shlok7296 commented on a change in pull request #1530: [CALCITE-3437]
ElasticSearch adapter. Support MatchQuery in elasticse…
URL: https://github.com/apache/calcite/pull/1530#discussion_r343158486
##########
File path:
elasticsearch/src/test/java/org/apache/calcite/adapter/elasticsearch/ElasticSearchAdapterTest.java
##########
@@ -705,6 +737,97 @@ public void approximateCount() throws Exception {
"state=AL; EXPR$1=3; EXPR$2=3",
"state=AR; EXPR$1=3; EXPR$2=3");
}
+ /**
+ * Test the ElasticSearch match query. The match query is translated from
CONTAINS query which
+ * is build using RelBuilder, RexBuilder because the normal sql query
assumes CONTAINS query
+ * is for date/period range
+ *
+ * Equivalent SQL query: select * from zipswithtext where city contains
'waltham'
+ *
+ * ElasticSearch query for it:
+ * {"query":{"constant_score":{"filter":{"match":{"city":"waltham"}}}}}
+ *
+ * Pre-requisite:
+ * The Match query can be best tested on "text" fields. Text fields create
tokens and stores
+ * data in lowercase.
+ * The ZIPS index is having fields of type 'keyword'. Changing their type to
text will fail
+ * aggregation, sort tests which should be tested on keyword field only.
+ *
+ * So created a new index 'zipswithtext' which is having city field as type
'text'.
+ *
+ * @throws Exception
+ */
+ @Test
+ public void testMatchQuery() throws Exception {
+
+ final Map<String, String> mapping = ImmutableMap.of("city", "text",
"state",
+ "keyword", "pop", "long");
+ setupInstanceWithMapping(mapping, ZIPS_WITH_TEXT);
+
+ try {
+ CalciteConnection con = (CalciteConnection)
newConnectionFactoryForCustomIndex
+ (ZIPS_WITH_TEXT).createConnection();
+ SchemaPlus postschema = con.getRootSchema().getSubSchema("elastic");
+
+ FrameworkConfig postConfig = Frameworks.newConfigBuilder()
+ .parserConfig(SqlParser.Config.DEFAULT)
+ .defaultSchema(postschema)
+ .build();
+
+ final RelBuilder builder = RelBuilder.create(postConfig);
+ builder.scan(ZIPS_WITH_TEXT);
+
+ final RelDataTypeFactory relDataTypeFactory = new SqlTypeFactoryImpl(
+ RelDataTypeSystem.DEFAULT);
+ final RexBuilder rexbuilder = new RexBuilder(relDataTypeFactory);
+
+ RexNode nameRexNode = rexbuilder.makeCall(SqlStdOperatorTable.ITEM,
+
rexbuilder.makeInputRef(relDataTypeFactory.createSqlType(SqlTypeName.ANY), 0),
+ rexbuilder.makeCharLiteral(
+ new NlsString("city",
rexbuilder.getTypeFactory().getDefaultCharset().name(),
+ SqlCollation.COERCIBLE)));
+
+ RelDataType mapType = relDataTypeFactory.createMapType(
+ relDataTypeFactory.createSqlType(SqlTypeName.VARCHAR),
+ relDataTypeFactory.createTypeWithNullability(
+ relDataTypeFactory.createSqlType(SqlTypeName.ANY), true));
+
+ ArrayList<RexNode> namedList = new ArrayList<RexNode>(2);
+ namedList.add(rexbuilder.makeInputRef(mapType, 0));
+ namedList.add(nameRexNode);
+
+ //Add fields in builder stack so it is accessible while filter
preparation
+ builder.projectNamed(namedList, Arrays.asList("_MAP", "city"), true);
+
+ RexNode filterRexNode = builder
+ .call(SqlStdOperatorTable.CONTAINS, builder.field("city"),
+ builder.literal("waltham"));
+ builder.filter(filterRexNode);
+
+ String builderExpected = ""
+ + "LogicalFilter(condition=[CONTAINS($1, 'waltham')])\n"
+ + " LogicalProject(_MAP=[$0], city=[ITEM($0, 'city')])\n"
+ + " LogicalTableScan(table=[[elastic, zipswithtext]])\n";
+
+ RelNode root = builder.build();
+
+ RelRunner ru = (RelRunner)
con.unwrap(Class.forName("org.apache.calcite.tools.RelRunner"));
+ try (PreparedStatement preparedStatement = ru.prepare(root)) {
+
+ String s = CalciteAssert.toString(preparedStatement.executeQuery());
+ final String result = ""
+ + "_MAP={id=02154, city=NORTH WALTHAM, loc=[-71.236497,
42.382492], pop=57871, state=MA}; city=NORTH WALTHAM\n";
+
+ //Validate query prepared
+ assertThat(root, hasTree(builderExpected));
+
+ //Validate result returned from ES
+ assertThat(s, is(result));
+ }
+ } catch (Exception e) {
Review comment:
Done
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