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Using Apache Solr's boost query function with Spring in Java

I'm writing a Java application that is using Apache Solr to index and search through a list of articles. A requirement I am dealing with is that when a user searches for something, we are supplying a list of recommended related search terms, and the user has the option to include those extra terms in their search. The problem I'm having, however, is that we want the user's original search term to be prioritized, and results that match that should appear before results that only match related terms.
My research suggests that Solr's boost function is the solution for this, but I'm having some trouble getting it to work with Spring. The code all runs fine and I get my search results as expected, but the boost function doesn't seem to actually be re-ordering my searches at all. For example, I'm trying to do something like this:
Query query = new SimpleQuery();
Criteria searchCriteria = Criteria.where("title").contains("A").boost((float) 2);
Criteria extraCriteria = Criteria.where("title").contains("B").boost((float) 1);
query.addCriteria(searchCriteria.or(extraCriteria));
In this example I would be searching for any document whose title contains "A" or "B", but I want to boost results that match "A" to the top of the list.
I've also tried using the Extended DisMax Query Parser with a different syntax to achieve the same result, with similar lack of success. To follow the same example pattern, I'm trying to use the expression criteria as follows:
Query query = new SimpleQuery();
Criteria searchCriteria = Criteria.where("title").expression("A^2.0 OR B^1.0");
query.setDefType("edismax");
query.addCriteria(searchCriteria);
Again I would expect this to return documents with titles matching "A" or "B" but boost results matching "A", and again it simply doesn't seem to actually affect the ordering of my results at all.

Okay, I figured out the problem here. Elsewhere in the code someone else had added this snippet:
query.setPageRequest(pageable);
This was done to support pagination of the search results, but the pageable object ALSO contained some sort orders that looks like they got added to the query as part of the .setPageRequest method. Something to look out for in the future, it looks like sorts override boosting when working with Spring Solr queries in this scenario.

Exact Match in SOLR 5.1

I have setup Solr 5.1.0 with proper data importation from MYSQL database. It is working good.
But I want exact match results or relevant to that only.
like,
Dancers in Mumbai
It gives all results which contains "dancers + mumbai" and only "dancers" + only "mumbai" keywords. I want result which must contains only "dancers + mumbai" not others.

This is not a complete answer, but it's the direction I'm trying to take with a similar problem. Comments are very welcome.
Step 1:
Implement multiple Solr cores, core 1 is "jobs" (dancers/lawyers/etc), and core 2 is "cities" (mumbai/chennai/etc).
Step 2:
Query each core for exact matches, so implement the KeywordTokenizerFactory on the relevant field to find exact matches only. This will give you all the matches accross cores (e.g. jobs: dancers and cities:mumbai).
Step 3:
Perform your general query using EDisMax for a user-friendly search (e.g. searching for "dancers in mumbai" accross many fields), and use the boost field to boost the jobs/cities found in the earlier query.
I would love to know if there is a better way of doing something this elaborate, but I have not found it yet. Hope it helps.

Using required terms like: +dancers +mumbia
Or a phrase query: "dancers in mumbia"
Would work.
You can also set the default operator for your query to be "AND", using the q.op parameter.

GAE - Java - Best way to do a query filter "LIKE"

In my GAE Datastore I have "Person" Entity with name, surname and country
I need to do a query like
"SELECT * FROM Country WHERE name LIKE '%spa%'"
This answer offers a solution like this:
Query query = new Query("Person");
query.addFilter("name", FilterOperator.GREATER_THAN_OR_EQUAL, "pe");
query.addFilter("name", FilterOperator.LESS_THAN, "pe"+ "\uFFFD");
But I don't have any success, always return 0 results... I'm missing something?
It seems that another alternative is useing the "Search API", but... How I migrate all my data of "Persons" in my Datastore to a new Document to do the search?
Any solutions?
Thanks

That answer is not the same as your question. The query they provide is a prefix query: ie all names that start with "pe". You seem to want a query for all names which contain "pe" anywhere, which is not possible for the reasons explained in the accepted answer to that question.
The Search API is indeed the answer to doing this, and the details of how to create documents to represent your datastore objects are contained in the link you posted. (Note this isn't a migration: your data should stay in the datastore, the Search API is a separate system used only for full-text search.)

HibernateSearch query

I am new to hibernate Search and i find difficulty in forming Hibernateserach query.
I need to use IN opeartor to the List the String in Hibernate query .
Can anybody help me to sort out this issue.
My current query look like this
String querystring="country:"+profile.getCountry()+" AND religion:"+profile.getReligion()+" AND caste:"+profile.getCaste()+" AND gender:"+profile.getGender()+"AND profession : "+professions+" AND age:["+profile.getFromage()+" TO "+profile.getToage()+"]" ;
here is professions is a list of string.
Regards,
Arun

There is no IN operator in Lucene query language. You will have to expand the string yourself. An alternative for using the query parser would be to use a Lucene BooleanQuery and add the different parts of your query to it, for example a RangeQuery etc. Effectively the QueryParser creates under the hood this lower level queries for you. Have a look at the Lucene API and the different sub classes of org.apache.lucene.search.Query. You still have to expand the collection string yourself though.
Last but not least, you could use the Hibernate Search query DSL. Have a look at the online docs of Hibernate Search if you want to know more - http://docs.jboss.org/hibernate/stable/search/reference/en-US/html_single/#search-query-querydsl

You need to add the following clauses to your query SELECT, FROM, and WHERE. Also the conditions are missing parts. For example here is a valid query. "SELECT e from Employee where e.country = :country and e.religion = :religion"...

Parse SQL query in Java with UTF-8 support

What (tool, library, way) can you recommend for parsing SQL query in Java?
I need to change column names in output, so for example:
I want to change query from:
SELECT a AS one, b AS two FROM xyz ORDER BY 1
to
SELECT a AS one_1, b AS two_2 FROM xyz ORDER BY 1
There might be many queries in one file to parse.
I tried using JSqlParser, but it doesn't support UTF-8 in SQL statements.

JSqlParser comes to mind. Never used it, but seems to fit the bill pretty well.