#6 - Add samples for Spring Data Solr.

Added sample using deep pagination with cursor and one for managed schema support. Added JUnit rule checking that Solr is up and running.

Original pull request: #12.

solr/util/pom.xml

@@ -0,0 +1,20 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+
+	<parent>
+		<groupId>org.springframework.data.examples</groupId>
+		<artifactId>spring-data-solr-examples</artifactId>
+		<version>1.0.0.BUILD-SNAPSHOT</version>
+	</parent>
+
+	<artifactId>spring-data-solr-example-utils</artifactId>
+	<name>Spring Data Solr - Example utilities</name>
+
+	<dependencies>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+		</dependency>
+	</dependencies>
+</project>

solr/util/src/main/java/example/springdata/solr/test/util/RequiresSolrServer.java

@@ -0,0 +1,76 @@
+/*
+ * Copyright 2014 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.solr.test.util;
+
+import java.io.IOException;
+
+import org.apache.http.client.methods.CloseableHttpResponse;
+import org.apache.http.client.methods.HttpGet;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.hamcrest.core.Is;
+import org.junit.Assume;
+import org.junit.internal.AssumptionViolatedException;
+import org.junit.rules.TestRule;
+import org.junit.runner.Description;
+import org.junit.runners.model.Statement;
+
+/**
+ * {@link TestRule} implementation using {@link CloseableHttpClient} to check if Solr is running by sending
+ * {@literal GET} request to {@literal /admin/ping}.
+ * 
+ * @author Christoph Strobl
+ */
+public class RequiresSolrServer implements TestRule {
+
+	private static final String PING_PATH = "/admin/ping";
+
+	private final String baseUrl;
+
+	private RequiresSolrServer(String baseUrl) {
+		this.baseUrl = baseUrl;
+	}
+
+	public static RequiresSolrServer onLocalhost() {
+		return new RequiresSolrServer("http://localhost:8983/solr");
+	}
+
+	@Override
+	public Statement apply(Statement base, Description description) {
+		return new Statement() {
+
+			@Override
+			public void evaluate() throws Throwable {
+
+				checkServerRunning();
+				base.evaluate();
+			}
+		};
+	}
+
+	private void checkServerRunning() {
+
+		try (CloseableHttpClient client = HttpClientBuilder.create().build()) {
+			CloseableHttpResponse response = client.execute(new HttpGet(baseUrl + PING_PATH));
+			if (response != null && response.getStatusLine() != null) {
+				Assume.assumeThat(response.getStatusLine().getStatusCode(), Is.is(200));
+			}
+		} catch (IOException e) {
+			throw new AssumptionViolatedException("SolrServer does not seem to be running", e);
+		}
+	}
+
+}