[Docs] Document Update API for Java High Level REST Client (#25536)
This commit adds documentation for Java High Level REST Client's Update API.
This commit is contained in:
Tanguy Leroux
GitHub
parent
7899dbef3b
commit
fefcae3d45
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@ -19,6 +19,8 @@
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package org.elasticsearch.client.documentation;
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import org.apache.http.HttpEntity;
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import org.apache.http.client.methods.HttpPost;
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import org.apache.http.entity.ContentType;
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import org.apache.http.nio.entity.NStringEntity;
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import org.elasticsearch.ElasticsearchException;
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@ -48,7 +50,10 @@ import org.elasticsearch.common.xcontent.XContentBuilder;
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import org.elasticsearch.common.xcontent.XContentFactory;
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import org.elasticsearch.common.xcontent.XContentType;
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import org.elasticsearch.index.VersionType;
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import org.elasticsearch.index.get.GetResult;
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import org.elasticsearch.rest.RestStatus;
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import org.elasticsearch.script.Script;
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import org.elasticsearch.script.ScriptType;
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import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
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import java.io.IOException;
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@ -57,6 +62,9 @@ import java.util.Date;
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import java.util.HashMap;
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import java.util.Map;
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import static java.util.Collections.emptyMap;
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import static java.util.Collections.singletonMap;
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/**
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* This class is used to generate the Java CRUD API documentation.
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* You need to wrap your code between two tags like:
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@ -80,8 +88,8 @@ public class CRUDDocumentationIT extends ESRestHighLevelClientTestCase {
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//tag::index-request-map
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Map<String, Object> jsonMap = new HashMap<>();
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jsonMap.put("user", "kimchy");
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jsonMap.put("postDate",new Date());
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jsonMap.put("message","trying out Elasticsearch");
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jsonMap.put("postDate", new Date());
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jsonMap.put("message", "trying out Elasticsearch");
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IndexRequest indexRequest = new IndexRequest("posts", "doc", "1")
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.source(jsonMap); // <1>
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//end::index-request-map
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@ -211,7 +219,6 @@ public class CRUDDocumentationIT extends ESRestHighLevelClientTestCase {
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}
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}
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// end::index-conflict
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}
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{
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// tag::index-optype
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@ -229,6 +236,263 @@ public class CRUDDocumentationIT extends ESRestHighLevelClientTestCase {
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}
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}
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public void testUpdate() throws IOException {
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RestHighLevelClient client = highLevelClient();
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{
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IndexRequest indexRequest = new IndexRequest("posts", "doc", "1").source("field", 0);
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IndexResponse indexResponse = client.index(indexRequest);
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assertSame(indexResponse.status(), RestStatus.CREATED);
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XContentType xContentType = XContentType.JSON;
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String script = XContentBuilder.builder(xContentType.xContent())
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.startObject()
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.startObject("script")
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.field("lang", "painless")
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.field("code", "ctx._source.field += params.count")
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.endObject()
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.endObject().string();
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HttpEntity body = new NStringEntity(script, ContentType.create(xContentType.mediaType()));
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Response response = client().performRequest(HttpPost.METHOD_NAME, "/_scripts/increment-field", emptyMap(), body);
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assertEquals(response.getStatusLine().getStatusCode(), RestStatus.OK.getStatus());
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}
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{
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//tag::update-request
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UpdateRequest request = new UpdateRequest(
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"posts", // <1>
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"doc", // <2>
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"1"); // <3>
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//end::update-request
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request.fetchSource(true);
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//tag::update-request-with-inline-script
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Map<String, Object> parameters = singletonMap("count", 4); // <1>
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Script inline = new Script(ScriptType.INLINE, "painless", "ctx._source.field += params.count", parameters); // <2>
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request.script(inline); // <3>
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//end::update-request-with-inline-script
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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assertEquals(4, updateResponse.getGetResult().getSource().get("field"));
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request = new UpdateRequest("posts", "doc", "1").fetchSource(true);
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//tag::update-request-with-stored-script
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Script stored =
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new Script(ScriptType.STORED, "painless", "increment-field", parameters); // <1>
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request.script(stored); // <2>
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//end::update-request-with-stored-script
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updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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assertEquals(8, updateResponse.getGetResult().getSource().get("field"));
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}
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{
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//tag::update-request-with-doc-as-map
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Map<String, Object> jsonMap = new HashMap<>();
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jsonMap.put("updated", new Date());
