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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.restcore.search;
import groovy.lang.Binding;
import groovy.lang.Script;
import org.apache.tinkerpop.gremlin.process.traversal.dsl.graph.GraphTraversal;
import org.apache.tinkerpop.gremlin.structure.Vertex;
import org.onap.aai.config.SpringContextAware;
import org.onap.aai.introspection.Loader;
import org.onap.aai.introspection.LoaderFactory;
import org.onap.aai.introspection.ModelType;
import org.onap.aai.query.builder.QueryBuilder;
import org.onap.aai.serialization.engines.QueryStyle;
import org.onap.aai.serialization.engines.TransactionalGraphEngine;
import org.onap.aai.setup.SchemaVersion;
import org.onap.aai.setup.SchemaVersions;
import java.util.Map;
/**
* Creates and returns a groovy shell with the
* configuration to statically import graph classes
*
*/
public class GroovyQueryBuilderSingleton extends AAIAbstractGroovyShell {
private GroovyQueryBuilderSingleton() {
super();
}
private static class Helper {
private static final GroovyQueryBuilderSingleton INSTANCE = new GroovyQueryBuilderSingleton();
}
public static GroovyQueryBuilderSingleton getInstance() {
return Helper.INSTANCE;
}
/**
* {@inheritDoc}
*/
@Override
public String executeTraversal (TransactionalGraphEngine engine, String traversal, Map<String, Object> params) {
QueryBuilder<Vertex> builder = engine.getQueryBuilder(QueryStyle.GREMLIN_TRAVERSAL);
SchemaVersions schemaVersions = SpringContextAware.getBean(SchemaVersions.class);
Loader loader = SpringContextAware.getBean(LoaderFactory.class).createLoaderForVersion(ModelType.MOXY, schemaVersions.getDefaultVersion());
builder.changeLoader(loader);
Binding binding = new Binding(params);
binding.setVariable("builder", builder);
Script script = shell.parse(traversal);
script.setBinding(binding);
script.run();
return builder.getQuery();
}
/**
* @throws UnsupportedOperationException
*/
@Override
public GraphTraversal<?, ?> executeTraversal(String traversal, Map<String, Object> params) {
throw new UnsupportedOperationException();
}
}
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