org.apache.cxf.jaxrs.ext.search.QueryContextProvider Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.jaxrs.ext.search;
import javax.ws.rs.ext.Provider;
import org.apache.cxf.jaxrs.ext.ContextProvider;
import org.apache.cxf.message.Message;
@Provider
public class QueryContextProvider implements ContextProvider {
public QueryContext createContext(Message message) {
return new QueryContextImpl(message);
}
private static class QueryContextImpl implements QueryContext {
private SearchContext searchContext;
private Message message;
public QueryContextImpl(Message message) {
this.searchContext = new SearchContextImpl(message);
this.message = message;
}
public String getConvertedExpression(String originalExpression) {
return getConvertedExpression(originalExpression, SearchBean.class);
}
public String getConvertedExpression(String originalExpression, Class beanClass) {
return getConvertedExpression(originalExpression, beanClass, String.class);
}
public E getConvertedExpression(String originalExpression,
Class beanClass,
Class queryClass) {
SearchConditionVisitor visitor = getVisitor();
if (visitor == null) {
return null;
}
SearchCondition cond = searchContext.getCondition(originalExpression, beanClass);
if (cond == null) {
return null;
}
cond.accept(visitor);
return queryClass.cast(visitor.getQuery());
}
@SuppressWarnings("unchecked")
private SearchConditionVisitor getVisitor() {
Object visitor = message.getContextualProperty(SearchUtils.SEARCH_VISITOR_PROPERTY);
if (visitor == null) {
return null;
} else {
//TODO: consider introducing SearchConditionVisitor.getBeanClass &&
// SearchConditionVisitor.getQueryClass to avoid such casts
return (SearchConditionVisitor)visitor;
}
}
}
}