| /* |
| * 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.tinkerpop.gremlin.hadoop.structure; |
| |
| import org.apache.commons.configuration.AbstractConfiguration; |
| import org.apache.commons.configuration.Configuration; |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.mapreduce.InputFormat; |
| import org.apache.hadoop.mapreduce.OutputFormat; |
| import org.apache.tinkerpop.gremlin.hadoop.Constants; |
| import org.apache.tinkerpop.gremlin.hadoop.structure.io.VertexWritable; |
| import org.apache.tinkerpop.gremlin.util.iterator.IteratorUtils; |
| import org.javatuples.Pair; |
| |
| import java.io.Serializable; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| /** |
| * @author Marko A. Rodriguez (http://markorodriguez.com) |
| */ |
| public final class HadoopConfiguration extends AbstractConfiguration implements Serializable, Iterable { |
| |
| private final Map<String, Object> properties = new HashMap<>(); |
| |
| public HadoopConfiguration() { |
| super(); |
| super.setDelimiterParsingDisabled(true); |
| } |
| |
| public HadoopConfiguration(final Configuration configuration) { |
| this(); |
| this.copy(configuration); |
| } |
| |
| @Override |
| protected void addPropertyDirect(final String key, final Object value) { |
| this.properties.put(key, value); |
| } |
| |
| @Override |
| protected void clearPropertyDirect(final String key) { |
| this.properties.remove(key); |
| } |
| |
| @Override |
| public boolean isEmpty() { |
| return this.properties.isEmpty(); |
| } |
| |
| @Override |
| public boolean containsKey(final String key) { |
| return this.properties.containsKey(key); |
| } |
| |
| @Override |
| public Object getProperty(final String key) { |
| return this.properties.get(key); |
| } |
| |
| @Override |
| public Iterator<String> getKeys() { |
| return this.properties.keySet().iterator(); |
| } |
| |
| /////// |
| |
| public <A> Class<A> getGraphReader() { |
| try { |
| return (Class) Class.forName(this.getString(Constants.GREMLIN_HADOOP_GRAPH_READER)); |
| } catch (final ClassNotFoundException e) { |
| throw new RuntimeException(e.getMessage(), e); |
| } |
| } |
| |
| public <A> Class<A> getGraphWriter() { |
| try { |
| return (Class) Class.forName(this.getString(Constants.GREMLIN_HADOOP_GRAPH_WRITER)); |
| } catch (final ClassNotFoundException e) { |
| throw new RuntimeException(e.getMessage(), e); |
| } |
| } |
| |
| /** |
| * @deprecated As of release 3.2.0, replaced by {@link HadoopConfiguration#getGraphReader()}. |
| */ |
| @Deprecated |
| public Class<InputFormat<NullWritable, VertexWritable>> getGraphInputFormat() { |
| try { |
| return (Class) Class.forName(this.getString(Constants.GREMLIN_HADOOP_GRAPH_READER)); |
| } catch (final ClassNotFoundException e) { |
| throw new RuntimeException(e.getMessage(), e); |
| } |
| } |
| |
| /** |
| * @deprecated As of release 3.2.0, replaced by {@link HadoopConfiguration#getGraphWriter()}. |
| */ |
| @Deprecated |
| public Class<OutputFormat<NullWritable, VertexWritable>> getGraphOutputFormat() { |
| try { |
| return (Class) Class.forName(this.getString(Constants.GREMLIN_HADOOP_GRAPH_WRITER)); |
| } catch (final ClassNotFoundException e) { |
| throw new RuntimeException(e.getMessage(), e); |
| } |
| } |
| |
| public String getInputLocation() { |
| return this.getString(Constants.GREMLIN_HADOOP_INPUT_LOCATION); |
| } |
| |
| public void setInputLocation(final String inputLocation) { |
| this.setProperty(Constants.GREMLIN_HADOOP_INPUT_LOCATION, inputLocation); |
| } |
| |
| public String getOutputLocation() { |
| return this.getString(Constants.GREMLIN_HADOOP_OUTPUT_LOCATION); |
| } |
| |
| public void setOutputLocation(final String outputLocation) { |
| this.setProperty(Constants.GREMLIN_HADOOP_OUTPUT_LOCATION, outputLocation); |
| } |
| |
| @Override |
| public Iterator iterator() { |
| return IteratorUtils.map(this.getKeys(), k -> new Pair<>(k, this.getProperty(k))); |
| } |
| } |