From 66e566cb4d5fab134568089bb9bf39be7d3b3765 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ga=C3=ABl=20Lalire?= <gael.lalire@gaellalire.fr>
Date: Tue, 31 Jan 2023 16:28:54 +0100
Subject: [PATCH] Add small (4 Gb limit) clob support

---
 .../parsers/common/AbstractWriter.java        | 25 +++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/univocity/parsers/common/AbstractWriter.java b/src/main/java/com/univocity/parsers/common/AbstractWriter.java
index 6a19562f..74d19c38 100644
--- a/src/main/java/com/univocity/parsers/common/AbstractWriter.java
+++ b/src/main/java/com/univocity/parsers/common/AbstractWriter.java
@@ -23,6 +23,7 @@
 
 import java.io.*;
 import java.nio.charset.*;
+import java.sql.Clob;
 import java.util.*;
 
 /**
@@ -1079,7 +1080,27 @@ protected String getStringValue(Object element) {
 			usingNullOrEmptyValue = true;
 			return nullValue;
 		}
-		String string = String.valueOf(element);
+		String string;
+		if (element instanceof Clob) {
+			StringWriter sw = new StringWriter();
+			try {
+				Reader reader = ((Clob) element).getCharacterStream();
+				try {
+					char[] buffer = new char[8192];
+					int n;
+					while (-1 != (n = reader.read(buffer))) {
+						sw.write(buffer, 0, n);
+					}
+				} finally {
+					reader.close();
+				}
+			} catch (Exception e) {
+				throw new RuntimeException("Unable to convert clob", e);
+			}
+			string = sw.toString();
+		} else {
+			string = String.valueOf(element);
+		}
 		if (string.isEmpty()) {
 			usingNullOrEmptyValue = true;
 			return emptyValue;
@@ -2580,4 +2601,4 @@ private String getContent(CharSequence tmp) {
 	protected final boolean allowTrim(int fieldIndex) {
 		return !writingHeaders || fieldIndex >= headerTrimFlags.length || headerTrimFlags[fieldIndex];
 	}
-}
\ No newline at end of file
+}