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jsonMap.put("reason", "daily update");
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UpdateRequest request = new UpdateRequest("posts", "doc", "1")
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.doc(jsonMap); // <1>
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//end::update-request-with-doc-as-map
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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}
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{
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//tag::update-request-with-doc-as-xcontent
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XContentBuilder builder = XContentFactory.jsonBuilder();
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builder.startObject();
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{
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builder.field("updated", new Date());
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builder.field("reason", "daily update");
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}
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builder.endObject();
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UpdateRequest request = new UpdateRequest("posts", "doc", "1")
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.doc(builder); // <1>
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//end::update-request-with-doc-as-xcontent
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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}
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{
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//tag::update-request-shortcut
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UpdateRequest request = new UpdateRequest("posts", "doc", "1")
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.doc("updated", new Date(),
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"reason", "daily update"); // <1>
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//end::update-request-shortcut
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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}
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{
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//tag::update-request-with-doc-as-string
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UpdateRequest request = new UpdateRequest("posts", "doc", "1");
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String jsonString = "{" +
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"\"updated\":\"2017-01-01\"," +
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"\"reason\":\"daily update\"" +
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"}";
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request.doc(jsonString, XContentType.JSON); // <1>
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//end::update-request-with-doc-as-string
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request.fetchSource(true);
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// tag::update-execute
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UpdateResponse updateResponse = client.update(request);
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// end::update-execute
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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// tag::update-response
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String index = updateResponse.getIndex();
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String type = updateResponse.getType();
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String id = updateResponse.getId();
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long version = updateResponse.getVersion();
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if (updateResponse.getResult() == DocWriteResponse.Result.CREATED) {
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// <1>
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} else if (updateResponse.getResult() == DocWriteResponse.Result.UPDATED) {
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// <2>
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} else if (updateResponse.getResult() == DocWriteResponse.Result.DELETED) {
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// <3>
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} else if (updateResponse.getResult() == DocWriteResponse.Result.NOOP) {
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// <4>
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}
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// end::update-response
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// tag::update-getresult
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GetResult result = updateResponse.getGetResult(); // <1>
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if (result.isExists()) {
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String sourceAsString = result.sourceAsString(); // <2>
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Map<String, Object> sourceAsMap = result.sourceAsMap(); // <3>
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byte[] sourceAsBytes = result.source(); // <4>
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} else {
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// <5>
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}
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// end::update-getresult
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assertNotNull(result);
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assertEquals(3, result.sourceAsMap().size());
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// tag::update-failure
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ReplicationResponse.ShardInfo shardInfo = updateResponse.getShardInfo();
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if (shardInfo.getTotal() != shardInfo.getSuccessful()) {
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// <1>
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}
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if (shardInfo.getFailed() > 0) {
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for (ReplicationResponse.ShardInfo.Failure failure : shardInfo.getFailures()) {
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String reason = failure.reason(); // <2>
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}
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}
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// end::update-failure
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// tag::update-execute-async
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client.updateAsync(request, new ActionListener<UpdateResponse>() {
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@Override
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public void onResponse(UpdateResponse updateResponse) {
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// <1>
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}
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@Override
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public void onFailure(Exception e) {
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// <2>
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}
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});
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// end::update-execute-async
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}
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{
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//tag::update-docnotfound
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UpdateRequest request = new UpdateRequest("posts", "type", "does_not_exist").doc("field", "value");
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try {
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UpdateResponse updateResponse = client.update(request);
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} catch (ElasticsearchException e) {
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if (e.status() == RestStatus.NOT_FOUND) {
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// <1>
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}
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}
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//end::update-docnotfound
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}
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{
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// tag::update-conflict
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UpdateRequest request = new UpdateRequest("posts", "doc", "1")
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.doc("field", "value")
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.version(1);
