From f4c52d16d8f4e30018f1d3c3f706504831be9bec Mon Sep 17 00:00:00 2001
From: Dominik Stadler <centic@apache.org>
Date: Wed, 26 Nov 2014 21:11:02 +0000
Subject: [PATCH] Include root-cause exception information when constructing
 ContentTypeManager fails

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1641940 13f79535-47bb-0310-9956-ffa450edef68
---
 .../poi/openxml4j/opc/internal/ContentTypeManager.java    | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/ooxml/java/org/apache/poi/openxml4j/opc/internal/ContentTypeManager.java b/src/ooxml/java/org/apache/poi/openxml4j/opc/internal/ContentTypeManager.java
index d03a40ba02..6b71d0dbe9 100644
--- a/src/ooxml/java/org/apache/poi/openxml4j/opc/internal/ContentTypeManager.java
+++ b/src/ooxml/java/org/apache/poi/openxml4j/opc/internal/ContentTypeManager.java
@@ -101,8 +101,12 @@ public abstract class ContentTypeManager {
 			try {
 				parseContentTypesFile(in);
 			} catch (InvalidFormatException e) {
-				throw new InvalidFormatException(
-						"Can't read content types part !");
+			    InvalidFormatException ex = new InvalidFormatException("Can't read content types part !");
+
+                // here it is useful to add the cause to not loose the original stack-trace
+                ex.initCause(e);
+		        
+                throw ex;
 			}
 		}
 	}