COMMENT ON VIEW (#1024)

* * implement COMMENT ON VIEW
* testcase "testCommentOnView"
#1023

* add more asserts

Author: gitmotte

src/main/java/net/sf/jsqlparser/statement/comment/Comment.java

@@ -19,6 +19,7 @@ public class Comment implements Statement {
 
     private Table table;
     private Column column;
+    private Table view;
     private StringValue comment;
 
     @Override
@@ -42,6 +43,14 @@ public void setColumn(Column column) {
         this.column = column;
     }
 
+    public Table getView() {
+        return view;
+    }
+
+    public void setView(Table view) {
+        this.view = view;
+    }
+
     public StringValue getComment() {
         return comment;
     }
@@ -57,6 +66,8 @@ public String toString() {
             sql += "TABLE " + table + " ";
         } else if (column != null) {
             sql += "COLUMN " + column + " ";
+        } else if (view != null) {
+            sql += "VIEW " + view + " ";
         }
         sql += "IS " + comment;
         return sql;

src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt

@@ -4822,6 +4822,7 @@ Comment Comment():
 {
     Comment result = new Comment();
     Table table;
+    Table view;
     Column column;
     Token comment;
 }
@@ -4835,6 +4836,10 @@ Comment Comment():
         (
             <K_COLUMN> column = Column() { result.setColumn(column); }
         )
+        |
+        (
+            <K_VIEW> view = Table() { result.setView(view); }
+        )
     )
     <K_IS> comment=<S_CHAR_LITERAL> { result.setComment(new StringValue(comment.image)); }
     {

src/test/java/net/sf/jsqlparser/statement/comment/CommentTest.java

@@ -9,14 +9,17 @@
  */
 package net.sf.jsqlparser.statement.comment;
 
+import static net.sf.jsqlparser.test.TestUtils.*;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import static org.junit.Assert.assertEquals;
+
 import java.io.StringReader;
+
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.parser.CCJSqlParserUtil;
 import net.sf.jsqlparser.schema.Column;
 import net.sf.jsqlparser.schema.Table;
-import static net.sf.jsqlparser.test.TestUtils.assertSqlCanBeParsedAndDeparsed;
-import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.Assert.assertEquals;
 import org.junit.Test;
 
 public class CommentTest {
@@ -92,4 +95,14 @@ public void testCommentTableColumnDiffersIssue984_2() throws JSQLParserException
         assertThat(comment.getColumn().getTable().getName()).isEqualTo("myTable");
         assertThat(comment.getColumn().getTable().getSchemaName()).isEqualTo("mySchema");
     }   
+
+    @Test
+    public void testCommentOnView() throws JSQLParserException {
+        String statement = "COMMENT ON VIEW myschema.myView IS 'myComment'";
+        Comment comment = (Comment) CCJSqlParserUtil.parse(statement);
+        assertThat(comment.getTable()).isNull();
+        assertThat(comment.getColumn()).isNull();
+        assertThat(comment.getView().getFullyQualifiedName()).isEqualTo("myschema.myView");
+        assertStatementCanBeDeparsedAs(comment, statement);
+    }
 }