[#1500] Fixes Clob type issues

Author: blafond

hibernate-reactive-core/src/main/java/org/hibernate/reactive/adaptor/impl/PreparedStatementAdaptor.java

@@ -346,7 +346,25 @@ private static Buffer convertToBuffer(InputStream is) throws IOException {
 
 	@Override
 	public void setCharacterStream(int parameterIndex, Reader reader, long length) {
-		throw new UnsupportedOperationException();
+		try {
+			int charsLength = (int) length;
+			char[] chars = new char[charsLength];
+			int charsRead = 0;
+			while ( true ) {
+				int n = reader.read( chars, charsRead, charsLength - charsRead );
+				if ( n == -1 ) {
+					break;
+				}
+				charsRead += n;
+				if ( charsRead == length ) {
+					break;
+				}
+			}
+			setString( parameterIndex, new String( chars, 0, charsRead ) );
+		}
+		catch (IOException e) {
+			throw new RuntimeException( e );
+		}
 	}
 
 	@Override

hibernate-reactive-core/src/main/java/org/hibernate/reactive/adaptor/impl/ResultSetAdaptor.java

@@ -703,14 +703,14 @@ public Ref getRef(int columnIndex) {
 
 	@Override
 	public Blob getBlob(int columnIndex) {
-		Blob blob = blob( row -> row.getValue( columnIndex ), row -> row.getBuffer( columnIndex ) );
+		Blob blob = blob( row -> row.getValue( columnIndex - 1 ), row -> row.getBuffer( columnIndex - 1 ) );
 		wasNull = blob == null;
 		return blob;
 	}
 
 	@Override
 	public Clob getClob(int columnIndex) {
-		Clob clob = clob( row -> row.getString( columnIndex ) );
+		Clob clob = clob( row -> row.getString( columnIndex - 1 ) );
 		wasNull = clob == null;
 		if ( wasNull ) {
 			return null;