframework.util.StringUtils;
import org.w3c.dom.Node;
/**
* The Result mapper implementation that maps the {@link XQResultSequence} to {@link Number}
*
* @author Amol Nayak
*
* @since 1.0
*
*/
public class NumberResultMapper extends AbstractXQueryResultMapper<Number> {
public List<Number> mapResults(XQResultSequence result) {
List<Number> results = new ArrayList<Number>();
try {
while(result.next()) {
XQItemType type = result.getItemType();
Number value = convertToNumber(type, result);
if(value == null && isNodeType(type)) {
Node n = result.getNode();
String strValue = transformNodeToString(n);
if(StringUtils.hasText(strValue)) {
if(strValue.indexOf('.') > 0) {
value = Double.valueOf(strValue);
}
else {
value = Long.valueOf(strValue);
}
}
}
results.add(value);
}
} catch (Exception e) {
throw new MessagingException("Caught Exception while mapping the result sequence to string",e);
}
return results;
}
}