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 */
017 package org.apache.camel.model;
018
019 import javax.xml.bind.annotation.XmlAccessType;
020 import javax.xml.bind.annotation.XmlAccessorType;
021 import javax.xml.bind.annotation.XmlAttribute;
022 import javax.xml.bind.annotation.XmlRootElement;
023 import javax.xml.bind.annotation.XmlTransient;
024
025 import org.apache.camel.Endpoint;
026 import org.apache.camel.spi.Required;
027 import org.apache.camel.spi.RouteContext;
028 import org.apache.camel.util.ObjectHelper;
029
030 /**
031 * Represents an XML <from/> element
032 *
033 * @version
034 */
035 @XmlRootElement(name = "from")
036 @XmlAccessorType(XmlAccessType.FIELD)
037 public class FromDefinition extends OptionalIdentifiedDefinition<FromDefinition> {
038 @XmlAttribute
039 private String uri;
040 @XmlAttribute
041 private String ref;
042 @XmlTransient
043 private Endpoint endpoint;
044
045 public FromDefinition() {
046 }
047
048 public FromDefinition(String uri) {
049 setUri(uri);
050 }
051
052 public FromDefinition(Endpoint endpoint) {
053 this.endpoint = endpoint;
054 }
055
056 @Override
057 public String toString() {
058 return "From[" + getLabel() + "]";
059 }
060
061 @Override
062 public String getShortName() {
063 return "from";
064 }
065
066 public String getLabel() {
067 return description(getUri(), getRef(), getEndpoint());
068 }
069
070 public Endpoint resolveEndpoint(RouteContext context) {
071 if (endpoint == null) {
072 return context.resolveEndpoint(getUri(), getRef());
073 } else {
074 return endpoint;
075 }
076 }
077
078 // Properties
079 // -----------------------------------------------------------------------
080
081 public String getUri() {
082 if (uri != null) {
083 return uri;
084 } else if (endpoint != null) {
085 return endpoint.getEndpointUri();
086 } else {
087 return null;
088 }
089 }
090
091 /**
092 * Sets the URI of the endpoint to use
093 *
094 * @param uri the endpoint URI to use
095 */
096 @Required
097 public void setUri(String uri) {
098 clear();
099 this.uri = uri;
100 }
101
102 public String getRef() {
103 return ref;
104 }
105
106 /**
107 * Sets the name of the endpoint within the registry (such as the Spring
108 * ApplicationContext or JNDI) to use
109 *
110 * @param ref the reference name to use
111 */
112 public void setRef(String ref) {
113 clear();
114 this.ref = ref;
115 }
116
117 /**
118 * Gets tne endpoint if an {@link Endpoint} instance was set.
119 * <p/>
120 * This implementation may return <tt>null</tt> which means you need to use
121 * {@link #getRef()} or {@link #getUri()} to get information about the endpoint.
122 *
123 * @return the endpoint instance, or <tt>null</tt>
124 */
125 public Endpoint getEndpoint() {
126 return endpoint;
127 }
128
129 public void setEndpoint(Endpoint endpoint) {
130 this.endpoint = endpoint;
131 }
132
133 /**
134 * Returns the endpoint URI or the name of the reference to it
135 */
136 public Object getUriOrRef() {
137 if (ObjectHelper.isNotEmpty(uri)) {
138 return uri;
139 } else if (endpoint != null) {
140 return endpoint.getEndpointUri();
141 }
142 return ref;
143 }
144
145 // Implementation methods
146 // -----------------------------------------------------------------------
147 protected static String description(String uri, String ref, Endpoint endpoint) {
148 if (ref != null) {
149 return "ref:" + ref;
150 } else if (endpoint != null) {
151 return endpoint.getEndpointUri();
152 } else if (uri != null) {
153 return uri;
154 } else {
155 return "no uri or ref supplied!";
156 }
157 }
158
159 protected void clear() {
160 this.endpoint = null;
161 this.ref = null;
162 this.uri = null;
163 }
164
165 }