/
Schemas.java
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/
Schemas.java
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/*
* Copyright 2016-2020 Crown Copyright
*
* 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.
*/
package uk.gov.gchq.gaffer.doc.dev.walkthrough;
import uk.gov.gchq.gaffer.commonutil.CommonConstants;
import uk.gov.gchq.gaffer.commonutil.StreamUtil;
import uk.gov.gchq.gaffer.graph.Graph;
import uk.gov.gchq.gaffer.operation.OperationException;
import uk.gov.gchq.gaffer.store.schema.Schema;
import java.io.UnsupportedEncodingException;
public class Schemas extends DevWalkthrough {
public Schemas() {
super("Schemas", "SchemaExample");
}
@Override
public Schema run() throws OperationException {
/// [graph] create a graph using our schema and store properties
// ---------------------------------------------------------
final Graph graph = new Graph.Builder()
.config(getDefaultGraphConfig())
.addSchemas(StreamUtil.openStreams(getClass(), schemaPath))
.storeProperties(getDefaultStoreProperties())
.build();
// ---------------------------------------------------------
final Schema schema = graph.getSchema();
try {
print("SCHEMA", new String(schema.toJson(true), CommonConstants.UTF_8));
} catch (final UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
return schema;
}
public static void main(final String[] args) throws OperationException {
final Schemas walkthrough = new Schemas();
walkthrough.run();
}
}