Fixed xmldsrawdump StackOverflowError by streaming XML from Groovy event (OFBIZ-13400) (#1165)

Route the WebTools xmldsrawdump request to a Groovy event and return a
none response instead of rendering the legacy JSP view. The JSP view
could re-enter the controller/view rendering path and repeatedly render
xmldsrawdump until Tomcat failed with StackOverflowError.

Remove the obsolete xmldsrawdump.jsp view and its view-map. The new raw
dump event streams XML directly, uses EntityQuery, and closes the
iterator with withCloseable.

Author: dixitdeepak

framework/webtools/src/main/groovy/org/apache/ofbiz/webtools/entity/XmlDsRawDump.groovy

@@ -0,0 +1,70 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+*/
+package org.apache.ofbiz.webtools.entity
+
+import org.apache.ofbiz.entity.condition.EntityCondition
+import org.apache.ofbiz.entity.model.ModelViewEntity
+import org.apache.ofbiz.entity.util.EntityQuery
+
+if (!security.hasPermission('ENTITY_MAINT', session)) {
+    response.contentType = 'text/plain; charset=UTF-8'
+    response.writer.println('ERROR: You do not have permission to use this page (ENTITY_MAINT needed)')
+    return 'success'
+}
+
+passedEntityNames = session.getAttribute('xmlrawdump_entitylist')
+session.removeAttribute('xmlrawdump_entitylist')
+EntityCondition entityDateCond = session.getAttribute('entityDateCond')
+session.removeAttribute('entityDateCond')
+
+if (!passedEntityNames) {
+    response.contentType = 'text/plain; charset=UTF-8'
+    response.writer.println('ERROR: No entityName list was found in the session, go back to the export page and try again.')
+    return 'success'
+}
+
+reader = delegator.getModelReader()
+response.contentType = 'text/xml; charset=UTF-8'
+writer = response.writer
+writer.println('<?xml version="1.0" encoding="UTF-8"?>')
+writer.println('<entity-engine-xml>')
+
+numberWritten = 0
+try {
+    passedEntityNames.each { curEntityName ->
+        me = reader.getModelEntity(curEntityName)
+        entityQuery = EntityQuery.use(delegator).from(curEntityName).cursorScrollInsensitive()
+        if (!me.getNoAutoStamp() && !(me instanceof ModelViewEntity) && entityDateCond) {
+            entityQuery.where(entityDateCond)
+        }
+        entityQuery.queryIterator().withCloseable { values ->
+            while ((value = values.next()) != null) {
+                value.writeXmlText(writer, '')
+                numberWritten++
+            }
+        }
+    }
+} catch (Exception e) {
+    logError(e, 'Failure in raw XML data source dump')
+    throw e
+}
+
+writer.println('</entity-engine-xml>')
+logInfo("Total records written from all entities: $numberWritten")
+return 'success'

framework/webtools/template/entity/xmldsrawdump.jsp

@@ -501,7 +501,9 @@ under the License.
     </request-map>
     <request-map uri="xmldsrawdump">
         <security https="true" auth="true"/>
-        <response name="success" type="view" value="xmldsrawdump"/>
+        <event type="groovy" path="component://webtools/src/main/groovy/org/apache/ofbiz/webtools/entity/XmlDsRawDump.groovy" transaction-timeout="3600"/>
+        <response name="success" type="none"/>
+        <response name="error" type="none"/>
     </request-map>
 
     <!-- EntitySync requests -->
@@ -664,7 +666,6 @@ under the License.
 
     <view-map name="checkdb" type="screen" page="component://webtools/widget/EntityScreens.xml#CheckDb"/>
     <view-map name="xmldsdump" type="screen" page="component://webtools/widget/EntityScreens.xml#xmldsdump"/>
-    <view-map name="xmldsrawdump" page="template/entity/xmldsrawdump.jsp"/>
 
     <view-map name="FindUtilCache" type="screen" page="component://webtools/widget/CacheScreens.xml#FindUtilCache"/>
     <view-map name="FindUtilCacheElements" type="screen" page="component://webtools/widget/CacheScreens.xml#FindUtilCacheElements"/>