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try {
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UpdateResponse updateResponse = client.update(request);
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} catch(ElasticsearchException e) {
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if (e.status() == RestStatus.CONFLICT) {
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// <1>
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}
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}
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// end::update-conflict
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}
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{
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UpdateRequest request = new UpdateRequest("posts", "doc", "1").doc("reason", "no source");
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//tag::update-request-no-source
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request.fetchSource(true); // <1>
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//end::update-request-no-source
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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assertNotNull(updateResponse.getGetResult());
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assertEquals(3, updateResponse.getGetResult().sourceAsMap().size());
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}
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{
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UpdateRequest request = new UpdateRequest("posts", "doc", "1").doc("reason", "source includes");
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//tag::update-request-source-include
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String[] includes = new String[]{"updated", "r*"};
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String[] excludes = Strings.EMPTY_ARRAY;
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request.fetchSource(new FetchSourceContext(true, includes, excludes)); // <1>
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//end::update-request-source-include
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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Map<String, Object> sourceAsMap = updateResponse.getGetResult().sourceAsMap();
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assertEquals(2, sourceAsMap.size());
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assertEquals("source includes", sourceAsMap.get("reason"));
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assertTrue(sourceAsMap.containsKey("updated"));
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}
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{
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UpdateRequest request = new UpdateRequest("posts", "doc", "1").doc("reason", "source excludes");
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//tag::update-request-source-exclude
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String[] includes = Strings.EMPTY_ARRAY;
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String[] excludes = new String[]{"updated"};
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request.fetchSource(new FetchSourceContext(true, includes, excludes)); // <1>
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//end::update-request-source-exclude
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UpdateResponse updateResponse = client.update(request);
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assertEquals(updateResponse.getResult(), DocWriteResponse.Result.UPDATED);
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Map<String, Object> sourceAsMap = updateResponse.getGetResult().sourceAsMap();
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assertEquals(2, sourceAsMap.size());
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assertEquals("source excludes", sourceAsMap.get("reason"));
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assertTrue(sourceAsMap.containsKey("field"));
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}
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{
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UpdateRequest request = new UpdateRequest("posts", "doc", "id");
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// tag::update-request-routing
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request.routing("routing"); // <1>
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// end::update-request-routing
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// tag::update-request-parent
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request.parent("parent"); // <1>
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// end::update-request-parent
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// tag::update-request-timeout
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request.timeout(TimeValue.timeValueSeconds(1)); // <1>
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request.timeout("1s"); // <2>
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// end::update-request-timeout
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// tag::update-request-retry
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request.retryOnConflict(3); // <1>
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// end::update-request-retry
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// tag::update-request-refresh
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request.setRefreshPolicy(WriteRequest.RefreshPolicy.WAIT_UNTIL); // <1>
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request.setRefreshPolicy("wait_for"); // <2>
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// end::update-request-refresh
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// tag::update-request-version
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request.version(2); // <1>
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// end::update-request-version
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// tag::update-request-detect-noop
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request.detectNoop(false); // <1>
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// end::update-request-detect-noop
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// tag::update-request-upsert
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String jsonString = "{\"created\":\"2017-01-01\"}";
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request.upsert(jsonString, XContentType.JSON); // <1>
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// end::update-request-upsert
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// tag::update-request-scripted-upsert
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request.scriptedUpsert(true); // <1>
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// end::update-request-scripted-upsert
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// tag::update-request-doc-upsert
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request.docAsUpsert(true); // <1>
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// end::update-request-doc-upsert
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// tag::update-request-active-shards
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request.waitForActiveShards(2); // <1>
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request.waitForActiveShards(ActiveShardCount.ALL); // <2>
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// end::update-request-active-shards
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}
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}
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public void testDelete() throws IOException {
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RestHighLevelClient client = highLevelClient();
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@ -6,7 +6,7 @@ The Java High Level REST Client supports the following APIs:
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* <<java-rest-high-document-index>>
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* <<java-rest-high-document-get>>
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* <<java-rest-high-document-delete>>
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* Update API
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* <<java-rest-high-document-update>>
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.Multi-document APIs
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* <<java-rest-high-document-bulk>>
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@ -124,7 +124,7 @@ include-tagged::{doc-tests}/CRUDDocumentationIT.java[index-response]
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--------------------------------------------------
