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.HashMap;
021import java.util.Map;
022
023import org.apache.camel.CamelContext;
024import org.apache.camel.component.extension.MetaDataExtension;
025
026public final class MetaDataBuilder {
027    private final CamelContext camelContext;
028    private Object payload;
029    private Map<String, Object> attributes;
030
031    private MetaDataBuilder(CamelContext camelContext) {
032        this.camelContext = camelContext;
033    }
034
035    public MetaDataBuilder withPayload(Object payload) {
036        this.payload = payload;
037        return this;
038    }
039
040    public MetaDataBuilder withAttribute(String name, Object value) {
041        if (this.attributes == null) {
042            this.attributes = new HashMap<>();
043        }
044
045        this.attributes.put(name, value);
046        return this;
047    }
048
049    public MetaDataExtension.MetaData build() {
050        return new DefaultMetaData(
051            camelContext,
052            attributes == null ? Collections.emptyMap() : attributes,
053            payload
054        );
055    }
056
057    // *****************************
058    //
059    // *****************************
060
061    public static MetaDataBuilder on(CamelContext camelContext) {
062        return new MetaDataBuilder(camelContext);
063    }
064}