| /* |
| * 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.tamaya.spisupport; |
| |
| import org.apache.tamaya.spi.ConfigurationContext; |
| import org.apache.tamaya.spi.PropertyFilter; |
| import org.apache.tamaya.spi.PropertySource; |
| import org.apache.tamaya.spi.PropertyValue; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| |
| /** |
| * Implementation of the Configuration API. This class uses the current {@link ConfigurationContext} to evaluate the |
| * chain of {@link PropertySource} and {@link PropertyFilter} |
| * instances to evaluate the current Configuration. |
| */ |
| public class DefaultConfigValueEvaluator implements ConfigValueEvaluator{ |
| |
| @Override |
| public PropertyValue evaluateRawValue(String key, ConfigurationContext context) { |
| PropertyValue unfilteredValue = null; |
| for (PropertySource propertySource : context.getPropertySources()) { |
| PropertyValue val = propertySource.get(key); |
| if(val!=null){ |
| unfilteredValue = val; |
| } |
| } |
| if(unfilteredValue==null || |
| (unfilteredValue.getValueType()== PropertyValue.ValueType.VALUE && unfilteredValue.getValue()==null)){ |
| return null; |
| } |
| return unfilteredValue; |
| } |
| |
| @Override |
| public Map<String, PropertyValue> evaluateRawValues(ConfigurationContext context) { |
| Map<String, PropertyValue> result = new HashMap<>(); |
| for (PropertySource propertySource : context.getPropertySources()) { |
| for (PropertyValue val: propertySource.getProperties().values()) { |
| if (val!=null && (val.getValueType() != PropertyValue.ValueType.VALUE || val.getValue() != null)){ |
| result.put(val.getKey(), val); |
| } |
| } |
| } |
| return result; |
| } |
| |
| @Override |
| public String toString() { |
| return "DefaultConfigEvaluator{}"; |
| } |
| } |