| /* |
| * 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.solr.client.solrj.io.eval; |
| |
| import java.io.IOException; |
| |
| import java.util.Enumeration; |
| import java.util.Locale; |
| import java.util.concurrent.ConcurrentMap; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| import org.apache.solr.client.solrj.io.stream.expr.StreamExpression; |
| import org.apache.solr.client.solrj.io.stream.expr.StreamFactory; |
| |
| public class ListCacheEvaluator extends RecursiveObjectEvaluator implements ManyValueWorker { |
| protected static final long serialVersionUID = 1L; |
| |
| public ListCacheEvaluator(StreamExpression expression, StreamFactory factory) throws IOException{ |
| super(expression, factory); |
| |
| if(containedEvaluators.size() > 1){ |
| throw new IOException(String.format(Locale.ROOT,"Invalid expression %s - expecting at most 1 values but found %d",expression,containedEvaluators.size())); |
| } |
| } |
| |
| @Override |
| @SuppressWarnings({"unchecked"}) |
| public Object doWork(Object... values) throws IOException { |
| @SuppressWarnings({"rawtypes"}) |
| ConcurrentMap objectCache = this.streamContext.getObjectCache(); |
| @SuppressWarnings({"rawtypes"}) |
| List list = new ArrayList(); |
| |
| if(values.length == 0) { |
| @SuppressWarnings({"rawtypes"}) |
| ConcurrentHashMap m = (ConcurrentHashMap)objectCache; |
| @SuppressWarnings({"rawtypes"}) |
| Enumeration en = m.keys(); |
| while(en.hasMoreElements()) { |
| list.add(en.nextElement()); |
| } |
| return list; |
| } else if(values.length == 1) { |
| String space = (String)values[0]; |
| space = space.replace("\"", ""); |
| @SuppressWarnings({"rawtypes"}) |
| ConcurrentMap spaceCache = (ConcurrentMap)objectCache.get(space); |
| if(spaceCache != null) { |
| @SuppressWarnings({"rawtypes"}) |
| ConcurrentHashMap spaceMap = (ConcurrentHashMap)objectCache.get(space); |
| @SuppressWarnings({"rawtypes"}) |
| Enumeration en = spaceMap.keys(); |
| while(en.hasMoreElements()) { |
| list.add(en.nextElement()); |
| } |
| return list; |
| } else { |
| return list; |
| } |
| } else { |
| throw new IOException("The listCache function requires two parameters: workspace and key"); |
| } |
| } |
| } |