| /* |
| * 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.sling.pipes.internal.slingquery; |
| |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.pipes.PipeBindings; |
| import org.apache.sling.pipes.Plumber; |
| import org.apache.sling.query.SlingQuery; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * deals with sling query pipe code that takes an expression as input |
| */ |
| public abstract class AbstractExpressionSlingQueryPipe extends AbstractSlingQueryPipe { |
| Logger logger = LoggerFactory.getLogger(AbstractExpressionSlingQueryPipe.class); |
| public AbstractExpressionSlingQueryPipe(Plumber plumber, Resource resource, PipeBindings upperBindings) { |
| super(plumber, resource, upperBindings); |
| } |
| |
| /** |
| * generates a sling query object out of a resource and an expression |
| * @param resource input resource |
| * @param expression pipe's expression configuration |
| * @return SlingQuery object |
| */ |
| protected abstract SlingQuery getQuery(Resource resource, String expression); |
| |
| @Override |
| protected SlingQuery getQuery(Resource resource) { |
| try { |
| String expression = getExpr(); |
| logger.debug("executing sling query pipe with expression {}", expression); |
| return getQuery(resource, expression); |
| } catch (RuntimeException e){ |
| logger.error("please check pipe expressions", e); |
| } |
| return null; |
| } |
| } |