/*
* Copyright 2004,2005 The Apache Software Foundation.
*
* 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.wso2.carbon.cep.core.internal.config;
import org.wso2.carbon.cep.core.Query;
import org.wso2.carbon.cep.core.internal.util.CEPConstants;
import org.apache.axiom.om.OMElement;
import javax.xml.namespace.QName;
/**
* This class will help to build Query object from a given OMElement
*/
public class QueryHelper {
public static Query fromOM(OMElement queryElement) {
Query query = new Query();
String name = queryElement.getAttribute(new QName(CEPConstants.CEP_CONF_ELE_NAME)).getAttributeValue();
query.setName(name);
OMElement expressionElement = queryElement.getFirstChildWithName(new QName(CEPConstants.CEP_CONF_NAMESPACE,
CEPConstants.CEP_CONF_ELE_EXPRESSION));
if (expressionElement != null) {
query.setExpression(ExpressionHelper.fromOM(expressionElement));
}
OMElement outputOmElement = queryElement.getFirstChildWithName(new QName(CEPConstants.CEP_CONF_NAMESPACE,
CEPConstants.CEP_CONF_ELE_OUTPUT));
if (expressionElement != null) {
query.setOutput(OutputHelper.fromOM(outputOmElement));
}
return query;
}
}