001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.camel.component.extension.metadata;
018
019import java.util.Collections;
020import java.util.Map;
021
022import org.apache.camel.CamelContext;
023import org.apache.camel.component.extension.MetaDataExtension;
024
025public class DefaultMetaData implements MetaDataExtension.MetaData {
026    private final Map<String, Object> attributes;
027    private final Object payload;
028    private CamelContext camelContext;
029    
030    public DefaultMetaData(CamelContext camelContext, Map<String, Object> attributes, Object payload) {
031        this.camelContext = camelContext;
032        this.attributes = attributes;
033        this.payload = payload;
034    }
035
036    @Override
037    public Object getAttribute(String name) {
038        return attributes.get(name);
039    }
040
041    @Override
042    public Map<String, Object> getAttributes() {
043        return Collections.unmodifiableMap(attributes);
044    }
045
046    @Override
047    public <T> T getAttribute(String name, Class<T> type) {
048        Object value = attributes.get(name);
049        if (camelContext != null) {
050            return camelContext.getTypeConverter().convertTo(type, value);
051        }
052
053        throw new IllegalStateException("Unable to perform conversion as CamelContext is not set");
054    }
055
056    @Override
057    public Object getPayload() {
058        return payload;
059    }
060
061    @Override
062    public <T> T getPayload(Class<T> type) {
063        if (camelContext != null) {
064            return camelContext.getTypeConverter().convertTo(type, payload);
065        }
066
067        throw new IllegalStateException("Unable to perform conversion as CamelContext is not set");
068    }
069}