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bug 61630: further XSSFExportToXML performance improvements from Daniel (bug 61630 comment 15, attachment 35450)

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1813332 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Javen O'Neal 2017-10-25 18:19:12 +00:00
parent 02093f59dc
commit 2cf5a977aa
1 changed files with 31 additions and 23 deletions
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52
src/ooxml/java/org/apache/poi/xssf/extractor/XSSFExportToXml.java
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@ -82,7 +82,7 @@ public class XSSFExportToXml implements Comparator<String>{
private static final POILogger LOG = POILogFactory.getLogger(XSSFExportToXml.class);
private XSSFMap map;
private final HashMap<String, Integer> indexMap = new HashMap<>();
/**
* Creates a new exporter and sets the mapping to be used when generating the XML output document
*
@ -146,7 +146,9 @@ public class XSSFExportToXml implements Comparator<String>{
tableMappings.put(commonXPath, table);
}
indexMap.clear();
xpaths.sort(this);
indexMap.clear();
for(String xpath : xpaths) {
@ -401,6 +403,7 @@ public class XSSFExportToXml implements Comparator<String>{
String[] leftTokens = leftXpath.split("/");
String[] rightTokens = rightXpath.split("/");
String samePath = "";
int minLength = leftTokens.length< rightTokens.length? leftTokens.length : rightTokens.length;
@ -412,47 +415,52 @@ public class XSSFExportToXml implements Comparator<String>{
String rightElementName = rightTokens[i];
if (leftElementName.equals(rightElementName)) {
samePath += "/" + leftElementName;
localComplexTypeRootNode = getComplexTypeForElement(leftElementName, xmlSchema, localComplexTypeRootNode);
} else {
int leftIndex = indexOfElementInComplexType(leftElementName,localComplexTypeRootNode);
int rightIndex = indexOfElementInComplexType(rightElementName,localComplexTypeRootNode);
if (leftIndex!=-1 && rightIndex!=-1) {
if ( leftIndex < rightIndex) {
return -1;
}if ( leftIndex > rightIndex) {
return 1;
}
} /*else {
// NOTE: the xpath doesn't match correctly in the schema
}*/
return indexOfElementInComplexType(samePath, leftElementName, rightElementName,localComplexTypeRootNode);
}
}
return 0;
}
private int indexOfElementInComplexType(String elementName,Node complexType) {
private int indexOfElementInComplexType(String samePath,String leftElementName,String rightElementName,Node complexType) {
if(complexType == null) {
return -1;
return 0;
}
int indexOf = -1;
int i = 0;
Node node = complexType.getFirstChild();
final String elementNameWithoutNamespace = removeNamespace(elementName);
final String leftWithoutNamespace = removeNamespace(leftElementName);
int leftIndexOf = getAndStoreIndex(samePath, leftWithoutNamespace);
final String rightWithoutNamespace = removeNamespace(rightElementName);
int rightIndexOf = getAndStoreIndex(samePath, rightWithoutNamespace);
while (node != null) {
while (node != null && (rightIndexOf==-1||leftIndexOf==-1)) {
if (node instanceof Element && "element".equals(node.getLocalName())) {
Node element = getNameOrRefElement(node);
if (element.getNodeValue().equals(elementNameWithoutNamespace)) {
indexOf = i;
break;
String elementValue = getNameOrRefElement(node).getNodeValue();
if (elementValue.equals(leftWithoutNamespace)) {
leftIndexOf = i;
indexMap.put(samePath+"/"+leftWithoutNamespace, leftIndexOf);
}
if (elementValue.equals(rightWithoutNamespace)) {
rightIndexOf = i;
indexMap.put(samePath+"/"+rightWithoutNamespace, leftIndexOf);
}
}
i++;
node = node.getNextSibling();
}
return indexOf;
if(leftIndexOf == -1 || rightIndexOf == -1) {
return 0;
}
return Integer.compare(leftIndexOf, rightIndexOf);
}
private int getAndStoreIndex(String samePath,String withoutNamespace) {
String withPath = samePath+"/"+withoutNamespace;
return indexMap.getOrDefault(withPath, -1);
}
private Node getNameOrRefElement(Node node) {