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OrientGraphConfiguration.java
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OrientGraphConfiguration.java
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/*
*
* * Copyright 2010-2016 OrientDB LTD (http://orientdb.com)
* *
* * Licensed 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.
* *
* * For more information: http://orientdb.com
*
*/
package com.tinkerpop.rexster;
import com.tinkerpop.blueprints.Graph;
import com.tinkerpop.blueprints.impls.orient.OrientGraphFactory;
import com.tinkerpop.rexster.config.GraphConfiguration;
import com.tinkerpop.rexster.config.GraphConfigurationContext;
import com.tinkerpop.rexster.config.GraphConfigurationException;
import org.apache.commons.configuration.HierarchicalConfiguration;
import org.apache.commons.configuration.SubnodeConfiguration;
/**
* Configuration class for Rexster (http://rexster.tinkerpop.com). Example usage within rexster.xml:
* <br>
*
* <pre>{@code
* <graph>
* <graph-enabled>false</graph-enabled>
* <graph-name>orientdbsample</graph-name>
* <graph-type>com.tinkerpop.rexster.OrientGraphConfiguration</graph-type>
* <graph-location>plocal:/tmp/orientdb-graph</graph-location>
* <properties>
* <username>admin</username>
* <password>admin</password>
* </properties>
* <extensions>
* <allows>
* <allow>tp:gremlin</allow>
* </allows>
* </extensions>
* </graph>
* }</pre>
*
* @author Stephen Mallette (http://stephen.genoprime.com)
*/
public class OrientGraphConfiguration implements GraphConfiguration {
public Graph configureGraphInstance(final GraphConfigurationContext context)
throws GraphConfigurationException {
final String graphFile = context.getProperties().getString(Tokens.REXSTER_GRAPH_LOCATION);
if (graphFile == null || graphFile.length() == 0) {
throw new GraphConfigurationException(
"Check graph configuration. Missing or empty configuration element: "
+ Tokens.REXSTER_GRAPH_LOCATION);
}
// get the <properties> section of the xml configuration
final HierarchicalConfiguration graphSectionConfig =
(HierarchicalConfiguration) context.getProperties();
SubnodeConfiguration orientDbSpecificConfiguration;
try {
orientDbSpecificConfiguration =
graphSectionConfig.configurationAt(Tokens.REXSTER_GRAPH_PROPERTIES);
} catch (IllegalArgumentException iae) {
throw new GraphConfigurationException(
"Check graph configuration. Missing or empty configuration element: "
+ Tokens.REXSTER_GRAPH_PROPERTIES,
iae);
}
try {
final String username = orientDbSpecificConfiguration.getString("username", "");
final String password = orientDbSpecificConfiguration.getString("password", "");
// calling the open method opens the connection to graphdb. looks like the
// implementation of shutdown will call the orientdb close method.
return OrientGraphFactory.getTxGraphImplFactory().getGraph(graphFile, username, password);
} catch (Exception ex) {
throw new GraphConfigurationException(ex);
}
}
}