pass list of Pair to myBatis - mybatis

Question

I need to a list of Pair to MyBatis query:
in Mapper:
List<Usage> getUsageByUserLanguagesAndDates(
#Param("userLanguagePairList") List<Pair<String, String>> userLanguageMap,
#Param("startDate") DateTime startDate,
#Param("endDate") DateTime endDate)
List> userLanguageMap looks like this:
List<Pair<String, String>> pairs = Lists.newArrayList;
pairs.add(new Pair("12345", "en-US"));
pairs.add(new Pair("23456", "en-GB"));
...
and the query looks like this:
SELECT
...
FROM
...
WHERE 1=1
AND
(
(l.userid = '12345' AND ll.language_code = 'en-US') OR
(l.userid = '23456' AND ll.language_code = 'en-GB')
)
;
I tried to write the query as:
AND (
<foreach item="userLanguagePair" index="index" collection="userLanguagePairList" open="" separator="," close="">
(
l.userid = #{userLanguagePair.first}
AND
ll.language_code = #{userLanguagePair.second}
)
OR
</foreach>
)
...
but there will be an extra OR at the end:
AND
(
(l.userid = '12345' AND ll.language_code = 'en-US') OR
(l.userid = '23456' AND ll.language_code = 'en-US') OR
)
how can i get rid of the last 'OR'?

Answer 1

From http://www.mybatis.org/mybatis-3/dynamic-sql.html:
<foreach item="item" index="index" collection="list" open="(" separator="," close=")">,
so I'd say your code should be something like this:
...
WHERE 1=1 AND (
<foreach item="userLanguagePair" index="index" collection="userLanguagePairList" open="(" separator="OR" close=")">
l.userid = #{userLanguagePair.first}
AND
ll.language_code = #{userLanguagePair.second}
</foreach>
)
but right now I cannot check if this will generate the correct sentence.