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FromDefinition.java
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FromDefinition.java
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/**
* 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.camel.model;
import javax.xml.bind.annotation.XmlAccessType;
import javax.xml.bind.annotation.XmlAccessorType;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlRootElement;
import javax.xml.bind.annotation.XmlTransient;
import org.apache.camel.Endpoint;
import org.apache.camel.spi.Metadata;
import org.apache.camel.spi.RouteContext;
/**
* Act as a message source as input to a route
*/
@Metadata(label = "eip,endpoint,routing")
@XmlRootElement(name = "from")
@XmlAccessorType(XmlAccessType.FIELD)
public class FromDefinition extends OptionalIdentifiedDefinition<FromDefinition> implements EndpointRequiredDefinition {
@XmlAttribute @Metadata(required = true)
private String uri;
@XmlTransient
private Endpoint endpoint;
public FromDefinition() {
}
public FromDefinition(String uri) {
setUri(uri);
}
public FromDefinition(Endpoint endpoint) {
setEndpoint(endpoint);
}
@Override
public String toString() {
return "From[" + getLabel() + "]";
}
@Override
public String getShortName() {
return "from";
}
@Override
public String getLabel() {
return description(getUri(), getEndpoint());
}
public Endpoint resolveEndpoint(RouteContext context) {
if (endpoint == null) {
return context.resolveEndpoint(getUri());
} else {
return endpoint;
}
}
@Override
public String getEndpointUri() {
return getUri();
}
// Properties
// -----------------------------------------------------------------------
public String getUri() {
if (uri != null) {
return uri;
} else if (endpoint != null) {
return endpoint.getEndpointUri();
} else {
return null;
}
}
/**
* Sets the URI of the endpoint to use
*
* @param uri the endpoint URI to use
*/
public void setUri(String uri) {
clear();
this.uri = uri;
}
/**
* Gets tne endpoint if an {@link Endpoint} instance was set.
* <p/>
* This implementation may return <tt>null</tt> which means you need to use
* {@link #getUri()} to get information about the endpoint.
*
* @return the endpoint instance, or <tt>null</tt>
*/
public Endpoint getEndpoint() {
return endpoint;
}
public void setEndpoint(Endpoint endpoint) {
this.endpoint = endpoint;
this.uri = null;
if (endpoint != null) {
this.uri = endpoint.getEndpointUri();
}
}
// Implementation methods
// -----------------------------------------------------------------------
protected static String description(String uri, Endpoint endpoint) {
if (endpoint != null) {
return endpoint.getEndpointUri();
} else if (uri != null) {
return uri;
} else {
return "no uri or ref supplied!";
}
}
protected void clear() {
this.endpoint = null;
this.uri = null;
}
}