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https://issues.apache.org/jira/browse/OAK-319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13955171#comment-13955171
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Thomas Mueller commented on OAK-319:
------------------------------------
I think that "rep:similar" could be supported by converting it to a native
lucene query, as follows:
{noformat}
@Test
public void testRepSimilarQuery() throws Exception {
String nativeQueryString = "select [jcr:path] from [nt:base] where
native('lucene',
'mlt?stream.body=/test/a&mlt.fl=my:path&mlt.mindf=0&mlt.mintf=0')";
Tree test = root.getTree("/").addChild("test");
test.addChild("a").setProperty("my:path", "/test/a");
test.addChild("a").setProperty("text", "Hello World");
test.addChild("b").setProperty("my:path", "/test/b");
test.addChild("b").setProperty("text", "He said Hello World and then
the world said Hello as well.");
test.addChild("b").setProperty("my:path", "/test/c");
test.addChild("b").setProperty("text", "He said Hi and then the world
said Hi as well.");
root.commit();
Iterator<String> result = executeQuery(nativeQueryString,
"JCR-SQL2").iterator();
assertTrue(result.hasNext());
assertEquals("/test/a", result.next());
assertTrue(result.hasNext());
assertEquals("/test/b", result.next());
assertFalse(result.hasNext());
}
{noformat}
The problem is that the path of a node (the ":path" field in Lucene) is not
indexed. [~alex.parvulescu], would it be OK to index this field, or do you
think that would be problematic (for performance or other reasons)?
> Similar (rep:similar) support
> -----------------------------
>
> Key: OAK-319
> URL: https://issues.apache.org/jira/browse/OAK-319
> Project: Jackrabbit Oak
> Issue Type: Sub-task
> Components: jcr, query
> Reporter: Alex Parvulescu
> Assignee: Thomas Mueller
> Priority: Critical
> Fix For: 0.20
>
>
> Test class is: SimilarQueryTest
> Trace:
> {noformat}
> Caused by: java.text.ParseException: Query:
> //*[rep:similar(.(*), '/testroot')]; expected: rep:similar is not supported
> at
> org.apache.jackrabbit.oak.query.XPathToSQL2Converter.getSyntaxError(XPathToSQL2Converter.java:963)
> {noformat}
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