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<1> Handle (if needed) the case where the document was created for the first
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time
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<2> Handle (if needed) the case where the document was rewriten as it was
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<2> Handle (if needed) the case where the document was rewritten as it was
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already existing
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<3> Handle the situation where number of successful shards is less than
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total shards
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@ -1,4 +1,254 @@
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[[java-rest-high-document-update]]
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=== Update API
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See https://github.com/elastic/elasticsearch/pull/25536
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[[java-rest-high-document-update-request]]
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==== Update Request
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An `UpdateRequest` requires the following arguments:
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request]
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--------------------------------------------------
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<1> Index
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<2> Type
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<3> Document id
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The Update API allows to update an existing document by using a script
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or by passing a partial document.
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==== Updates with a script
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The script can be provided as an inline script:
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-with-inline-script]
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--------------------------------------------------
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<1> Script parameters provided as a `Map` of objects
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<2> Create an inline script using the `painless` language and the previous parameters
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<3> Sets the script to the update request
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Or as a stored script:
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-with-stored-script]
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--------------------------------------------------
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<1> Reference to a script stored under the name `increment-field` in the `painless` language
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<2> Sets the script in the update request
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==== Updates with a partial document
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When using updates with a partial document, the partial document will be merged with the
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existing document.
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The partial document can be provided in different ways:
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-with-doc-as-string]
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--------------------------------------------------
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<1> Partial document source provided as a `String` in JSON format
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-with-doc-as-map]
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--------------------------------------------------
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<1> Partial document source provided as a `Map` which gets automatically converted
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to JSON format
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-with-doc-as-xcontent]
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--------------------------------------------------
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<1> Partial document source provided as an `XContentBuilder` object, the Elasticsearch
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built-in helpers to generate JSON content
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-shortcut]
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--------------------------------------------------
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<1> Partial document source provided as `Object` key-pairs, which gets converted to
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JSON format
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==== Upserts
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If the document does not already exist, it is possible to define some content that
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will be inserted as a new document using the `upsert` method:
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-upsert]
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--------------------------------------------------
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<1> Upsert document source provided as a `String`
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Similarly to the partial document updates, the content of the `upsert` document
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can be defined using methods that accept `String`, `Map`, `XContentBuilder` or
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`Object` key-pairs.
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==== Optional arguments
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The following arguments can optionally be provided:
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-routing]
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--------------------------------------------------
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<1> Routing value
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-parent]
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--------------------------------------------------
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<1> Parent value
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["source","java",subs="attributes,callouts,macros"]
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--------------------------------------------------
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include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-timeout]
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--------------------------------------------------
|
||||
<1> Timeout to wait for primary shard to become available as a `TimeValue`
|
||||
<2> Timeout to wait for primary shard to become available as a `String`
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-refresh]
|
||||
--------------------------------------------------
|
||||
<1> Refresh policy as a `WriteRequest.RefreshPolicy` instance
|
||||
<2> Refresh policy as a `String`
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-retry]
|
||||
--------------------------------------------------
|
||||
<1> How many times to retry the update operation if the document to update has
|
||||
been changed by another operation between the get and indexing phases of the
|
||||
update operation
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-no-source]
|
||||
--------------------------------------------------
|
||||
<1> Enable source retrieval, disabled by default
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-source-include]
|
||||
--------------------------------------------------
|
||||
<1> Configure source inclusion for specific fields
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-source-exclude]
|
||||
--------------------------------------------------
|
||||
<1> Configure source exclusion for specific fields
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-version]
|
||||
--------------------------------------------------
|
||||
<1> Version
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-detect-noop]
|
||||
--------------------------------------------------
|
||||
<1> Disable the noop detection
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-scripted-upsert]
|
||||
--------------------------------------------------
|
||||
<1> Indicate that the script must run regardless of whether the document exists or not,
|
||||
ie the script takes care of creating the document if it does not already exist.
