Test explain search without pushdown

Signed-off-by: Yuanchun Shen <yuanchu@amazon.com>

Author: yuancu

integ-test/src/test/java/org/opensearch/sql/calcite/remote/CalciteExplainIT.java

@@ -30,8 +30,7 @@ public void supportSearchSargPushDown_singleRange() throws IOException {
     String query =
         "source=opensearch-sql_test_index_account | where age >= 1.0 and age < 10 | fields age";
     var result = explainQueryToString(query);
-    String expected =
-        loadFromFile("expectedOutput/calcite/explain_sarg_filter_push_single_range.json");
+    String expected = loadExpectedPlan("explain_sarg_filter_push_single_range.json");
     assertJsonEqualsIgnoreId(expected, result);
   }
 
@@ -42,16 +41,14 @@ public void supportSearchSargPushDown_multiRange() throws IOException {
         "source=opensearch-sql_test_index_account | where (age > 20 and age < 28) or (age > 25 and"
             + " age < 30) or (age >= 1 and age <= 10) or age = 0  | fields age";
     var result = explainQueryToString(query);
-    String expected =
-        loadFromFile("expectedOutput/calcite/explain_sarg_filter_push_multi_range.json");
+    String expected = loadExpectedPlan("explain_sarg_filter_push_multi_range.json");
     assertJsonEqualsIgnoreId(expected, result);
   }
 
   // Only for Calcite
   @Test
   public void supportSearchSargPushDown_timeRange() throws IOException {
-    String expected =
-        loadFromFile("expectedOutput/calcite/explain_sarg_filter_push_time_range.json");
+    String expected = loadExpectedPlan("explain_sarg_filter_push_time_range.json");
     assertJsonEqualsIgnoreId(
         expected,
         explainQueryToString(

integ-test/src/test/java/org/opensearch/sql/ppl/ExplainIT.java

@@ -426,7 +426,7 @@ public void testMultiFieldsRelevanceQueryFunctionExplain() throws IOException {
                 + " default_operator='or', analyzer=english)"));
   }
 
-  private String loadExpectedPlan(String fileName) throws IOException {
+  protected String loadExpectedPlan(String fileName) throws IOException {
     String prefix;
     if (isCalciteEnabled()) {
       if (isPushdownEnabled()) {

integ-test/src/test/resources/expectedOutput/calcite_no_pushdown/explain_sarg_filter_push_multi_range.json

@@ -0,0 +1,6 @@
+{
+  "calcite": {
+    "logical": "LogicalProject(age=[$8])\n  LogicalFilter(condition=[SEARCH($8, Sarg[0, [1..10], (20..30)])])\n    CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n",
+    "physical": "EnumerableCalc(expr#0..16=[{inputs}], expr#17=[Sarg[0, [1..10], (20..30)]], expr#18=[SEARCH($t8, $t17)], age=[$t8], $condition=[$t18])\n  CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n"
+  }
+}

integ-test/src/test/resources/expectedOutput/calcite_no_pushdown/explain_sarg_filter_push_single_range.json

@@ -0,0 +1,6 @@
+{
+  "calcite": {
+    "logical": "LogicalProject(age=[$8])\n  LogicalFilter(condition=[SEARCH($8, Sarg[[1.0:DECIMAL(11, 1)..10:DECIMAL(11, 1))]:DECIMAL(11, 1))])\n    CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n",
+    "physical": "EnumerableCalc(expr#0..16=[{inputs}], expr#17=[Sarg[[1.0:DECIMAL(11, 1)..10:DECIMAL(11, 1))]:DECIMAL(11, 1)], expr#18=[SEARCH($t8, $t17)], age=[$t8], $condition=[$t18])\n  CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_account]])\n"
+  }
+}

integ-test/src/test/resources/expectedOutput/calcite_no_pushdown/explain_sarg_filter_push_time_range.json

@@ -0,0 +1,6 @@
+{
+  "calcite": {
+    "logical": "LogicalProject(account_number=[$0], firstname=[$1], address=[$2], birthdate=[$3], gender=[$4], city=[$5], lastname=[$6], balance=[$7], employer=[$8], state=[$9], age=[$10], email=[$11], male=[$12])\n  LogicalFilter(condition=[AND(>=($3, TIMESTAMP('2016-12-08 00:00:00.000000000':VARCHAR)), <($3, TIMESTAMP('2018-11-09 00:00:00.000000000':VARCHAR)))])\n    CalciteLogicalIndexScan(table=[[OpenSearch, opensearch-sql_test_index_bank]])\n",
+    "physical": "EnumerableCalc(expr#0..18=[{inputs}], expr#19=[Sarg[['2016-12-08 00:00:00':VARCHAR..'2018-11-09 00:00:00':VARCHAR)]:VARCHAR], expr#20=[SEARCH($t3, $t19)], proj#0..12=[{exprs}], $condition=[$t20])\n  CalciteEnumerableIndexScan(table=[[OpenSearch, opensearch-sql_test_index_bank]])\n"
+  }
+}