dsmiley commented on code in PR #962:
URL: https://github.com/apache/solr/pull/962#discussion_r937921926
##########
solr/core/src/java/org/apache/solr/handler/component/QueryElevationComponent.java:
##########
@@ -376,19 +375,19 @@ protected long getConfigVersion(SolrCore core) {
*
* @return The loaded {@link ElevationProvider}; not null.
*/
- private ElevationProvider loadElevationProvider(SolrCore core) throws
Exception {
- XmlConfigFile cfg;
- try {
- cfg = new XmlConfigFile(core.getResourceLoader(), configFileName);
+ private ElevationProvider loadElevationProvider(SolrCore core) throws
IOException, SAXException {
+ try (var inputStream =
core.getResourceLoader().openResource(configFileName)) {
+ return Objects.requireNonNull(
+ loadElevationProvider(SafeXMLParsing.parseUntrustedXML(log,
inputStream)));
} catch (SolrResourceNotFoundException e) {
- String msg = "Missing config file \"" + configFileName + "\"";
+ var msg = "Missing config file \"" + configFileName + "\"";
if (Files.exists(Path.of(core.getDataDir(), configFileName))) {
msg += ". Found it in the data dir but this is no longer supported
since 9.0.";
}
throw new InitializationException(msg,
InitializationExceptionCause.MISSING_CONFIG_FILE);
} catch (Exception e) {
// See if it's because the file is empty; wrap it if so.
- boolean isEmpty = false;
Review Comment:
In this instance, I gave no such advise to Haythem :-)
I think these particular switches to var should not be done because you are
not modifying these lines of code for other reasons. It's a trivial change
that shouldn't happen by itself; its noise in a PR and code history.
##########
solr/core/src/java/org/apache/solr/handler/component/QueryElevationComponent.java:
##########
@@ -376,19 +375,19 @@ protected long getConfigVersion(SolrCore core) {
*
* @return The loaded {@link ElevationProvider}; not null.
*/
- private ElevationProvider loadElevationProvider(SolrCore core) throws
Exception {
- XmlConfigFile cfg;
- try {
- cfg = new XmlConfigFile(core.getResourceLoader(), configFileName);
+ private ElevationProvider loadElevationProvider(SolrCore core) throws
IOException, SAXException {
+ try (var inputStream =
core.getResourceLoader().openResource(configFileName)) {
Review Comment:
I liked the flow previously better -- declare an object holding the parsed
input. And later, not in a try-finally, we call loadElevationProvider. Not
using XmlConfigFile would only mean saying `Document` instead. A benefit to
the previous flow is that the empty file checking would not happen if
loadElevationProvider fails, since there's no point.
##########
solr/core/src/java/org/apache/solr/handler/component/QueryElevationComponent.java:
##########
@@ -413,35 +409,30 @@ private ElevationProvider loadElevationProvider(SolrCore
core) throws Exception
* @throws RuntimeException If the config does not provide an XML content of
the expected format
* (either {@link RuntimeException} or {@link
org.apache.solr.common.SolrException}).
*/
- protected ElevationProvider loadElevationProvider(XmlConfigFile config) {
+ protected ElevationProvider loadElevationProvider(Document doc) {
Map<ElevatingQuery, ElevationBuilder> elevationBuilderMap = new
LinkedHashMap<>();
- XPath xpath = XPathFactory.newInstance().newXPath();
- NodeList nodes = (NodeList) config.evaluate("elevate/query",
XPathConstants.NODESET);
- for (int i = 0; i < nodes.getLength(); i++) {
- Node node = nodes.item(i);
- String queryString = DOMUtil.getAttr(node, "text", "missing query
'text'");
- String matchString = DOMUtil.getAttr(node, "match");
- ElevatingQuery elevatingQuery =
- new ElevatingQuery(queryString, isSubsetMatchPolicy(matchString));
-
- NodeList children;
- try {
- children = (NodeList) xpath.evaluate("doc", node,
XPathConstants.NODESET);
- } catch (XPathExpressionException e) {
- throw new SolrException(
- SolrException.ErrorCode.SERVER_ERROR, "query requires '<doc .../>'
child");
- }
-
- if (children.getLength() == 0) { // weird
+ if (!doc.getDocumentElement().getNodeName().equals("elevate")) {
+ throw new SolrException(
+ SolrException.ErrorCode.BAD_REQUEST, "Root element must be
<elevate>");
+ }
+ NodeList queryNodes =
doc.getDocumentElement().getElementsByTagName("query");
+ for (int i = 0; i < queryNodes.getLength(); i++) {
+ var queryNode = (Element) queryNodes.item(i);
+ var queryString = DOMUtil.getAttr(queryNode, "text", "missing query
'text'");
+ var matchString = DOMUtil.getAttr(queryNode, "match");
+ var elevatingQuery = new ElevatingQuery(queryString,
isSubsetMatchPolicy(matchString));
+
+ NodeList docNodes = queryNode.getElementsByTagName("doc");
+ if (docNodes.getLength() == 0) { // weird
continue;
}
- ElevationBuilder elevationBuilder = new ElevationBuilder();
- for (int j = 0; j < children.getLength(); j++) {
- Node child = children.item(j);
- String id = DOMUtil.getAttr(child, "id", "missing 'id'");
- String e = DOMUtil.getAttr(child, EXCLUDE, null);
+ var elevationBuilder = new ElevationBuilder();
Review Comment:
IMO this is a perfect example where "var" is good. `ElevationBuilder
elevationBuilder = new ...` is needless verbosity. Basically, when the
variable name already communicates the type.
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