@Test
public void testDeleteAllOneIndex() {
client.admin().indices().prepareDelete().execute().actionGet();
String json =
"{"
+ "\"user\":\"kimchy\","
+ "\"postDate\":\"2013-01-30\","
+ "\"message\":\"trying out Elastic Search\""
+ "}";
client.prepareIndex("twitter", "tweet").setSource(json).setRefresh(true).execute().actionGet();
SearchResponse search =
client.prepareSearch().setQuery(QueryBuilders.matchAllQuery()).execute().actionGet();
assertThat(search.getHits().totalHits(), equalTo(1l));
DeleteByQueryRequestBuilder deleteByQueryRequestBuilder =
new DeleteByQueryRequestBuilder(client);
deleteByQueryRequestBuilder.setQuery(QueryBuilders.matchAllQuery());
DeleteByQueryResponse actionGet = deleteByQueryRequestBuilder.execute().actionGet();
assertThat(actionGet.getIndex("twitter"), notNullValue());
assertThat(actionGet.getIndex("twitter").getFailedShards(), equalTo(0));
client.admin().indices().prepareRefresh().execute().actionGet();
search = client.prepareSearch().setQuery(QueryBuilders.matchAllQuery()).execute().actionGet();
assertThat(search.getHits().totalHits(), equalTo(0l));
}
@Test
public void testDeleteByQueryWithMultipleIndices() throws Exception {
final int indices = randomIntBetween(2, 5);
final int docs = randomIntBetween(2, 10) * 2;
long[] candidates = new long[indices];
for (int i = 0; i < indices; i++) {
// number of documents to be deleted with the upcoming delete-by-query
// (this number differs for each index)
candidates[i] = randomIntBetween(1, docs);
for (int j = 0; j < docs; j++) {
boolean candidate = (j < candidates[i]);
index("test-" + i, "test", String.valueOf(j), "candidate", candidate);
}
}
// total number of expected deletions
long deletions = 0;
for (long i : candidates) {
deletions = deletions + i;
}
refresh();
assertHitCount(client().prepareCount().get(), docs * indices);
for (int i = 0; i < indices; i++) {
assertHitCount(client().prepareCount("test-" + i).get(), docs);
}
// Deletes all the documents with candidate=true
DeleteByQueryResponse response =
newDeleteByQuery()
.setIndices("test-*")
.setQuery(QueryBuilders.termQuery("candidate", true))
.get();
refresh();
// Checks that the DBQ response returns the expected number of deletions
assertDBQResponse(response, deletions, deletions, 0l, 0l);
assertNotNull(response.getIndices());
assertThat(response.getIndices().length, equalTo(indices));
for (int i = 0; i < indices; i++) {
String indexName = "test-" + i;
IndexDeleteByQueryResponse indexResponse = response.getIndex(indexName);
assertThat(indexResponse.getFound(), equalTo(candidates[i]));
assertThat(indexResponse.getDeleted(), equalTo(candidates[i]));
assertThat(indexResponse.getFailed(), equalTo(0L));
assertThat(indexResponse.getMissing(), equalTo(0L));
assertThat(indexResponse.getIndex(), equalTo(indexName));
long remaining = docs - candidates[i];
assertHitCount(client().prepareCount(indexName).get(), remaining);
}
assertHitCount(client().prepareCount().get(), (indices * docs) - deletions);
assertSearchContextsClosed();
}
@Test
public void testDeleteAllNoIndices() {
client.admin().indices().prepareDelete().execute().actionGet();
client.admin().indices().prepareRefresh().execute().actionGet();
DeleteByQueryRequestBuilder deleteByQueryRequestBuilder =
new DeleteByQueryRequestBuilder(client);
deleteByQueryRequestBuilder.setQuery(QueryBuilders.matchAllQuery());
DeleteByQueryResponse actionGet = deleteByQueryRequestBuilder.execute().actionGet();
assertThat(actionGet.getIndices().size(), equalTo(0));
}
private void assertDBQResponse(
DeleteByQueryResponse response, long found, long deleted, long failed, long missing) {
assertNotNull(response);
assertThat(response.isTimedOut(), equalTo(false));
assertThat(response.getShardFailures().length, equalTo(0));
assertThat(response.getTotalFound(), equalTo(found));
assertThat(response.getTotalDeleted(), equalTo(deleted));
assertThat(response.getTotalFailed(), equalTo(failed));
assertThat(response.getTotalMissing(), equalTo(missing));
}