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-doc-upsert]
|
||||
--------------------------------------------------
|
||||
<1> Indicate that the partial document must be used as the upsert document if it
|
||||
does not exist yet.
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-request-active-shards]
|
||||
--------------------------------------------------
|
||||
<1> Sets the number of shard copies that must be active before proceeding with
|
||||
the update operation.
|
||||
<2> Number of shard copies provided as a `ActiveShardCount`: can be `ActiveShardCount.ALL`,
|
||||
`ActiveShardCount.ONE` or `ActiveShardCount.DEFAULT` (default)
|
||||
|
||||
[[java-rest-high-document-update-sync]]
|
||||
==== Synchronous Execution
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-execute]
|
||||
--------------------------------------------------
|
||||
|
||||
[[java-rest-high-document-update-async]]
|
||||
==== Asynchronous Execution
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-execute-async]
|
||||
--------------------------------------------------
|
||||
<1> Called when the execution is successfully completed. The response is
|
||||
provided as an argument.
|
||||
<2> Called in case of failure. The raised exception is provided as an argument.
|
||||
|
||||
[[java-rest-high-document-update-response]]
|
||||
==== Update Response
|
||||
|
||||
The returned `UpdateResponse` allows to retrieve information about the executed
|
||||
operation as follows:
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-response]
|
||||
--------------------------------------------------
|
||||
<1> Handle the case where the document was created for the first time (upsert)
|
||||
<2> Handle the case where the document was updated
|
||||
<3> Handle the case where the document was deleted
|
||||
<4> Handle the case where the document was not impacted by the update,
|
||||
ie no operation (noop) was executed on the document
|
||||
|
||||
When the source retrieval is enabled in the `UpdateRequest`
|
||||
through the fetchSource method, the response contains the
|
||||
source of the updated document:
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-getresult]
|
||||
--------------------------------------------------
|
||||
<1> Retrieve the updated document as a `GetResult`
|
||||
<2> Retrieve the source of the updated document as a `String`
|
||||
<3> Retrieve the source of the updated document as a `Map<String, Object>`
|
||||
<4> Retrieve the source of the updated document as a `byte[]`
|
||||
<5> Handle the scenario where the source of the document is not present in
|
||||
the response (this is the case by default)
|
||||
|
||||
It is also possible to check for shard failures:
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-failure]
|
||||
--------------------------------------------------
|
||||
<1> Handle the situation where number of successful shards is less than
|
||||
total shards
|
||||
<2> Handle the potential failures
|
||||
|
||||
When a `UpdateRequest` is performed against a document that does not exist,
|
||||
the response has `404` status code, an `ElasticsearchException` gets thrown
|
||||
which needs to be handled as follows:
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-docnotfound]
|
||||
--------------------------------------------------
|
||||
<1> Handle the exception thrown because the document not exist
|
||||
|
||||
If there is a version conflict, an `ElasticsearchException` will
|
||||
be thrown:
|
||||
|
||||
["source","java",subs="attributes,callouts,macros"]
|
||||
--------------------------------------------------
|
||||
include-tagged::{doc-tests}/CRUDDocumentationIT.java[update-conflict]
|
||||
--------------------------------------------------
|
||||
<1> The raised exception indicates that a version conflict error was returned.
|
||||
|
|
|
|||
Loading…
Reference in New Issue