org.apache.camel.component.cassandra.CassandraComponent Maven / Gradle / Ivy
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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.component.cassandra;
import java.util.Map;
import org.apache.camel.CamelContext;
import org.apache.camel.Endpoint;
import org.apache.camel.spi.annotations.Component;
import org.apache.camel.support.CamelContextHelper;
import org.apache.camel.support.DefaultComponent;
import org.apache.camel.util.StringHelper;
/**
* Represents the component that manages {@link CassandraEndpoint}. This component is based on Datastax Java Driver for
* Cassandra.
*
* URI examples:
*
* - cql:localhost/keyspace
* - cql:host1,host2/keyspace
* - cql:host1:host2:9042/keyspace
* - cql:host1:host2
* - cql:bean:sessionRef
*
*/
@Component("cql")
public class CassandraComponent extends DefaultComponent {
public CassandraComponent() {
this(null);
}
public CassandraComponent(CamelContext context) {
super(context);
}
@Override
protected Endpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception {
String beanRef = null;
String hosts = null;
String port = null;
String keyspace = null;
int pos = remaining.lastIndexOf('/');
if (pos > 0) {
keyspace = remaining.substring(pos + 1);
remaining = remaining.substring(0, pos);
}
// if its a bean reference to either a cluster/session then lookup
if (remaining.startsWith("bean:")) {
beanRef = remaining.substring(5);
} else {
// hosts and port (port is optional)
if (remaining.contains(":")) {
port = StringHelper.after(remaining, ":");
hosts = StringHelper.before(remaining, ":");
} else {
hosts = remaining;
}
}
CassandraEndpoint endpoint = new CassandraEndpoint(uri, this);
endpoint.setBean(beanRef);
endpoint.setHosts(hosts);
if (port != null) {
int num = CamelContextHelper.parseInteger(getCamelContext(), port);
endpoint.setPort(num);
}
endpoint.setKeyspace(keyspace);
// special in some use-cases
Object strategy = parameters.get("resultSetConversionStrategy");
if (strategy != null) {
String text = CamelContextHelper.parseText(getCamelContext(), strategy.toString());
if (text.equalsIgnoreCase("ALL") || text.equalsIgnoreCase("ONE") || text.startsWith("LIMIT_")) {
ResultSetConversionStrategy rs = ResultSetConversionStrategies.fromName(text);
endpoint.setResultSetConversionStrategy(rs);
parameters.remove("resultSetConversionStrategy");
}
}
setProperties(endpoint, parameters);
return endpoint;
}
}
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