[#3800]fix(trino-connector): EXPLAIN command can not show query optim…

…ize details (#3801)

### What changes were proposed in this pull request?

The EXPLAIN command cannot display query optimization details when using
the Gravitino Trino connector

### Why are the changes needed?

Fix: #3800

### Does this PR introduce _any_ user-facing change?

NO

### How was this patch tested?

IT

integration-test/src/test/resources/trino-ci-testset/testsets/jdbc-mysql/00004_query_pushdown.txt

@@ -0,0 +1,51 @@
+CREATE SCHEMA
+
+USE
+
+CREATE TABLE
+
+CREATE TABLE
+
+INSERT: 1500 rows
+
+INSERT: 15000 rows
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_mysql:gt_db1.customer->gt_db1.customer gt_db1.customer limit=10 columns=[custkey:bigint:BIGINT]]
+           Layout: [custkey:bigint]
+%
+"
+
+"Trino version: %
+%
+    └─ ScanFilter[table = gt_mysql:gt_db1.customer->gt_db1.customer gt_db1.customer, filterPredicate = ""$like""(""phone"", ""$literal$""(from_base64('DgAAAFZBUklBQkxFX1dJRFRIAQAAAAEAAAALAAAAAAsAAAAGAAAAJTIzNDIlAA==')))]
+           Layout: [custkey:bigint, name:varchar(25), address:varchar(40), nationkey:bigint, phone:varchar(15), acctbal:decimal(12,2), mktsegment:varchar(10), comment:varchar(117)]
+%
+"
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_mysql:gt_db1.orders->Query[SELECT sum(`totalprice`) AS `_pfgnrtd_0` FROM `gt_db1`.`orders`] columns=[_pfgnrtd_0:decimal(38,2):decimal]]
+           Layout: [_pfgnrtd:decimal(38,2)]
+%
+"
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_mysql:gt_db1.orders->Query[SELECT `orderdate`, sum(`totalprice`) AS `_pfgnrtd_0` FROM `gt_db1`.`orders` GROUP BY `orderdate`] sortOrder=[orderdate:date:DATE ASC NULLS LAST] limit=10 columns=[orderdate:date:DATE, _pfgnrtd_0:decimal(38,2):decimal]]
+           Layout: [orderdate:date, _pfgnrtd:decimal(38,2)]
+%
+"
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_mysql:gt_db1.%->Query[SELECT % INNER JOIN %] limit=10 columns=%]]
+%
+"
+
+DROP TABLE
+
+DROP TABLE
+
+DROP SCHEMA

integration-test/src/test/resources/trino-ci-testset/testsets/jdbc-postgresql/00004_query_pushdown.txt

@@ -0,0 +1,51 @@
+CREATE SCHEMA
+
+USE
+
+CREATE TABLE
+
+CREATE TABLE
+
+INSERT: 1500 rows
+
+INSERT: 15000 rows
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_postgresql:gt_db1.customer->gt_db1.customer gt_db1.customer limit=10 columns=[custkey:bigint:int8]]
+           Layout: [custkey:bigint]
+%
+"
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_postgresql:gt_db1.customer->gt_db1.customer gt_db1.customer constraints=[ParameterizedExpression[expression=(""phone"") LIKE (?), parameters=[QueryParameter{jdbcType=Optional.empty, type=varchar(6), value=Optional[Slice{base=[B@%, baseOffset=0, length=6}]}]]] limit=10]
+           Layout: [custkey:bigint, name:varchar(25), address:varchar(40), nationkey:bigint, phone:varchar(15), acctbal:decimal(12,2), mktsegment:varchar(10), comment:varchar(117)]
+%
+"
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_postgresql:gt_db1.orders->Query[SELECT sum(""totalprice"") AS ""_pfgnrtd_0"" FROM ""gt_db1"".""orders""] columns=[_pfgnrtd_0:decimal(38,2):decimal]]
+           Layout: [_pfgnrtd:decimal(38,2)]
+%
+"
+
+"Trino version: %
+%
+    └─ TableScan[table = gt_postgresql:gt_db1.%->Query[SELECT ""orderdate"", sum(""totalprice"") AS ""_pfgnrtd_0"" FROM ""gt_db1"".""orders"" GROUP BY ""orderdate""] sortOrder=[orderdate:date:date ASC NULLS LAST] limit=10 columns=[orderdate:date:date, _pfgnrtd_0:decimal(38,2):decimal]]
+           Layout: [orderdate:date, _pfgnrtd:decimal(38,2)]
+%
+"
+
+"Trino version: %
+%
+    TableScan[table = gt_postgresql:gt_db1.orders->Query[SELECT % INNER JOIN %] limit=10 columns=%]
+%
+"
+
+DROP TABLE
+
+DROP TABLE
+
+DROP SCHEMA

trino-connector/src/main/java/com/datastrato/gravitino/trino/connector/GravitinoColumnHandle.java

@@ -71,6 +71,6 @@ public boolean equals(Object obj) {
 
   @Override
   public String toString() {
-    return columnName;
+    return columnName + "->" + getInternalHandle().toString();
   }
 }

trino-connector/src/main/java/com/datastrato/gravitino/trino/connector/GravitinoConnectorFactory.java

@@ -30,7 +30,7 @@
 public class GravitinoConnectorFactory implements ConnectorFactory {
 
   private static final Logger LOG = LoggerFactory.getLogger(GravitinoConnectorFactory.class);
-  private static final String DEFAULT_CONNECTOR_NAME = "gravitino";
+  public static final String DEFAULT_CONNECTOR_NAME = "gravitino";
 
   @SuppressWarnings("UnusedVariable")
   private GravitinoSystemTableFactory gravitinoSystemTableFactory;

trino-connector/src/main/java/com/datastrato/gravitino/trino/connector/GravitinoSplit.java

@@ -4,6 +4,8 @@
  */
 package com.datastrato.gravitino.trino.connector;
 
+import static com.datastrato.gravitino.trino.connector.GravitinoConnectorFactory.DEFAULT_CONNECTOR_NAME;
+
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.trino.spi.HostAddress;
@@ -63,4 +65,9 @@ public SplitWeight getSplitWeight() {
   public long getRetainedSizeInBytes() {
     return handleWrapper.getHandle().getRetainedSizeInBytes();
   }
+
+  @Override
+  public String toString() {
+    return DEFAULT_CONNECTOR_NAME + "->" + getInternalHandle().toString();
+  }
 }

trino-connector/src/main/java/com/datastrato/gravitino/trino/connector/GravitinoTableHandle.java

@@ -95,6 +95,6 @@ public boolean equals(Object obj) {
 
   @Override
   public String toString() {
-    return schemaName + ":" + tableName;
+    return String.format("%s.%s->%s", schemaName, tableName, getInternalHandle().toString());
   }
 }

trino-connector/src/main/java/com/datastrato/gravitino/trino/connector/GravitinoTransactionHandle.java

@@ -4,6 +4,8 @@
  */
 package com.datastrato.gravitino.trino.connector;
 
+import static com.datastrato.gravitino.trino.connector.GravitinoConnectorFactory.DEFAULT_CONNECTOR_NAME;
+
 import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.JsonProperty;
 import io.trino.spi.connector.ConnectorTransactionHandle;
@@ -37,4 +39,9 @@ public String getHandleString() {
   public ConnectorTransactionHandle getInternalHandle() {
     return handleWrapper.getHandle();
   }
+
+  @Override
+  public String toString() {
+    return DEFAULT_CONNECTOR_NAME + "->" + getInternalHandle().toString();
+  }
 }