dbeaver/pro#3964 Refactor document (de-)serialization (#3275)

Co-authored-by: Matvey16 <82543000+Matvey16@users.noreply.github.com>

Author: ShadelessFox

server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/sql/WebSQLDatabaseDocument.java

@@ -22,8 +22,7 @@
 import org.jkiss.dbeaver.model.data.DBDDocument;
 import org.jkiss.dbeaver.model.exec.DBCException;
 
-import java.io.ByteArrayOutputStream;
-import java.nio.charset.StandardCharsets;
+import java.io.StringWriter;
 import java.util.Collections;
 import java.util.Map;
 
@@ -63,9 +62,9 @@ public String getData() throws DBCException {
             return null;
         }
         try {
-            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            document.serializeDocument(webSession.getProgressMonitor(), baos, StandardCharsets.UTF_8);
-            return new String(baos.toByteArray(), StandardCharsets.UTF_8);
+            StringWriter writer = new StringWriter();
+            document.serializeDocument(webSession.getProgressMonitor(), writer);
+            return writer.toString();
         } catch (Exception e) {
             throw new DBCException("Error serializing document", e);
         }

server/bundles/io.cloudbeaver.server/src/io/cloudbeaver/service/sql/WebSQLUtils.java

@@ -37,9 +37,8 @@
 import org.jkiss.utils.Base64;
 import org.jkiss.utils.CommonUtils;
 
-import java.io.ByteArrayOutputStream;
+import java.io.StringWriter;
 import java.math.BigDecimal;
-import java.nio.charset.StandardCharsets;
 import java.util.*;
 
 /**
@@ -131,9 +130,9 @@ private static Map<String, Object> createMapOfType(String type) {
     private static Map<String, Object> serializeDocumentValue(WebSession session, DBDDocument document) throws DBCException {
         String documentData;
         try {
-            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            document.serializeDocument(session.getProgressMonitor(), baos, StandardCharsets.UTF_8);
-            documentData = new String(baos.toByteArray(), StandardCharsets.UTF_8);
+            StringWriter writer = new StringWriter();
+            document.serializeDocument(session.getProgressMonitor(), writer);
+            documentData = writer.toString();
         } catch (Exception e) {
             throw new DBCException("Error serializing document", e);
         }