#28 - Added example for Spring Data Elasticsearch.

Added basic example to show repository and ElasticsearchOperations usage.

elasticsearch/example/src/main/java/example/springdata/elasticsearch/ApplicationConfiguration.java

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+/*
+ * Copyright 2014-2015 the original author or authors.
+ *
+ * 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 example.springdata.elasticsearch;
+
+import java.util.Arrays;
+
+import javax.annotation.PostConstruct;
+import javax.annotation.PreDestroy;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.elasticsearch.core.ElasticsearchOperations;
+
+/**
+ * @author Artur Konczak
+ * @author Oliver Gierke
+ */
+@Configuration
+@EnableAutoConfiguration
+class ApplicationConfiguration {
+
+	@Autowired ElasticsearchOperations operations;
+	@Autowired ConferenceRepository repository;
+
+	@PreDestroy
+	public void deleteIndex() {
+		operations.deleteIndex(Conference.class);
+	}
+
+	@PostConstruct
+	public void insertDataSample() {
+
+		// Remove all documents
+		repository.deleteAll();
+		operations.refresh(Conference.class, true);
+
+		// Save data sample
+		repository.save(Conference.builder().date("2014-11-06").name("Spring eXchange 2014 - London")
+				.keywords(Arrays.asList("java", "spring")).location("51.500152, -0.126236").build());
+		repository.save(Conference.builder().date("2014-12-07").name("Scala eXchange 2014 - London")
+				.keywords(Arrays.asList("scala", "play", "java")).location("51.500152, -0.126236").build());
+		repository.save(Conference.builder().date("2014-11-20").name("Elasticsearch 2014 - Berlin")
+				.keywords(Arrays.asList("java", "elasticsearch", "kibana")).location("52.5234051, 13.4113999").build());
+		repository.save(Conference.builder().date("2014-11-12").name("AWS London 2014")
+				.keywords(Arrays.asList("cloud", "aws")).location("51.500152, -0.126236").build());
+		repository.save(Conference.builder().date("2014-10-04").name("JDD14 - Cracow")
+				.keywords(Arrays.asList("java", "spring")).location("50.0646501, 19.9449799").build());
+	}
+}

elasticsearch/example/src/main/java/example/springdata/elasticsearch/Conference.java

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+/*
+ * Copyright 2014-2015 the original author or authors.
+ *
+ * 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 example.springdata.elasticsearch;
+
+import static org.springframework.data.elasticsearch.annotations.FieldType.*;
+
+import java.util.List;
+
+import lombok.Data;
+import lombok.experimental.Builder;
+
+import org.springframework.data.annotation.Id;
+import org.springframework.data.elasticsearch.annotations.Document;
+import org.springframework.data.elasticsearch.annotations.Field;
+import org.springframework.data.elasticsearch.annotations.GeoPointField;
+
+/**
+ * @author Artur Konczak
+ * @author Oliver Gierke
+ */
+@Data
+@Builder
+@Document(indexName = "conference-index", shards = 1, replicas = 0, indexStoreType = "memory", refreshInterval = "-1")
+public class Conference {
+
+	private @Id String id;
+	private String name;
+	private @Field(type = Date) String date;
+	private @GeoPointField String location;
+	private List<String> keywords;
+
+	// do not remove it
+	public Conference() {}
+
+	// do not remove it - work around for lombok generated constructor for all params
+	public Conference(String id, String name, String date, String location, List<String> keywords) {
+
+		this.id = id;
+		this.name = name;
+		this.date = date;
+		this.location = location;
+		this.keywords = keywords;
+	}
+}

elasticsearch/example/src/main/java/example/springdata/elasticsearch/ConferenceRepository.java

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+/*
+ * Copyright 2014-2015 the original author or authors.
+ *
+ * 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 example.springdata.elasticsearch;
+
+import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;
+
+/**
+ * @author Artur Konczak
+ * @author Oliver Gierke
+ */
+interface ConferenceRepository extends ElasticsearchRepository<Conference, String> {}

elasticsearch/example/src/main/resources/application.properties

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+# Uncomment both entries to connect with local elasticsearch cluster
+#spring.data.elasticsearch.clusterName=elasticsearch
+#spring.data.elasticsearch.clusterNodes=localhost:9300