fix(bqjdbc): metadata methods & getSqlTypeName for struct

Author: logachev

java-bigquery/google-cloud-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryBaseStruct.java

@@ -42,7 +42,7 @@ abstract class BigQueryBaseStruct implements java.sql.Struct {
 
   @Override
   public final String getSQLTypeName() throws SQLException {
-    throw new BigQueryJdbcSqlFeatureNotSupportedException(CUSTOMER_TYPE_MAPPING_NOT_SUPPORTED);
+    return "STRUCT";
   }
 
   @Override

java-bigquery/google-cloud-bigquery-jdbc/src/main/java/com/google/cloud/bigquery/jdbc/BigQueryDatabaseMetaData.java

@@ -515,27 +515,27 @@ public boolean supportsSchemasInPrivilegeDefinitions() {
 
   @Override
   public boolean supportsCatalogsInDataManipulation() {
-    return false;
+    return true;
   }
 
   @Override
   public boolean supportsCatalogsInProcedureCalls() {
-    return false;
+    return true;
   }
 
   @Override
   public boolean supportsCatalogsInTableDefinitions() {
-    return false;
+    return true;
   }
 
   @Override
   public boolean supportsCatalogsInIndexDefinitions() {
-    return false;
+    return true;
   }
 
   @Override
   public boolean supportsCatalogsInPrivilegeDefinitions() {
-    return false;
+    return true;
   }
 
   @Override
@@ -3305,7 +3305,7 @@ public boolean insertsAreDetected(int type) {
 
   @Override
   public boolean supportsBatchUpdates() {
-    return false;
+    return true;
   }
 
   @Override

java-bigquery/google-cloud-bigquery-jdbc/src/test/java/com/google/cloud/bigquery/jdbc/BigQueryArrowStructTest.java

@@ -227,11 +227,8 @@ public void structOfStructs() throws SQLException {
   }
 
   @Test
-  public void getSQLTypeNameIsNotSupported() {
-    Exception exception =
-        assertThrows(
-            SQLFeatureNotSupportedException.class, structWithPrimitiveValues::getSQLTypeName);
-    assertThat(exception.getMessage()).isEqualTo(CUSTOMER_TYPE_MAPPING_NOT_SUPPORTED);
+  public void getSQLTypeNameReturnsStruct() throws SQLException {
+    assertThat(structWithPrimitiveValues.getSQLTypeName()).isEqualTo("STRUCT");
   }
 
   @Test